JPH06315146A - Television receiver - Google Patents

Abstract

PURPOSE:To look at image data transmitted through a communication channel by utilizing a liquid crystal display part in a liquid crystal television by providing with a transmitting/receiving block for executing transmission and reception through the communication channel in a housing so as to be freely attachable and detachable. CONSTITUTION:In the television receiver 1 for displaying an image received by a television tuner 9 contained in a housing, on a liquid crystal display part 5 provided integrally with the housing, a camera part 4 for fetching desired subject image data, and a microphone part 6 for fetching voice data are provided integrally in the housing. Also, a transmitting/receiving block for transmitting and receiving both the image data fetched by the camera part 4, and the voice data fetched to the microphone part 6 through a prescribed communication channel is provided in the housing so as to be freely attachable and detachable. In this case, it becomes effective that the transmitting/receiving block is provided with an input/output terminal 25 to the communication cannel, and provided with a modulating/demodulating circuit 8 for modulating the image data and the voice data to be transmitted, and demodulating the received image data and voice data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television device, and more particularly to a small and lightweight television device for transmitting / receiving voice data and transmitting / receiving image data.

[0002]

2. Description of the Related Art In recent years, liquid crystal televisions have become widespread in place of CRTs (Cathode Ray Tubes) and are widely used in the fields of vehicle mounting and sports watching.

In particular, recently, a high-definition liquid crystal television, which is so small that it fits in a chest pocket of a shirt, has been developed, and it has become possible to carry the television at any time when commuting or on a business trip. There is.

[0004]

However, in such a conventional liquid crystal television, the only image that can be seen is the received image of the television broadcast.

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

As described above, it is unreasonable that only voice can be transmitted when using a telephone while carrying a liquid crystal television capable of viewing images.

The present invention has been made in view of such a background, and transmits and receives predetermined image data and audio data using a communication line, and uses the liquid crystal display portion of a liquid crystal television to communicate with the communication line. The purpose is to be able to see the image data sent via.

[0008]

The means of the present invention are as follows.

The invention according to claim 1 is a television device 1 for displaying an image received by a television tuner 9 built in a casing on a liquid crystal display portion 5 provided integrally with the casing. A camera unit 4 for capturing a desired subject image as image data and a microphone unit 6 for capturing audio data are integrally provided in the housing, and the image data captured by the camera unit 4 and the microphone unit are provided. A transmission / reception block 3 for transmitting / receiving the voice data taken in by 6 via a predetermined communication line is detachably provided in the housing.

In this case, as in the invention described in claim 2,
It is effective that the transmission / reception block 3 includes an input / output terminal 25 for the communication line and has a modulation / demodulation circuit 8 for modulating image data and audio data to be transmitted and demodulating the received image data and audio data. Is.

[0011]

The operation of the means of the present invention is as follows.

According to the first aspect of the invention, the camera section and the microphone section are integrally provided in the housing having the liquid crystal display section, and the image data captured by the camera section and the microphone section are provided. A transmission / reception block that transmits and receives captured audio data via a predetermined communication line is detachably attached to the housing, so that image data and audio data are transmitted and received through the communication line in the television device. Therefore, the liquid crystal display portion of the television device can be effectively used.

In this case, as in the invention of claim 2,
By using a modulation / demodulation circuit with an input / output terminal for a communication line as a transmission / reception block, image data and voice data can be transmitted / received using a communication line such as an analog telephone general subscriber line. You can

[0014]

EXAMPLES Examples will be described below with reference to FIGS.

1 to 11 are views showing an embodiment of a television apparatus according to the present invention.

First, the structure will be described. FIG. 1 is an external view showing a television device of the present invention, and FIG. 2 is a view showing a state in which the camera section of FIG. 1 is removed. The case where an analog telephone general subscriber line is used as the predetermined communication line will be described below.

In FIG. 1, the television device 1 is roughly divided into a device body 2 and a modem pack 3, and the device body 2 is a reinforced plastic casing having a length of 65 mm, a width of 60 mm, and a thickness of 24 mm. The camera unit 4, the liquid crystal display unit 5, and the microphone unit 6 are integrally provided in the housing.

The modem pack 3 has a built-in modulation / demodulation circuit 8 and is attached to the lower part of the device body 2 so that predetermined data processed by each circuit in the device body 2 can be processed by the modulation / demodulation circuit 8. Modulation or demodulation.

FIG. 3 is a rear view of the television apparatus 1 of this embodiment shown in FIGS.

In FIG. 3, the modem pack 3 of this embodiment is shown.
Is formed with engaging recesses 22a and 22b that engage with engaging claws 21a and 21b provided in the apparatus main body 2, and
An electrode 23 for power supply and a connector 24 for signal supply are formed.

Further, when the lid 3a formed on the rear surface of the modem pack 3 is opened, a modular jack type LINE side input / output terminal 25 for connection to a general analog telephone subscriber line is connected to an ordinary telephone. Modular jack type TEL side input / output terminal 26, RS-232C terminal 2
7, an indicator 28, and a dip switch 29 are provided.

The power supply unit 7 is built in the device body 2 to supply a predetermined power supply current to each circuit in the device body 2 and the modem pack 3 via the electrodes 23. A dedicated NiCd (Ni-Cd) storage battery housed in the apparatus main body 2 is incorporated. In the present embodiment, the power supply unit 7 has been described as an example in which a dedicated NiCd storage battery is incorporated. However, the power supply unit 7 is not limited to this. For example, a unit in which a plurality of AAA alkaline batteries are incorporated, Commercial AC power supply (AC power supply)
AC adapter type that is used by converting to voltage)
Further, it may be of a car adapter type that uses a DC battery from a cigarette lighter portion of an automobile.

The modulation / demodulation circuit 8 is a modem (MODEM, MOdulat-ion and DEModulati) built in the modem pack 3.
on) 46, and the modem 46 performs modulation for transmitting the image data captured by the camera unit 4 and the audio data captured by the microphone unit 6 via the LINE side input / output terminal 25, and The received data is demodulated.

The modem 46 is an NCU (Networ
It also has a function of a k control unit) 47, by which the modem 46 converts and transmits a serial digital signal output from a computer or a terminal device into a transmission signal (analog signal) that can be transmitted through a communication line. The function as a "modulator" and, conversely, a transmission signal (analog signal) sent via a communication line is converted back into a readable digital signal for a computer or terminal device "demodulator" The NCU 47 enables the use of an analog telephone general subscriber line as a communication line to be used.

Further, since the modem 46 is provided with the TEL-side input / output terminal 26, for example, one line can be used by the modem and the telephone at the time of home use, and the RS-232C terminal can be used. By including 27, various communication can be performed by connecting to the RS-232C terminal of a personal computer, word processor, or the like. By the way, the indicator 28 displays various statuses during communication, and the DIP switch 29
Is for making communication settings for a personal computer, word processor, etc. and its communication software.

As shown in FIG. 2, the camera unit 4 is a small CCD (Charge Coupled Device) camera which is detachably provided in the same surface direction as the display surface of the liquid crystal display unit 5, and is connected via a video cable 4a. It is connected to the device body 2.

The liquid crystal display unit 5 is a TFT type active matrix type liquid crystal display device having a screen size of 1.4 inches, and has three primary colors of R (Red) and G (Green).
n), and a high resolution color liquid crystal display panel of 220 × 279 = 61380 pixels in which pixels corresponding to B (Blue) are arranged in a delta shape.

The microphone section 6 is composed of, for example, an electret condenser type microphone, and as shown in FIG. 1, receives voice data from a microphone hole 6a formed at a lower end position on the front surface of the apparatus main body 2. In this embodiment, an electret condenser type microphone is described as an example of the microphone unit 6, but the microphone unit 6 is not limited to this. For example, a dynamic microphone may be used as the microphone unit 6. It doesn't matter.

Further, the power switch 3 is provided on the main body 2 of the apparatus.
1, power indicator 32, tuning button 3
3, various control switches such as a volume dial 34, an earphone terminal 35, a video on / off switch 36, a video switching switch 37, an image capturing switch 38, etc. are provided.

The power switch 31 is a switch for selecting whether or not to energize the television device 1 with the power supply voltage supplied from the power supply section 7, and the power indicator 32.
Is composed of an LED (Light Emitting Diode) and lights up when the power switch 31 is turned on.

The tuning button 33 is for instructing up or down of the tuning frequency, and the volume dial 34 is for adjusting the earphone volume. The earphone terminal 35 is a terminal for connecting an earphone that also serves as a wire antenna, and also has a function as an antenna terminal.

The video on / off switch 36 is a toggle switch for instructing the liquid crystal display unit 5 whether or not to display an LCD screen, and the video changeover switch 37 is a liquid crystal display unit 5.
The image capture switch 38 is a toggle switch for switching and displaying a transmission screen or a reception screen as a video to be displayed on the display. The image capture switch 38 stores the image displayed on the liquid crystal display unit 5 as image data in a predetermined memory. It is a switch to instruct.

FIG. 4 is a block diagram showing a schematic configuration of the television device 1 shown in FIG. 4, the television device 1 includes a camera unit 4, a liquid crystal display unit 5, a microphone unit 6, a power supply unit 7, a modulation / demodulation circuit 8, a TV tuner 9, an image processing circuit 10, an audio processing circuit 11, and a key operation unit 12. , The control circuit 13, and the modulation / demodulation circuit 8, the image processing circuit 10, the audio processing circuit 11, the key operation unit 12, and the control circuit 13 are connected to the bus B, respectively.

The camera section 4 is composed of a lens 41 and a CCD 42.

The lens 41 is the device body 2 of the television device 1.
The CCD 42 is an optical lens made of glass or plastic, and the CCD 42 generates an electric signal based on the intensity of the light imaged by the lens 41 and outputs the electric signal (analog signal) to the image processing circuit 10. To do.

The liquid crystal display unit 5 is a DD (Display Driver).
43 and an LCD (Liquid Crystal Display) 44. Note that T1 is a video input terminal and T2 is a video output terminal.

The DD 43 drives the LCD 44 to display an image on the LCD 44 based on the video signal input from the image processing circuit 10 or the video signal input from the video input terminal T1. Is
The input video signal is converted into an analog video signal (analog RGB signal) of a predetermined bit with 220 × 379 pixels,
It is output to the LCD 44.

The LCD 44 is composed of a color liquid crystal display device having a liquid crystal panel 69 which will be described later. The LCD 44 in this embodiment has a small flat fluorescent tube 75 which will be described later as its backlight (backside illumination). It is used.

The microphone section 6 outputs the voice data taken in through the microphone hole 6a to the voice processing circuit 11 as voice data to be transmitted.

As described above, the power supply unit 7 is the main body 2 of the apparatus.
It is composed of a Ni-Cd storage battery built in, and supplies a predetermined power supply voltage to each circuit in the apparatus main body 2 and the modem pack 3 when the power switch 31 is turned on.

The modulation / demodulation circuit 8 has a buffer memory 45.
And a modem 46 and an NCU 47.

The buffer memory 45 temporarily stores and holds the image data and voice data demodulated by the modem 46, and temporarily stores and holds the image data and voice data to be modulated multiplexed by the CPU 58. The image data and the audio data stored in the buffer memory 45 are stored in the bus B at the time of demodulation and the modem 46 at the time of modulation based on the control command from the CPU 58.
Is output to.

As described above, the modem 46 and the NCU 47 are connected to the camera section 4 via the LINE side input / output terminal 25.
The modulation for transmitting the image data captured by and the audio data captured by the microphone unit 6 and the demodulation of the received data are performed.

Further, the modems 46 and N in this embodiment are
The CU 47 is capable of signal transmission at 14400 bps, which is the maximum data transmission rate that can be used on an analog telephone general subscriber line. By incorporating a video code and an audio code in one frame which is a processing unit, image data and audio can be transmitted. Data is simultaneously transmitted in both directions, and image data for one screen is transmitted as an intermittent image at a rate of one frame every three seconds.

FIG. 5 is a diagram showing the structure of one frame of the multiplexed code.

The multiplex 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, information about the screen size, the command regarding 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 on one screen, and the image data amount for one screen is 110 × 279 × 12 = 211200. It is a bit (about 25.8 kilobytes). The data is collectively compressed to about 68/1000 by image compression processing and 144
The image data is 00 bits, and the 14400 bits are transmitted by 4800 bits per second, that is, an intermittent still image is transmitted at a rate of 1 frame in 3 seconds (= 14400/4800).

Therefore, the data actually transmitted in one second is obtained by dividing 211200 bits by 3.
This is 0400-bit (about 8.6 kilobytes) image data, and this 70400-bit image data is about 68/1.
The video code is compressed to 000 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 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.

The TV tuner 9 selectively receives a predetermined TV radio wave, converts the received analog video signal into a digital video signal by an ADC incorporated in the TV tuner 9, and the video signal is expanded by an image expansion circuit. It is to be output to the buffer memory 48 in 10.

The image processing circuit 10 includes a buffer memory 4
8. Image compression / expansion circuit 49, ADC (Analog to Digi
tal Converter: A / D converter) 50, video memory (VRAM) 51, 52, DAC (Digital to Analo)
g Converter: D / A converter) 53. Incidentally, T3 is an image input terminal.

The buffer memory 48 temporarily stores the compressed image data compressed by the image compression / expansion circuit 49. The image data stored in the buffer memory 48 in the compressed state is stored in the CPU 58 by the CPU 58. Are sequentially read out based on the control command. By the way, by sufficiently securing the storage capacity of the buffer memory 48,
A plurality of image data captured from the camera unit 4 can be stored in a compressed state, and the television device 1 can also be used as an electronic still camera by utilizing this.

The image compression / expansion circuit 49 uses, for example, JPEG (Joint Photographic) according to a predetermined encoding method of the image data stored in the video memory 51, that is, the type of image to be handled (still image in this case). (Coding)
Experts Group) performs a compression process (encoding) by DCT (Discrete Cosine Transform), quantization, and Huffman encoding for each 8 × 8 pixel block, and is also received via a communication line. , Expands (decodes) the received compressed image data demodulated by the modulation / demodulation circuit 9, outputs the expanded image data to the video memory 52, and stores it. In this case, the communication line Through 110 × 160
Image data sent as a color video signal of a maximum of 4096 colors (12 bits) in pixels includes a luminance signal corresponding to 220 × 279 pixels (hereinafter referred to as Y signal) and a color signal corresponding to 4096 colors (hereinafter referred to as C signal). ) And a YC signal processing function, and the above 110 × 16
12-bit data with 0 pixels is converted into 12-bit digital image data with 220 × 279 pixels. The data compression rate in the image compression processing is about 7/100 (about 68/100) from the relationship with the image quality after decompression.
0).

The ADC 50 converts an image signal (analog signal) input from the camera section 4 into a signal (digital signal) that can be processed in the image processing circuit 10 and outputs the signal to the video memory 51.

The video memories 51 and 52 are VRAM (Vi
deo RAM), and the video memory 51 is an AD
Image data (digital data) output from C50
The video memory 52 is a semiconductor image memory for storing image data (digital data) compressed / expanded by the image compression / expansion circuit 49.

The DAC 53 converts the image signal (digital signal) of the image data stored in the video memory 52 into a signal (analog signal) that can be displayed by the liquid crystal display unit 5 and outputs it. In this embodiment, since the analog data driver is used as the data driver of the LCD 44 described above, a DAC (D / A converter) is required. However, when a digital data driver is used as the data driver. The DAC 53 becomes unnecessary.

The audio processing circuit 11 is composed of an ADC 54, an audio compression / expansion circuit 55, a buffer memory 56, and a DAC 57.

The ADC 54 converts the audio signal (analog signal) input from the microphone unit 6 via the NCU 47 of the modulation / demodulation circuit 8 into a signal (digital signal) that can be processed in the audio processing circuit 11, and compresses the audio. The data is output to the expansion circuit 55.

The audio compression / expansion circuit 55 converts the digital audio data input from the ADC 54 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 B is compressed (encoded), the compressed audio data is output to the buffer memory 56, and the received compressed audio data demodulated by the modulation / demodulation circuit 8 is expanded (decoded). Processing is performed, and the expanded voice data is output to the DAC 57. 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 56 temporarily stores the compressed audio data compressed by the audio compression / expansion circuit 55 and the compressed audio data to be expanded by the audio compression / expansion circuit 55. The voice data stored in the memory 56 in a compressed state is C
It is sequentially read based on a control command from the PU 58.

The key operation section 12 is composed of various operation switches such as the video on / off switch 36, the video changeover switch 37, and the image capturing switch 38 described above, and the key switches are pressed to correspond to the key switches. The processing is executed by the CPU 58.

The control circuit 13 is a CPU (Central Process).
sing unit) 58 and RAM (Rand-om Access Memory)
59 and a ROM (Read Only Memory) 60.

The CPU 58 outputs various control signals for controlling each unit in the apparatus main body 2 and the modem pack 3 to each circuit via the bus B and executes a communication control program according to the type of communication line to be connected. Further, when the CPU 58 receives the image data and the audio data multiplexed and transmitted from the image transmission device (videophone device) of the other party, the CPU 58 demodulates them by the modulation / demodulation circuit 8 and inputs them. , The demodulated image data and audio data are separated, the compressed image data is output to the image compression / expansion circuit 49 in the image processing circuit 10 via the bus B, and the compressed audio data is output via the bus B. Voice processing circuit 1
It is output to the voice compression / expansion circuit 55 in the No. 1 unit.

Further, the CPU 58 outputs the compressed image data output from the image compression / expansion circuit 49 to the bus B via the buffer memory 40 and the audio compression / expansion circuit 55 to the bus B via the buffer memory 56. The compressed audio data is multiplexed and synthesized, and is output to the modulation / demodulation circuit 8 via the bus B as image data and audio data.

The RAM 59 is a semiconductor memory that stores program data used in the program processing executed by the CPU 58, compressed image data, audio data, and the like.

The ROM 60 is a semiconductor memory that stores programs and data used in the television apparatus 1.

The bus B is a common signal path for connecting the modulation / demodulation circuit 8, the image processing circuit 10, the audio processing circuit 11, the key operation unit 12, and the control circuit 13, and is an address bus for instructing an address. And a data bus for transferring data.

In the above structure, the liquid crystal display device is generally very thin and easy to be made small and lightweight as compared with the image display means such as CRT, and the active matrix type LCD is simple. Matrix type LCD
Compared with, it is possible to control fine halftones, secure a high contrast ratio, and have a high response speed. Therefore, it is an effective device in the field where high-quality and multi-tone color display is required. Yes, especially,
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.

In the present embodiment, in order to further utilize the excellent advantages of this liquid crystal display device, as described below,
We are also working to reduce the size of the backlight.

FIG. 6 is an exploded perspective view of the LCD 44.

In FIG. 6, the LCD 44 comprises a front shield case 61, a liquid crystal display unit 62, and a rear shield case 63.

As shown in FIG. 6, the front shield case 61 has a screen display opening portion 64, and insulating tapes 65 and 66 are adhered to the back surface of the front shield case 61.

The liquid crystal display unit 62 includes a scan driver circuit 67, a data driver circuit 68, and a liquid crystal panel 69.
And formed by TAB (Tape Automated Bonding). Reference numeral 70 denotes a flexible substrate on which signal lines for outputting necessary signals to the scan driver circuit 67 and the data driver circuit 68 are wired.

The scan driver circuit 67 drives a scan bus (not shown) in the liquid crystal panel 69, controls on / off of the TFTs for one line in the scanning direction, and controls the voltage of the data bus (not shown). The voltage is applied to the liquid crystal cell for a required period at a predetermined timing.

The data driver circuit 68 drives the data bus of the liquid crystal panel 69 based on the input of image data.

The liquid crystal panel 69 is a TFT type liquid crystal display panel which is one of the active matrix systems, and is, for example, 22 output from the image compression / expansion circuit 49 and D / A converted by the DAC 53 via the video memory 52.
An analog video signal of 0x279 pixels and a predetermined number of bits is D
D33 outputs it as an analog RGB signal of 220 × 279 pixels with a predetermined number of bits, and displays an image on the display surface of the LCD 44 of 220 × 279 pixels.

As shown in FIG. 6, the back shield case 63 has a backlight opening 71 formed therein and is fixed to the liquid crystal display unit 62 by double-sided tapes 72, 73 and 74.

FIG. 7 is an exploded perspective view of the flat fluorescent tube 75.

The flat type fluorescent tube 75, as shown in FIG.
A hollow cathode structure in which argon (Ar) gas and mercury (Hg) are enclosed in a container composed of a front glass panel 76, a rear glass panel 77, and a frame glass 78, and which has a U-shaped or V-shaped cross section (not shown). A pair of discharge electrodes on the left and right are arranged opposite to each other, and a phosphor is applied to the inner surfaces of the front glass panel 76 and the rear glass panel 77 by screen printing. Then, lead pieces 79 and 80 extending downward corresponding to the left and right discharge electrodes are provided. In addition, 81 is an exhaust pipe and 82 is a fluorescent screen.

The flat fluorescent tube 75 is the same as the LCD 44.
Is laminated on the back surface of the
Light is evenly applied to the backlight opening 71 from the entire surface of 2.

A transparent thin resin sheet 83 is attached to the front glass panel 76 with double-sided tapes 84 and 85 with a slight gap kept between the transparent resin sheet 83 and the fluorescent surface 82. The resin sheet 83 is formed by blending polyethylene terephthalate (PET) with an ultraviolet blocking agent, and is formed of a material having excellent heat resistance and an ultraviolet blocking function. In this case, the ultraviolet blocking agent may be applied instead of being compounded.

A shield case 86 is provided on the back surface of the flat fluorescent tube 75.
Is to block the electromagnetic waves generated from the flat fluorescent tube 75 and prevent adverse effects on peripheral circuits. 8
7 is a spacer, 88 is a substrate, 89 is a lead wire, and 90 is a connector.

Then, the shield case 86 and the rear glass panel 77 are fixed to each other with double-sided tapes 91 and 92, and as shown in FIG. 7, a flat fluorescent tube 75 to which an insulating tape 93 is attached is attached.

A board 88 is disposed below the shield case 86 via a spacer 87, and lead pieces 79 and 80 and a lead wire 89 are soldered to the board 88 to connect the board 88 and the lead wire 89. And the lead wire 89 is connected to the connector 90.

That is, the spacer 87 is sandwiched between the shield case 86 and the substrate 88, serves as a receiver when the substrate 88 is adhered and attached by the double-sided tape 94, and when the flat fluorescent tube 75 emits light. Light leakage is prevented, and an absolute distance between the shield case 86 and the substrate 88 with respect to high voltage is secured.

As described above, the liquid crystal display unit 62
Flat fluorescent tube 7 in a state of being extremely close to the back side position of
A configuration in which 5 are arranged is adopted. That is, the shield case 86 of the flat fluorescent tube 75 is closely attached to the rear surface position of the rear shield case 63 of the liquid crystal display unit 62.

Here, since a high voltage is required to cause the flat fluorescent tube 75 to emit light, the flat fluorescent tube 7 is required.
The lead pieces 79 and 80 of No. 5 and the substrate 88 connecting them are in the high voltage region. Then, when the lead pieces 79, 80 and the substrate 88 of the flat fluorescent tube 75 and the rear surface shield case 63 of the liquid crystal display unit 62 come close to each other, a discharge occurs due to a high potential difference, a current flows, and the inside of the liquid crystal display unit 62 is destroyed. there is a possibility.

Therefore, the resin sheet 83 covering the fluorescent surface 82 and the lead pieces 79 and 80 is provided on the front surface of the flat fluorescent tube 75.
Since the lead pieces 79, 80 are touched by the hand, the lead pieces 79, 80 and the substrate 88 and the liquid crystal display unit 62 are provided.
The rear shield case 63 can be insulated so as not to cause air discharge (leakage).

Further, since the flat fluorescent tube 75 emits ultraviolet rays, if it is used as a backlight as it is, the liquid crystal is deteriorated by the ultraviolet rays. However, since the resin sheet 83 contains an ultraviolet blocking agent, the liquid crystal is protected. can do.

In addition, the flat fluorescent tube 75 uses a resin sheet 83 having excellent heat resistance because the electric characteristics of the flat fluorescent tube 75 increase the stability of light emission as the fluorescent tube surface has a more uniform temperature distribution. By sticking the resin sheet 83 and the fluorescent screen 82 with a slight gap therebetween, a small space is set between the resin sheet 83 and the fluorescent screen 82, and the heat is dissipated from the fluorescent tube to use the air. It has a heat retention function to warm the layers.

Furthermore, when the fluorescent surface 82 of the flat fluorescent tube 75 is scratched at the time of assembly at the factory, diffuse reflection occurs due to the scratch, and the scratch appears as a shadow on the liquid crystal screen. 83 prevents damage in the process.

Next, the operation of this embodiment will be described.

First, the operation of the control circuit 13 shown in FIG. 4 will be described with reference to the flowcharts of FIGS. 8 and 9. The program corresponding to the processing operation of the CPU 58 in the control circuit 13 is the ROM in the control circuit 13 as well.
It is stored in 60.

The television device 1 in this embodiment is
When the television device 1 is in the power-off state, the modem pack 3
The LINE side input / output terminal 25 and the TEL side input / output terminal 26 are connected in a through state, and the voice signal of the telephone is transmitted from the TEL side input / output terminal 26 through the LINE side input / output terminal 25 to the analog telephone general subscriber line. On the other hand, a voice signal input from the analog telephone general subscriber line is output from the LINE side input / output terminal 25 to TEL.
It is directly input to the telephone through the side input / output terminal 26.

When the television device 1 is in the power-on state, the LINE side input / output terminal 25 in the modem pack 3
And the TEL-side input / output terminal 26 are not connected.

FIG. 8 is a flow chart for explaining the processing operation of the CPU 58.

First, after the power of the television apparatus 1 is turned on, initialization such as initialization of the control circuit 13 and clearing of each memory are performed (step S1), and it is checked whether there is an input from the key operation unit 12. In order to do so, a key scan is performed (step S2), and when there is a key input, a necessary process described later is executed according to the key operation.

Next, the reception flag is once turned off (= "0").
The line voltage level of the NCU 47 is monitored (step S3), and in this state, 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 47 is monitored again, and the communication is now in progress. It is determined whether or not (step S6).

If it is determined that the communication is not in progress, it is determined whether or not the video on / off switch 36 has been pressed. If not, the process is repeated from step S2 (step S7). ).

On the other hand, in the processing of step S6,
If it is determined that the call is in progress, then it is checked whether the reception flag is on (step S
8) If the reception flag is off (= “0”), the display screen (L) of the liquid crystal display unit 5 (L) is displayed as in the case where the video on / off switch 36 is pressed in the process of step S7.
The CD 44) is initialized (step S9).

When the initial setting of the LCD 44 is completed, the image data stored in the video memory 51 is read by the image compression / expansion circuit 49 and output to the video memory 52 as it is, so that the image is transferred from the video memory 51 to the video memory 52. Data is moved (step S1)
0).

Next, a key scan is performed to check whether there is an input from the key operation unit 12 (step S11), and it is determined whether or not the video on / off switch 36 is pressed (step S11). S1
2) By monitoring the line voltage level of the NCU 47, it is determined whether or not the call is currently in progress (step S13).

Here, in the judgment processing of the above steps S12 and S13, the video on / off switch 3
If 6 is not pressed and a call is in progress, the process is repeated from step S10. Further, in the determination processing of steps S12 and S13,
The video on / off switch 36 is not pressed, and
If no call is being made, the screen displayed on the LCD 44 of the liquid crystal display unit 5 is erased (step S14), and the process is repeated from step S2. Further, in the determination process of step S12, if the video on / off switch 36 is pressed, it is determined whether or not the call is currently in progress (step S15). The process is executed again from step S2. On the other hand, if a call is in progress, the process proceeds to the process shown in FIG.

If the reception flag is on (= "1") in the process of step S8, a key scan is performed to check whether there is an input from the key operation unit 12 (step S16). ), It is determined whether or not the video on / off switch 36 has been pressed (step S17), and it is determined whether or not the telephone call is currently in progress (step S18).

Here, in the determination processing of steps S17 and S18, the video on / off switch 3
If 6 is not pressed and the call is in progress, the processing from step S16 is executed again, and in the determination processing of steps S17 and S18,
The video on / off switch 36 is not pressed, and
If the call is not in progress, the process is repeated from step S14 and step S2, while the above step S14 is performed.
In the determination processing of 17, the video on / off switch 36
If is pressed, the process proceeds to the process shown in FIG. 9 described later.

FIG. 9 is a flow chart for explaining the processing operation of the CPU 58 following FIG.

If a call is being made in the determination process of step S15, or if the video on / off switch 36 is pressed in the determination process of step S17, the negotiation process is performed (step S21), and the liquid crystal display is displayed. The screen of the unit 5 is initialized (step S22).

Next, based on the control signal from the CPU 58, the image processing circuit 10 performs the compression / expansion processing of the image data (step S23), and the audio processing circuit 11 performs the compression / expansion processing of the audio data. (Step S34), data is transmitted / received by the communication process (step S35).

Then, a key scan is performed to check whether or not there is an input from the key operation unit 12 (step S36), and it is determined whether or not the telephone call is currently in progress (step S37).

If a call is in progress, the above step S2 is performed.
When the process from step 3 is executed again and the call is not in progress, FIG.
The processing is executed again from the processing of steps S14 and S2 described above.

The image data compression / expansion processing in step S23, the audio data compression / expansion processing in step S34, and the data communication processing in step S35 will be described below. Since the television device 1 of the present embodiment simultaneously executes the image data processing and the audio data processing in parallel in the transmission processing and the reception processing, the transmission processing and the reception processing will be separately described below. .

(Transmission Processing) The image data taken by the camera unit 4 is A / D converted by the ADC 50,
Image data corresponding to one screen output from the ADC 50 in response to a trigger signal from the CPU 58 is stored in the video memory 5
Taken in 1. The image data captured in the video memory 51 is compressed by the image compression / expansion circuit 49 and temporarily stored in the buffer memory 48. Then, the image data stored in the buffer memory 48 in a compressed state is sequentially read based on a control signal from the CPU 58.

When it is desired to record a self-portrait (transmission image) displayed on the LCD 44 during a call, the operator depresses the image capturing switch 38,
The image data stored in the buffer memory 48 is the RAM 5
9 is stored.

In this case, since the data amount of the 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 is stored in the RAM 59. Storage area is about 1
8 kilobytes is enough.

On the other hand, the voice data input from the microphone unit 6 is A / D converted by the ADC 54 via the NCU 47, compressed by the voice compression / expansion circuit 55, and temporarily stored in the buffer memory 56. It Then, the audio data stored in the buffer memory 56 in a compressed state is sequentially read based on a control signal from the CPU 58.

The CPU 58 sequentially reads the compressed image data and audio data from the buffer memory 48 and the buffer memory 56, synthesizes the image data and audio data, and outputs them to the modem 46. Then, the input compressed data is modulated by the modem 46, and D in the modem 46
After D / A conversion by SP (Digital Signal Proceser), NCU 47 to LINE side input / output terminal 25
Is output to the analog telephone general subscriber line via.

(Reception Processing) The compressed image data and audio data are transmitted from the analog telephone general subscriber line to LINE.
It is input to the modem 46 via the side input / output terminal 25 and the NUC 47. The compressed data demodulated by the modem 46 is A / D converted by the DSP in the modem 46 and then output to the bus B, and the CPU 58 passes through the bus B.
Are sequentially transferred to.

The CPU 58 separates the combined data into image data and audio data, the compressed image data is temporarily stored in the buffer memory 48, and the compressed audio data is temporarily stored in the buffer memory 56.

Next, the image compression / decompression circuit 49 sequentially reads the written image compressed data from the buffer memory 48, decompresses it, and writes it in the video memory 52.

Here, when it is desired to record the partner image (received image) displayed on the LCD 44 during a call, the image data stored in the buffer memory 48 is depressed by the operator pressing the image capture switch 38. Is RA
It is stored in M59.

In this case, as described in the above transmission processing, the data amount of the compressed image data for one screen is about 3.
Since it is 5.8 kilobytes, if the image data storage area of the RAM 59 is 356 kilobytes, about 10
Since 10 screens can be stored, the storage area for 10 screens can be stored in, for example, 3 screens for storing image data for transmission.
The image data for reception can be divided into seven screens and used.

On the other hand, the voice compression / decompression circuit 55 sequentially reads the written voice compression data from the buffer memory 56, decompresses it, and outputs it to the DAC 57 at a constant rate. Then, the expanded analog audio data can be heard from an earphone (not shown) connected to the in-phone terminal 35.

The above transmission / reception processing is repeatedly executed until the call (image and voice data communication) is completed.

The transmission operation and the reception operation will be described below with reference to FIGS. 10 and 11. In FIGS. 10 and 11, on-hook means a stopped state of the call, off-hook means a started state of the call, and “during a call” means that there is a response from the other party after dialing and the conversation is established. State.

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

FIG. 10 is a transition diagram of communication states during transmission.

In the on-hook state, when the image display of the LCD 44 in the liquid crystal display unit 5 is turned off, the image on / off switch 36 is pressed once ((a) in FIG. 10).
Then, the LCD 44 is brought into a display state, and the camera input image of the user's television device 1 is displayed on the LCD 44 as a monitor. In this state, when the video on / off switch 36 is pressed again (see (b) in FIG. 10), the LCD display disappears and the original state is restored.

When the receiver is lifted from the on-hook state (see (c) in FIG. 10), the state shifts to the off-hook state.

In the off-hook state, when the image display of the LDC 35 on the liquid crystal display unit 5 is turned off, the image on / off switch 36 is pressed once (see (d) in FIG. 10), and the LCD 44 is in the display state. As in the case of the on-hook state described above, the camera input image of the television device 1 on the self side is displayed on the LCD 44 as a monitor. In this state, when the video on / off switch 36 is pressed again (see (e) in FIG. 10), the LCD monitor display disappears and the original off-hook state is restored.

In the on-hook and off-hook states, the monitor display is displayed on the LCD 44 (see FIG. 1).
0, the on-hook and off-hook triple lines are drawn) and the handset is raised and lowered ((f) in FIG. 10).
), The state changes from on-hook to off-hook, or from off-hook to on-hook.
There is no change in the monitor display of.

Next, irrespective of whether the LCD 44 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 ((g), (in FIG. 10). (See h)), the state shifts to the talking state, and the LCD 44 becomes the monitor display on its own side. In this state, when the other party hangs up the telephone (see (i) in FIG. 10), the state shifts to the off-hook state, and the monitor display on the LCD 44 also disappears. Further, even when the user hangs up the call during the call (see (j) in FIG. 10), the state shifts to the on-hook state and the monitor display on the LCD 44 disappears.

When the video on / off switch 36 is pressed while the LCD 44 is displaying the monitor on the own side during a call (see (k) in FIG. 10), the negotiation of the communication with the other terminal is started. To be done. As a result, if it is determined that the other terminal and the own terminal cannot communicate with each other (see (l) in FIG. 10), the state before the video on / off switch 36 is pressed is returned to the other terminal. When mutual communication with the own terminal is possible, the videophone section is established ((m) in FIG. 10).
After that, mutual communication between the image data and the audio data is performed.

In this state, no matter how many times the video on / off switch 36 is pressed, it is ignored (see (n) in FIG. 10). In this state, if the other party hangs up (Fig. 10
(See (o) in the figure), transition to the off-hook state, and
The monitor display of 44 also disappears. Further, even if the receiver puts the handset (see (p) in FIG. 10), the state shifts to the on-hook state, and the monitor display on the LCD 44 disappears.

When the receiver is put on when the monitor display of the LCD 44 is off in the off-hook state, the state shifts to the on-hook state (see (q) in FIG. 10).

Next, the receiving operation will be described with reference to FIG. Note that the description of the items described in the above description of the transmission operation will be omitted.

FIG. 11 is a transition diagram of communication states at the time of reception. Incidentally, the period shown by the zigzag line in FIG. 11 shows the ringer tone, that is, the time during which the ringing tone is sounding.

During the ringer tone interval (see (r) in FIG. 11), the handset is lifted to respond (FIG. 11).
(See (s) in the middle), but the state shifts to the talking state, but at this time, unlike the transmitting side, the LCD 44 does not display the monitor and remains in the disappeared state. However, when the video on / off switch 36 is pressed once in the on-hook state (see (t) in FIG. 11), the LCD 44 enters the monitor display state, and the self side can be monitored. At this time, a ringer tone is generated (see (u) in FIG. 11), and when the ringer tone is responded to (see (v) in FIG. 11), a call is in progress and the LCD 44 remains on the monitor display. .
By the way, the video on / off switch 36 is effective even in the on-hook state and within the section of the ringer tone.

As described above, in the present embodiment, the image data and audio data compressed by the modulation / demodulation circuit 8 are simultaneously transmitted, and the data compression rate (about 7/100) in the image compression / decompression circuit 49 is transmitted. ) And the image data transmission speed (4800 bps) of the modulation / demodulation circuit 8 and the image data for one screen (21200 bits) displayed by the LCD 44 is divided into three parts for transmission, and analog telephones are generally used. High-quality images are transmitted on the subscriber line. That is, since the screen size of the LCD 44 is 1.4 inches and one screen has data of 110 × 160 pixels × 12 bits (4096 colors) = 211200 bits, image data is transmitted at a rate of 1 frame in 3 seconds. However, the time for transmitting the image data for one screen is changed as the number of pixels and the number of colors (the number of gradations) of one screen are increased or decreased as the screen size is changed.

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 = It becomes 381600 bits (about 34.4 kilobytes), which is 1 when the data is compressed to about 68/1000 by the image compression process.
It is image data of 9200 bits, and this 19200 bits is divided by the number of bits (4800 bits) that can be transmitted in 1 second (that is, 19200/4800 = 4 seconds).
Intermittent still images are transmitted at a rate of one frame. That is, in this case, image data of 70400 bits (about 8.6 kilobytes) obtained by dividing 381600 bits by 4 is compressed to about 68/1000, and as shown in FIG. 5, a video including image data of 4800 bits. It is a code.

Thus, in this embodiment, the television device 1
However, it is possible to call while looking at the other party's face and to realize high-quality image transmission.

Further, in the conventional apparatus, in order to record the image to be transmitted, another recording apparatus (for example, an audio cassette tape recorder) was required for recording, but in the present embodiment, When a large-capacity RAM 59 is mounted and an image taken by the camera unit 4 is desired to be recorded, a desired image can be easily saved by pressing the image capture switch 38. In this case, instead of the RAM 59, as shown in FIG. 12, a memory card 94 composed of a non-volatile flash memory or the like may be used, and the image to be transmitted is stored in the memory card 94, and By exchanging 94, a plurality of images can be stored. In addition, in FIG. 12, 95 is
This is a memory slot in which the memory card 94 is mounted.

In this case, the memory card 94 storing a plurality of image data is mounted on the video printer 96 as shown in FIG.
The image data stored in 4 can be printed out.

FIG. 13 is an external view showing an example of the video printer 96. In FIG. 13, 97 is a slot for mounting the memory card 94, 98 is a power switch, 99 is various operation switches, and this video printer 96 is
256 bits each for R, G, and B, which are the three primary colors
It is a sublimation type thermal transfer color printer that outputs gradation (16,770,000 colors).

Specifically, first, after mounting the memory card 94 in the slot 97 of the video printer 96, the power switch 98 is turned on and various operation switches 99 are turned on.
Is operated to select any image data stored in the memory card 94, and the selected image data is
It is printed out on 6-size dedicated paper.

Further, in the conventional videophone device, generally, it is made on the assumption that it is a stationary type, and once it is installed, it cannot be moved to another place for use, so that compressed data is transmitted. 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 the small flat fluorescent tube 75 is used for the backlight used in the liquid crystal display device,
The LCD 44 portion can be made thinner, and the size and weight can be greatly reduced.

In the conventional videophone device, the camera section is fixed to the main body of the device, so that the image capturing range is limited. However, the TV device 1 of the present embodiment is as shown in FIG. A camera unit 4 is detachably provided from the device body 2, and the device body 2 and the camera unit 4 are connected to each other by a video cable 4a.
The camera unit 4 can be separated from the apparatus main body 2 during the image transmission process, since the images are connected to each other, and regardless of the arrangement position of the apparatus main body 2, the operator can freely photograph (capture an image). You can

Furthermore, by providing a composite video input / output terminal, an analog / digital RGB input / output terminal, etc. as the video input terminal T1 and the video output terminal T2 provided in the liquid crystal display unit 5, the video cassette recorder (V
It is also possible to connect to a video device including a CR) or a laser disc player (LDP), a computer, or the like. For example, by connecting a video cassette recorder or the like having a video output terminal, a video image is displayed on the liquid crystal display unit 5. It is also possible to display.

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 Differenti-
al Palse Code Modulation) method, VSELP (Vector
A Sum Excited Linear P-rediction) method or the like may be used.

[0153]

According to the present invention, in the invention described in claim 1, the camera unit and the microphone unit are integrally provided in the housing having the display unit, and the image data captured by the camera unit is provided. And a transmission / reception block that transmits / receives the audio data captured by the microphone unit via the communication line to the housing so that the transmission / reception block can be detachably attached to the image data and the audio data of the television device via the communication line. Transmission and reception can be performed, and the liquid crystal display portion of the television device can be effectively used.

In this case, as in the invention described in claim 2,
By using a modulation / demodulation circuit with an input / output terminal for a communication line as a transmission / reception block, image data and voice data can be transmitted / received using a communication line such as an analog telephone general subscriber line. You can

[Brief description of drawings]

FIG. 1 is an external view showing a television device of the present invention.

FIG. 2 is a diagram showing a state in which a camera unit of FIG. 1 is removed.

FIG. 3 is a perspective view of the television device according to the present invention as seen from the back side.

FIG. 4 is a block diagram showing a schematic configuration of the television device of FIG.

FIG. 5 is a diagram showing the structure of one frame of a multiplexed code.

FIG. 6 is an exploded perspective view of an LCD.

FIG. 7 is an exploded perspective view of a flat fluorescent tube.

FIG. 8 is a flowchart showing a control operation of a control unit.

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

FIG. 10 is a transition diagram of communication states during transmission.

FIG. 11 is a communication state transition diagram at the time of reception.

FIG. 12 is a perspective view of a television device according to another embodiment.

FIG. 13 is an external view showing an example of a video printer.

[Explanation of symbols]

 1 TV device 2 Device body 3 Modem pack 4 Camera part 4a Video cable 5 Liquid crystal display part 6 Microphone part 6a Microphone hole 7 Power supply part 8 Modulation / demodulation circuit 9 TV tuner 10 Image processing circuit 11 Voice processing circuit 12 Key operation part 13 Control Circuits 21a, 21b Engaging claws 22a, 22b Engaging recesses 23 Electrodes 24 Connectors 25 LINE side input / output terminals 26 TEL side input / output terminals 27 RS-232C terminals 28 Indicators 29 Dip switches 31 Power switches 32 Power indicators 33 Tuning buttons 34 Volume Dial 35 Earphone terminal 36 Video on / off switch 37 Video switching switch 38 Image capture switch 41 Lens 42 CCD 43 DD 44 LCD 45 Buffer memory 46 Modem 47 NCU 48 Buffer Memory 49 Image compression / expansion circuit 50 ADC 51 Video memory 52 Video memory 53 DAC 54 ADC 55 Audio compression / expansion circuit 56 Buffer memory 57 DAC 58 CPU 59 RAM 60 ROM 61 Front shield case 62 Liquid crystal display unit 63 Rear shield case 64 screen Display opening 65 Insulating tape 66 Insulating tape 67 Scan driver circuit 68 Data driver circuit 69 Liquid crystal panel 70 Flexible substrate 71 Backlight opening 72 Double-sided tape 73 Double-sided tape 74 Double-sided tape 75 Flat fluorescent tube 76 Front glass panel 77 Rear Glass panel 78 Frame glass 79,80 Lead piece 81 Exhaust pipe 82 Fluorescent surface 83 Resin sheet 84,85 Double-sided tape 86 Shield case 87 Spacer 88 Substrate 89 Lee Line 90 connector 91, 92 double-sided tape 93 insulating tapes 94 memory card 95 memory slots 96 video printer 97 Slot 98 power switch 99 various operation switches T1 video input terminal T2 video output terminal T3 image input terminal B bus

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

[Procedure amendment]

[Submission date] March 22, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0103

[Correction method] Change

[Correction content]

If it is determined that the communication is not in progress, it is determined whether or not the video on / off switch 36 has been pressed (step S7). If not, the process is repeated from step S2. It As a result, the loop A is configured in a state where the video on / off switch 36 is not pressed, not in the call state.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0106

[Correction method] Change

[Correction content]

Next, a key scan is performed to check whether there is an input from the key operation unit 12 (step S11), and it is judged whether or not a call is in progress by monitoring the line voltage level of the NCU 47. (Step S12), it is determined whether or not the video on / off switch 36 has been pressed when not in a call (Step S13).

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0107

[Correction method] Change

[Correction content]

If the image on / off switch 36 is not pressed in the determination process of step S13, the process is repeated from step S10. As a result, the loop B in which the video on / off switch 36 is pressed, not in the call state, is formed. Further, in the determination process of step S13, if the video on / off switch 36 is pressed, the screen displayed on the LCD 44 of the liquid crystal display unit 5 is erased (step S14), and the process of step S2 is performed. Will be executed again. On the other hand, if it is determined in the determination process of step S12 that a call is in progress, step S described below will be performed.
The processing moves to 16. That is, when not in a call, by pressing the video on / off switch 36 to turn it on, a video image captured by the camera unit 2 of the portable television receiver 1 can be displayed on the LCD 44 of the liquid crystal display unit 5. Also, in this state, the video on / off switch 3
By pressing 6 to turn off, the LCD of the liquid crystal display unit 5
The display of 44 can be turned off. On the other hand, the above step S
If it is determined that the call is in progress in the determination process of 6, if the reception flag is off (= "0"),
Similar to the processing in step S9, the display screen (LCD 44) of the liquid crystal display unit 5 is initialized (step S15).

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0108

[Correction method] Change

[Correction content]

Then, a key scan is performed to check whether there is an input from the key operation unit 12 (step S16), and it is determined whether or not the call is currently in progress (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, if it is determined in the determination process of step S17 that the telephone call is currently in progress, the video on / off switch 3
It is determined whether 6 has been pressed (step S18).

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0109

[Correction method] Change

[Correction content]

In the determination processing of step S18,
If it is determined that the video on / off switch 36 has not been 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, the above step S
In the determination processing of 18, the video on / off switch 36
If is pressed, the process proceeds to the process shown in FIG. 9 described later.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0111

[Correction method] Change

[Correction content]

When the video on / off switch 36 is pressed in the determination processing of step S18, negotiation processing is performed (step S21), and the screen of the liquid crystal display unit 5 is initialized (step S22).

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0112

[Correction method] Change

[Correction content]

Next, based on the control signal from the CPU 58, the image processing circuit 10 compresses / expands the image data (step S23), and the audio processing circuit 11 compresses / expands the audio data ( In step S24), data is transmitted and received by the communication process (step S25).

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0114

[Correction method] Change

[Correction content]

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 call is not in progress, the processing is repeated from the processing of steps S14 and S2 shown in FIG. That is, when a call is in progress, the video on / off switch 36 can be pressed to transmit and receive the video.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0130

[Correction method] Change

[Correction content]

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

[Procedure Amendment 10]

[Document name to be amended] Statement

[Name of item to be corrected] 0131

[Correction method] Change

[Correction content]

In the on-hook state (loop A) after the power is turned on, when the screen display of the LCD 44 in the liquid crystal display unit 5 is turned off, the video on / off switch 36 is turned on.
When is pressed once (see step S7 in FIG. 8 and (a) in FIG. 10), the LCD 44 enters the display state (loop A).
→ loop B), the camera input image of the television device 1 of the user is displayed on the LCD 44 as a monitor. In this state, when the video on / off switch 36 is pressed again (see step S13 in FIG. 8 and (b) in FIG. 10), the LCD
The display disappears and the original state is restored (loop B → loop A).

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0132

[Correction method] Change

[Correction content]

When the receiver is lifted from the on-hook state (loop A) (see (c) in FIG. 10), the state shifts to the off-hook state.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Name of item to be corrected] 0133

[Correction method] Change

[Correction content]

In the off-hook state (loop A), when the screen display of the LCD 44 in the liquid crystal display unit 5 is turned off, the image on / off switch 36 is pressed once (steps S7 and FIG. 10 in FIG. 8). (D)), LCD4
4 becomes the display state, and the camera input image of the television device 1 on the self side is displayed on the LCD 44 as a monitor, as in the case of the on-hook state described above. In this state, when the image on / off switch 36 is pressed again (see step S13 in FIG. 8 and (e) in FIG. 10), the LCD monitor display disappears and the original off-hook state is restored (loop B).
→ Loop A).

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0135

[Correction method] Change

[Correction content]

Next, irrespective of whether the LCD 44 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 (steps S6, S12 and (G) in FIG.
(See (h)), and the state is changed to the talking state, and the LCD 44 becomes the monitor display on the own side (loop C). In this state, when the other party hangs up the telephone (see step S17 in FIG. 8 and (i) in FIG. 10), the state shifts to the off-hook state and the monitor display on the LCD 44 disappears (loop C → loop A). In addition, even if the user hangs up the call during a call (step S17 in FIG. 8 and (j) in FIG. 10)
(See), the state shifts to the on-hook state, and the monitor display on the LCD 44 disappears.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Name of item to be corrected] 0136

[Correction method] Change

[Correction content]

When the video ON / OFF switch 36 is pressed during the call (loop C) while the LCD 44 is displaying the monitor on its own side (see step S18 in FIG. 8 and (k) in FIG. 10), the other party Communication negotiation is started with the side terminal. As a result, if it is determined that the other terminal and the own terminal cannot communicate with each other (see (l) in FIG. 10), the state before the video on / off switch 36 is pressed is returned to the other terminal. When mutual communication is possible with the own terminal, a videophone section is established (see (m) in FIG. 10), and thereafter, mutual communication between image data and audio data is performed (loop C → loop D).

[Procedure Amendment 15]

[Document name to be amended] Statement

[Name of item to be corrected] 0137

[Correction method] Change

[Correction content]

In this state, no matter how many times the video on / off switch 36 is pressed, it is ignored (see (n) in FIG. 10). In this state (loop D), when the other party hangs up the telephone (see step S27 in FIG. 9 and (o) in FIG. 10), the state shifts to the off-hook state and the monitor display on the LCD 44 disappears (loop D → Loop A). In addition, even if the receiver puts the handset (step S27 in FIG. 9 and FIG.
(See (p) in the middle), transition to the on-hook state, LCD
The monitor display of 44 also disappears (loop D → loop A).

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0141

[Correction method] Change

[Correction content]

During the ringer tone section (loop A) (see (r) in FIG. 11), when the user lifts the handset to respond (see step S6 in FIG. 8 and (s) in FIG. 11), the call is in progress. However, at this time, unlike the transmitting side, the monitor display is not displayed on the LCD 44 and the display is left off (loop A → loop C). However, in the on-hook state (loop A), the video on / off switch 36
When is pressed once (see step S7 in FIG. 8 and (t) in FIG. 11), the LCD 44 enters the monitor display state, and the self side can be monitored (loop A → loop B). At this time, a ringer tone is generated (see (u) in FIG. 11) and responds to this ringer tone (FIG. 8).
At step S12 in the middle and (v) in FIG. 11), the state of talking is entered, and the LCD 44 remains displayed on the monitor. By the way, the video on / off switch 36 is effective even in the on-hook state and within the section of the ringer tone.

[Procedure Amendment 17]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

[Procedure 18]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

[Figure 9]

[Procedure Amendment 19]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

[Figure 10]

[Procedure amendment 20]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

Claims (2)

[Claims] 1. A television device for displaying an image received by a television tuner built in a casing on a display unit provided integrally with the casing, wherein a subject image is displayed on the casing. A camera unit for capturing data and a microphone unit for capturing audio data are integrally provided, and image data captured by the camera unit and audio data captured by the microphone unit are transmitted and received via a communication line. A television device, wherein a transmission / reception block is detachably provided in the housing. 2. The transmission / reception block has an input / output terminal for the communication line, and has a modulation / demodulation circuit for modulating image data and audio data to be transmitted and demodulating received image data and audio data. The television device according to claim 1, wherein: