JPH04132482A - Television telephone set - Google Patents

Abstract

PURPOSE:To facilitate the storage of lots of sets of information and the retrieval of the information extremely by compressing picture information and audio information, storing the compressed information and reproducing optionally the stored information. CONSTITUTION:The telephone set is provided with coding means 8,15 applying compression coding to a picture signal from an internal camera and an external device and an audio signal from a handset and an external device, and reception opposite party picture information subject to compression coding, audio information, its own picture and an external picture, audio information subject to compression coding, and character and graphic information are stored in a storage device 18 while being compressed. In the call and reproduction mode, the stored information such as picture information, audio information and character and graphic information is optionally reproduced in response to the mode designation from an operation section 11 and decoded simultaneously and displayed on a display section 6. Thus, the picture information, audio information and character and graphic information are simultaneously displayed and outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a television radio R8 device used by being connected to a digital line having a plurality of information channels and a control signal channel, and in particular, relates to a television radio R8 device that is used by being connected to a digital line having a plurality of information channels and a control signal channel, and in particular, This invention relates to a videophone device that can simultaneously display and display audio information, graphic information, etc.

[Prior Art] Some conventional videophone devices are capable of restoring the other party's image information to a video signal, then recording it on a recording/reproducing device and reproducing it later.

At that time, a recording device such as a VTR is often used to record image information, audio information, and the like.

[Problems to be Solved by the Invention] Such videophone devices not only require a large amount of information media for recording, but also require a method that allows the recorded information to be easily retrieved when it is stored and later played back. In order to do this, there was no way to create a label on the recording medium, attach it, and visually search for it.

Therefore, if you want to keep track of when, by whom, what type of iI@ was sent, for example, you will need to create a label each time, and when searching for it, it will not be easy to find it. However, it is very complicated.

In addition, if you want to transmit multiple videos to the other party, you need to transmit all of these videos separately, which saves time, effort, and
Communication costs are high.

On the other hand, images and sounds are used as information to be transmitted to the other party.

Examples include text, but images and sounds are temporary and contain a lot of redundant information, resulting in a large amount of information, so a large-capacity recording medium is required.

Therefore, this invention solves these conventional problems with a simple structure, and is capable of compressing and recording image information, audio information, text information, graphic information, etc., and also combining these information arbitrarily. This paper proposes a videophone device that can simultaneously display and transmit multiple images on the screen.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention uses a plurality of information channels! In a videophone device used connected to a digital line having a signal channel for control, an encoding means for compressing and encoding an image signal from an internal camera or an external source, and an audio signal from a handset or an external device; means for transmitting the encoded fSj image information and audio information to a digital line; means for receiving the compression-encoded iI image information and audio information from the digital line; A decoding means for decoding, a means for projecting an analogized image signal, a means for outputting an analogized audio signal, and a memory for storing at least the compression-encoded II image information and audio information. and a control means for controlling storage and reading of the compressed and encoded image information and audio information in the storage means, each having a plurality of information channels and a signal channel for control. .

[Function] Compression-encoded image information, audio information,
Self-portraits, external images, compression-encoded audio information, and character/graphic information are stored in the storage device 8 in a compressed state.

During call reproduction, stored image information, audio information, text, graphic information, etc. are arbitrarily reproduced according to the mode designation from the operation section 11, and these are simultaneously restored and displayed on the display section 6.

This allows multiple simultaneous displays to function as a list.

It is possible to arbitrarily select and send one of these plurality of displayed images, or it is also possible to transmit the plurality of displayed images to the other party again as compressed information.

[Example] Next, an example of a television packing apparatus according to the present invention will be described in detail with reference to FIGS. 1 and 2.

In FIG. 1, 1 is a line interface section, to which is connected a Digimol circuit w30 having a plurality of information channels B1 and B2 and a control signal channel D.
The information channel and the control channel are demultiplexed. In other words, the information is Digimol times! When output to the i30, multiple processing is performed, and when input from the digital line 30, separation processing is performed at t1.

The information taken in by the line interface section 1 and the information generated internally are sent to the system control sections' and 2, and separated into audio information, image information, text information, graphic information, etc.

The system control unit 2 controls all functional units described below.
- and analyzes the captured information and internally generated information to appropriately control each functional unit.

The compressed and encoded image information is sent to the decoding section 3, where decoding and decompression processing is performed.

Decoding The decompressed and restored image signal is sent to 2 image processing units 4
The image is then stored in the image storage unit (RAM, etc.) 5. When the image signals for one screen have been collected, the image processing section 4 sends the image signals to the display section 6 where they are displayed (7) or outputted to the outside from the video output terminal 20 via the switch 24.

As the display section 6, a CRT, a liquid crystal display element, or the like is used.

The human input ii image from the internal camera 7 or the input 1Iia from the external video input terminal 21 is selected by the switch 25, and then passes through the image processing section 4 and is once input to W.
The image is taken into the i-image storage section 5. The image is then supplied to the display section 6 through the iii image processing section 4 again to be displayed, and is also sent to the C1 encoding section 8.

The encoding unit 8 compresses and encodes the image information and sends it to the system control unit 2.

On the other hand, the audio signal separated by the system control unit 2 is decoded and expanded by the audio decoding unit 16, converted into an analog signal by the audio processing unit 14, and subjected to appropriate signal processing. The switch 26 outputs the signal to the handset 13 or the audio output terminal 22.

Either the audio signal input to the handset 13 or the audio signal input from the external audio input terminal 23 is selected by the switch 27, and the selected audio signal is digitized by the audio processing unit 14 to convert the audio signal into a voice signal. Encoding unit 15
After being compressed and encoded, it is sent to the system control unit 2.

The encoded character/graphic information is developed by the character information processing unit 9 into a character/graphic pattern stored in the character/graphic storage unit 10.

Revenge, ii! The image signal is superimposed on the image signal by the jm processing section 4 and supplied to the display section 6, and in this case, the image and characters or figures are displayed at the same time.

When character information is input from the operation section 11, it is converted into a character code by the character information processing section 9 via the operation interface section 12, and the character information is developed into a pattern using the character/graphic storage section 10. Then, in the same manner as described above, the image signal is superimposed on the image signal by the image processing section 4, and then supplied to the display section 6, where these signals are simultaneously displayed in the 1. ．． 7 is displayed and also supplied to the system control unit 2.

Image information captured or processed in this way,
Among voice information, text information, or graphic information, Rikinin 1E,
The information is supplied from the system control unit 2 to the line interface unit 1 and multiplexed on the digital line 3.
Sent to the 0 side.

- Above 1. Switches 24 to 27 for switching between internal and external image information and audio information are all controlled by the system control section 2.

The system control unit 2 also outputs call information to the call control unit 19, and inputs information from the operation unit 11 (such as input of telephone number) to the system control unit 2 through the operation interface unit 12. Each processing unit is controlled to perform processing based on the input information.

Reference numeral 17 denotes an interface section for inputting and outputting compressed images, audio information, character information, graphic information, etc. to a storage device ff118.

Large capacity storage unit used in this invention! As 18, a storage medium such as a floppy disk, hard disk, or optical disk, which is small, has a large storage capacity, and is easy to search for information, can be used. ), the received compressed image information, compressed audio information, text information, graphic information, image signals from the built-in camera 7 and external video input terminal 21, and the handset 13,
Audio information obtained by compressing the audio signal from the external audio terminal 23, as well as character information or graphic information created internally, are stored in the storage device 18.

When reading the information stored in the storage device f18, first select the playback switch (reed switch, which is also not transmitted orally) from the operation unit 11. At the same time, selection is made between iI image information, character information (or graphic information), or both.

At this time, when displaying multiple images at the same time, select the operation key corresponding to multiple display, and then select the information you want to reproduce. Then, all the compressed image information decoded and expanded by the image decoding unit 3 can be displayed simultaneously on one screen.
In the J image processing section 4, a plurality of IIL image information, character information, graphic information, etc. are thinned out (compressed) and changed to a size that allows a plurality of images to be displayed on one screen. This reduced screen display enables list display.

FIG. 2 shows a display example when a plurality of images are displayed simultaneously.

The figure shows an example in which one screen is divided into nine parts and displayed simultaneously. Figure a is an example in which images and text are displayed simultaneously, and figure 3 is an example in which only images are displayed. , C in the same figure is an example in which only characters are displayed. Of course, it is also possible to add graphic information to these and display them.

When transmitting information, a plurality of images are displayed on the screen, or the operator selects one reduced image from among the plurality of images displayed. Then, the image information output from the image processing section 4 under the control of the system control section 2 is sent to the image encoding section 8, where it is compressed and encoded, and then transmitted information from the system control section 2 to the line interface section 1. will be sent.

With this, even if multiple images are being sent, each image can be sent repeatedly. Since this is no longer necessary, line usage time is reduced.

Character and graphic information is input from the character information processing section 9 to the line interface section 1 from the system control section 2 as code information. The audio information passes through the audio processing section 14 and is similarly input to the line interface section 1 as 1M encoded information in the audio encoding section 115, where it is multiplexed and sent out to the digital line 30.

[Effects of the Invention] As described above, according to the present invention, it is possible to store compressed image information of the receiving party, audio information, self-portrait, audio, and compressed information of external input, and to play back the stored information arbitrarily. This is what I did.

According to this, since compressed information is stored, it has the characteristic of being able to store a large amount of information.

Also, when playing back, you can select any information such as images, text, and graphics and display it on one side at the same time, so if you use this electrical property, you can label each piece of information. It is possible to search for stored information without having to perform the above operations, and the stored information can be searched randomly, so it is extremely easy to search for information.

[Brief explanation of the drawing]

FIG. 1 is a system diagram showing an example of a television packing apparatus according to the present invention, and FIG. 2 is a diagram showing an example of a screen display.・Line interface section System control section Image decoding section ・ii Image processing section i! i Image storage section Display section Internal camera Image encoding section Character information processing section Character/graphic storage section Operation section Handset/receiver Audio processing section Audio encoding section Audio decoding section Mass storage section

Claims (3)

[Claims] (1) In a videophone device used connected to a digital line that has multiple information channels and control signal channels, image signals from the internal camera and external sources and audio signals from the handset and external sources are compressed and encoded. means for transmitting the compression-encoded image information and audio information to a digital line; means for receiving the compression-encoded image information and audio information from the digital line; a decoding means for decoding the image information and audio information; a means for projecting the analogized image signal; a means for outputting the analogized audio signal; 1. A video telephone apparatus comprising: a storage means for storing information; and a control means for controlling storage and reading of the compressed and encoded image information and audio information in the storage means. (2) The video telephone device according to claim 1, wherein the image signal from the outside includes text/graphic information, and the text/graphic information is stored in the storage means. (3) When recalling and reproducing image, audio, character/graphic information stored in the storage means, displaying a plurality of image, character/graphic information independently on the display screen of the projection means; 3. The video telephone device according to claim 1, further comprising a function of arbitrarily calling and reproducing a list of calls.