JPH0530502A - Integrated video phone - Google Patents

Abstract

(57) [Summary] [Object] The present invention not only downsizes the image CODEC unit and stores it in the main body device to integrate it, but also, hands-free call, facsimile interface, external camera control, camera attachment / detachment mechanism, video business card. A function, an answering machine function, and a voice call function at the time of power failure are provided to improve multi-functionality and improve system expandability such as application to a video conference system or application to an AV service system. [Composition] A communication control section (15) for controlling communication of digital data such as voice, image, and facsimile or camera control signals, a key panel section (16) for dialing or function control, and a transmission / reception function including hands-free control. And a telephone control unit (15) for controlling the key panel unit.
Image), a camera unit (12a) for inputting an image, a display unit (11) for outputting an image, and an image CODEC unit (1) for encoding an image input signal and decoding a received image signal.
Each component of 3) has an integrated structure, the camera unit has a single inclinable structure and a detachable structure, and external input / output terminals including a facsimile interface are mounted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color moving picture television telephone which uses a high-speed digital communication network to perform simultaneous bidirectional communication of voice, image, and data.
In particular, the present invention relates to an integrated video phone including an image CODEC communication control circuit.

[0002]

2. Description of the Related Art A conventional color moving picture video telephone has an integrated structure including an image CODEC section, and also has a collapsible camera as a conversation and a document camera to support the transmission of a document. However, since the camera unit is fixed to the main body, only the height adjustment and the display direction of the display unit of the main body can be performed, and the camera cannot shoot in any direction while keeping the display direction of the display unit constant. In addition, when transmitting a document, the camera unit itself became a shading of the lighting, and the document to be transmitted had a shadow. Also,
The voice communication means had to hold a handset to make a call.

Further, when the external power supply is cut off at the time of power failure, all the functions are stopped. Devices related to this type of device include, for example, Proceedings of the Spring National Conference of the Institute of Electronics, Information and Communication Engineers (Volume 7) D-419, D-.
420, D-421, D-422, D-423, D-4
24 is given.

[0004]

In the above-mentioned prior art, the voice call must be communicated with the handset of the handset, and there is a problem in terms of usability because of the applicability to the conference by the simple voice image. is there.

Also, the camera section of the main body has a common movable part with the display section, and the camera section cannot be attached to or detached from the main body. Therefore, for example, an image of the rear side of the main body is taken and sent to the other party using the camera. There is a limit to the imaging range of the camera.

In addition, when the camera unit having a foldable structure is set downward and the document is transmitted to the other party, the camera unit itself becomes a shadow of the illumination such as an interior light, and a shadow is generated on the document, so that the other party can see clearly. There is a problem that images cannot be sent.

Further, when a power failure occurs, all the functions included in the main body do not operate and there is a limitation in use.

Further, there is no function for recording a voice message, an image message, etc. when the user is absent, which limits the use.

An object of the present invention is to solve the above-mentioned problems and to provide an integrated type video phone which is convenient, mobile, expandable and easy to use by integrating the video phones.

It is another object of the present invention to provide an integrated video telephone which is suitable not only for a voice and image communication function but also for a multifunction as a multimedia terminal.

[0011]

To achieve the above object, the present invention provides a movable head having a video input means for inputting a video and a display means for displaying an image signal, a voice and an image. A bottom part having a communication control means for multiplexing and transmitting the coded information to and from a communication network, a means for supplying a power source, a telephone control means for controlling a transmitting / receiving function and a key panel part, and an image code for coding a video input signal The image coding / decoding means comprises an image decoding circuit and an image decoding circuit for decoding the received image signal, and is provided with a support portion for connecting and supporting the head portion and the bottom portion.

Further, a communication control section for controlling the demultiplexing of voice, image and digital data and a communication control for a digital communication line, a key panel section for inputting a dial or other function selection, a transmitting / receiving function and the key panel. A telephone control unit for controlling the unit, a camera unit for inputting an image, a display unit for outputting the image, an image encoding circuit for encoding the image input signal, and an image decoding circuit for decoding the received image signal. And an image CODEC unit, the communication control unit, the key panel unit, the telephone control unit, the camera unit, the display unit, and the image CODEC unit are integrated, and the components are integrated in the integrated device. Connection wiring, and the integrated connection wiring outside the device is reduced to a digital communication line cord.

Also, an external microphone input terminal and a built-in microphone, a switch for automatically switching between them and a built-in speaker are connected to the telephone control section, and a control signal is received from the key panel section, and a voice signal is received by the transceiver. The analog switch circuit that switches between the output signal and the voice input / output signal from the microphone / speaker, and the voice input / output signal circuit from the microphone / speaker are set to the signal with the higher signal level, that is, the transmitting or microphone signal or the receiving or speaker signal. A hands-free control circuit is provided that acts to cut off the signal on the side of the through-level signal.

In order to achieve the above-mentioned other objects, a small color camera housed in the camera unit is constructed to be movable up and down with respect to the photographing surface, and is connected to the main body with a flexible cord, and the camera unit is connected to the main body. The camera unit and the holder unit are provided so that the camera unit can be detachably attached to the main body.

In order to achieve the above-mentioned other objects, the camera unit can be tilted toward the front independently of the display unit so that the camera orientation can be set vertically downward, and a switch is provided in the sliding unit so that the camera unit alone can be in front. The switch was closed when the camera started to fall down, and the control program was set to turn on the illumination lamp provided above the small color camera lens of the camera section according to this switch state.

Further, the control program is set so that the lighting lamp is manually turned on by inputting a control signal from the key panel.

Further, in order to achieve the above-mentioned other objects, an external power supply detection circuit is provided in the communication control unit, and a digital communication line control unit, a telephone control unit, and a device control microprocessor are included in the communication control unit. In order to supply a voltage through a voltage conversion for converting a DC voltage supplied from a station from a digital line terminal into a constant voltage, a switch circuit using a diode is connected to an external power supply circuit. Further, in order to achieve the above-mentioned other objects, four camera control signal input / output terminals for pan, tilt, focus, and zoom are provided, and all interfaces are digital signals, and these digital signals are input / output as data to the demultiplexing control unit. So connected.

Further, the demultiplexing control unit sets the control program so that the microprocessor controls the path for returning the three input signals of voice, video and data individually or in combination of two or more to the output circuit. .

Further, in order to achieve the above-mentioned other objects, the general-purpose connector is used as an external input / output terminal, and each terminal of audio input, audio output, video input, video output, serial data input / output, and camera control signal input / output is provided in the main body. Mounted on the back, input the voice input signal and the voice signal from the transmitter to the 2-input analog switch, output it to the telephone control unit voice input circuit, input the video input signal to the 2-input video switch, and image code Input to the digitalization circuit, select each path switching with the key control key on the key panel section, receive the key signal and control the path by the microprocessor, and apply a device with serial signal transfer capability to the microprocessor. Then, connect the serial signal input / output terminal to the external serial data input / output connector via the input / output drive circuit, and Connected to pins of the camera control signal input in terminal through the output driver circuit input and output signal terminals,
Also, the audio output terminal was connected by distributing the received audio signal to the handset, and the video output terminal was distributed by connecting the received video signal to the display section.

Further, a video tape recorder is externally connected through an external input / output terminal, a data input / output terminal is connected through a dedicated cable to the video tape recorder control terminal, and the absence of an input is input from the key panel by the main body microprocessor. I tried to store the information.

[0021]

The image CODEC is located between the camera, the display section and the communication control section as a system system, and is configured to be mounted on the vertical side portion of the above-mentioned L-shaped structure, for example. As a result, the wiring between the substrates can be simplified and integrated.

Further, since the image CODEC is integrated with the apparatus, in order to efficiently dissipate the heat generated by the power consumption of the image CODEC, the image CODEC is mounted on the vertical side portion of the L-shaped structure so that Air can be made to flow in the surface direction from the lower side to the upper side, and the heat dissipation effect can be enhanced.

For example, in the image CODEC section, the image encoding circuit and the image decoding circuit are each a one-chip LSI.
The image processing function of the circuit board (for example, A4
Size), and the communication control unit is a single-chip LS that includes a digital line interface control circuit and a telephone control circuit as an LSI and a data demultiplexing circuit and a microprocessor interface control circuit.
A communication control unit, a telephone control unit including a hands-free control circuit, a facsimile interface circuit, and a camera control interface circuit are accommodated in one circuit board (for example, A4 size), and therefore, a power supply unit and a circuit are provided in the device. 2 boards, key panel, detachable camera,
A display, a speaker / microphone, and a cable for connecting them are housed, and an integrated small-sized videophone is configured without providing the unit outside.

When the camera unit is tilted toward the front with the joint between the main unit and the display unit fixed, and the camera orientation is set downward, the document transmission mode is automatically set. Then, the illumination lamp provided on the upper part of the camera unit is controlled to be automatically turned on.

Further, the camera unit can be removed from the holder to image a desired direction.

Further, the small color camera in the camera unit is adjusted to match the line of sight of the other party on the display, that is, the height of the eyes by the sliding structure in the vertical direction, which enables a natural conversation.

Also, the speaker key on the key panel cuts the voice input / output signal to the handset by the analog switch via the microprocessor, switches to the voice input / output signal path by the microphone and the speaker, and further by the hands-free control circuit. To prevent howling due to positive feedback of the input / output signal, operate by the internal level detection circuit and analog switch circuit so that the signal path with the higher signal level of either the input or output is used to shut off the other. Operate.

Further, a camera control unit is externally attached to the camera control terminals of the own device and the other device, and operations such as pan, tilt, focus and zoom of the external camera are controlled via the camera control unit. The control input signal is input, the demultiplexer is connected, the data is transmitted to the other party, and the control output signal is output to the control unit of the other terminal, thereby operating remotely to control the state of the other camera. .

When the communication control unit multiplexes and demultiplexes voice, image, and data, the combination of three signals of voice, video, and data can be arbitrarily controlled by microprocessor control within the range of the transmission capacity of the digital line. The digital signal is converted from analog / digital by the facsimile interface circuit to the data signal, and the facsimile terminal is connected to both the own machine and the other party's machine. You can

When the externally supplied power is cut off due to a power failure or the like, the externally supplied voltage detection circuit detects that there is no externally supplied voltage, and the digital line controller, microprocessor, and telephone controller in the communication controller. It outputs a control signal to and operates to switch to the voice call mode.

Further, when the external supply voltage is shut off, the power supply or the like converts the DC voltage from the station side from the digital line terminal to a constant voltage, and then supplies the voltage only to the circuit related to the voice communication function. To work.

Further, by controlling the recording of the video tape recorder connected to the external input / output terminal by the external video / audio input / output and data input / output terminal functions, the call from the other party can be automatically received even when the user is away. Communication control is set by a microprocessor, and the video tape recorder is controlled to a recording state at the same time as an incoming call, and a partner message is recorded. Also, the control is performed so that the recording is stopped when the call is disconnected and the original standby state is reset.

As described above, according to the integrated video telephone of the present invention, the digital communication line is applied, and not only the two-way simultaneous communication by voice, video and data but also the facsimile transfer,
You can perform multi-function multimedia communication such as controlling the other party's camera, talking in a hands-free state, and answering machine.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows the overall structure of the integrated video telephone of the present invention. In FIG. 1, a head portion, that is, an L-shaped upper portion 11 is a display portion, and 12a is a camera portion. Further, the supporting portion, that is, the L-shaped vertical side portion 13 is an image CODEC portion including an image encoding / decoding circuit, and 14 is an image C.
It is an ODEC substrate. Furthermore, the bottom (pedestal), that is, L
Reference numeral 15 at the bottom of the character shape is a communication device control board including a communication control circuit and a telephone control circuit, 16 is a key panel portion including a telephone function key, a videophone control key, and an indicator light,
Reference numeral 17 is a power supply unit, 18 is a main body having external input / output terminals including 15 and 16 and 17, 19 is a handset, 10a is a built-in speaker, and 10b is a built-in microphone. 12a has the following structure. 12a is a small color camera 1
2b and the illuminating lamp 12c are housed and housed in the camera holder 12d. The cable 12a is connected to the main body 18. The basic structure of this structure is the same as that disclosed in Japanese Patent Application No. 3-25987 filed previously by the present applicant, and a detailed description thereof will be omitted here.

Next, referring to FIG. 2, the overall structure of the integrated video telephone of the present invention will be described.

Reference numeral 21a is a camera section, 21b is a display section, 21c is a camera illumination lamp, and 21 is 21a and 21b.
And 21c, a camera display unit, and 22 is an image CODEC unit, which includes the following 22a to 22g. 22a is a character superimposing circuit, 22b is a video switch circuit, 22c is a video output circuit, 22d is a display processing circuit for controlling the display system of the display screen of the display unit, 22e is a video input circuit, and 22f is a received digital image signal as a video signal. An image decoding circuit 22g for reproduction is an image encoding circuit for converting the video signal output from 22e into a digital signal for communication control.

Reference numeral 23 is a key panel portion, and the following 23a-2 are provided.
3c. 23a is an LED display control circuit, 2
3b is a videophone function key control circuit, and 23c is a dial key control circuit. A FAX key for controlling facsimile transfer is provided.

A communication control unit 24 has the following 24a to 24.
n. 24a is a signal demultiplexing control circuit, 2
4b is an ISDN user network interface control circuit, 24
c is a microprocessor for controlling each part in the apparatus, 24d
Is a transmission / reception control circuit 24e, a hold function control circuit, 24f is a clock circuit, 24g is a speaker, 24h is a sounder for generating a signal sound, and 24i is an analog switch circuit.

Reference numeral 24j is a hands-free control circuit, 24k is a built-in microphone, 24l is a facsimile interface analog / digital conversion circuit, 24m is a facsimile interface level conversion circuit, and 24n is a camera control interface circuit.

Reference numeral 25 denotes a power source section, which inputs a commercial power source from the outside through a commercial power source plug 20 and supplies a constant voltage to 21, 22, and 24. Reference numeral 26 is a handset which is connected to the main body by a cable. 27 is an ISDN user network interface line connection unit, 28a is a camera control signal input / output terminal, 2
8b is a serial data input / output terminal and 28c is a facsimile terminal, which is mounted on the main body as an input / output connector.

Reference numeral 29a is a voice input terminal, 29b is a voice output terminal, and 29c is an external microphone input terminal, which is mounted on the main body as an input / output connector.

Next, the operation will be described with reference to FIGS.

The color video signal obtained from 21a is 22
output to b. 22b is controlled by 24c and selects an external video input signal or a video signal of 22a and outputs it to 22e. 22e distributes the 22b output signal to 22d and 22g, respectively. The video signal input to 22g is
CCITT Recommendation H.22g A digital image signal compressed to a data transfer rate suitable for the transmission band of the communication line is encoded by a method compliant with H.261 and output to 24a.

As a result, the camera video signal or the external video input signal is selected, and IS is selected as a digital image signal.
It becomes possible to send to the DN user network interface. Also, the digital image signal output from the image signal system output terminal of 24a is input to 22f, and contrary to 22g, CCITT Recommendation H.264. It is decoded into an analog video signal by a method compliant with H.261 and is output to 22c.

22d converts the video signal output from 22e (sending video signal) into a mirror image or a point-symmetrical screen inverted by 180 ° and outputs it to 22c. 22d is 24c
Controlled by, select the type of screen conversion.

22c receives the video signal output from 22f, outputs it to 22a, and is controlled by 24c to select and output a sub-screen display and a normal full-screen display.

The image output to the child screen area is 22d.
Is the output signal of.

22a inputs the video signal output from 22c and outputs it to 21b for screen display.
By the control of 4c, the registered figure, the character and the like are superimposed on the output video signal of 22c and the screen is displayed.

As a result, the received digital image signal can be decoded, reproduced as an analog video signal, and the moving image can be displayed on the display screen. Further, in image display, it is possible to display a monitor or a figure / character on a small screen.

Further, 24a has a digital signal input / output function of three systems of voice, image and data, and multiplexes these three systems of digital signals and transmits them as a digital signal of 2B (2.times.64 kbps). The digital signal is received and separated into the digital signals of the three systems. Further, since the signal transfer rate of each system can be arbitrarily set within the range of 2B equivalent, that is, 128 kbps or less, for example, a combination of audio signal 56 kbps transfer image signal 64 kbps transfer and data signal 8 kbps transfer is included. It enabled bidirectional multiplex communication control with variable transfer rate. The transfer method is CCITT Recommendation H.264. 221 and H.221. Communication control is performed by a method compliant with H.242.

Further, under the control of 24c, the function control of 22 and the lighting control of 23a and the switch control of 22b and 24i are performed.

24b has an input / output signal terminal for an input / output terminal equivalent to 2B of 24a and an input / output terminal for an ISDN user network interface, and is equivalent to 2B including audio, image and data signals multiplexed by 24a. Of the D channel (1
6 kbps) signal is multiplexed and a signal equivalent to ISDN basic interface 2B + D is output to the network, and 2
Input the signal equivalent to B + D and separate the signal equivalent to 2B 24
output to a. Call to the other terminal connected via the network,
For communication control such as connection and disconnection, D channel signal is applied.
b controls. 24c is a microprocessor having a microprogram in the memory,
Function control, input / output control of 23, and hardware control such as setting and confirmation of multiplex separation control of three signals of voice, image, and data by 24a, and man-machine interface control such as message output on the screen.

24d receives the audio signal from 24a, decodes the analog audio signal, and outputs it to 24i.
The audio signal processing circuit encodes the analog audio signal input from 4i and outputs the digital audio signal to 24a.

Reference numeral 24e designates a holding sound generation circuit for outputting a holding sound to the own terminal receiver and the partner terminal receiver when the holding state is set during communication.

Reference numeral 24f is a circuit for outputting the current date and hour and minute data as a clock, which notifies the parameter indicating the time to 24c and displays the current time and the communication time.

A sounder 24h generates a ringing tone.

Further, in 24i, by pressing the voice switching key provided on the key panel, the transmission signal or the external voice input signal is switched by the control of 24c, and the signal source is selected.
Output to 4d.

Further, 24j is a hands-free control circuit, and by pressing the speaker key provided on the key panel, 24i is controlled by 24c so that 24i can be input / output by a microphone of 24k and a speaker of 24g. 24k input signal and 24g while switching to the route
The output signal is compared with the output signal of, and the one with the higher level is passed, and the one with the lower level is shut off.
As a result, the voice input / output signal can be prevented from oscillating due to the positive feedback loop, that is, howling, and good hands-free communication can be performed.

Further, 24l and 24m are circuits constituting a facsimile interface circuit, 24l is an analog / digital conversion circuit, and 24m is an analog level conversion circuit. 24l converts the analog signal level-converted by 24m into a digital signal, and also takes in the data signal and converts it into an analog signal of a specified level.

At 24m, the input / output signal level of 24l is converted into a signal level suitable for the input / output level of the facsimile apparatus connected to the outside.

At the time of facsimile transfer, the FA shown in FIG.
By pressing the X key, the circuit is switched by the switch so that the data signal input / output to / from 24a is connected to 24l, and the data transfer rate of 64 kbps is set so that the facsimile transfer can be performed from 24c to 24a, The transfer rate is set so that audio and video are transmitted at the remaining 64 kbps.

Since the 64 kbps transmission path is set to be bidirectional, the analog facsimile can be transferred through 24 m.

At the time of facsimile transfer, the partner machine also sets the facsimile transfer with the FAX key as in the case of its own machine, or sends the bit rate allocation code to the partner machine at 24a, and the partner machine receives it and sends the fax by 24c. It automatically switches to the transfer mode and enables facsimile transfer.

Reference numeral 24n is a camera control interface circuit, which is an interface circuit for inputting and outputting four kinds of control digital signals for controlling the external camera: pan, tilt, focus and zoom. Connect to the camera control unit through the terminal.

Here, the input / output digital signal of 24l and the input / output digital signal of 24n are selected by the switch under the control of 24c and passed through 24a as a data signal, and then transmitted from 27 to the other device. It

Next, FIG. 3 is a rear external view of an integrated video telephone according to an embodiment of the present invention.

In this video telephone, an AC100V commercial power source is externally taken in by 72 as a power source for driving the apparatus, and a power switch 71 turns the power on / off.

Further, reference numeral 79 is a communication interface for connecting with a dedicated code, in which the normal code is connected. A voice signal (for example, a voice signal of a tape recorder) can be input to 73 via a dedicated code. An external speaker or the like is connected to 74 via a dedicated cord, and the received sound can be output in parallel and monitored. A video signal (for example, a television video signal or an external camera video signal) can be input to 75 via a dedicated code. 76 is connected to a television receiver or the like through a dedicated cord, and received images can be output in parallel and monitored. RS-232C for 77
By connecting a cable with a connector of the interface, serial digital data transfer with a personal computer or the like can be performed. A cable with a connector for a dedicated digital interface can be connected to 78 to control and interlock with an external camera controller.

Reference numeral 80 denotes an external microphone input terminal. When an external microphone is connected to this terminal, it operates so that the voice input is automatically switched from the built-in microphone to the external microphone. Further, reference numeral 80a denotes a facsimile terminal, which can be connected to an external facsimile to enable facsimile transfer.

Since all the external input / output interfaces are mounted on the rear surface of the main body as shown in FIG. 3, various wiring cords are gathered on the rear surface of the main body when connecting to external equipment.
The system can be expanded with clean wiring without being complicated.

Next, FIG. 4 is an external view of a key panel portion of an integrated type video telephone according to an embodiment of the present invention.

In order to facilitate the functional division, various keys are classified into three types, that is, a telephone function key, a videophone control function function key, and a dial key, and arranged.

In the videophone control function key,
For the five function keys of voice switching (A-SW), video switching (V-SW), image quality switching (high image quality), freeze, and camera, the display LED is provided at the tip of the key so that the setting state of each function can be recognized. Is implemented so that the user can easily check the status of each function.

Reference numeral 84 is turned on when the power switch 71 is turned on, and is turned off when the power switch 71 is turned off or the power supply is lost. Further, the numeral 85 flashes at the same time as the ringing tone is output when a call is received.

The speaker key is applied when operating the hands-free function.

FIG. 5 shows a structure in which the external video camera of the other party is controlled by remote control by connecting to the camera control device in the integrated type video telephone of one embodiment of the present invention.

Incidentally, reference numerals 50a and 50b in the figure denote the whole integrated video telephone shown in FIG.
Reference numeral 53 corresponds to 24b, 24a, and 24n in FIG. 2, respectively.

Reference numerals 50a and 50b are integral type video telephones of the present invention, 51a and 51b are digital communication line control circuits in the communication control section, 52a and 52b are demultiplexing control sections, and
53a and 53b are camera control interface circuits, and 54
Is a camera control device controller, 55 is a camera control device, 56 is an external camera, and 57 is an ISDN network.

Further, 50a and 55 and 50b and 54 are connected by dedicated cables (4 signals), respectively.

The camera control digital signal generated at 54 is input to 53b as a parallel signal. 53b
Convert the data input in to serial data,
Is input as a data signal to the data port, multiplexed with voice and image signals, and output to 57 via 51b.
The signal multiplexed in 50a, which is the partner of 50b, is received and separated into audio, image and data signals at 52a via 51a, of which the data signal is reproduced into four parallel signals via 53a, Is output to.

As a result, 55 is set in the vertical (tilt), horizontal (pan), focus and zoom states of 56 by the control signal generated in 54.

As described above, it becomes possible to remotely control the state of the external camera connected to the other device from a remote location.

The camera status of the partner machine can be easily controlled by checking the display section of the own machine.

FIG. 6 is a block diagram of a device for realizing recording / recording at the time of absence by connecting a video tape recorder to the outside in the integrated type video telephone according to one embodiment of the present invention.
Shows the control sequence.

Incidentally, reference numeral 60 in the figure denotes the whole integrated videophone shown in FIG. 2, which is 61, 62, 63, 6
4, 65 are respectively 24c, 24a, 22, 24 of FIG.
d, 24b.

Reference numeral 60 designates an integral type video telephone of the present invention, and 61.
Is a device / communication control microprocessor, 62 is a demultiplexing control unit, 63 is an image CODEC, 64 is a telephone control unit, 65 is a digital communication line control unit, 66 is an external video tape recorder, and 67 is an ISDN network.

The operation is as follows according to FIG.

First, the player's own machine is set to the answering machine mode from the key panel. The answering machine mode is set by the menu key input shown in FIG. 4, but the mode is selected and set by the display and sequence shown in Japanese Patent Application No. 3-25991 filed by the applicant earlier. With this setting, program control is performed so that the call can be automatically received.

When the call is sent from the other party, 65 automatically performs the incoming call operation, notifies 61 of the incoming call, and detects the telephone number of the other party from the incoming call information and stores it in the memory.

Further, the own machine transfers an answering message to the other party to notify the other party that the own machine is absent. Then, the microprocessor 61 instructs the externally connected 66 to start recording. The own device 61 and an external device 66 are connected in advance so that audio and video signals can be output from the audio / video output terminal to 66 via a cable.
After receiving some kind of message from the other party, 60 receives a disconnection notice from the network due to the disconnection of the other party's machine, controls recording stop for 66, and returns to the standby state.

As described above, it is possible to record a message by voice and video when not being present.

FIG. 8 is a block diagram for operating the voice call function by the station-supplied power supplied from the ISDN network when the power supply from the external power supply is shut off in the integrated video phone according to the embodiment of the present invention. It is a block configuration.

Reference numeral 90 denotes the integrated video telephone of the present invention.

Reference numeral 90 in the figure denotes the whole integrated videophone shown in FIG. 2, and 92, 93, 94, 9
5, 96, 97, 98a, 98b, 98c are respectively 24b, 24a, 24c, 24d, 26, 24i of FIG.
It corresponds to 22, 21a and 21b.

Reference numeral 91a is a DC / DC converter for converting the DC voltage from the station into a constant voltage.

Reference numeral 91b is a power supply section, and 91c is a voltage detection circuit for detecting the presence or absence of a commercial power supply.

Reference numeral 91d is a control circuit for realizing a voice call function when the commercial power supply is cut off.
7b and the digital communication line controller 92.

Reference numeral 93 is a demultiplexing control unit, 94 is a microprocessor, 95 is a telephone control unit, 96 is a handset, and 97 is a handset.
a and 97b are switches for bypassing 93 for power saving of the circuit when power is supplied to the station, and 98a is an image CODE.
C and 98b are a camera unit 98c, a display unit, and 99 is an ISDN network.

The operation is as follows.

When the external commercial power supply is not input to 91b, such as during a power failure, 91c detects that there is no external power supply and
Notify 1d. Further, the reference numeral 91a is connected so that the direct current voltage from the station is stepped down and converted into a constant direct current voltage, and the voltage is supplied only to the circuit for realizing the voice communication function. 91d is 9
When it is detected that there is no external voltage from 1c, 92 is controlled and set so that 95 is controlled by 92. Furthermore, 93 is bypassed for power saving of the circuit, and 9
97a, so that the audio signal is directly connected to 95 from 2.
Control 97b.

As described above, the voice call function can be realized even during a power failure.

[0103]

Since the present invention is constructed as described above, it has the following effects.

Since the device is of an integrated type, when realizing the basic functions, that is, voice and image communication, only two cords for the communication line and the power supply cord are provided, and not only can it be easily installed on the desk but also the handset Since it is possible to call while leaving the phone on, it is possible to realize voice and image communication just by facing the main body, which improves usability.

Further, since the facsimile can be connected, the analog facsimile apparatus and the main body can be connected to each other to transfer the document while performing the voice and image communication, thereby improving the usability.

Further, when an incoming call is received, the origin of the outgoing call can be displayed on the display by not only the characters but also the image of the face of the other party, so that there is an effect of preventing a prank call or privacy protection.

Further, since the camera control of the own device or the other device can be performed, the image range of the other device can be remotely changed, so that the usability when the main body is applied to the video conference device can be improved.

In addition, when an incoming call is received when the user is out of the house due to the connection between the external input / output terminal and the video tape recorder (VTR),
By recording not only voice but also video information of the message and the like of the other party, the user can later confirm who called when and when the user can confirm the other party's message, thus improving usability.

Further, since the camera unit is structurally detachable, it is possible to image not only the direction directly facing the main body but also, for example, the state of the room in an arbitrary direction and transfer it to the other party.

Further, since the voice call (telephone) function can be realized only by the power supplied from the station side, the range of conditions of use can be expanded depending on whether or not an external power source such as a commercial power source is supplied, and the system can be operated even when the external power source is cut off due to a power failure or the like. Become.

[Brief description of drawings]

FIG. 1 is a diagram showing an appearance of an embodiment of the present invention.

FIG. 2 is a diagram showing a functional block configuration of an embodiment of the present invention.

FIG. 3 is a diagram showing an outer appearance of a back surface according to an embodiment of the present invention.

FIG. 4 is a diagram showing an appearance of a key panel according to an embodiment of the present invention.

FIG. 5 is a functional block diagram for realizing a camera control function according to an embodiment of the present invention.

FIG. 6 is a functional block diagram for realizing an answering machine function according to an embodiment of the present invention.

FIG. 7 is a diagram showing an operation sequence during an answering machine operation according to an embodiment of the present invention.

FIG. 8 is a functional block diagram for realizing a voice call function during station power feeding according to an embodiment of the present invention.

Claims (16)

[Claims] 1. A camera as a video input / output device, a display unit, and an image C for encoding and decoding image signals.
Input / output information of voice image or data is keyed in a videophone in which an ODEC unit, a communication control unit, a key panel unit that is a control input device, a telephone control unit that controls a transmission / reception function and a key panel unit, and a power supply unit are integrated. An integrated video phone characterized by being switchable by key operations on the panel. 2. The input / output information according to claim 1, wherein voice is a handset, a microphone / speaker, or an external voice input / output terminal, a video is a camera signal or an external video input terminal, and a data signal is a camera control signal. An integrated video telephone characterized in that a facsimile signal and a serial data signal are respectively provided as input / output interfaces, and a control circuit is configured to switch and set them by operating a key on a key panel section. 3. A communication control unit for performing voice / image / data demultiplexing control and digital communication line communication control for voice signals, image signals and data signals at an arbitrary data rate within the transmission rate range of the digital communication line. A key panel unit that is an input device, a telephone control unit that controls the transmitting / receiving function and the key panel unit, a camera unit that is a video input device, a display unit that is a video output device, and encodes a video input signal. Image CODEC comprising image coding circuit and image decoding circuit for decoding received image signal
And a power supply unit, and the communication control unit, key panel unit, telephone control unit, camera unit, display unit, image CO
Each component of the DEC unit and the power supply unit is integrated, connection wiring between each component is performed in the integrated device, and the integrated connection wiring outside the device is connected to the power cord and the digital communication line. Multi-person-to-multi-person with a function that enables transmission / reception of handsets in the on-hook state by applying a microphone / speaker to the voice input / output section in an integrated video phone with reduced wiring in the cord for control, and controlling the control button An integrated video phone that allows you to talk on the phone. 4. The function according to claim 3, which has a connection interface with an analog facsimile apparatus, converts a facsimile transmission analog signal into a digital signal, converts a received digital signal into an analog signal, and reproduces the facsimile reception signal. A digital signal is applied to the digitally converted facsimile signal to enable voice transmission, image communication, or facsimile transmission at the same time as voice / image communication, and a function to output an automatic incoming signal to the connected facsimile device. An integrated video phone characterized by having. 5. The camera platform according to claim 3, which has a digital signal input / output terminal and a function for controlling the camera and an audio / video external input / output terminal and a function, and which has a camera platform for the video camera, a camera control device, and a video camera. Connect and connect the camera control signal to the data signal of the communication control unit that performs demultiplexing control, and transmit the camera control signal to determine the horizontal and vertical orientations of the video camera on the partner terminal side or zoom and focus. An integrated video phone characterized by being adjustable from the side. 6. The integrated type according to claim 5, wherein the camera control signal is folded back within the terminal so that the horizontal and vertical directions, zoom and focus of the video camera connected to the terminal can be adjusted. TV phone. 7. In the above-mentioned item 3, the camera unit is a retractable mechanism that allows the photographing direction to be directed downward independently of the display unit, and the document image can be transferred by placing the document image on the bottom of the main body of the above item 1. In addition, the integrated video telephone is characterized in that the illumination light is provided in the camera section and the deterioration of the transmission image quality due to the shadow generated in the camera section itself at the time of the document transfer is improved so that clearer image information can be transferred. 8. An integrated video telephone according to claim 3, wherein the means for adjusting the focal length of the camera section is automatic focus adjustment. 9. The camera according to claim 3, wherein the camera unit is movable in a direction perpendicular to the display surface of the display unit, and the camera unit can be attached / detached to / from the main body, and the main body and the camera unit can be connected with one cord. With this configuration, it is possible to realize a natural dialogue by adjusting the camera position to the height of the line of sight of the other party during a two-way call, and it is possible to shoot any direction with the detached camera and transmit the image to the other party. An all-in-one type video phone. 10. The data storage circuit according to claim 3, wherein the names and telephone numbers of a plurality of persons are stored, and image information such as faces and profiles corresponding to each name are stored. An integrated video phone characterized by displaying the corresponding information on the display unit if there is a corresponding telephone number when compared with the other party's telephone number. 11. In the above item 10, whether or not the sender sends an image to the other party is switched between two modes of automatic sending and manual sending, and at the time of automatic sending, it is automatically performed when the line with the other party is connected. Send images to each other, send images by pressing the send image button when sending manually, and when receiving calls from other parties that do not correspond to the phone number list stored in the terminal even when sending automatically Is an all-in-one type video phone characterized by switching to manual mode. 12. The video tape recorder (V) having audio / video external input / output terminals and functions according to claim 3 above.
(TR) to the VTR recording control terminal and the audio / video external input / output terminal respectively, and set the terminal to the absence mode.
When an incoming call is received, the main unit communication control unit automatically starts the VTR recording to automatically receive the incoming call, and the partner terminal is notified by sending out the image information stored in advance, and the partner video and voice are recorded. An integrated video phone characterized by the above. 13. In the above item 3, the presence or absence of input of a commercial power source is detected, whether or not there is a power failure is detected, and power supply is performed by converting the power supply voltage from the station side to a voltage related to a voice call function. The integrated video phone is characterized in that the power supply circuit is configured so that the portion related to the voice call function can be operated even in the case of a power failure. 14. The power supply voltage from the station according to claim 13, is connected to a charging circuit including a charger to charge the station power supply even when not in use, and the charging is performed until the charging power exceeds the power capable of driving the entire apparatus. , An integrated video phone characterized by enabling voice and image communication even during a power outage. 15. An external camera, a monitor TV with a speaker for a camera control device, and a microphone according to any one of claims 4 to 5, which are a video input terminal, a camera control signal input / output terminal, a sound, a video output terminal, and an external microphone input terminal, respectively. An integrated video phone that can be configured as a video conferencing system by connecting to, setting a hands-free call state, and making a call. 16. The pay AV information center for providing voice (A) and image (V) information to a plurality of integrated video telephones according to any one of claims 3 to 4, wherein a center-to-end network configuration is provided. An information provision service that applies an integrated video phone that allows you to check moving image and voice information in real time by calling the information center from any terminal.