JPH06319138A - Video telephone system - Google Patents

Abstract

PURPOSE:To attain the transmission reception of a picture with high picture quality by utilizing the telephone system as a portable telephone system through miniaturization and light weight without connection of various input output terminals and power supply terminals or the like on each occasion. CONSTITUTION:The video telephone system is made up of a video telephone system 100 in which an enclosure 101 is formed to be a box whose depth is short, a liquid crystal display section is adopted to attain miniaturization and light weight and the use as a portable video telephone system and up of a video telephone system station 150 in which a telephone function extending or supplementing functions of the video telephone system 100 is built in, and the video telephone system station 150 is installed between a modular jack type socket 201 connecting to an analog public line and a telephone set 202, the rear side of the video telephone set station 150 is provided with LINE input output terminals used to be connected to the analog public line and TEL side input output terminals used to be connected to the telephone set 202 and picture data and voice data are sent/received via a telephone line by connecting the video telephone system 100 to the video telephone system station 150.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a videophone device, and more particularly to a videophone device that can be used as a videophone by connecting to a telephone.

[0002]

2. Description of the Related Art With the recent development of a highly information-oriented society, there is an increasing demand for a communication medium for transmitting a large amount of various information at high speed.

In order to meet such demand, in 1988, TTC (Telecommunication Technology Committee:
JJ as a standard communication method of (Telephone and Telephone Technical Committee)
-40.10 "Analog Telephone Band Still Image Video Communication System"
Was established, which made it possible to exchange black and white images with each other via a communication line. After that, 198
The TTC standard was revised in 1997, and it is now possible to exchange not only monochrome images but also color images. Various videophone devices based on these TTC standards have been developed, and the merit that it is possible to show and convey information that is difficult to convey to the other party only by audio description, and the advantage that you can talk while watching the other party's facial expression Therefore, it is expected to be widely used.

Video telephone devices are roughly classified according to the type of communication network to be connected and the type of image and voice transmission functions. For example, those connected to an analog public line to transmit black and white still images and color still images, , Some transmit color moving images.

In a still picture videophone apparatus which transmits a black and white still image by connecting to such an analog public line, a method of directly transmitting the image data without compressing it is adopted. For example, one screen is 100 ×. 64 at 160 pixels
100 when handling grayscale (6 bits) black and white image data
Since data of x160x6 = 96000 bits (about 11.7 kilobytes) was transmitted at a transmission rate of about 8740 bps (Bit Per Second), it took about 11 seconds to transmit one screen of image data. It took time.

Image data has a large amount of information and is not practical to be processed as it is because of the memory capacity and communication speed.

Therefore, by compressing the image data and the audio data to be transmitted to, for example, about 1/20 to 1/100 and transmitting the data, the analog telephone band is used for 2-10.
A color video-telephone device capable of transmitting / receiving a moving image of about 1 / sec has been devised.

Since the compressed transmission of image data transmits an extremely large amount of data, even if some transmission delay occurs, the influence on the progress of the call is not so great. for that reason,
Variable length coding (for example, a variable length coding system based on CCITT Recommendation H.261) is generally performed.

On the other hand, in compression transmission of voice data, the average generated bit length can be compressed by digitizing the voice data, but in general, entropy compression in which the maximum bit length is not guaranteed (for example, Huffman coding). Is applied to a voice signal, because if the voice signal is generated with a long bit length due to entropy compression, a large transmission delay occurs in the voice signal and it has a great influence on the progress of the call. Have been transmitted after being converted.

A video telephone device connected to such an analog communication network has a communication function of transmitting and receiving by multiplexing image information and audio information, and is compatible with the connected communication network. Regarding the communication procedure to be performed and the encoding method of image information and audio information transmitted / received in addition to the communication signal based on the communication procedure, the type of communication network is recommended by CCITT (International Telegraph and Telephone Consultative Committee) etc. It is specified for each.

Further, the conventional videophone device generally has
It was equipped with a telephone function and its housing was also large.

By the way, in recent years, liquid crystal televisions are becoming widespread, and are used for in-vehicle use, watching sports, and the like.

In recent years, for example, a small-sized liquid crystal television that fits in a shirt pocket has been developed, and it is becoming possible to carry the television at any time while commuting to work or on a business trip.

On the other hand, although there are many opportunities to use the telephone while out of the office, naturally only the voice can be transmitted by the telephone.

[0015]

However, in such a conventional videophone apparatus for compressing and transmitting image data and audio data, a camera which is an image input unit is used to transmit the compressed data. Since the CRT (Cathode Ray Tube) that is the image display unit and the telephone that is the voice input / output unit are integrally configured, it is difficult to reduce the size and weight of the device, and it is difficult to obtain a portable device. There is a problem that the existing telephone cannot be used. That is, the conventional videophone device is made on the assumption that it is a stationary type, and once installed, it is difficult to move it to another place for use.

By the way, recently, the liquid crystal display device has been improved in image quality and has been attracting attention as a display device to replace the CRT. By adopting this liquid crystal display device, the power consumption is reduced and the device is small and lightweight. Can be realized. Further, by separating the telephone function from the videophone device, it is possible to further improve the size and weight reduction of the videophone device. In addition, it is unreasonable that only voice can be transmitted when using a telephone while carrying an LCD TV capable of viewing images.

However, even if the size and weight of the device can be reduced in this way, in the conventional videophone device, various input / output terminals, power supply terminals and the like must be connected each time for use as a videophone. It had to be troublesome.

Particularly, in the case of a videophone device which attaches importance to portability, it is possible to carry the device frequently, and it is necessary to remove the input / output terminals and the like when carrying and to reconnect the input / output terminals and the like when transmitting and receiving. It was troublesome. In addition to this connection, it is necessary to charge the battery of the videophone device appropriately, and when transmitting and receiving for a long time, the battery connection work must be done together, which is more troublesome. It was

In addition, since various input / output terminals, power terminals, etc. are connected each time, it is difficult for a person who is unfamiliar with handling to easily connect, and it is not easy for anyone to use. . Therefore, the present invention is a videophone capable of transmitting and receiving high-quality images without downsizing each input / output terminal, power supply terminal, and the like, while making it possible to carry it with small size and weight. The purpose is to provide a device.

[0020]

The invention according to claim 1 is
To achieve the above object, a receiving means for receiving image data and audio data, and a videophone device body including a display means for displaying the image data received by the receiving means,
It is provided with a station that extends or complements the function of the video phone main body by docking with the video phone main body.

The invention according to claim 2 has a receiving means for receiving the image data and the audio data, and a display means for displaying the image data received by the receiving means, and the casing thereof is a rectangular parallelepiped with a thin depth. A telephone device body formed in
The casing of the main body of the videophone device has a casing in which the casing of the main body of the videophone device can be detachably mounted upright, and by mounting the casing of the main body of the videophone device, the casing of the main body is electrically connected to the main body of the telephone device. And a station that is connected and that extends or complements the functions of the main body of the videophone device.

The casing of the station may be formed in a rectangular parallelepiped with a thin depth so as to be flush with the casing surface of the main body of the videophone device.

The main body of the videophone device may include a TV tuner for receiving a TV broadcast and a display unit for displaying a TV image received by the TV tuner, as set forth in claim 4, for example. Of course, the videophone device main body may include a camera that captures a subject as image data, as described in claim 5, for example.

The main body of the videophone device may have a telephone function of transmitting and receiving image data and audio data via a telephone line, for example, as described in claim 6, and the station Is connected between a telephone line and a telephone as described in claim 7, for transmitting image data and voice data via the telephone line.
It may have a telephone function for receiving, and further, the videophone device main body modulates or demodulates image data and audio data, for example, as described in claim 8 to obtain image data and audio data. May have a modulation and demodulation means for transmitting via a telephone line,
The station is connected between a telephone line and a telephone, for example, as described in claim 9, modulates or demodulates image data and audio data, and transmits the image data and the audio data through the telephone line. It may have a modulation / demodulation means for

Further, the main body of the videophone device can be installed between a telephone and a modular jack type outlet which is connected to a telephone line, and can be connected to the telephone line. I / O terminal
An input / output terminal for connecting to a telephone may be provided, and the station is installed between a telephone and a modular jack type outlet connected to a telephone line, for example, as described in claim 11. It may have an input / output terminal connected to a telephone line and an input / output terminal connected to a telephone.

Further, the station may have a power supply means for supplying a predetermined power source to the main body of the videophone apparatus, as described in claim 12, for example, and the modulation / demodulation means. Is, for example, claim 13.
As described in, a modulator that converts / transmits a digital signal into a transmission signal that can be transmitted through a telephone line, and a demodulator that reversely converts the transmission signal sent through the telephone line into a digital signal. And a NCU that enables use on a general subscriber line as a telephone line.

Further, the videophone device main body has, for example, an input / output port for inputting / outputting data to / from the station, and the station is provided with the videophone device main body. It has an input / output port for inputting / outputting data and an input / output terminal for exchanging predetermined data with an external terminal. When the main body of the videophone device is mounted on the station, the input / output port of the main body of the videophone device. May be connected to the input / output port of the station, and the main body of the videophone device can exchange predetermined data with an external terminal via the station.

Further, the main body of the videophone device includes a rechargeable battery as described in, for example, claim 15.
While having a power supply terminal connected to the rechargeable battery, the station has a charger for supplying power to the rechargeable battery, and a power supply terminal connected to the charger,
When the main body of the videophone device is placed on the station, the power supply terminal connected to the rechargeable battery and the power supply terminal connected to the charger come into contact with each other to charge the main body of the videophone device. The batteries may be powered by the station charger.

[0029]

According to the invention described in claims 1, 4, 5, 7, 9, 11 and 13, there is provided a receiving means for receiving the television image and the sound, and a display means for displaying the image data received by the receiving means. The main body of the videophone device is docked in the station at a predetermined time (for example, when used indoors). As a result, the functions of the main body of the videophone device are expanded or complemented. In this case, as in the invention described in claims 9, 11 and 13, a telephone function is provided on the station side as a station for expanding or complementing the function of the main body of the videophone device.

Therefore, when the main body of the videophone device is used alone, the liquid crystal display is adopted, so
It is lightweight and can be used as a portable device. By simply docking the main body of the videophone device to the station, the telephone function built into the station can be used without connecting input / output terminals, etc. Data can be transmitted bidirectionally via a telephone line (for example, an analog public line).

According to the second aspect of the present invention, the casing of the main body of the videophone device is formed in a rectangular parallelepiped with a small depth, and the casing of the station is upright so that the casing of the main body of the videophone device is detachable. And is formed so that it can be placed.

Therefore, when the main body of the videophone device is housed in a bag or the like, since it is formed in a rectangular parallelepiped having no projection and a small depth, it can be easily carried and the portability can be further improved.

Further, as in the third aspect of the invention, the casing of the station is formed in a rectangular parallelepiped having a thin depth so as to be on the same surface as the casing surface of the main body of the videophone device.

Therefore, when the main body of the videophone device is docked with the station, it becomes an integral type without a protrusion,
The integrated type can be stored in a bag or the like and easily carried, and the portability can be further improved.

According to the sixth, eighth and tenth aspects of the present invention, the data is provided in the main body of the videophone device provided with the receiving means for receiving the television image and the sound and the displaying means for displaying the image data received by the receiving means. Sent via telephone line
A telephone function for receiving is provided.

Therefore, the image data and the voice data are bidirectionally transmitted through the telephone line (for example, an analog public line) by the telephone function built in the main body of the video telephone device without being docked in the station. It becomes possible, for example, a phone can be connected at a mobile phone.

According to the twelfth aspect of the invention, the station is provided with power supply means for supplying power to the main body of the videophone device.

Therefore, only by docking the main body of the videophone device in the station, the telephone function built in the station enables bidirectional transmission of image data and voice data without connecting input / output terminals. The charging of the main body of the videophone device is started by the power supply means, and sufficient charging is performed while it is placed.

According to the fourteenth aspect of the invention, the main body of the videophone device and the station are provided with input / output ports for inputting / outputting data, and the station is provided with input / output terminals for exchanging predetermined data with an external terminal. Then, by mounting the videophone device body on the station, the input / output port of the videophone device body and the input / output port of the station are connected, and the videophone device body is connected to the external terminal via the station. Predetermined data is exchanged between them.

Therefore, in addition to the telephone function of sending / receiving via the telephone line, only by docking the main body of the videophone device to the station, input / output of external data via various data input / output terminals connected to the station. By using these data, the television talk apparatus can be used for more versatile purposes.

[0041] According to the fifteenth aspect of the present invention, the station is provided with a charger for supplying power to the rechargeable battery of the videophone device body, and when the videophone device body is mounted on the station, the television Power is supplied to the rechargeable battery of the telephone device from the charger of the station.

Therefore, charging of the videophone device body, which is carried and used by hand, is started from the charger of the station only by placing it on the station, and the videophone device body is rechargeable while it is placed on the station. Try to charge the battery optimally.

Therefore, if the main body of the videophone device is placed in the station, charging is started without replacing the rechargeable battery or connecting a power adapter, etc., and sufficient charging is performed during the placement. As a result, the convenience of use is improved, and when it is detached from the station, it can be used immediately and becomes even easier to carry.

[0044]

EXAMPLES Examples will be described below with reference to FIGS.

First Embodiment FIGS. 1 to 13 are views showing a first embodiment of a video telephone device according to the present invention, and this embodiment is an example of a video telephone device having a telephone function built in on the station side. .

First, the structure will be described. FIG. 1 is a diagram for explaining a connection relationship of a videophone device including a videophone station, FIG. 2 is an external view of a videophone device including the videophone station of FIG. 1, and FIG. 2 is an external view of the videophone station of FIG. 2, FIG. 4 is an external view of the backside of the videophone station of FIG. 2, and FIG.
4 is an enlarged view for explaining the configuration of the main part of FIG. 4, FIG. 6 is a block diagram of the overall configuration of a videophone device including a videophone station, FIG. 7 is a block diagram of the overall configuration of a videophone station, and FIG. It is a figure which shows the structure of 1 frame of a multiplexing code. The case where an analog telephone general subscriber line is used as a communication line will be described below.

In FIG. 1, the videophone device equipped with the videophone station of the present embodiment transmits and receives high-quality images and adopts a liquid crystal display device to reduce the size and weight, and has a built-in telephone function. A videophone device 10 that can be detachably connected to a station and can be carried around.
0, and the videophone device 100 is detachably connected, and is also connected between a telephone line and a telephone, and includes a videophone station 150 that sends and receives image data and audio data via the telephone line. ing.

The videophone station 150 on which the above-mentioned videophone device 100 is placed is installed between a telephone jack 202 and a modular jack type outlet 201 connected to an analog public line, and connected to the analog public line on the rear surface thereof. LINE side input / output terminal 1L for connecting to the telephone 202 and TEL side input / output terminal 1T for connecting to the telephone 202.

The modular jack 204 and the LINE side input / output terminal 1 are connected by the modular cable 204 having the modular plugs 203 at both ends.
L is connected to each, and TEL side input / output terminal 1T
And the telephone 202 are connected to each other.

In FIG. 2, the video telephone device 100 is
The casing 101 is formed in a rectangular parallelepiped with a small depth, and the casing 101 is formed in a shape of a thin rectangular parallelepiped elongated in the lateral direction.

On the upper left side of the casing 101, the camera unit 10
2 is attached, and the camera unit 102 includes a housing 10
It is supported by the upper end of 1 so as to be rotatable 180 degrees in the front-rear direction. Therefore, the camera 102 has its lens 102
a can be adjusted to an angle of 180 degrees from the front direction to the upper direction and the rear direction of the housing 101.
18 in the front-back direction of the housing 101 without changing the direction of
The subject can be photographed at an angle of 0 degree.

A liquid crystal display unit 103 and a key input unit 104 are provided on the front surface of the housing 101, and the liquid crystal display unit 103 has a DD (Display Dr.
iver) 34, LCD (Liquid Crystal Display) 35
The key input unit 104 is composed of a plurality of key switches 10 for the operator to instruct at the time of selecting various processes in the videophone device 100. The liquid crystal display unit 103 has, for example, a screen size of 1.
This is a 4-inch TFT active matrix type liquid crystal display device, and has three primary colors R (Red), G (G).
a high resolution color liquid crystal display panel of 220 × 279 = 61380 pixels in which each pixel corresponding to reen) and B (Blue) is arranged in a delta shape.

Further, a power switch 105 is provided on the side surface of the housing 101, and the power switch 105 is
The main power of the videophone device 100 is turned on / off.

Further, on the upper surface of the casing 101, there is a volume dial 106 for adjusting the volume of voice and the earphone terminal 1.
07, changeover switch 108 for changing over various modes,
A tuning button 109 and a power indicator 110 for displaying on / off of the main power supply are provided.
An I / O port (not shown) for connecting to an I / O port 152 provided in a recess 151a of a casing 151 of a videophone station 150 described later is provided on the bottom surface of the casing 101. .

When the casing 101 is formed in the horizontally long shape as described above, it is possible to improve the stability when the videophone device 100 is installed and when the videophone device 100 is placed on the station 150.

The volume dial 106 is for adjusting the earphone volume, and the tuning button 1
09 is an instruction to increase or decrease the tuning frequency. The earphone terminal 107 is a terminal for connecting an earphone that also serves as a wire antenna,
It also functions as an antenna terminal.

On the other hand, the above video telephone station 150
Is a station that expands or complements the functions of the videophone device 100 by being docked with a lightweight and small-sized videophone device 100 that can be carried and used. The videophone station 150 of this embodiment is It has a telephone function having a modem (MODEM: MOdulation and DEModulation) and an NCU (Network Control Unit) inside, and as shown in FIG. 1, a telephone line 201 and a telephone 202.
And the image data and the voice data are transmitted and received via the telephone line 201 by the built-in telephone function.

In FIG. 2, the video telephone station 1
50 has a casing 151 formed in the shape of a rectangular parallelepiped that is larger than the lateral direction and the depth of the casing 101 of the videophone device 100.
It is formed in the shape of a rectangular parallelepiped whose vertical direction is lower than the lateral direction and the depth so that the videophone device 100 can stably stand upright when the 0 is docked.

At the center of the upper part of the casing 151, FIG.
As shown in FIG. 3, a recess 151a for surely mounting the videophone device 100 at a predetermined position is formed, and by mounting the bottom of the videophone device 100 on the recess 151 at the center of the upper part of the casing 151. Videophone device 100
Will be docked at the videophone station 150.

An I / O port 152 for connecting to an I / O port (not shown) provided at the bottom of the video telephone 100 is provided on the right side of the center of the recess 151a of the housing 151. Therefore, the videophone device 100 is installed in the recess 151 of the housing 151 of the videophone station 150.
When docked at a, the I / O ports 152 are engaged and connected to each other, and it becomes possible to send and receive data between the videophone device 100 and the videophone station 150.

As shown in FIGS. 2 and 3, a power switch 153 for turning on / off the power of the videophone station 150, an LED 154 for indicating a communication state, a modem 31 described later, and the like are provided on the front surface of the casing 151. NCU3
A DIP switch 155 for setting the communication environment of 0 is provided, and the DIP switch 155 is closed after setting by a lid 156 for storing the DIP switch provided on the front surface of the housing 151.

Further, on the back surface of the casing 151, as shown in FIG. 4, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T, and an I / O for inputting / outputting data using a predetermined cable. A port 157, a pin terminal 158 for inputting / outputting a video signal, pin terminals 159, 160 for inputting / outputting an audio signal, a VHF antenna terminal 161 for inputting a VHF signal, and a UHF signal are input. There are provided a UHF antenna terminal 162 for inputting, an S terminal 163 for inputting / outputting a video signal, and a power cord 164. As shown in the enlarged view of the main part of FIG. 5, the back surface of the housing 151 is provided with input / output terminals 1L and 1T, and between the input / output terminal modular jack type outlet 201 and the telephone 202 (FIG. 1). A space between them is connected by a modular cable 204 having a modular plug 203.

In this case, the video telephone station 150
Since it is assumed that it is installed at home or the like, the videophone station 150 can be kept connected to the telephone line 201 and the telephone 202 at all times. Portable videophone 10 even when transmitting / receiving data to / from 100
You only need to connect the 0 side to the telephone line where you are going.

FIG. 6 shows the videophone device 10 shown in FIG.
It is a block diagram showing a schematic structure of 0. In FIG.
The videophone device 100 includes a camera unit 102, a liquid crystal display unit 103, a control unit 11, an image processing unit 12, and a voice processing unit 13.
The key input unit 104, the control unit 11,
Image processing unit 12, audio processing unit 13, I / O port 50
Are respectively connected to the bus 15.

The key input unit 104, as shown in FIG.
It is composed of a plurality of key switches 10 and is used by the operator to instruct various operations in the videophone device 100.

The control unit 11 has a CPU (Central Processi).
ng Unit) 16, RAM (Random Access Memory) 1
7 and ROM (Read Only Memory) 18.

I / O port (Input / Output port) 50
Is an input / output mechanism that takes in necessary data from the outside and outputs the data to the outside.

The bus 15 includes the key switch 10 and the control unit 1.
1 is a common signal path connecting the image processing unit 12 and the audio processing unit 13, and is composed of an address bus for instructing an address and a data bus for transferring data.

The CPU 16 outputs various control signals for controlling each section in the video telephone 100 to each section via the bus 15 and executes a communication control program corresponding to the type of communication line to be connected. , Also CPU
16 is the videophone 100 and the videophone station 1
When it is placed on the video telephone 50, it receives the image data and the voice data multiplexed and transmitted from the videophone device of the other party, and the modulation / demodulation unit 14 of the videophone station 150.
When demodulated by (FIG. 7) and input, the demodulated image data and audio data are separated, the compressed image data is output to the image compression / expansion circuit 19 via the bus 15, and the compressed audio data is output. The data is output to the audio compression / expansion circuit 27 via the bus 15.

Further, the CPU 16 multiplexes the compressed image data input from the image compression / expansion circuit 19 via the bus 15 and the compressed audio data input from the audio compression / expansion circuit 27 via the bus 15, The image data and the audio data are output to the modulation / demodulation unit 14 of the videophone station 150 via the bus 15.

The RAM 17 is a semiconductor memory for storing program data used in the program processing executed by the CPU 16, compressed image data and audio data.

The ROM 18 is a semiconductor memory that stores programs and data used in the videophone device 100.

The image processing unit 12 includes the image compression / expansion circuit 1
9, buffer memory 20, ADC (Analog to Digital)
Converter: A / D converter) 21, video memory (VRAM) 22, 23, DAC (Digital to Analog)
Converter: D / A converter) 24. Reference numeral 25 is an image input terminal.

The image compression / expansion circuit 19 uses, for example, JPEG (Joint Photographic) in accordance with a predetermined encoding method for the image data stored in the video memory 22, that is, the type of image to be handled (still image in this case). (Coding)
Experts Group) performs compression processing (encoding) by DCT (Discrete Cosine Transform), quantization, and Huffman encoding for each 8 × 8 pixel block, and is also received via a communication line. , The modulation / demodulation unit 1 of the videophone station 150
The received compressed image data demodulated by 4 is expanded (decoded), and the expanded image data is output to and stored in the video memory 23. In this case,
Image data sent as a color video signal of maximum 4096 colors (12 bits) with 110 × 160 pixels via a communication line is converted into a luminance signal corresponding to 220 × 279 pixels (hereinafter, referred to as a luminance signal).
Y signal) and a color signal corresponding to 4096 colors (hereinafter, C signal)
Signal)), and the 12-bit data of 110 × 160 pixels is converted into 12-bit digital image data of 220 × 279 pixels. Note that the data compression rate in the image compression process is 7 / in relation to the image quality after decompression.
It is about 100 (about 68/1000).

The buffer memory 20 temporarily stores the compressed image data compressed by the image compression / expansion circuit 19, and the image data stored in the buffer memory 20 in a compressed state is stored in the CPU 16 by the CPU 16. Are sequentially read out based on the control command. By the way, by ensuring a sufficient storage capacity of the buffer memory 20,
A plurality of image data captured from the camera unit 102 can be stored in a compressed state, and by utilizing this, the videophone device 100 can be used as an electronic still camera.

The ADC 21 converts an image signal (analog signal) input from the camera section 102 into a signal (digital signal) that can be processed in the image processing circuit 12 and outputs the signal to the video memory 22.

The video memories 22 and 23 are VRAM (Vi
deo RAM), which is a semiconductor image memory for storing image data (digital data) output from the ADC 21 or image data (digital data) compressed / expanded by the image compression / expansion circuit 19.

The DAC 24 converts the image signal (digital signal) of the image data stored in the video memory 23 into a signal (analog signal) that can be displayed by the liquid crystal display unit 103 and outputs the signal. In this embodiment, a DAC (D / A converter) is required because an analog data driver is used as the data driver of the LCD 28 described later, but when a digital data driver is used as the data driver. Is this DAC
24 is unnecessary.

The audio processing circuit 13 comprises an ADC 26, an audio compression / expansion circuit 27, a buffer memory 28, and a DAC 29.

The ADC 26 operates from the telephone 202 to the NCU 3 of the modulation / demodulation unit 14 of the video telephone station 150.
1 and the audio signal (analog signal) input through the I / O ports 51 and 50 is converted into a signal (digital signal) that can be processed in the audio processing unit 13 and output to the audio compression / expansion circuit 27. It is a thing.

The audio compression / expansion circuit 27 converts the digital audio data input from the ADC 26 into, for example, CEL.
The P (Code Excited Linear Predivion) algorithm is used to analyze the input data for a fixed time, to synthesize the waveform based on the analyzed parameters, and to calculate the error between the input waveform and the synthesized waveform. The input data from 15 is subjected to compression (encoding) processing, the compressed audio data is output to the DAC 29, and the received compressed audio data demodulated by the modulation / demodulation unit 14 of the videophone station 150 is received. Decompression (decoding) processing is executed, and the decompressed audio data is output to the DAC 29. The data compression rate in the audio compression process is about 5/100 (about 50/1000) because of the relationship with the audio quality after decompression.

The buffer memory 28 temporarily stores the compressed voice data compressed by the voice compression / expansion circuit 27. The voice data stored in the buffer memory 28 in a compressed state is stored in the CPU 16 by the CPU 16. Are sequentially read out based on the control command.

Further, in FIG. 6, the camera unit 102 is
It is composed of a lens 32 and a CCD (Charge Coupled Device) 33.

The lens 32 is an optical lens made of glass or plastic provided in the main body of the video telephone 100, and the CCD 33 generates an electric signal based on the intensity of the light imaged by the lens 32, and the electric signal is generated. The signal (analog signal) is output to the image processing unit 12.

The liquid crystal display unit 103 has a DD (Display Driv)
er) 34 and an LCD (Liquid Crystal Display) 35. In addition, 36 is a TV tuner, 3
Reference numeral 7 is an ADC, 34a is a video input terminal, and 34b is a video output terminal.

The DD 34 drives the LCD 35 in order to display an image on the LCD 35 based on the video signal input from the image processing section 12 or the video signal input from the video input terminal 36. Is
The input video signal is converted into a predetermined bit analog video signal (analog RGB signal) with 220 × 279 pixels,
It is output to the LCD 35.

The LCD 35 is composed of a color liquid crystal display device having a TFT (Thin Film Transistor) type liquid crystal display panel which is one of the active matrix systems,
By driving the DD 34, a color video signal of a maximum of 4096 colors (12 bits) is displayed. As described above, the number of display pixels on the LCD 35 is 110 × 16.
It is 0.

In general, an LCD is extremely thin and easy to reduce in size and weight as compared with an image display means such as a CRT, and an active matrix type LCD is
Compared to a simple matrix LCD, it enables finer control of halftones, a higher contrast ratio, and a faster response speed. Is a valid device. In particular, an active matrix type LCD using a TFT which is a three-terminal element can obtain a high image quality comparable to that of a CRT.

The TV tuner 36 receives a predetermined TV radio wave and outputs a video signal to the buffer memory 20 via the ADC 37.

The ADC 37 converts a video signal, which is an analog signal input from the television tuner 36, into a digital signal.

The power supply circuit 51 is provided with a rechargeable battery, a voltage adjusting circuit, etc., and adjusts the voltage of the power supply of the rechargeable battery with the voltage adjusting circuit etc., and supplies the power to each part of the video telephone apparatus 100. Although the power supply circuit 51 uses a rechargeable battery in the present embodiment, a non-rechargeable battery such as a dry battery may be used.

FIG. 7 is a block diagram showing a schematic configuration of the videophone station 150 shown in FIG. In FIG. 7, the videophone station 150 includes a power switch 153, an LED 154, a DIP switch 155, a control unit 170, a modulation / demodulation unit 14, and an I / O port 52.

The DIP switch 155 is used to select various processing in the videophone station 150 and to use the modem 31.
And for setting the communication environment of the NCU 30.

The control section 170 includes a CPU 171 and a RAM 1
72 and ROM 173.

The CPU 171 controls each part in the videophone station 150 and executes a communication control program according to the type of communication line to be connected. Also, C
When the videophone device 100 is placed on the videophone station 150, the PU 171 receives the image data and the audio data multiplexed and transmitted from the videophone device of the other party, and demodulated by the modulation / demodulation unit 14. Input, the demodulated image data and audio data are separated, compressed image data is output to the image compression / expansion circuit 19 of the videophone device 100, and the compressed audio data is audiocompressed by the videophone device 100. The data is output to the expansion circuit 27.

Further, the CPU 171 multiplexes the compressed image data input from the image compression / expansion circuit 19 of the videophone device 100 and the compressed audio data input from the audio compression / expansion circuit 27 to obtain the image data and the audio data. Is output to the modulation / demodulation unit 14.

The RAM 172 is a semiconductor memory that stores program data used in the program processing executed by the CPU 171, voice data to be transmitted, and the like.

The ROM 173 is a semiconductor memory that stores programs and data used in the videophone station 150.

The modulation / demodulation unit 14 uses a modem (MODEM, MOdu
relation and DEModulation) 30, NCU (Network Co
ntrol unit) 31. 1L,
1T is an input / output terminal for a communication line (in this case, a general subscriber line), 1L is connected to a modular jack type outlet 201 side, and 1T is connected to a telephone 202 side via a modular cable 204, respectively. There is.

The modem 30 and the NCU 31 send serial digital signals output from a computer or terminal device,
A function as a "modulator" that converts and transmits to a transmission signal (analog signal) that can be transmitted on a communication line,
On the contrary, it has a function as a "demodulator" that converts a transmission signal (analog signal) sent through a communication line back into a readable digital signal of a computer or a terminal device. The NCU 31 makes it possible to use a general subscriber line as a communication line to be used. The modem 30 includes an A / D conversion circuit and a buffer memory, A / D converts demodulated data, and temporarily stores the demodulated data in the buffer memory. And the CPU 16
The data stored in this buffer memory is read out by this, the image data and the audio data are separated, and the image data is supplied to the image compression / expansion circuit 19 and the audio data is supplied to the audio compression / expansion circuit 27, respectively. It is a thing.

Further, the modems 30 and N in this embodiment are
The CU 31 is capable of signal transmission at 14400 bps, which is the maximum data transmission rate that can be used in an analog public line, and by incorporating a video code and an audio code into one frame which is a processing unit, image data and audio data can be obtained. Simultaneous transmission in both directions, and image data for one screen is 3
It is transmitted as an intermittent image at a rate of 1 frame per second.

The multiplexing code which constitutes one frame is about 256 bytes (about 204 bytes) including a video header and a video code.
It is composed of video data of 8 bits) and audio data of about 256 bytes (about 2048 bits) including an audio header and an audio code. The video code and the audio code include an error correction code, and the video code Since the video header and the audio header are respectively added before and the audio code, the total transmission data amount of the image data included in the actual video code and the audio data included in the audio code is 9600b.
ps, which uses 4800 bps for image data and 4800 bps for audio data.

Specifically, the data length of one frame is about 256 bytes for video data and about 256 bytes for audio data, which is a total of about 512 bytes (about 4098 bits).
At a transmission rate of 14400 bps, the data transmission time for one frame is approximately 280 ms (approximately 14
0 ms, about 140 ms for voice data).

That is, about 3.57 frames of data are transmitted per second, and the video data transmitted per second is about 7300 bits (256 × 8 × 3.57 = 7).
311). Therefore, in the present embodiment, about 2500 bit data obtained by subtracting the actual image data (4800 bps) from the about 7300 bit data transmitted per second, the information about the screen size, the command about the image data transmission, and the error correction code are added. Etc. are included.

The image data handled in this embodiment is color image data of 4096 colors (12 bits) with 110 × 160 pixels in one screen, and the image data amount for one screen is 11
It becomes 0 × 279 × 12 = 211200 bits (about 25.8 kilobytes). This is about 68 / by image compression processing.
The data is collectively compressed into 1000 to obtain 14400-bit image data, and this 14400-bit image is 4
It transmits 800 bits at a time, that is, 3 seconds (= 1440
(0/4800) transmits an intermittent still image at a rate of 1 frame.

Therefore, the data actually transmitted in one second is obtained by dividing 211200 bits by 3 and 704
This is 00-bit (about 8.6 kilobytes) image data, and this 70400-bit image data is about 68/10.
The video code is compressed to 00 to include 4800-bit image data.

In this case, as the image data to be transmitted, not only the image data for one screen is collectively compressed and the compressed image data is transmitted, but also the original image data is preliminarily based on the transmission time. It may be divided and the compression processing may be performed on the divided image data units.

On the other hand, the voice data is 12 bits / 8 kHz.
Treated as digital data sampled by z, this 12 × 8000 = 96000 bit voice data is
It is compressed to about 50/1000 to obtain a voice code including 4800-bit voice data.

Next, the operation of the first embodiment will be described.

First, the operation of the control unit 11 shown in FIG. 6 and the control unit 170 shown in FIG. 7 will be described.

The program corresponding to the processing operation of the CPU 16 in the control unit 11 is the RO in the control unit 11 as well.
It is stored in M18. In addition, the CPU of the control unit 170
It is assumed that 171 transfers the control right to the CPU 16 in the control circuit 11 when the videophone device 100 is placed on the videophone station 150 and a predetermined condition is satisfied.

Here, it is assumed that the videophone device 100 in the description of the operation of this embodiment is mounted on the videophone station 150, and the videophone device 100 is
When the videophone device 100 is in the power-off state, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T in the videophone device 100 and the videophone station 150 are connected in a through state. In this state, the voice signal of the telephone 202 is transmitted from the TEL side input / output terminal 1T to the LI.
The voice signal input from the analog public line as it is through the NE side input / output terminal 1L is directly output to the telephone set 202 from the LINE side input / output terminal 1L through the TEL side input / output terminal 1T. Is output.

When the videophone device 100 and the videophone station 150 are in the power-on state, the voice signal of the telephone 202 is taken into the videophone device 100 from the TEL-side input / output terminal 1T, and once the ADC 21 performs A / D conversion. After the conversion, the audio compression / expansion circuit 27 compresses the data by a predetermined compression process and outputs the compressed data to the bus 15. The audio signal output to the bus 15 is combined with the image signal by the CPU 16, and the videophone station 1
LI converted by 50 modem 30 and NCU 31
It is output to the NE side input / output terminal 1L.

On the other hand, the input signal input from the analog public line through the LINE side input / output terminal 1L is the modem 3
After being demodulated by 0 and NCU 31, it is A / D converted by a DSP (Digital Signal Processor) in the modem 30 and output to the bus 15. Then, the image signal and the audio signal output to the bus 15 are separated into the image signal and the audio signal by the CPU 16, the audio signal is expanded by the audio compression / expansion circuit 27, and further D / A converted by the DAC 24. It is output to the TEL-side input / output terminal 1L.

First, after turning on the power of the videophone device 100 and the videophone station 150, the operator lifts the handset of the telephone 202 to put it in an off-hook state, and the telephone number of the communication partner is input to enter NC.
U31 makes a dial call.

When the communication line is connected, the following transmission processing and reception processing are executed.

Since the videophone device 100 and the videophone station 150 of this embodiment simultaneously execute image processing and audio processing in parallel in the transmission processing and the reception processing, the transmission processing will be described below. The processing will be described separately as the processing and the audio transmission processing, and the reception processing will be described as the image reception processing and the audio reception processing. In the image transmission process, the image data captured by the camera unit 102 is stored in the video memory 22 via the ADC 21, and the image compression / expansion circuit 19 causes the video memory 2 to operate.
The image data stored in 2 is compressed by a predetermined compression process.

Then, the compressed image data is transferred to the bus 15
And output to the modulation / demodulation unit 14 of the videophone station 150 via the I / O ports 50 and 51.
Is transmitted to the communication partner. Here, when it is desired to record a self-portrait (transmission image) displayed on the LCD 35 during a call, the operator uses the key switch 1 for image recording.
By pressing 0, the image data is stored in the video memory 23.

In this case, since the amount of image data for one screen is 211,200 bits (about 25.8 kilobytes), if the capacity of the video memory 16 is 256 kilobytes, the amount of image data for about 9 to 10 screens is enough. Can be stored. By the way, since the amount of compressed image data for one screen is 14400 bits (about 1.76 kilobytes), in order to store the compressed image data for 10 screens, the image data storage area in the RAM 17 Would be about 18 kilobytes.

In the voice transmission process, the voice data input from the handset of the telephone 202 is the modulation / demodulation unit 14 of the video telephone station 150 and the I / O ports 51, 5.
The audio data is output to the ADC 26 of the videophone device 100 via 0, and the audio data is compressed by the audio compression / expansion circuit 27 by a predetermined compression process.

The compressed audio data is transferred to the bus 1
5 through the modem 1 of the videophone station 150
4 is output to the modem 30 and is transmitted to the communication partner via the NCU 31 and the input / output terminal 1L.

In the image receiving process, the presence / absence of an image receiving signal is discriminated by the modulating / demodulating unit 14 of the videophone station 150. If there is an image receiving signal, the demodulated image data is the I / O ports 51, 50 and the bus 15. The image data output to and received by the image processing unit 12 via
It is expanded by the image compression / expansion circuit 19.

The decompressed image data is stored in the video memory 23, is output to the liquid crystal display unit 103 via the DAC 24, and is displayed on the LCD 35. Here, when the user wants to record the partner image (received image) displayed on the LCD 35 during a call, the operator presses the image recording key switch 10 to store the image data in the video memory 23. .

In this case, since the data amount of the image data for one screen is about 25.8 kilobytes, as described in the image transmission process, the capacity of the video memory 23 is 256.
If there are kilobytes, the image data can be stored for about 9 to 10 screens, so that it can be divided into 3 screens for transmission and 7 screens for reception and used.

In the voice receiving process, the modulation / demodulation unit 14 of the videophone station 150 determines the presence / absence of the voice receiving signal. If the voice receiving signal is present, the demodulated voice signal is output to the voice processing unit 13. The received audio data is output to the audio compression / expansion circuit 27 via the bus 15 and expanded by the audio compression / expansion circuit 27.

Then, the decompressed audio data is converted to DAC.
Is output to the NCU 31 in the modulation / demodulation unit 14 via 29,
Voice is output to the telephone 202 via the input / output terminal 1T. The above transmission / reception processing is repeatedly executed until the handset of the telephone 202 is placed in the on-hook state.

That is, in this embodiment, the image data and audio data compressed by the video / telephone device 100 modulator / demodulator 14 are simultaneously transmitted, and the data compression rate (about 7/100) in the image compression / decompression circuit 19 is set. Based on the image data transmission speed (4800 bps) of the modulation / demodulation unit 14, one screen of image data (21200 bits) displayed by the LCD 35 is divided into three and transmitted, so that a high-quality analog public line can be obtained. The image is transmitted. That is, the screen size of the LCD 35 is 3 inches, and one screen is 110 × 160 pixels × 12 bits (409
6 colors) = 21 1200 bits of data, so 3
Image data is transmitted at the rate of 1 frame per second,
As the number of pixels and the number of colors (the number of gradations) of one screen increase and decrease with the change of the screen size, the time for transmitting the image data for one screen changes.

Specifically, for example, the mode for transmitting image data in 4096 colors is set to the normal mode, and the same number of pixels (1
When the mode for displaying 65536 colors (16 bits) with 10 × 160 pixels) is set to the high image quality mode, when transmitting image data in the high image quality mode, the image data amount for one screen is 110 × 160 × 16. = 281,600 bits (about 34.4 kilobytes), and the data is compressed to about 68/1000 by the image compression processing to be 19200-bit image data.
Time obtained by dividing 00 bits by the number of bits that can be transmitted per second (4800 bits) (that is, 19200/4800 =
Intermittent still images are transmitted at a rate of 1 frame every 4 seconds. That is, in this case, image data of 70400 bits (about 8.6 kilobytes) obtained by dividing 281600 bits by 4 is compressed to about 68/1000, and as shown in FIG. 8 of the first embodiment, 4800 bits. The image code includes the image data of.

9 and 10 show a videophone device 100.
9 is a flowchart for explaining the processing operation of the videophone station 150.

First, after turning on the power of the video telephone 100, after performing initialization processing (step S1) such as initialization in the control circuit 11 and clearing of each memory, it is checked whether there is an input from the key switch 10. A key scan for performing the operation is performed (step S2), and when there is a key input, a process corresponding to the key operation is executed as described later.

Next, the reception flag is once turned off (= "0").
(Step S3), the line voltage level of the NCU 31 is monitored, and the ringer tone is detected to check whether there is a call from the communication partner (Step S4).

If it is determined that it is in the ringer tone section, the reception flag is turned on (= "1") (step S5), the line voltage level of the NCU 31 is monitored again, and the call is now in progress. It is determined whether or not (step S6).

When the telephone call is not currently in progress, it is checked whether or not the image on / off switch of the key switch 10 has been pressed (step S7). If not, the process returns to step S2 and the same processing is performed.

On the other hand, when it is judged in the above step S6 that the telephone is in the call state, it is checked whether or not the reception flag is on (step S8), and the reception flag is off (= "
0 "), the display screen is initialized as in the case where the video on / off switch is pressed in the process of step S7 (step S9).

When the initial setting of the LCD 35 is completed, the image data stored in the video memory 22 is read into the image compression / expansion circuit 19 and is output to the video memory 23 as it is, so that the video memory 22 can be read from the video memory 22.
The image data is moved to 3 (step S10).

Next, in order to check whether or not the key switch 10 has been operated, a key scan is performed (step S11), and it is determined whether or not the image on / off switch of the key switch 10 has been pressed (step S1).
2). When the video on / off switch is not pressed, it is checked whether or not a call is in progress (step S13). When not in a call, the display screen of the LCD 35 of the liquid crystal display unit 303 is erased (step S14), and then step S14.
Then, the process proceeds to 2 and the same process is performed.

That is, when the telephone is not in a call, the video taken by the camera 302 of the videophone device 300 can be displayed and output on the liquid crystal display unit 103 by pressing the video on / off switch to turn it on. Then, by pressing the video on / off switch to turn it off, the display on the liquid crystal display unit 303 can be terminated.

When the video on / off switch is pressed in step S12, it is determined whether or not the call is currently in progress (step S15).
After the LCD 35 is erased (step S14), the process proceeds to step S2. If the video on / off switch is not pressed in step S12 and the call is in progress in step S13, the process returns to step S10 and the same processing is performed.

If the video on / off switch is pressed in step S12 and the call is in progress in step S15, the process proceeds to the process shown in FIG. 10, which will be described later.

Then, in step S8, when the reception flag is on (= "1"), the key switch 10 is key-scanned (step S16), and it is checked whether or not the image on / off switch is pressed (step S16). S17). When the image is not turned on / off,
It is checked whether or not a call is in progress (step S18). If a call is in progress, the process returns to step S16 and the same processing is performed. If no call is being made in step S18, the LCD
After erasing 35 (step S14), the process proceeds to step S2 and the same process as above is performed.

When the video on / off switch is turned on in step S17, the process proceeds to the process shown in FIG.

In the process of FIG. 10, first, the negotiation process is performed (step S21), and the liquid crystal display unit 303 is displayed.
The screen is initialized (step S22).

Next, image data compression / expansion processing by the image processing unit 12 (step S23) and audio compression processing by the audio processing unit 13 (step S24) are sequentially performed, and then data transmission / reception is performed by communication processing. Is performed (step S25).

Then, in order to check whether there is an input from the key switch 10, a key scan is performed (step S26), and it is checked whether or not a call is currently being made (step S27).

In step S27, when a call is in progress, the process returns to step S23 and the same process is performed from the compression / expansion process of the image data. When not in a call, the process proceeds to step S14 of FIG. 9 and the same process as above is performed from the erasing process of the LCD 35. That is, during a call, the image transmitted from the communication partner is displayed by pressing the image on / off switch to turn on the image.
3 can be displayed and output, and in this state, by pressing the video on / off switch to turn it off, the video transmitted from the other party from the videophone device 100.
It is possible to switch to a video image taken by the camera unit 102 and output it to the liquid crystal display unit 103 for display.

The image data compression / expansion processing in step S23, the audio data compression / expansion processing in step S24, and the communication processing in step S25 will be described in detail below.

It should be noted that the videophone device 100 of this embodiment is used.
In the transmission process and the reception process, the image data process and the audio data process are simultaneously executed in parallel. Therefore, in the following description, the transmission process and the reception process will be separately described.

(Transmission Processing) In the transmission processing, the image data taken by the camera 102 is recorded by the ADC 21.
The image data subjected to A / D conversion and A / D conversion is output to the video memory 22. The image data captured in the video memory 22 is compressed by the image compression / expansion circuit 19 and temporarily stored in the buffer memory 20.
The image data stored in the buffer memory 20 in a compressed state is sequentially read by a control signal from the CPU 16.

When it is desired to record a self-portrait (transmission image) displayed on the liquid crystal display unit 103 during a call,
The operator turns on the image capturing switch of the key switch 10. When this image capture switch is turned on, CP
The U 16 transfers the image data accumulated in the buffer memory 20 to the RAM 17 and stores it in the RAM 17.

In this case, since the data amount of the compressed image data for one screen is 14400 bits (about 1.76 kilobytes), the RAM 17 must be stored in the RAM 17 in order to store the compressed image data for 10 screens. The image data storage area need only be about 18 kilobytes.

On the other hand, the voice data input from the telephone set 202 is input from the TEL side input / output terminal 1T to the ADC 26 via the NCU 31, is A / D converted by the ADC 26, and is then compressed by the voice compression / expansion circuit 27. And is temporarily stored in the buffer memory 28. Then, the audio data stored in the buffer memory 28 in a compressed state is sequentially read based on a control signal from the CPU 16.

The CPU 16 sequentially reads the compressed image data and audio data, synthesizes the image data and the audio data, and outputs them to the modem 30. Then, the input compressed data is modulated by the modem 30, D / A converted, and then output from the NCU 31 to the analog public line through the line side input / output terminal 1L.

(Reception Processing) The compressed image data and audio data are input in a compressed state from the analog public line to the modem 30 via the line side input / output terminal 1L and the NCU 31, and demodulated and After the D / D conversion, the data is sequentially transferred to the CPU 16 via the bus 15.

The CPU 16 separates the combined data into image data and audio data, and the compressed image data is temporarily stored in the buffer memory 20 and the compressed audio data is temporarily stored in the buffer memory 28.

Next, the image compression / expansion circuit 19 sequentially reads the written image data from the buffer memory 20, decompresses it, and then writes it in the video memory 23.

When it is desired to record the partner image (received image) displayed on the liquid crystal display unit 43 during a call, the operator turns on the image capturing switch of the key switch 10. When the image capture switch is turned on, CP
The U 16 transfers the image data stored in the buffer memory 20 to the RAM 17 and stores it in the RAM 17.

In this case, as described in the above-mentioned transmission processing, the amount of compressed image data for one screen is about 25.8 kilobytes, so if the image data storage area of the RAM 17 is 256 kilobytes. , Image data about 1
It is possible to store 0 screens. Therefore, the RAM 17 is used by dividing the storage area for 10 screens into, for example, 3 screens for storing image data for transmission and 7 screens for storing image data for reception. You can also

On the other hand, the audio compression / expansion circuit 27 sequentially reads the written audio data from the buffer memory 28, expands it, and outputs it to the DAC 29 at a constant rate. Then, the expanded analog voice data is output from the NCU 31 to the telephone set 202 via the TEL-side input / output terminal 1L and can be heard from the handset.

This transmission / reception processing is repeatedly executed until the receiver of the telephone set 202 is placed.

Next, the transmitting operation and the receiving operation will be described with reference to FIGS. 11 and 12.

11 and 12, on-hook means a state where the telephone receiver of the telephone 202 is placed, and off-hook means a state where the telephone receiver of the telephone 202 is lifted. In addition, "during communication" means a state in which a line is connected and a conversation is established.

First, the transmission operation will be described with reference to FIG.

FIG. 11 is a transition diagram of communication states at the time of transmission.

In the on-hook state, the liquid crystal display unit 103
When the screen display of the LCD 35 in is turned off by pressing the video on / off switch once to turn it on (Fig. 1
(See (a) in 1), the LCD 35 is in a display state, and the input image from the camera unit 302 of the video telephone apparatus 100 of the user is displayed on the LCD 35 as a monitor. In this state, when the video on / off switch is pressed again to go on hook (see (b) in FIG. 11), the display on the LCD 35 disappears and the original state is restored.

When the receiver is lifted from the on-hook state (see (c) in FIG. 11), the state shifts to the off-hook state.

In the off-hook state, when the screen display of the LCD 35 of the liquid crystal display unit 103 is off, the image is turned on.
When the off switch is pressed once (see (d) in FIG. 15),
The LCD 35 enters the display state, and the input image from the camera unit 102 of the video telephone apparatus 100 on the self side is displayed on the LCD 35 as a monitor, as in the case of the on-hook state described above. In this state, when the video on / off switch is pressed again (see (e) in FIG. 11), the LCD 35
Even if the monitor display of disappears, it returns to the original off-hook state.

In the on-hook and off-hook states, the monitor display is displayed on the LCD 35 (see FIG. 1).
1, the state where the on-hook and off-hook triple lines are drawn) even if the handset is raised / lowered (see (f) in FIG. 11), the state only shifts from on-hook to off-hook or from off-hook to on-hook. And LCD3
There is no change in the monitor display of No. 5.

Next, irrespective of whether the LCD 35 is in the monitor display or turned off, a dial call is made in an off-hook state and a response is established with the other party (see FIG. 1).
(See (g) and (h) in 1))
The LCD 35 is a monitor display on its own side. When the other party hangs up in this state (see (i) in FIG. 11),
The off-hook state is entered, and the monitor display on the LCD 35 also disappears. Further, even when the user hangs up the telephone during the call (see (j) in FIG. 11), the state shifts to the on-hook state and the monitor display of the LCD 35 disappears.

If the video on / off switch is pressed while the LCD 35 is displaying on its own monitor during a call (see FIG. 11).
(See (k) in the above), communication negotiation is started with the other terminal. As a result, when it is determined that the other terminal and the own terminal cannot communicate with each other (see (l) in FIG. 11), the state before the video on / off switch is pressed is restored, and the other terminal and the own terminal When the terminal and the terminal can communicate with each other, the videophone section is established (see (m) in FIG. 11), and thereafter, the image data and the audio data are mutually communicated.

In this state, no matter how many times the video on / off switch is pressed, it is ignored (see (n) in FIG. 11). In this state, if the other party hangs up the phone (Fig. 11
(See (o) in the figure), transition to the off-hook state, and
The monitor display of 35 also disappears. Further, even if the receiver puts the handset (see (p) in FIG. 11), the state shifts to the on-hook state and the monitor display on the LCD 35 disappears.

Then, when the receiver is put on while the monitor display of the LCD 35 is off in the off-hook state, the state shifts to the on-hook state (see (q) in FIG. 11).

Next, the receiving operation will be described with reference to FIG.

The description of the items explained in the above description of the transmission operation will be omitted.

FIG. 12 is a transition diagram of the reception state at the time of reception. Incidentally, in FIG. 12, the period shown by the zigzag line shows the ringer tone, that is, the time when the bell of the telephone 202 is ringing.

During the ringer tone interval (see (r) in FIG. 12), the handset is lifted to respond (FIG. 12).
(See (s) in the middle), the state shifts to the talking state, but at this time, unlike the transmitting side, the LCD 35 does not display the monitor, and remains on. However, on-hook,
When the video on / off switch is pressed once (see (t) in FIG. 12), the LCD 35 enters the monitor display state, and the self side can be monitored. At this time, a ringer tone is generated (see (u) in FIG. 12). When the ringer tone is responded to (see (v) in FIG. 12), a call is in progress and the LCD 35 remains on the monitor display. Become. By the way, the video on / off switch is effective even in the on-hook state and within the ringer tone section.

As described above, in the videophone device of this embodiment, the casing 101 is formed in a rectangular parallelepiped with a small depth, and the liquid crystal display unit 103 is adopted to reduce the size and weight of the portable telephone. And a videophone station 150 having a built-in telephone function for expanding or complementing the function of the videophone device 100.
The videophone station 150 is installed between a modular jack type outlet 201 connected to an analog public line and a telephone set 202, and a LINE side input / output terminal for connecting to the analog public line is provided on the rear surface thereof. 1L and TEL for connecting to the telephone 202
With the side input / output terminal 1T, by docking the videophone device 100 in the videophone station 150, image data and audio data are transmitted via a telephone line.
Since the reception is performed, when the main body of the videophone device 100 is used alone, the liquid crystal display unit 103 is adopted so that the size and weight can be reduced and the mobile phone can be used. When the main body of the device 100 is docked to the videophone station 150, the telephone function built in the station enables bidirectional transmission of image data and audio data via a telephone line.

Particularly, by mounting the main body of the videophone device 100 on the videophone station 150, the telephone function built into the videophone station 150 can be used as a videophone without connecting input / output terminals, power terminals, etc. one by one. Since it can be used, it is possible to eliminate the trouble of removing the input / output terminals and the like when carrying the mobile phone and reconnecting the input / output terminals and the like during transmission and reception, and the usability can be greatly improved. Also, even if you are unfamiliar with handling,
The main body of the videophone device 100 is the videophone station 1
Since the predetermined connection is completed and the videophone function can be used only by the extremely simple work of mounting the device on the device 50, anyone can use it easily.

As described above, if the main body of the videophone device 100 is docked with the videophone station 150 while having the function of the television receiver, the voice can be transmitted and received, and the screen of the liquid crystal display unit 103 can be used to communicate with the other party. It is possible to realize high-quality image transmission while taking advantage of the original feature of the videophone device that it is possible to see an image and call while looking at the other party's face. Particularly, in this embodiment, since the telephone function is provided in the videophone station 150, the circuit configuration of the videophone device 100 main body is relatively simple, and the videophone device 100 main body is smaller and lighter. Can be realized.

Also, the video telephone station 150 is
LINE side input / output terminal 1L and TEL side input / output terminal 1T
In addition, I / O port 15 for inputting / outputting data
7. Pin terminals 158 for inputting / outputting video signals, pin terminals 159, 160 for inputting / outputting audio signals, VH
VHF antenna terminal 161, U for inputting F signal
UHF antenna terminal 162 for inputting an HF signal,
Since the S terminal 163 for inputting / outputting the video signal is provided, not only the above-mentioned telephone function but also the main body of the video telephone 100 is connected to the external terminal via the station 150 having these input / output terminals. It is possible to send and receive predetermined data.

Further, in the conventional videophone apparatus, in order to record the sent image, another recording apparatus (for example, an audio cassette tape recorder or the like) is required for recording. Then, by mounting the large-capacity video memories 22 and 23, when it is desired to record an image during a call, a desired image can be easily stored by pressing the key switch 10. By the way, if you want to record a compressed image, the video memory 22,23
The image data therein may be compressed by the image compression / expansion circuit 19 and stored in the RAM 17.

Further, a video cassette recorder (VCR) is provided by providing a composite video input / output terminal, an analog / digital RGB input / output terminal, etc. as a video input terminal to the ADC 37 which outputs the input signal from the television tuner 36 to the buffer memory 20. It is also possible to connect to a video device including a laser disc player (LDP), a computer, or the like. For example, a video image is displayed on the liquid crystal display unit 103 by connecting a video cassette recorder or the like having a video output terminal. It is also possible.

Further, the conventional videophone device for compressing and transmitting image data and audio data is made on the assumption that it is a stationary type, and once installed, it can be moved to another place for use. Although it was impossible, in the present embodiment, due to the high image quality of the liquid crystal display device in recent years, a color TFT type LCD is used for the image display portion, so that the size and weight can be significantly reduced and the portability is improved. In addition, the power consumption can be reduced.

As described above, the videophone device 100 is not only formed to be small and lightweight, but each part of the housing 101 is provided with each part necessary for the videophone device 100.
It is provided without protruding from 1. Particularly, in the camera unit 102, the image pickup unit such as the lens 102a is provided in the housing 1.
It is attached to the housing 101 in a state of being recessed from 01, and even if it is stored in a bag or the like and carried, the videophone device 10
0, in particular, the camera unit 102 is not damaged. As a result, the videophone device 100 is much more portable. It should be noted that in the present embodiment, the housing 101 is recessed from the housing 101,
However, it may be mounted so as to be substantially flush with the housing 101. Also in this case, similarly, the portability of the videophone device 100 can be improved.

In the first embodiment, the casing 151 of the video telephone station 150 is formed in a rectangular parallelepiped larger than the lateral direction and depth of the casing 101 of the video telephone device 100, but this is not the only option. Not a thing. For example, as shown in FIG. 13, a housing 181 of the videophone station 180 on which the videophone device 100 is mounted is
You may form in the thin rectangular parallelepiped of the same size as the width direction and depth of the housing 101 of the video telephone apparatus 100. Note that, in FIG. 13, the same components as those in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

Thus, the video telephone station 180
If the casing 181 of the above is formed in a shape that matches the casing 101 of the videophone device 100, the casing will have an integrated shape when the videophone device 100 is docked with the videophone station 180, and can be easily carried as an integrated type. Become.

The image data compression method is not limited to the JPEG algorithm in this embodiment, and may be, for example, a block coding method, a predictive coding method, an orthogonal transform coding method, or the like. The data compression method is not limited to the CELP algorithm in this embodiment, but may be, for example, AD-PCM (Adaptive Differentia).
l Pulse Code Modulation method, VSELP (Vector
The Sum Excited Linear Prediction) method or the like may be used.

Second Embodiment FIGS. 14 to 16 are views showing a second embodiment of a videophone device according to the present invention. This embodiment shows a pocket-type videophone device having a built-in telephone function on the station side. Here is an example.

First, the structure will be described. FIG. 14 is a diagram for explaining a connection relationship of a pocket-type video telephone device equipped with a video telephone station, and FIG.
4 is an external view of a videophone device including the videophone station 4 of FIG. The case where an analog telephone general subscriber line is used as a communication line will be described below. In the description of the present embodiment, the same components as those of the videophone device of the first embodiment will be designated by the same reference numerals, and duplicated description will be omitted.

In FIG. 14, a videophone device equipped with the videophone station of this embodiment transmits and receives high-quality images, and adopts a liquid crystal display device to reduce its size and weight, and has a built-in telephone function. Videophone device 3 that can be detachably connected to the station and can be carried around
00 and the videophone device 300 are detachably connected, and are also connected between the telephone line 201 and the telephone 202 to send image data and voice data via the telephone line.
It is composed of a videophone station 350 for receiving.

The videophone station 350 on which the above-mentioned videophone device 300 is mounted is installed between the telephone jack 202 and the modular jack type outlet 201 connected to the analog public line, and connected to the analog public line on the rear surface thereof. LINE side input / output terminal 1L for connecting to the telephone 202 and TEL side input / output terminal 1T for connecting to the telephone 202.

The modular jack 204 and the LINE side input / output terminal 1 are connected by the modular cable 204 having the modular plugs 203 at both ends.
L is connected to each, and TEL side input / output terminal 1T
And the telephone 202 are connected to each other.

In FIG. 15, the videophone device 300 is shown.
Has a casing 301 formed in a rectangular parallelepiped with a small depth. The casing 301 has a length of 65 mm, a width of 60 mm, and a thickness of 2 mm.
It is formed in the shape of a thin rectangular parallelepiped having a length of 4 mm and elongated in the vertical direction.

The housing 301 includes a camera section 302, a liquid crystal display section 303, a key input section 304, and a power switch 30.
5, volume dial 306, earphone terminal 307,
A changeover switch 308, a tuning button 309, and a power indicator 310 are provided.

The camera section 302 is a small CCD (Charge Couco) arranged in the same plane direction as the display surface of the liquid crystal display section 303.
pled Device) A camera.

The liquid crystal display unit 303 has a screen size of 1.4.
It is an active matrix type liquid crystal display device of inch type TFT, and has three primary colors of R (Red) and G (Gr).
It has a high resolution color liquid crystal display panel of 220 × 279 = 61380 pixels in which pixels corresponding to een) and B (Blue) are arranged in a delta shape.

The key input unit 304 is used for the video telephone 30.
This is for the operator to instruct the selection of various processes in 0.

The volume dial 306 is for adjusting the earphone volume, and is a changeover switch 308.
Is a switch for switching between various modes. Also,
The earphone terminal 307 is a terminal for connecting an earphone that also serves as a wire antenna, and also has a function as an antenna terminal.

The tuning button 309 is for instructing up or down of the tuning frequency, and the power indicator 310 displays ON / OFF of the main power supply of the videophone device 300 by the power switch 305.

As shown in FIG. 14, on the bottom surface of the housing 301, an I / O port for connecting to an I / O port (not shown) provided in a recess of the housing 351 of the videophone station 350, which will be described later, is connected. An O port 311 is provided.

By thus forming the casing 301 of the videophone device 300 in a vertically long shape and making it smaller and lighter, it can be stored in a pocket of clothes or the like and can be carried further. You can

On the other hand, the above video telephone station 350
Is a station that extends or complements the functions of the videophone device 300 by being docked with the lightweight and small-sized videophone device 300 that can be carried and used. The videophone station 150 of the first embodiment described above.
It has the same function as. The videophone station 350 of the present embodiment is internally provided with a modem (MODEM: MOdul).
ation and DEModulation) and NCU (Network Contro)
l Unit), and is connected between a telephone line 201 and a telephone 202 as shown in FIG. 14, and sends image data and voice data through the telephone line 201 by a built-in telephone function. To receive.

In this case, the videophone station 350
Since it is assumed that it is installed at home or the like, the videophone station 350 can be kept connected to the telephone line 201 and the telephone 202 at all times. Even when transmitting and receiving data to and from 300, it is sufficient to place it in the videophone station 350.

In FIG. 14, in the videophone station 350, the casing 351 stably mounts the pocket-type videophone device 300 in a state in which the pocket-type videophone device 300 is tilted at a predetermined angle so that the user can easily recognize it. Storage part 351a
The storage unit 351a has a videophone device 30.
When the 0 is docked, the housing 3 of the videophone device 300 so that the videophone device 300 can be erected with a gentle inclination.
01 is formed in a shape slightly larger than the lateral direction and the depth, and the portion that supports the back surface of the housing 301 has a shape that extends upward by a predetermined height. Therefore, by storing the bottom of the videophone device 300 in the storage portion 351a of the housing 351 of the videophone station 350, the videophone device 300 is docked to the videophone station 350 as shown in FIG.

Further, at the bottom of the housing portion 351a of the casing 351, the I / O provided at the bottom of the videophone unit 300 is provided.
An I / O port (not shown) for connecting to the O port 311 is provided. Therefore, the videophone device 300
Is docked in the housing portion 351a of the housing 351 of the videophone station 350, the I / O ports 311 are engaged and connected to each other, and data transmission / reception between the videophone device 300 and the videophone station 350 can be performed. It will be possible.

On the back surface of the housing 350, as shown in FIG. 14, LINE side input / output terminals 1L and TEL side input / output terminals 1T, and pin terminals 35 for inputting / outputting video signals.
2 and pin terminals 353 and 3 for inputting and outputting audio signals
54, a VHF antenna terminal 355 for inputting a VHF signal, a UHF antenna terminal 356 for inputting a UHF signal, and an S terminal 3 for inputting / outputting a video signal.
57 and a power cord (not shown) are provided.

The videophone device 30 shown in FIG.
0 and the videophone station 350 are block diagrams showing the schematic configurations of the videophone station 100 and the videophone station 15 shown in FIGS. 6 and 7 of the first embodiment.
Since it has the same configuration as the schematic configuration block diagram of No. 0, description of this part will be omitted. Further, although the power switch, the LED, the dip switch and the like are not shown in the video telephone station 350 shown in FIG. 14, it goes without saying that the same components as the video telephone station 150 may be provided.

Next, the operation of the second embodiment will be described.

In this embodiment, the videophone device 30 is used.
The housing 301 of No. 0 is formed in a thin rectangular parallelepiped and is highly portable, and by mounting it on the videophone station 350, it is possible to add a telephone function to the videophone device 300. Three
Connected between the telephone line 201 and the telephone 202 via the telephone line 50, image data and voice data can be sent / received via the telephone line 201. In particular, since the main body of the videophone device 300 is extremely lightweight and compact, the videophone device 300 can be stored in a bag, a pocket of clothes, or the like, which is more portable.

[0209] The videophone device 300 is mounted on the videophone station 350 and operates as described below to send and receive image data and audio data.

The videophone device 300 in the description of the operation of this embodiment is assumed to be mounted on the videophone station 350, and the first operation mode for processing image data and audio data and the TV during communication. The videophone device 300 is provided with each operation mode including a second operation mode for receiving the broadcast and displaying the received image.
Is in the power-off state or the power-on state in the second operation mode, the LINE in the videophone device 300.
The side input / output terminal 1L and the TEL side input / output terminal 1T are connected in a through state, and the voice signal of the telephone 202 is directly output from the TEL side input / output terminal 1T to the analog public line via the LINE side input / output terminal 1L. On the other hand, the voice signal input from the analog public line is transmitted from the LINE side input / output terminal 1L to the telephone side 2 via the TEL side input / output terminal 1T.
It is directly input to 02.

When the videophone device 300 is in the power-on state and in the first operation mode, the voice signal of the telephone set 202 is taken into the videophone device 300 through the TEL side input / output terminal 1T, and once the ADC 26 performs A / D conversion. After the conversion, the audio compression / decompression circuit 27 compresses the data by a predetermined compression process and outputs the compressed data to the bus 15. The audio signal output to the bus 15 is combined with the image signal by the CPU 16, modulated by the modem 30 and the NCU 31, and output to the LINE side input / output terminal 1L.

On the other hand, an input signal input from the analog public line through the LINE side input / output terminal 1L is demodulated by the modem 30 and the NCU 31 on the side of the video telephone station 350, and then the DSP (Digital Si) inside the modem 30.
It is A / D converted by gnal Proceser) and output to the bus 15. Then, the image signal and the audio signal output to the bus 15 are separated into the image signal and the audio signal by the CPU 16, the audio signal is expanded by the audio compression / expansion circuit 27, and further D / A converted by the DAC 29, and then the TEL.
It is output to the side input / output terminal 1T.

As described above, in the videophone device of this embodiment, the housing 301 is formed in a vertically long pocket type, and the liquid crystal display unit 303 is adopted to reduce the size and weight of the portable telephone. Videophone device 3 that enables users
00 and a videophone station 350 having a built-in telephone function that extends or complements the functions of the videophone device 300. The videophone station 350 includes a modular jack type outlet 201 and a telephone 202 connected to an analog public line. And a housing 351 for housing the videophone device 300 in a state in which the videophone device 300 is tilted at a predetermined angle so that the user can easily view it. LINE side input / output terminal 1L for connecting to the line and telephone 202
And a TEL-side input / output terminal 1T for connecting the videophone device 300 to the videophone station 350 by docking the videophone device 300 so that image data and audio data can be transmitted / received via the telephone line. ,
The main body of the videophone device 300 is further reduced in size and weight, and can be stored in a pocket of clothes or the like and can be carried further, and the main body of the videophone device 300 can be further improved. When docked at the station 350, image data and audio data can be transmitted bidirectionally via a telephone line by a telephone function built in the station.

That is, also in the present embodiment, just as in the case of the first embodiment, the main body of the videophone device 300 is simply placed on the videophone station 350, and the input / output terminals and the power supply terminals are connected one by one. It can be used as a videophone without any, and the usability can be greatly improved.

Further, even in this embodiment, since the telephone function is provided in the video telephone station 350,
The circuit configuration of the main body of the videophone device 300 becomes relatively simple, and the size and weight of the main body of the videophone device 300 can be further reduced.

Further, the video telephone station 350 of this embodiment, in addition to the LINE side input / output terminal 1L and the TEL side input / output terminal 1T, has an I / O port (not shown) for inputting / outputting data and a video signal. Pin terminals 352 for input / output, pin terminals 353 for inputting / outputting audio signals
354, a VHF antenna terminal 355 for inputting a VHF signal, and a UHF antenna terminal 356 for inputting a UHF signal are provided. Therefore, not only the telephone function but also the telephone function as in the videophone station 150 of the first embodiment. It is possible to exchange predetermined data with an external terminal through the station 350 having these input / output terminals.

In the second embodiment, the housing 351a for stably mounting the housing 351 of the videophone station 350 in a state in which the housing 351 is inclined at a predetermined angle so that the user can easily see it. Although the shape is provided, the present invention is not limited to this, and it goes without saying that any configuration may be used as long as it is a station that extends or complements the function of the videophone device 300 by docking the videophone device 300.

Third Embodiment FIGS. 17 to 22 are views showing a third embodiment of the videophone device according to the present invention. In this embodiment, a station side, a telephone function and a predetermined power supply for the videophone device body are provided. It is an example of a videophone device provided with a power supply circuit for supplying the.

First, the structure will be described. FIG. 17 is a diagram for explaining a connection relationship of a videophone device equipped with a videophone station, and FIG. 18 is an external view of a videophone device equipped with the videophone station shown in FIG.
9 is an external view showing the back surface of the videophone device of FIG. 18, FIG. 20 is an external view showing the back surface of the videophone station of FIG. 18, FIG. 21 is an overall configuration block diagram of the videophone device, and FIG. It is a whole block diagram of a videophone station. The case where an analog telephone general subscriber line is used as a communication line will be described below. In the description of the present embodiment, the same components as those of the videophone device of the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

In FIG. 17, a videophone device equipped with a videophone station according to the present embodiment has a built-in telephone function, and is a small and lightweight videophone device 400 that can be used as a videophone at the carrying destination. , Videophone device 40
0 is detachably mountable, and the video telephone device 40
When 0 is placed, a predetermined power is supplied to the main body of the videophone device, and the built-in telephone function replaces the telephone function in the videophone device 400 to send the image data and the voice data through the telephone line. And a receivable videophone station 450.

The videophone device 400 is a lightweight and compact videophone device that can be carried around and has a telephone function with a modem (MODEM: MOdulation and DEModulation) and an NCU (Network Control Unit). The cellular phone is connected to the cellular phone line 201 or the cellular phone 202 of the cellular phone as needed, and the image data and the audio data are transmitted via the telephone line 201 by the built-in telephone function.
To receive.

That is, the videophone unit 400 having the built-in telephone function can be installed between the telephone jack 202 and the modular jack type outlet 201 connected to the analog public line, and can be installed on the back of the analog public line. It is provided with a LINE side input / output terminal 1L for connection and a TEL side input / output terminal 1T for connection with the telephone 202.

[0223] Then, the videophone device 400 is connected to the modular jack type outlet 2 by the modular cable 204 having the modular plugs 203 at both ends.
01 and LINE side input / output terminal 1L are respectively connected,
Further, the TEL-side input / output terminal 1T and the telephone 202 are respectively connected.

Therefore, the videophone device 400 has a telephone function including a modem (MODE: MOdulation and DEModulation) and an NCU (Network Control Unit) as shown in FIG.
The image data and the audio data are sent and received via the telephone line 201 by the built-in telephone function.

In FIG. 18, the videophone device 400 is shown.
The casing 401 is formed in a rectangular parallelepiped with a small depth, and the casing 401 is formed in the shape of a thin rectangular parallelepiped elongated in the lateral direction.

On the upper left side of the casing 401, the camera unit 10
2 is attached, and the camera unit 102 includes a housing 40
It is supported by the upper end of 1 so as to be rotatable 180 degrees in the front-rear direction. Therefore, the camera unit 102 uses the lens 10
2a can be adjusted to an angle of 180 degrees from the front direction of the housing 401 to the upper direction and the rear direction.
Without changing the direction of the
The subject can be photographed at an angle of 0 degree.

Further, the liquid crystal display unit 103 and the key input unit 104 are provided on the front surface of the housing 401, and the housing 4
A power switch 105 is provided on the side surface of 01. The liquid crystal display unit 103 has a DD as described later with reference to FIG.
(Display Driver) 34, LCD (Liquid Crystal Dis
play) 35, and the key input unit 104 is composed of a plurality of key switches 10 for the operator to instruct when selecting various processes in the videophone device 400.

Further, on the upper surface of the casing 401, the volume dial 106 for adjusting the volume of voice and the earphone terminal 1 are provided.
07, changeover switch 108 for changing over various modes,
109, and a power indicator 110 for displaying ON / OFF of the main power source. In addition, on the bottom surface of the casing 401, a power supply terminal 45 provided in a recess 451a of a casing 451 of a videophone station 450 described later.
2 and a power supply terminal (not shown) for supplying a direct current voltage of a predetermined voltage value to the videophone device 400, and a recess 151 of the casing 151 of the videophone station 150.
I for connecting to the I / O port 152 provided in a
An / O port (not shown) is provided.

Further, on the back surface of the casing 401, as shown in FIG. 19, LINE side input / output terminals 1L and TEL side input / output terminals 1T and I / O for inputting / outputting data using a predetermined cable. And a port 402.

On the other hand, the above-mentioned video telephone station 450
Is a station that extends or complements the functions of the videophone device 400 by being docked with a lightweight and compact videophone device 400 that can be carried and used. The videophone station 450 of the present embodiment is In addition to the telephone function of the videophone station 150 of the first embodiment, a power supply circuit for supplying a DC voltage of a predetermined voltage value to the videophone device 400 is provided.

Referring to FIG. 18, a casing 451 of the video telephone station 450 has the above-mentioned video telephone device 400.
Is formed in a rectangular parallelepiped shape that is larger than the lateral direction and the depth of the casing 401 of the casing 401.
00 is docked, it is formed in a rectangular parallelepiped shape in which the vertical direction is lower than the horizontal direction and the depth so that the videophone device 400 can stably stand upright.

As shown in FIG. 20, a recess 451a is formed in the center of the upper part of the housing 451 for surely mounting the videophone device 400 at a predetermined position. Recess 4 at the center of the top of the housing 451
The video telephone device 400 is docked to the video telephone station 450 by mounting it on the display device 51.

An I / O port 452 for connecting to an I / O port (not shown) provided on the bottom of the videophone device 400 is provided on the right side of the center of the recess 451a of the casing 451. On the left side of the center of the recess 451a of
A power supply terminal 452 for connecting to a power supply terminal 51a (FIG. 21) provided on the bottom of the videophone device 400.
Is provided. Therefore, the videophone device 400 is
Recessed portion 45 of housing 451 of videophone station 450
When docked at 1a, the I / O ports 452 are engaged and connected to each other, data can be transmitted / received between the videophone device 400 and the videophone station 450, and the power supply terminals are in contact with each other. Then, the DC telephone voltage of the predetermined voltage value is supplied to the video telephone device 400 from the video telephone station 450 side.

A power switch 153 for turning on / off the power of the videophone station 150 is provided on the front surface of the casing 451.

Further, on the back surface of the housing 451, as shown in FIG. 20, LINE side input / output terminals 1L and TEL side input / output terminals 1T, and I / O for inputting / outputting data using a predetermined cable. A port 157, a pin terminal 158 for inputting / outputting a video signal, pin terminals 159, 160 for inputting / outputting an audio signal, a VHF antenna terminal 161 for inputting a VHF signal, and a UHF signal are input. There are provided a UHF antenna terminal 162 for inputting, an S terminal 163 for inputting / outputting a video signal, and a power cord 164.

In this case, the video telephone station 450
Since it is thought that it is often installed at home etc., the LINE side input / output terminal 1L and the TEL side input / output terminal 1T of the videophone station 450 are always connected to the telephone line 201 and the telephone 202 at home. Try to leave it as it is. In this way, the video telephone 400 is connected to the telephone line via the video telephone station 450 simply by mounting the video telephone 400 on the video telephone station 450.

The videophone device 400 has a circuit configuration as shown in FIG. In addition, in FIG.
The same components as those shown in FIGS. 6 and 7 of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 21 is a block diagram showing a schematic structure of the videophone device 400 shown in FIGS. 18 and 19.
In FIG. 21, the videophone device 400 includes a camera unit 1
02, liquid crystal display unit 103, control unit 11, image processing unit 1
2, a voice processing unit 13, a modulation / demodulation unit 14, and a key input unit 104, a control unit 11, an image processing unit 1
2, the audio processing unit 13, the modulation / demodulation unit 14, and the I / O port 50a are connected to the bus 15.

The camera unit 102, like the camera unit 102 of the first embodiment, is composed of a lens 32 and a CCD 33, and outputs an image signal (analog signal) of the photographed subject to the ADC 21 of the image processing unit 12. Output to.

The image processing section 12 is provided with two video memories 22, 23 and a buffer memory 55 in addition to the image compression / expansion circuit 19, ADC 21 and DAC 24 of the first embodiment. Video memories 22 and 23 are VRA
Video memory 2 which is composed of M (Video RAM)
Reference numeral 2 is a semiconductor image memory for storing image data (digital data) output from the ADC 21.
The video memory 23 also stores image data (digital data) compressed / expanded by the image compression / expansion circuit 19.
Is a semiconductor memory for storing, and has a display buffer inside. The buffer memory 20 is for image compression /
In the image compression processing and the image expansion processing of the expansion circuit 19, the image data during the image compression / expansion processing is temporarily stored.

The liquid crystal display section 103 is composed of the DD 34 and the LCD 35 as in the first embodiment.

The voice processing unit 13 has a voice compression / expansion circuit 27, an ADC 26 and a DAC 29 similar to those of the first embodiment.
In addition to the above, a buffer memory 20 is provided, and the buffer memory 20 temporarily stores the audio data being compressed / expanded by the audio compression / expansion circuit 27.

I / O port (Input / Output port) 50
Reference numeral a denotes an input / output mechanism that takes in necessary data from the outside and outputs the data to the videophone station 450.

The power supply circuit 51 is provided with a rechargeable battery, a voltage adjusting circuit, etc., adjusts the voltage of the power supply of the rechargeable battery with the voltage adjusting circuit, etc., and supplies the power to each part of the videophone device 400. The power supply terminal 51a is connected to the power supply circuit 51, and DC power is supplied from the power supply circuit 175 of the videophone station 450. Power supply circuit 5
1 charges an internal rechargeable battery with a DC power supply supplied from the videophone station 450 side through the power supply terminal 51a, and adjusts the voltage of the DC power supply to each part of the videophone device 400. Supply power. Although the power supply circuit 51 uses a rechargeable battery in the present embodiment, a non-rechargeable battery such as a dry battery may be used.

The CPU 171 controls each unit in the videophone station 450 and executes a communication control program according to the type of communication line to be connected. Also, C
When the videophone device 400 is placed on the videophone station 450, the PU 171 receives the image data and audio data multiplexed and transmitted from the videophone device of the other party, and demodulated by the modulation / demodulation unit 14. Input, the demodulated image data and audio data are separated, compressed image data is output to the image compression / decompression circuit 19 of the videophone device 400, and the compressed audio data is compressed by the videophone device 400. The data is output to the expansion circuit 27.

Further, the CPU 171 multiplexes the compressed image data input from the image compression / expansion circuit 19 of the videophone unit 400 and the compressed audio data input from the audio compression / expansion circuit 27 to obtain the image data and the audio data. Is output to the modulation / demodulation unit 14.

The RAM 172 is a semiconductor memory for storing program data used in the program processing executed by the CPU 171, voice data to be transmitted, and the like.

The ROM 173 is a semiconductor memory for storing programs and data used in the videophone station 450.

The modulation / demodulation unit 14 uses a modem (MODEM, MOdu
relation and DEModulation) 30, NCU (Network Co
ntrol unit) 31. 1L,
1T is an input / output terminal for a telephone line (in this case, a general subscriber line), 1L is connected to a modular jack type outlet 201 side, and 1T is connected to a telephone 202 side via a modular cable 204, respectively. There is.

The modem 30 and NCU 31 convert serial digital signals output from a computer or terminal device into
A function as a "modulator" that converts and transmits to a transmission signal (analog signal) that can be transmitted on a communication line,
On the contrary, it has a function as a "demodulator" that converts a transmission signal (analog signal) sent through a communication line back into a readable digital signal of a computer or a terminal device. The NCU 31 makes it possible to use a general subscriber line as a communication line to be used. The modem 30 includes an A / D conversion circuit and a buffer memory, A / D converts demodulated data, and temporarily stores the demodulated data in the buffer memory. And the CPU 16
The data stored in the buffer memory is read by the image data and the audio data is separated, and the image data is compressed by the image compression / expansion circuit 19 of the videophone device 400.
The audio data is supplied to the audio compression / expansion circuit 27 of the videophone device 400.

The power supply circuit 175 is used by the video telephone device 4.
00 is a power supply adapter for supplying a DC voltage having a predetermined voltage value.

Next, the operation of the third embodiment will be described.

First, the control section 11 shown in FIG. 21 and FIG.
The operation of the control unit 170 shown in FIG.

The program corresponding to the processing operation of the CPU 16 in the control unit 11 is the RO in the control unit 11 as well.
It is stored in M18. In addition, the CPU of the control unit 170
It is assumed that 171 transfers the control right to the CPU 16 in the control circuit 11 when the videophone device 100 is placed on the videophone station 150 and a predetermined condition is satisfied.

Here, it is assumed that the videophone device 400 in the description of the operation of this embodiment is mounted on the videophone station 450, and the videophone device 400 is
When the videophone device 400 is in the power off state, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T in the videophone device 400 and the videophone station 450 are connected in a through state. In this state, the voice signal of the telephone 202 is transmitted from the TEL side input / output terminal 1T to the LI.
The voice signal input from the analog public line as it is through the NE side input / output terminal 1L is directly output to the telephone set 202 from the LINE side input / output terminal 1L through the TEL side input / output terminal 1T. Is output.

When the videophone device 400 and the videophone station 450 are in the power-on state, the voice signal of the telephone 202 is taken into the videophone device 400 from the TEL-side input / output terminal 1T, and once the ADC 21 performs A / D conversion. After the conversion, the audio compression / expansion circuit 27 compresses the data by a predetermined compression process and outputs the compressed data to the bus 15. The audio signal output to the bus 15 is combined with the image signal by the CPU 16, and the videophone station 4
LI converted by 50 modem 30 and NCU 31
It is output to the NE side input / output terminal 1L.

On the other hand, the input signal input from the analog public line through the LINE side input / output terminal 1L is the modem 3
After being demodulated by 0 and NCU 31, it is A / D converted by a DSP (Digital Signal Processor) in the modem 30 and output to the bus 15. Then, the image signal and the audio signal output to the bus 15 are separated into the image signal and the audio signal by the CPU 16, the audio signal is expanded by the audio compression / expansion circuit 27, and further D / A converted by the DAC 24. It is output to the TEL-side input / output terminal 1L.

As described above, the videophone device of the present embodiment has a built-in telephone function, and is a compact and lightweight videophone device 40 that can be used as a videophone at the carrying destination.
0, the videophone device 400 can be removably mounted, and when the videophone device 400 is mounted, a predetermined power is supplied to the videophone device body and the videophone device is built in by the built-in telephone function. Instead of the telephone function in 400, a video telephone station 450 capable of transmitting and receiving image data and voice data via a telephone line is used. The video telephone device 400 is a modular jack type outlet connected to an analog public line. LINE side input / output terminal 1L installed between 201 and telephone 202, and connected to the analog public line on the rear surface thereof
And a TEL-side input / output terminal 1T for connecting to the telephone 202, and the videophone station 450 includes a power supply circuit for supplying a DC voltage of a predetermined voltage value to the videophone device 400. Since the DC telephone 400 supplies the DC voltage of the predetermined voltage value to the video telephone 400 by docking the video telephone 400 to the video telephone station 450, the main body of the video telephone 400 is docked to the video telephone station 450. In addition to the effect that it can be used as a videophone without connecting input / output terminals, power terminals, etc. one by one, immediately after docking, the power supply circuit 175 of the videophone station 450 allows the interior of the videophone device 400 to be immediately connected. DC power supply for rechargeable batteries The charging of the internal rechargeable battery is performed by the DC power source. Therefore, simply placing the main body of the videophone device 400, which has consumed the battery due to portable use, on the videophone station 450, charging is started without replacing the rechargeable battery or connecting a power adapter or the like. Since the battery is sufficiently charged while the battery is in use, the usability is improved and the portable use becomes easier.

Further, since the telephone function is provided in the video telephone device 450, it is possible to send and receive the image data and the voice data via the telephone line only by the main body of the video telephone device 400 when out of the office. Mobile use will be further improved when going out. Of course, the main body of the videophone device 400 can be used as a videophone while being docked in the videophone station 450. By doing so, it is possible to use the videophone device 400 for a long time without worrying about battery consumption. .

In the third embodiment described above, the housing 451 of the videophone station 450 is formed in a rectangular parallelepiped larger than the lateral direction and depth of the housing 401 of the videophone device 400, but the invention is not limited to this. Not a thing. For example, as in the case shown in FIG. 13 of the first embodiment, the videophone station 1 on which the videophone device 400 is mounted is mounted.
The housing 181 of 80 is the housing 40 of the videophone device 400.
1 may be formed into a thin rectangular parallelepiped having the same size as the lateral direction and the depth, and thus the videophone station 180
If the housing 181 of the above is formed into a shape that matches the housing 401 of the videophone device 400, the housing 181 becomes an integral shape when the videophone device 400 is docked with the videophone station 480, and the portability can be further enhanced. .

Further, as a station for expanding or complementing the function of the videophone device, the videophone station 450 of the third embodiment is equipped with a power adapter for supplying a direct current voltage of a predetermined voltage value to the videophone device 400. Although the videophone stations 150 and 350 of the first and second embodiments are provided with a telephone function, any station that extends or complements the functions of the videophone device may be used. It may be a station having both the battery function and the telephone function as in the present embodiment. For example, the configuration may be such that the battery function of the videophone station 450 of FIG. 21 of the third embodiment is added to the videophone station 150 of the first embodiment of FIG.

Fourth Embodiment FIGS. 23 to 27 are views showing a fourth embodiment of the videophone device according to the present invention. In this embodiment, the videophone device main body has a built-in telephone function, and the station side has It is an example of a videophone device provided with a power supply circuit.

First, the structure will be described. FIG. 23 is a diagram for explaining a connection relationship of a pocket type video telephone device equipped with a video telephone station, and FIG.
3 is an external view of a videophone device including the videophone station of FIG. 3, FIG. 25 is an external view of the backside of the videophone device including the videophone station of FIG. 23, and FIG.
It is a figure for demonstrating the power supply circuit of the pocket type | mold video telephone apparatus provided with the video telephone station. In the description of this embodiment, the same components as those of the videophone device of the second embodiment are designated by the same reference numerals, and the description of the overlapping portions will be omitted.

In FIG. 23, a videophone device equipped with the videophone station of this embodiment is connected between a telephone line and a telephone and has a built-in telephone function for transmitting and receiving high-quality images and a liquid crystal display. The device is small and
A videophone station 550 that is lightweight and can be used as a portable device, and the videophone device 500 having a built-in telephone function are detachably connected to each other to extend or complement the function of the videophone device 500. It is composed of and.

The videophone unit 500 is a light and small pocket type videophone unit that can be carried around and has a telephone function having a modem and an NCU therein, as shown in FIG. Telephone line 201 and telephone 202
And the image data and the voice data are transmitted and received via the telephone line 201 by the built-in telephone function.

That is, the videophone device 500 having a built-in telephone function is installed between the telephone jack 202 and the modular jack type outlet 201 connected to the analog public line, and connected to the analog public line on the rear surface thereof. LINE side input / output terminal 1L and TEL side input / output terminal 1T for connecting to the telephone 202.

The above-mentioned video telephone apparatus 500 uses the modular cable 204 having the modular plugs 203 at both ends to connect the modular jack type outlet 2 with the modular cable 204.
01 and LINE side input / output terminal 1L are respectively connected,
Further, the TEL-side input / output terminal 1T and the telephone 202 are respectively connected.

In FIG. 24, the videophone device 500 is shown.
The case 501 is formed in a thin rectangular parallelepiped having a small depth and a long vertical direction. The case 501 has a camera section 302, a liquid crystal display section 303, a key input section 304, a power switch 305, and a volume dial 306. An earphone terminal 307, a changeover switch 308, a tuning button 309, and a power indicator 310 are provided.

The upper part of the back surface of the housing 501 is shown in FIG.
As shown in FIG. 5, a LINE side input / output terminal 1L and a TEL side input / output terminal 1T, and an I / O port 502 for inputting / outputting data using a predetermined cable are provided.

Further, as shown in FIG. 23, the bottom surface of the casing 501 is brought into contact with a power supply terminal (not shown) provided in a housing portion 551a of the casing 551 of the videophone station 550, which will be described later, and the television set is not shown. A power supply terminal 502 for supplying a DC voltage having a predetermined voltage value to the telephone device 500 is provided.

If the casing 501 of the video telephone 500 is formed in a vertically long pocket type to further reduce the size and weight, the portability can be improved.

On the other hand, the above-mentioned video telephone station 550
Is a station that extends or complements the function of the videophone device 500 by docking with a lightweight and small-sized videophone device 500 that can be carried and used. The videophone station 550 of the present embodiment is Like the videophone station 550 of the third embodiment, the videophone device 500 is provided with a power supply circuit for supplying a DC voltage of a predetermined voltage value.

In FIG. 23, in the videophone station 550, the casing 551 stably mounts the pocket-type videophone device 500 in a state in which the pocket-type videophone device 500 is inclined at a predetermined angle so that the user can visually recognize it. Storage part 551a
The storage unit 551a has a videophone device 50.
When the 0 is docked, the housing 5 of the videophone device 500 is arranged so that the videophone device 500 can be erected with a gentle inclination.
01 is formed in a shape slightly larger than the lateral direction and the depth, and the portion that supports the back surface of the housing 501 has a shape that extends upward by a predetermined height.

Therefore, the bottom portion of the videophone device 500 is
Storage part 5 of housing 551 of videophone station 550
The videophone device 500 is docked in the videophone station 550 by being stored in the videophone station 550.

In this case, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T and the I / O port 502 for inputting / outputting data using a predetermined cable are provided on the upper surface of the back surface of the housing 501. Since the videophone device 500 is provided, even if the videophone device 500 is completely housed in the housing portion 551a of the housing 551, the LINE side input / output terminals 1L and TEL are provided.
The side input / output terminal 1T and the I / O port 502 are the housing 501.
Will be exposed above the part that supports the back of the
NE side input / output terminal 1L, TEL side input / output terminal 1T and I /
With the modular plug 203 or the like connected to the O port 502, the video telephone device 500 is connected to the video telephone station 5
50 can be docked. Also, the housing 55
The video telephone device 50
A power supply terminal (not shown) for connecting to the power supply terminal 502 provided on the bottom portion of 0 is provided. Therefore, when the videophone device 500 is docked in the housing portion 551a of the housing 551 of the videophone station 550, the power supply terminals are engaged with each other and connected, and the videophone device 500 is connected to the videophone station 550 side by a predetermined voltage value. It becomes possible to supply the DC voltage of.

FIG. 26 is a diagram for explaining the power supply circuits of the videophone device 500 and the videophone station 550, and schematically shows the part related to the power supply circuit. In FIG. 26, the videophone station 550 is built in the videophone device 500 based on an AC-DC converter 552 for converting a household AC power supply into a predetermined DC power supply and a DC power supply from the AC-DC converter 552. Charging circuit 553 for charging the rechargeable battery 511
And are built in. Further, the videophone device 500 includes a switch 510 for detecting that the videophone device 500 is connected to the videophone station 550, and a charging circuit 553 for the videophone station 550 when the videophone device 500 is connected to the videophone station 550. A rechargeable battery 511 that supplies power to each part of the videophone device 500 while being charged by power supply from the
And when it is detected that the videophone device 500 is coupled to the videophone station 550 by the detection signal from the switch 510, the DC power from the AC-DC converter 552 is supplied to each part of the videophone device 500.
The videophone device 500 is a videophone station 550.
When it is detected that the battery is disconnected from the rechargeable battery 511
And a switching circuit 512 for switching the power supply path so as to supply the DC power supply to the respective units of the videophone device 500.

Since the block diagram showing the schematic structure of the videophone device 500 has the same structure as the block diagram of the videophone device 400 shown in FIG. 21 of the third embodiment, the description of this part will be omitted. To do.

Next, the operation of the fourth embodiment will be described.

In this embodiment, the videophone device 50 is used.
The housing 501 of No. 0 is formed in a thin rectangular parallelepiped and is highly portable, and by mounting it on the videophone station 550, a direct current voltage of a predetermined voltage value is supplied to the videophone device 500 from the videophone station 550 side. The rechargeable battery 511 inside the videophone device 500 is charged by this battery function. That is, when the videophone device 500 is docked in the housing portion 551a of the housing 551 of the videophone station 550, the power supply terminals are engaged with each other to be connected, and the videophone device 500 is connected to the videophone station 5.
A video telephone device 50 in which a DC voltage having a predetermined voltage value is supplied from the 50 side and the rechargeable battery 511 is exhausted by portable use.
0 The main body is placed on the videophone station 550, and charging is started without replacing the rechargeable battery 511 or connecting a power adapter, etc., and sufficient charging is performed during the placement. .

In this case, when it is detected by the detection signal from the switch 510 that the videophone device 500 is coupled to the videophone station 550, the switching circuit 5
The power supply path is switched by 12 and the DC power from the AC-DC converter 552 is supplied to the videophone device 500.
, And when it is detected that the videophone device 500 is detached from the videophone station 550, the DC power from the rechargeable battery 511 is supplied to each part of the videophone device 500.

The main body of the videophone device 500 is the second
Since it is very light and small like the main body of the videophone device 300 of the embodiment, the videophone device 500 can be stored in a pocket of clothes, a bag or the like, which is more portable.

Further, in the conventional video telephone apparatus, generally, it is made on the premise that it is a stationary type, and once it is installed, it is impossible to move to another place and use it. Therefore, in order to transmit compressed data. In addition, the camera unit which is an image input unit, the CRT which is an image display unit, and the telephone which is an audio input / output unit are integrally configured.
Although it was difficult to reduce the weight, it was difficult to obtain a portable device, and the existing telephone could not be used, but in the present embodiment,
Due to the high image quality of liquid crystal display devices in recent years, by adopting a color TFT type liquid crystal display device instead of a conventional CRT as a display device, it is possible to reduce power consumption and to reduce the size and weight of the device. It is possible. In this case, since a small flat fluorescent tube is used for the backlight used in the liquid crystal display device, LC
The D35 portion can be made even thinner, and the size and weight can be greatly reduced.

As described above, in the videophone device of this embodiment, the videophone device 500 is docked to the videophone station 550 so that the videophone device 500 receives a DC voltage of a predetermined voltage value from the side of the videophone station 550. Since the videophone device 500 whose battery has been consumed by portable use is placed on the videophone station 550,
Charging is started without replacing the rechargeable battery or connecting a power adapter or the like, and sufficient charging is performed while the battery is being placed. Therefore, usability is improved and portable use is further facilitated.

Since the videophone device 550 is provided with a telephone function, only the videophone device 500 main body can send and receive image data and voice data through the telephone line. It will be even easier to use on the phone. In this case, the LINE side input / output terminal 1L, the TEL side input / output terminal 1T, and the I / O port 502 support the back surface of the housing 501 even when the videophone device 500 is completely housed in the housing portion 551a of the housing 551. Since it is exposed above the portion, it is of course possible to use the main body of the videophone device 500 while docking it in the videophone station 550, which allows long-term use without worrying about battery drain. It will be possible.

In the fourth embodiment, the housing 551a for stably mounting the housing 551 of the videophone station 550 in a state inclined at a predetermined angle so that the user can easily see it. Although the shape is provided, the present invention is not limited to this, and it goes without saying that any configuration may be used as long as it is a station that extends or complements the function of the video telephone device 500 by docking the video telephone device 300.

The videophone station 550 of the fourth embodiment is an example provided with a power supply adapter for supplying a direct current voltage of a predetermined voltage value to the videophone device 500. Any station may be used as long as it is extended or complemented, and it may be a station having both the battery function and the telephone function. For example, in the videophone device 300 and the videophone station 350 of FIG. 14 of the second embodiment, a fourth
The configuration as shown in FIG. 27 in which the battery function of the video telephone device 500 of the video telephone device 500 of FIG. 24 of the embodiment is added may be adopted. That is, in FIG. 27,
On the bottom surface of the housing 601 of the videophone device 600, an I for connecting to an I / O port (not shown) provided in the housing portion 651a of the housing 651 of the videophone station 650.
A power supply terminal for providing a DC voltage having a predetermined voltage value to the videophone device 600 by providing the / O port 311 and contacting a power supply terminal (not shown) provided in the housing portion 651a of the housing 651. 602 may be provided. As a result, sufficient charging can be performed while image data and audio data are being sent / received via the telephone line, and usability can be further improved.

[0287]

Advantages of the Invention Claims 1, 4, 5, 7, 9, 11 and 1
According to the third aspect of the present invention, it is provided with a videophone device main body having a display unit for displaying image data, and a station for extending or complementing the function of the videophone device main body by docking with the videophone device main body. Since it can be used as a videophone without connecting input / output terminals and power supply terminals one by one, it is possible to remove the need to remove the input / output terminals etc. when carrying and to reconnect the input / output terminals etc. during transmission / reception. It is possible to improve the usability significantly.

According to the second aspect of the present invention, the casing of the main body of the videophone device is formed into a rectangular parallelepiped having a small depth, and the casing of the station is arranged so that the casing of the main body of the videophone device is detachably upright. Since it is formed so that it can be placed, when the videophone device body is stored in a bag or the like, it can be easily carried without a protruding portion, and the portability can be further improved.

According to the third aspect of the present invention, the casing of the station is formed in a rectangular parallelepiped having a thin depth so as to be flush with the casing surface of the main body of the videophone device.
When the videophone device main body is docked in the station, it becomes an integral type without projections, and it can be stored in a bag or the like as it is and can be easily carried, thus further improving portability.

According to the sixth, eighth and tenth aspects of the present invention, a telephone function for transmitting / receiving data to / from a videophone main body equipped with a television tuner and display means for displaying on a liquid crystal display section via a telephone line. With the built-in telephone function, it is possible to transmit image data and voice data bidirectionally through the telephone line by the telephone function built into the main body of the videophone device without docking it to the station. It will be easier to connect the phone in.

According to the twelfth aspect of the present invention, since the station is provided with the power supply means for supplying power to the main body of the videophone device, the main body of the videophone device is simply docked to the station, and the input / output terminals, etc. Image data and audio data can be transmitted in both directions without connecting the device, and the power supply means should start charging the videophone device body and fully charge it while it is placed. You can

According to the fourteenth aspect of the present invention, the videophone main body and the station are provided with input / output ports for inputting / outputting data, and the station is provided with input / output terminals for exchanging predetermined data with an external terminal. Since the main body of the videophone device exchanges predetermined data with the external terminal via the station,
Not only the telephone function to send and receive via telephone line,
Since external data is input / output, the television talking device can be used for more versatile purposes by using these data.

According to the fifteenth aspect of the present invention, the station is provided with a charger for supplying power to the rechargeable battery of the videophone device body, and when the videophone device body is mounted on the station, the videophone device is mounted. Power is supplied from the charger of the station to the rechargeable battery of the main body of the device, so just by placing the videophone device main body that was used as a mobile device on the station, you can replace the rechargeable battery, power adapter, etc. Charging is started without connecting the device, charging is sufficient while it is placed, improving usability, and it becomes even more usable immediately after being removed from the station, making mobile use even easier. can do.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a connection relationship of a videophone device.

FIG. 2 is an external view of the videophone device of FIG.

3 is an external view of the videophone station of FIG.

FIG. 4 is an external view showing the back surface of the videophone station of FIG.

5 is an enlarged view for explaining the configuration of the main part of FIG.

FIG. 6 is an overall configuration block diagram of a videophone device.

FIG. 7 is an overall configuration block diagram of a videophone station.

FIG. 8 is a diagram showing the structure of one frame of a multiplexed code.

FIG. 9 is a flowchart showing a control operation of a control unit of the videophone device.

10 is a flowchart showing the control operation of the control unit continued from FIG.

FIG. 11 is a transition diagram of a communication state during transmission of the videophone device.

FIG. 12 is a transition diagram of communication states at the time of reception by the videophone device.

FIG. 13 is an external view of a videophone device.

FIG. 14 is a diagram for explaining the connection relationship of the videophone device.

15 is an external view of the videophone device of FIG.

FIG. 16 is a diagram for explaining a docking state between a videophone device and a videophone station.

FIG. 17 is a diagram for explaining the connection relationship of the videophone device.

18 is an external view of the videophone device of FIG.

19 is an external view showing the back surface of the videophone device of FIG.

20 is an external view showing the back surface of the videophone station of FIG. 18. FIG.

FIG. 21 is an overall configuration block diagram of a videophone device.

FIG. 22 is an overall configuration block diagram of a videophone station.

FIG. 23 is a diagram for explaining the connection relationship of the videophone device.

24 is an external view of the videophone device of FIG.

FIG. 25 is an external view showing the back surface of the videophone device of FIG. 22.

FIG. 26 is a diagram illustrating a power supply circuit of a videophone device.

FIG. 27 is an external view of a videophone device.

[Explanation of symbols]

1L LINE side input / output terminal 1T TEL side input / output terminal 10 key switch 11,170 control unit 12 image processing unit 13 voice processing unit 14 modulation / demodulation unit 15 bus 16,171 CPU 17,172 RAM 18,173 ROM 19 image compression・ Expansion circuit 20 Buffer memory 21 ADC 22 Video memory 23 Video memory 24 DAC 25 Image input terminal 26 ADC 27 Audio compression / expansion circuit 28 Buffer memory 29 DAC 30 Modem 31 NCU 32 Lens 33 CCD 34 DD 34a Video input terminal 34b Video output Terminal 35 LCD 36 TV tuner 37 ADC 50, 50a, 52, 52a, 157, 311, 45
2,502 I / O port 51 Power supply circuit 100,300,400,500,600 Videophone device 101,301,401,501,601 Housing 102,302 Camera unit 102a Lens 103,303 Liquid crystal display unit 104,304 key Input unit 105, 305 Power switch 106, 306 Volume dial 107, 307 Earphone terminal 108, 308 Changeover switch 109, 309 Tuning button 110, 310 Power indicator 150, 180, 350, 450, 550, 650 Videophone station 151, 181, 351, 451, 551, 651 Housing 151a, 451a, 551a, 651a Recess 153 Power switch 154 LED 155 DIP switch 158, 159, 160, 352, 353, 35 4-pin terminal 161, 355 VHF antenna terminal 162, 356 UHF antenna terminal 163, 357 S terminal 164, 453 Power cord 175 Power supply circuit 201 Modular jack type outlet (telephone line) 202 Telephone 203 Modular plug 204 Modular cable 351a, 551a Storage Parts 453, 502 Power supply terminal 510 Switch 511 Rechargeable battery 512 Switching circuit 552 AC-DC converter 553 Charging circuit

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 30, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction content]

Further, on the upper surface of the casing 101, there is a volume dial 106 for adjusting the volume of voice and the earphone terminal 1.
07, changeover switch 108 for changing over various modes,
A tuning button 109 and a power indicator 110 for displaying on / off of the main power supply are provided.
It should be noted that an I / O port terminal (not shown) for connecting to an I / O port terminal 152 provided in a recess 151a of a housing 151 of a videophone station 150 described later is provided on the bottom surface of the housing 101. ing.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Change

[Correction content]

An I / O port terminal 152 for connecting to an I / O port terminal (not shown) provided on the bottom of the video telephone 100 is provided on the right side of the center of the recess 151a of the housing 151. . Therefore, the videophone device 10
0 is docked in the recess 151a of the casing 151 of the videophone station 150, the I / O port terminal 15
The two are engaged and connected to each other, and it becomes possible to send and receive data between the videophone device 100 and the videophone station 150.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0061

[Correction method] Change

[Correction content]

As shown in FIGS. 2 and 3, a power switch 153 for turning on / off the power of the videophone station 150, an LED 154 for indicating a communication state, a modem 30 described later, and NCU3
A DIP switch 155 for setting the communication environment of No. 1 is provided, and the DIP switch 155 is closed after the setting by a lid 156 for storing the DIP switch provided on the front surface of the housing 151.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0062

[Correction method] Change

[Correction content]

Further, on the back surface of the casing 151, as shown in FIG. 4, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T, and an I / O for inputting / outputting data using a predetermined cable. A port terminal 157, a pin terminal 158 for inputting / outputting a video signal, pin terminals 159, 160 for inputting / outputting an audio signal, a VHF antenna terminal 161 for inputting a VHF signal, and a UHF signal are input. A UHF antenna terminal 162 for inputting, an S terminal 163 for inputting and outputting a video signal, and a power cord 164 are provided. As shown in the enlarged view of the main part of FIG. 5, the back surface of the housing 151 is provided with input / output terminals 1L and 1T, and the input / output terminal modular jack type outlet 201 is provided.
Cable 20 having a modular plug 203 provided between the telephone and the telephone 202 (FIG. 1).
4 connects between them.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0078

[Correction method] Change

[Correction content]

The DAC 24 converts the image signal (digital signal) of the image data stored in the video memory 23 into a signal (analog signal) that can be displayed by the liquid crystal display unit 103 and outputs the signal. In this embodiment, a DAC (D / A converter) is required because an analog data driver is used as a data driver of the LCD 35 described later, but when a digital data driver is used as the data driver. Is this DAC
24 is unnecessary.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Change

[Correction content]

The ADC 26 operates from the telephone 202 to the NCU 3 of the modulation / demodulation unit 14 of the video telephone station 150.
1 and the audio signal (analog signal) input through the I / O ports 52 and 50 is converted into a signal (digital signal) that can be processed in the audio processing unit 13 and output to the audio compression / expansion circuit 27. It is a thing.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0086

[Correction method] Change

[Correction content]

The DD 34 drives the LCD 35 to display an image on the LCD 35 based on the video signal input from the image processing unit 12 or the video signal input from the video input terminal 34a. Is to convert an input video signal into an analog video signal (analog RGB signal) of a predetermined bit with 220 × 279 pixels and output the analog video signal to the LCD 35.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0092

[Correction method] Change

[Correction content]

FIG. 7 is a block diagram showing a schematic configuration of the videophone station 150 shown in FIG. In FIG. 7, the videophone station 150 includes a modulation / demodulation unit 14, an I / O port 52, an LED 154, a DIP switch 155, and a control unit 170.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Name of item to be corrected] 0113

[Correction method] Change

[Correction content]

When the videophone device 100 and the videophone station 150 are in the power-on state, the voice signal of the telephone set 202 is taken into the videophone device 100 from the TEL side input / output terminal 1T, and once the ADC 26 A / D. After the conversion, the audio compression / expansion circuit 27 compresses the data by a predetermined compression process and outputs the compressed data to the bus 15. The audio signal output to the bus 15 is combined with the image signal by the CPU 16, and the videophone station 1
LI converted by 50 modem 30 and NCU 31
It is output to the NE side input / output terminal 1L.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0114

[Correction method] Change

[Correction content]

On the other hand, the input signal input from the analog public line through the LINE side input / output terminal 1L is the modem 3
After being demodulated by 0 and NCU 31, it is A / D converted by a DSP (Digital Signal Processor) in the modem 30 and output to the bus 15. Then, the image signal and the audio signal output to the bus 15 are separated into the image signal and the audio signal by the CPU 16, the audio signal is expanded by the audio compression / expansion circuit 27, and further D / A converted by the DAC 29. It is output to the TEL-side input / output terminal 1L.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0118

[Correction method] Change

[Correction content]

Then, the compressed image data is transferred to the bus 15
And via the I / O ports 50 and 52 to the modulation / demodulation unit 14 of the videophone station 150.
Is transmitted to the communication partner. Here, when it is desired to record a self-portrait (transmission image) displayed on the LCD 35 during a call, the operator uses the key switch 1 for image recording.
By pressing 0, the image data is stored in the video memory 23.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0119

[Correction method] Change

[Correction content]

In this case, since the amount of image data for one screen is 211,200 bits (about 25.8 kilobytes), if the capacity of the video memory 23 is 256 kilobytes, the amount of image data for about 9 to 10 screens is enough. Can be stored. By the way, since the amount of compressed image data for one screen is 14400 bits (about 1.76 kilobytes), in order to store the compressed image data for 10 screens, the image data storage area in the RAM 17 Would be about 18 kilobytes.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0120

[Correction method] Change

[Correction content]

In the voice transmission process, the voice data input from the handset of the telephone 202 is the modulation / demodulation unit 14 of the video telephone station 150, and the I / O ports 52, 5.
The audio data is output to the ADC 26 of the videophone device 100 via 0, and the audio data is compressed by the audio compression / expansion circuit 27 by a predetermined compression process.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Name of item to be corrected] 0122

[Correction method] Change

[Correction content]

In the image receiving process, the modulation / demodulation unit 14 of the videophone station 150 determines the presence / absence of an image reception signal. If there is an image reception signal, the demodulated image data is the I / O ports 52, 50 and the bus 15. The image data output to and received by the image processing unit 12 via
It is expanded by the image compression / expansion circuit 19.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Name of item to be corrected] 0133

[Correction method] Change

[Correction content]

If it is determined that the telephone is not in a call state at present, it is determined whether or not the image on / off switch of the key switch 10 has been pressed (step S7). If not, the process of step S2 is started. Will be executed again.
As a result, the loop A is not in the call state but in the state in which the image on / off switch of the key switch 10 is not pressed.
Make up.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Name of item to be corrected] 0136

[Correction method] Change

[Correction content]

Next, a key scan is performed to check whether there is an input from the key switch 10 (step S11), and it is determined whether or not a call is in progress by monitoring the line voltage level of the NCU 31. At the same time (step S12), when no call is being made, it is determined whether or not the image on / off switch of the key switch 10 has been pressed (step S13). If the image on / off switch of the key switch 10 is not pressed in the determination process of step S13, the process is repeated from step S10. This allows
A loop B in which the video on / off switch of the key switch 10 is pressed, not in the call state, is configured. Also,
In the determination process of step S13, if the video on / off switch of the key switch 10 is pressed, the screen displayed on the LCD 35 of the liquid crystal display unit 103 is erased (step S14), and the process of step S2 is performed. Will be executed again.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Name of item to be corrected] 0137

[Correction method] Change

[Correction content]

That is, when the user is not in a call, by pressing the video on / off switch to turn it on, the video image taken by the camera 102 of the videophone device 100 can be displayed and output on the liquid crystal display section 103, and in this state. Then, the display of the liquid crystal display unit 103 can be terminated by pressing the image on / off switch to turn it off.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0140

[Correction method] Change

[Correction content]

Then, a key scan is performed to check whether there is an input from the key switch 10 (step S16), and it is determined whether or not a call is currently being made (step S17). In the determination process of step S17, if the call is not in progress, the process is repeated from step S14 and step S2 described above. On the other hand, when it is determined in the determination process of step S17 that the telephone call is currently in progress, it is determined whether or not the image on / off switch of the key switch 10 is pressed (step S18).

[Procedure Amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0141

[Correction method] Change

[Correction content]

In the determination processing of step S18,
When it is determined that the image on / off switch of the key switch 10 is not pressed, the process is repeated from step S16. As a result, the loop C in the call state but not transmitting / receiving the video is configured. On the other hand, in the determination process of step S18, the key switch 1
If the 0 video on / off switch is pressed, the process proceeds to the process shown in FIG.

[Procedure amendment 20]

[Document name to be amended] Statement

[Name of item to be corrected] 0142

[Correction method] Change

[Correction content]

FIG. 10 is a flow chart showing the control operation of the control unit subsequent to FIG. If the image on / off switch of the key switch 10 is pressed in the determination process of step S18, the negotiation process is performed (step S21), and the screen of the liquid crystal display unit 303 is initialized (step S22).

[Procedure correction 21]

[Document name to be amended] Statement

[Name of item to be corrected] 0145

[Correction method] Change

[Correction content]

Here, if a call is in progress, the above step S2 is performed.
The processing from 3 is executed again. As a result, a loop D in a call state and transmitting / receiving a video is formed. On the other hand, when the telephone call is not in progress, the process is repeated from the processes of steps S14 and S2 shown in FIG. That is, when a call is in progress, the image can be transmitted and received by pressing the image on / off switch of the key switch 10.

[Procedure correction 22]

[Document name to be amended] Statement

[Name of item to be corrected] 0156

[Correction method] Change

[Correction content]

Here, during a call, the liquid crystal display unit 103
To record the partner image (received image) displayed on, the operator turns on the image capture switch of the key switch 10. When the image capture switch is turned on, CP
The U 16 transfers the image data stored in the buffer memory 20 to the RAM 17 and stores it in the RAM 17.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0163

[Correction method] Change

[Correction content]

FIG. 11 is a transition diagram of communication states at the time of transmission. In the figure, capital letters and steps (S6, S7, S12, S13, S17, S1
8, S27) corresponds to the flowcharts of FIGS. 9 and 10.

[Procedure correction 24]

[Document name to be amended] Statement

[Name of item to be corrected] 0164

[Correction method] Change

[Correction content]

After the power is turned on, in the on-hook state (loop A), if the image on / off switch of the key switch 10 is pressed once while the screen display of the LCD 35 in the liquid crystal display unit 103 is turned off (Fig. Step S in 9
7 and (a) in FIG. 11), the LCD 35 enters the display state (loop A → loop B), and the camera input image of the camera unit 102 of the video telephone apparatus 100 of the user is displayed on the LCD 35 as a monitor. When the image on / off switch of the key switch 10 is pressed again in this state (see step S13 in FIG. 9 and (b) in FIG. 11), L
The CD display disappears and returns to the original state (loop B → loop A).

[Procedure correction 25]

[Document name to be amended] Statement

[Name of item to be corrected] 0165

[Correction method] Change

[Correction content]

When the receiver is lifted from the on-hook state (loop A) (see (c) in FIG. 11), the state shifts to the off-hook state.

[Procedure Amendment 26]

[Document name to be amended] Statement

[Name of item to be corrected] 0166

[Correction method] Change

[Correction content]

In the off-hook state (loop A), if the image on / off switch of the key switch 10 is pressed once when the screen display of the LCD 35 on the liquid crystal display unit 103 is turned off (step S7 and step S7 in FIG. 9). As shown in (d) of FIG. 11, the LCD 35 is in the display state, and the camera input image from the camera unit 102 of the video telephone apparatus 100 on the self side is displayed on the LCD 35 as a monitor, as in the on-hook state described above. . In this state, when the video on / off switch of the key switch 10 is pressed again (see step S13 in FIG. 9 and (e) in FIG. 11), the LCD monitor display disappears and the original off-hook state is restored ( Loop B → Loop A).

[Procedure Amendment 27]

[Document name to be amended] Statement

[Name of item to be corrected] 0168

[Correction method] Change

[Correction content]

Next, irrespective of whether the LCD 35 is in the monitor display or off, a dial call is made in an off-hook state and a response is established with the other party (steps S6, S12 and (G) in FIG.
(See (h)), the state is changed to the talking state, and the LCD 35 becomes the monitor display on its own side (loop C). In this state, when the other party hangs up the telephone (see step S17 in FIG. 9 and (i) in FIG. 11), the state shifts to the off-hook state, and the monitor display on the LCD 35 also disappears (loop C → loop A). In addition, even when the user hangs up the call during a call (step S17 in FIG. 9 and (j) in FIG. 11)
(See), the state shifts to the on-hook state, and the monitor display on the LCD 35 also disappears.

[Procedure correction 28]

[Document name to be amended] Statement

[Name of item to be corrected] 0169

[Correction method] Change

[Correction content]

When the image on / off switch of the key switch 10 is pressed during the call (loop C) while the LCD 35 displays the monitor (see step S18 in FIG. 9 and (k) in FIG. 11). ), The negotiation of communication with the other terminal is started. As a result, when it is determined that the other terminal and the own terminal cannot communicate with each other (see (l) in FIG. 11), the state returns to the state before the image on / off switch of the key switch 10 is pressed, and the other terminal When the side terminal and the self terminal can communicate with each other, a videophone section is established (see (m) in FIG. 11), and thereafter, mutual communication between image data and audio data is performed (loop C → loop). D).

[Procedure correction 29]

[Document name to be amended] Statement

[Correction target item name] 0170

[Correction method] Change

[Correction content]

In this state, no matter how many times the image on / off switch of the key switch 10 is pressed, it is ignored (see FIG. 1).
(N in 1). In this state (loop D), when the other party hangs up the telephone (see step S27 in FIG. 10 and (o) in FIG. 11), the state shifts to the off-hook state and L
The CD35 monitor display also disappears (loop D → loop A). Also, even if the receiver puts the handset (see step S27 in FIG. 10 and (p) in FIG. 11), the state shifts to the on-hook state and the monitor display on the LCD 35 disappears (loop D → loop A).

[Procedure amendment 30]

[Document name to be amended] Statement

[Correction target item name] 0175

[Correction method] Change

[Correction content]

During the section of the ringer tone (loop A) (see (r) in FIG. 12), the handset is lifted to respond (step S6 in FIG. 9 and (s) in FIG. 12). However, at this time, unlike the transmitting side, the monitor display is not displayed on the LCD 35 and the display is left (loop A → loop C). However, when the image on / off switch of the key switch 10 is pressed once in the on-hook state (loop A) (see step S7 in FIG. 9 and (t) in FIG. 12), the LCD 35 is in the monitor display state and the self side is displayed. Can be monitored (loop A →
Loop B). At this time, a ringer tone occurs (Fig. 1
(See (u) in 2)), when responding to this ringer tone (see step S12 in FIG. 9 and (v) in FIG. 12), the call is in progress and the LCD 35 remains on the monitor display. By the way, the image on / off switch of the key switch 10 is effective even in the on-hook state and within the ringer tone section.

[Procedure correction 31]

[Document name to be amended] Statement

[Correction target item name] 0179

[Correction method] Change

[Correction content]

Also, the video telephone station 150 is
LINE side input / output terminal 1L and TEL side input / output terminal 1T
In addition, I / O port terminal 1 for inputting / outputting data
57, pin terminals 158 for inputting / outputting video signals, pin terminals 159, 160 for inputting / outputting audio signals, V
A VHF antenna terminal 161 for inputting an HF signal,
UHF antenna terminal 16 for inputting UHF signals
2. Since the S terminal 163 for inputting / outputting the video signal is provided, the main body of the videophone device 100 is connected to the external terminal through the station 150 having these input / output terminals in addition to the telephone function. It is possible to exchange predetermined data between them.

[Procedure correction 32]

[Document name to be amended] Statement

[Correction target item name] 0199

[Correction method] Change

[Correction content]

As shown in FIG. 14, on the bottom surface of the housing 301, an I / O port terminal (not shown) provided in a recess of a housing 351 of a videophone station 350 described later is provided.
An I / O port terminal 311 for connecting to.

[Procedure amendment 33]

[Document name to be amended] Statement

[Correction target item name] 0204

[Correction method] Change

[Correction content]

Further, at the bottom of the housing portion 351a of the casing 351, the I / O provided at the bottom of the videophone unit 300 is provided.
An I / O port terminal (not shown) for connecting to the O port terminal 311 is provided. Therefore, the videophone device 300 is installed in the housing 351 of the videophone station 350.
When docked in the storage portion 351a of the I / O port terminals 311, the I / O port terminals 311 are engaged and connected to each other.
Sending data between 0 and videophone station 350
It becomes possible to receive.

[Procedure amendment 34]

[Document name to be amended] Statement

[Name of item to be corrected] 0216

[Correction method] Change

[Correction content]

Further, the video telephone station 350 of this embodiment has an I / O port terminal (not shown) for inputting / outputting data, a video signal in addition to the LINE side input / output terminal 1L and the TEL side input / output terminal 1T. Terminal 352 for inputting / outputting audio signals, and pin terminal 35 for inputting / outputting audio signals
3, 354, a VHF antenna terminal 355 for inputting a VHF signal, and a UHF antenna terminal 356 for inputting a UHF signal are provided. Therefore, like the videophone station 150 of the first embodiment, only the telephone function is provided. Not a station 35 with these input / output terminals
It is possible to exchange predetermined data with an external terminal via 0.

[Procedure amendment 35]

[Document name to be amended] Statement

[Correction target item name] 0228

[Correction method] Change

[Correction content]

Further, on the upper surface of the casing 401, the volume dial 106 for adjusting the volume of voice and the earphone terminal 1 are provided.
07, changeover switch 108 for changing over various modes,
109, and a power indicator 110 for displaying ON / OFF of the main power source. In addition, on the bottom surface of the casing 401, a power supply terminal 45 provided in a recess 451a of a casing 451 of a videophone station 450 described later.
3 and a power supply terminal (not shown) for supplying a direct current voltage of a predetermined voltage value to the videophone device 400, and a recess 451 of the housing 451 of the videophone station 450.
An I / O port terminal (not shown) for connecting to the I / O port terminal 452 provided in a is provided.

[Procedure correction 36]

[Document name to be amended] Statement

[Correction target item name] 0229

[Correction method] Change

[Correction content]

Further, on the back surface of the casing 401, as shown in FIG. 19, LINE side input / output terminals 1L and TEL side input / output terminals 1T and I / O for inputting / outputting data using a predetermined cable. And a port terminal 402.

[Procedure amendment 37]

[Document name to be amended] Statement

[Correction target item name] 0233

[Correction method] Change

[Correction content]

An I / O port terminal 452 for connecting to an I / O port terminal (not shown) provided on the bottom of the videophone device 400 is provided on the right side of the center of the recess 451a of the casing 451. A power supply terminal 453 for connecting to a power supply terminal 51a (FIG. 21) provided on the bottom of the videophone device 400 is provided on the left side of the center of the recess 451a of the body 451. Therefore, the videophone device 4
00 is docked in the recess 451a of the housing 451 of the videophone station 450, the I / O port terminal 4
52 are engaged and connected to each other, data can be transmitted / received between the videophone device 400 and the videophone station 450, and the power supply terminals are in contact with each other so that the videophone device 400 can receive a videophone call. A direct current voltage having a predetermined voltage value is supplied from the station 450 side.

[Procedure amendment 38]

[Document name to be amended] Statement

[Correction target item name] 0234

[Correction method] Change

[Correction content]

A power switch 153 for turning on / off the power of the videophone station 450 is provided on the front surface of the casing 451.

[Procedure amendment 39]

[Document name to be amended] Statement

[Correction target item name] 0235

[Correction method] Change

[Correction content]

Further, on the back surface of the housing 451, as shown in FIG. 20, LINE side input / output terminals 1L and TEL side input / output terminals 1T, and I / O for inputting / outputting data using a predetermined cable. A port terminal 157, a pin terminal 158 for inputting / outputting a video signal, pin terminals 159, 160 for inputting / outputting an audio signal, a VHF antenna terminal 161 for inputting a VHF signal, and a UHF signal are input. A UHF antenna terminal 162 for inputting, an S terminal 163 for inputting and outputting a video signal, and a power cord 164 are provided.

[Procedure amendment 40]

[Document name to be amended] Statement

[Name of item to be corrected] 0238

[Correction method] Change

[Correction content]

FIG. 21 is a block diagram showing a schematic structure of the videophone device 400 shown in FIGS. 18 and 19.
In FIG. 21, the videophone device 400 includes a camera unit 1
02, liquid crystal display unit 103, key switch 10, control unit 1
1, image processing unit 12, audio processing unit 13, modulation / demodulation unit 1
The control unit 11, the image processing unit 12,
Audio processing unit 13, modulation / demodulation unit 14, I / O port 50
Each a is connected to the bus 15.

[Procedure Amendment 41]

[Document name to be amended] Statement

[Correction target item name] 0240

[Correction method] Change

[Correction content]

The image processing section 12 comprises two video memories 22, 23 and a buffer memory 20 in addition to the image compression / expansion circuit 19, ADC 21 and DAC 24 of the first embodiment. Video memories 22 and 23 are VRA
Video memory 2 which is composed of M (Video RAM)
Reference numeral 2 is a semiconductor image memory for storing image data (digital data) output from the ADC 21.
The video memory 23 also stores image data (digital data) compressed / expanded by the image compression / expansion circuit 19.
Is a semiconductor memory for storing, and has a display buffer inside. The buffer memory 20 is for image compression /
In the image compression processing and the image expansion processing of the expansion circuit 19, the image data during the image compression / expansion processing is temporarily stored. The liquid crystal display unit 103 has the same structure as in the first embodiment.
It is composed of D34 and LCD35.

[Procedure amendment 42]

[Document name to be amended] Statement

[Correction target item name] 0242

[Correction method] Change

[Correction content]

The voice processing unit 13 has a voice compression / expansion circuit 27, an ADC 26 and a DAC 29 similar to those of the first embodiment.
In addition to the above, a buffer memory 28 is provided, and the buffer memory 28 temporarily stores audio data that is being compressed / expanded by the audio compression / expansion circuit 27.

[Procedure amendment 43]

[Document name to be amended] Statement

[Correction target item name] 0269

[Correction method] Change

[Correction content]

The upper part of the back surface of the housing 501 is shown in FIG.
As shown in FIG. 5, a LINE side input / output terminal 1L and a TEL side input / output terminal 1T, and an I / O port terminal 502 for inputting / outputting data using a predetermined cable are provided.

[Procedure correction 44]

[Document name to be amended] Statement

[Correction target item name] 0270

[Correction method] Change

[Correction content]

Further, as shown in FIG. 23, the bottom surface of the casing 501 is brought into contact with a power supply terminal (not shown) provided in a housing portion 551a of the casing 551 of the videophone station 550, which will be described later, and the television set is not shown. A power supply terminal 503 for supplying a direct current voltage having a predetermined voltage value to the telephone device 500 is provided.

[Procedure amendment 45]

[Document name to be amended] Statement

[Name of item to be corrected] 0275

[Correction method] Change

[Correction content]

In this case, the LINE side input / output terminal 1L and the TEL side input / output terminal 1T and the I / O port terminal 502 for inputting / outputting data using a predetermined cable are
Since it is provided on the upper part of the back surface of the housing 501, even when the videophone device 500 is completely housed in the housing portion 551a of the housing 551, the LINE side input / output terminals 1L, T
The EL side input / output terminal 1T and the I / O port terminal 502 are exposed above the portion supporting the back surface of the housing 501, and the LINE side input / output terminal 1L and the TEL side input / output terminal 1 are exposed.
Modular plug 203 to T or I / O port terminal 502
The videophone device 500 can be docked in the videophone station 550 while the above are connected.
The power supply terminal 50 provided on the bottom of the videophone device 500 is provided on the bottom of the housing 551a of the housing 551.
3 is provided with a power supply terminal (not shown). Therefore, when the videophone device 500 is docked in the housing portion 551a of the housing 551 of the videophone station 550, the power supply terminals are engaged and connected to each other, and the videophone device 500 is connected to the videophone station 5.
It becomes possible to supply a DC voltage having a predetermined voltage value from the 50 side.

[Procedure correction 46]

[Document name to be amended] Statement

[Name of item to be corrected] 0284

[Correction method] Change

[Correction content]

Since the videophone device 550 is provided with a telephone function, only the videophone device 500 main body can send and receive image data and voice data through the telephone line. It will be even easier to use on the phone. In this case, the LINE side input / output terminal 1L, the TEL side input / output terminal 1T, and the I / O port terminal 502 are located on the back surface of the housing 501 even when the videophone device 500 is completely housed in the housing portion 551a of the housing 551. Since it is exposed above the supporting portion, it is of course possible to use the main body of the videophone device 500 while docking it in the videophone station 550, which allows long-term use without worrying about battery drain. Will be possible.

[Procedure amendment 47]

[Document name to be amended] Statement

[Name of item to be corrected] 0286

[Correction method] Change

[Correction content]

The videophone station 550 of the fourth embodiment is an example provided with a power supply adapter for supplying a direct current voltage of a predetermined voltage value to the videophone device 500. Any station may be used as long as it is extended or complemented, and it may be a station having both the battery function and the telephone function. For example, in the videophone device 300 and the videophone station 350 of FIG. 14 of the second embodiment, a fourth
The configuration as shown in FIG. 27 in which the battery function of the video telephone device 500 of the video telephone device 500 of FIG. 24 of the embodiment is added may be adopted. That is, in FIG. 27,
An I / O port terminal 311 for connecting to an I / O port terminal (not shown) provided in the housing portion 651a of the housing 651 of the videophone station 650 is provided on the bottom surface of the housing 601 of the videophone device 600. Together with the housing 65
It is also possible to provide a power supply terminal for supplying a direct-current voltage having a predetermined voltage value to the videophone device 600 by making contact with a power supply terminal (not shown) provided in the first storage portion 651a. As a result, sufficient charging can be performed while image data and audio data are being sent / received via the telephone line, and usability can be further improved.

[Procedure correction 48]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Description of Reference Signs] 1L LINE side input / output terminal 1T TEL side input / output terminal 10 key switch 11,170 control unit 12 image processing unit 13 audio processing unit 14 modulation / demodulation unit 15 bus 16,171 CPU 17,172 RAM 18, 173 ROM 19 Image compression / expansion circuit 20 Buffer memory 21 ADC 22 Video memory 23 Video memory 24 DAC 25 Image input terminal 26 ADC 27 Audio compression / expansion circuit 28 Buffer memory 29 DAC 30 Modem 31 NCU 32 Lens 33 CCD 34 DD 34a Video Input terminal 34b Video output terminal 35 LCD 36 TV tuner 37 ADC 50, 50a, 52, 52a I / O port 51 Power supply circuit 51a Power supply terminal 100, 300, 400, 500, 600 Videophone device 101, 301, 401, 501, 601 Housing 102, 302 Camera section 102a Lens 103, 303 Liquid crystal display section 104, 304 Key input section 105, 305 Power switch 106, 306 Volume dial 107, 307 Earphone terminal 108, 308 Changeover switch 109, 309 Tuning button 110,310 Power indicator 150,180,350,450,550,650 Videophone station 151,181,351,451,551,651
Cases 151a, 451a, 551a, 651a Recesses 152, 157, 311, 402, 452, 502
I / O port terminal 153 Power switch 154 LED 155 DIP switch 158, 159, 160, 352, 353, 354
Pin terminal 161,355 VHF antenna terminal 162,356 UHF antenna terminal 163,357 S terminal 164,453 Power cord 175 Power supply circuit 201 Modular jack type outlet (telephone line) 202 Telephone 203 Modular plug 204 Modular cable 351a, 551a Storage section 453, 503 power supply terminal 510 switch 511 rechargeable battery 512 switching circuit 552 AC-DC converter 553 charging circuit

[Procedure correction 49]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

[Procedure amendment 50]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

[Figure 9]

[Procedure correction 51]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

[Procedure amendment 52]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure amendment 53]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 12

[Correction method] Change

[Correction content]

[Fig. 12]

[Procedure Amendment 54]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 23

[Correction method] Change

[Correction content]

FIG. 23

[Procedure Amendment 55]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 27

[Correction method] Change

[Correction content]

FIG. 27

Claims (15)

[Claims] 1. A video telephone main body having a receiving means for receiving image data and audio data, a display means for displaying the image data received by the receiving means, and a docking with the video telephone equipment main body. And a station that expands or complements the function of the main body of the videophone device. 2. A telephone device having a receiving means for receiving image data and audio data, and a display means for displaying the image data received by the receiving means, the casing of which is formed in a rectangular parallelepiped having a small depth. A main body and a casing for mounting the videophone device main body in an upright and detachably mountable manner, and by mounting the casing of the videophone device main body, A station that is electrically connected and that extends or complements the function of the main body of the videophone device. 3. The casing of the station is formed in a rectangular parallelepiped with a thin depth so as to be flush with the casing surface of the main body of the videophone device.
The videophone device according to. 4. The videophone device main body comprises a TV tuner for receiving a TV broadcast, and a display unit for displaying a TV image received by the TV tuner. The videophone device according to any one of 1. 5. The videophone device according to claim 1, wherein the videophone device main body includes a camera that captures a subject as image data. 6. The television according to claim 1, wherein the videophone device main body has a telephone function of transmitting / receiving image data and audio data via a telephone line. Telephone device. 7. The station according to claim 1, wherein the station is connected between a telephone line and a telephone and has a telephone function of transmitting and receiving image data and voice data through the telephone line. 2. The videophone device according to any one of 2 above. 8. The main body of the videophone device comprises modulation / demodulation means for modulating or demodulating image data and audio data, and transmitting the image data and audio data via a telephone line. The videophone device according to claim 2. 9. The station comprises a modulation / demodulation means connected between a telephone line and a telephone, for modulating or demodulating image data and audio data, and transmitting the image data and the audio data through the telephone line. The videophone device according to claim 1, wherein the videophone device is a videophone device. 10. The main body of the videophone device can be installed between a modular jack type outlet connected to a telephone line and a telephone, and has an input / output terminal connected to the telephone line and an input / output connected to the telephone. The videophone device according to claim 1 or 2, further comprising a terminal. 11. The station is installed between a telephone and a modular jack type outlet connected to a telephone line, and has an input / output terminal connected to the telephone line and an input / output terminal connected to the telephone. The videophone device according to claim 1, wherein the videophone device is a videophone device. 12. The videophone device according to claim 1, wherein the station has a power supply means for supplying a predetermined power to the main body of the videophone device. 13. The modulation / demodulation means converts a digital signal into a transmission signal that can be transmitted through a telephone line and transmits the signal, and conversely, a transmission signal transmitted through the telephone line into a digital signal. An NC that enables the use of a modem consisting of a demodulator and a general subscriber line as a telephone line
The videophone device according to claim 8 or 9, wherein the videophone device is composed of U and U. 14. The videophone device body has an input / output port for inputting / outputting data to / from the station, and the station has an input / output port for inputting / outputting data to / from the videophone device body. When the videophone device main body is mounted on the station, the input / output port of the videophone device main body and the input / output port of the station are connected to each other. 3. The main body of the videophone device is capable of exchanging predetermined data with an external terminal via the station.
The videophone device according to any one of 1. 15. The main body of the videophone device has a rechargeable battery and a power supply terminal connected to the rechargeable battery, and the station has a charger for supplying power to the rechargeable battery and the charging. And a power supply terminal connected to the rechargeable battery when the main body of the videophone device is mounted on the station. 3. The videophone device according to claim 1, wherein the rechargeable battery of the main body of the videophone device is supplied with power from a charger of the station by contacting with.