JPH04109742A - Mutual converter for digital tv telephone message/ analog still picture tv telephone message - Google Patents

Abstract

PURPOSE:To reproduce a message from a different kind of a terminal equipment (digital TV telephone set, analog still picture TV telephone set) from that at storage by providing synchronization adjustment function to take synchronization for synchronizing reproduction and alternate reproduction of an audio data and a picture data stored in a center to the converter. CONSTITUTION:In the case of storing a message to a center by an analog still picture TV telephone set 1, it is identified at the point of time of a call that a data comes from the analog still picture TV telephone set 1 and terminal identification information of the analog still picture TV telephone set 1 is added and an analog audio signal is converted into a digital mu-low voice by an ISDN network 5 and a message storage section 9 stores the data via a reception control section 7. When the user selects the simultaneous reproduction of the voice signal and the picture signal, a digital TV telephone set use voice picture synchronizing adjustment section 103 takes synchronization so that the voice signal in the data storing alternately the voice signal and the picture signal and a succeeding pattern are simultaneously reproduced and the result is reproduced to the digital TV telephone set 3 via the ISDN network 5 and the transmission control section 8.

Description

[Detailed Description of the Invention] [Industrial Application Fields] The present invention is applicable to digital TV telephone messages/analog still images T
V-telephone message mutual conversion device, terminal (
Messages can be stored and played back without specifying analog still image TV phone or digital TV phone.

[Prior art] In conventional systems of this type, it is extremely difficult to synchronize audio data and image data for simultaneous or alternate playback, and it is extremely difficult to synchronize audio data and image data for simultaneous or alternate playback, and it is difficult to synchronize audio data and image data for simultaneous or alternate playback. No playback was done.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned circumstances, and provides a digital device that can reproduce messages from different types of terminals by providing a synchronization adjustment function between audio and images at the center. TV
An object of the present invention is to provide a mutual conversion device for telephone messages/analog still image TV telephone messages.

[F-stage for solving the problems] In order to solve the above problems, the present invention provides an analog still image TV phone and a digital TV phone equipped with audio/image input/output functions, and storage and retrieval of audio/images. In a center-to-end type real-time audio/image information storage and exchange system connected via an ISDN network or an analog stationary station with the function of alternately transmitting and receiving audio and images, When playing voice and image messages stored at the center using a digital TV phone, which is equipped with a function to send and receive audio and images at the same time, the voice and image messages must be played back at the same time, or means for selecting whether to alternately reproduce audio and images; and when the usage name of the digital TV telephone selects simultaneous reproduction, the sound of data in which audio and images are stored alternately; A means for synchronizing sound and images by converting the image data format of an analog still image TV phone into an image data format of a digital TV phone and playing them simultaneously; Converts the image data of the stored message from the analog still image video phone image data format to the digital video phone image data format when alternate playback of images is selected.
It is characterized by being equipped with a means for reproducing sound and images alternately as it is, and is also equipped with an analog static 111 TV phone, a digital TV phone, and a voice/image input/output function. In a center-to-end type real-time voice and image information storage and exchange system in which a center equipped with image storage and search functions is connected via an ISDN network, voice and image information stored at the center through the digital TV phone are Analog still image T for image messages
When playing back on a V-telephone, after playing the audio corresponding to the time of the image data of a certain number of continuous screens, the first screen of the certain number of continuous screens is converted from the image data format of the digital TV phone to the analog still image TV. The present invention is characterized by comprising means for alternately reproducing audio and images by converting them into a telephone image data format and reproducing them.

[Operations] The present invention provides a method for reproducing on a digital TV phone images stored from an analog still image TV phone using the above-mentioned means.
The sound and the next screen of the data that is stored alternately are converted into analog static 1 = By converting the image data format of both TV phones to the image data format of the digital TV phone and playing them back at the same time. , the main feature is synchronization of audio and images, and it also allows messages accumulated from digital TV telephones to be played back as analog still images. After playing the sound j4j corresponding to the time, the first screen of the constant number of consecutive screens is converted from the image data format of the digital TV phone to the image data format of the analog still image TV phone, and then the audio is played back. Its main feature is to synchronize the images.

[Embodiment] FIG. 1 illustrates a mutual conversion device for digital TV telephone transmission/analog static transmission 1 and both TV telephone transmission i according to the present invention.

] is a user terminal analog still image TV phone that transmits analog still images and audio, 4 is a user terminal analog still image TV phone that receives analog still images and audio, and 2 is a user terminal that transmits digital images and audio. User terminal digital T
V phone, 3 is a user terminal digital TV phone that receives digital images and sounds, 5 is an IJN network (digital telephone network), 7 is a reception control unit that controls data reception, and 8 is a control unit that controls data transmission. 9 is a transmission control unit that stores messages from users; 101 is a transmission storage unit that stores messages from users; 101 uses dual-tone control information to distinguish audio data and image data from data retrieved from the storage unit; From the image data format of the video TV phone to the digital T
An analog/digital image data conversion unit that converts the image data format of the V-telephone to the analog/digital image data format; A digital/analog image data converter 103 converts the data into the image data format of the analog still image TV phone, and converts the data M Nj in which audio and images are stored alternately, and then converts the image into the image data format of the analog still image TV phone. A digital TV phone Ondo j/image synchronization adjustment unit 104 synchronizes the sound volume and the image by converting the image data format into the digital TV phone image data format and playing it back at the same time. The sound corresponding to the time of the image data, j
After playing i, the first one of the constant number of consecutive screens
This is an audio/image synchronization adjustment unit for analog RV@talk that synchronizes audio and images by converting the screen from the digital TV phone image data format to the analog still image TV phone image data format and playing it back.

6 is a center consisting of 7, 8, 9.10,
10 is a digital TV telephony/analog static 111-picture TV telephony mutual conversion device consisting of 101, 102, 103, and 104.

FIG. 2 is a conceptual diagram of the basic structure of a signal format for transmitting and receiving image data of an analog static TV telephone based on TTC, JJ-40, and 10.

When transmitting image data from an analog still image TV telephone, dual tone/control information is first transmitted, and then image information is transmitted. Note that, depending on the communication status, dual tone and image information may not be included.

The operation of the embodiment of the invention according to claim (1) will be described below.

Figure 1, 1 analog still image TV ¥8. Depending on the case, when messages are stored at the center, the data is identified as coming from an analog still image TV phone when the call is connected, and information about the terminal type of the analog still image TV phone is added. Then, the analog voice is converted to digital μm low voice by the ISDN network 5, and the data is stored in the transmission storage unit 9 via the reception control unit 7.

When a message stored from an analog still image TV phone (1) is played back on a digital TV phone (3), a digital TV phone message/analog still image TV phone message mutual conversion device 10 is used.
The analog/digital image data converter identifies sound 7B data and image data based on the dual tone control information, and converts the image data format of the analog still image TV phone into the image data format of the digital TV phone.

Next, when the user selects simultaneous playback of audio and images, the digital TV phone audio/image synchronization adjustment unit 103 alternately plays back the audio and images of the stored data and the next one. The screens are synchronized so that they are played simultaneously, and are played back to the digital TV phone 3 via the transmission 1g control unit 8 and the ISDN network 5.

This synchronization adjustment method is shown in FIGS. 3(a) and 3(b).

(a) in the same figure is transmission S data accumulated from an analog still image TV phone, and is accumulated in the order of voice 1, duplex 1, etc., alternating in time.

When synchronizing messages stored in the analog still image TV phone format to the digital TV phone format, audio 1 and the next screen 1 are played back at the same time, as shown in (b). The same applies to sound, ii 2 and screen 2, sound jJi 3 and screen 3, and audio 4 and screen 4.

If the user selects alternate playback of audio and screen, the data is played directly on the digital TV phone 3 via the transmission control unit 8 and the ISDN network 5.

The operation of the embodiment of the invention according to claim (2) will be described below.

When messages are stored in the center 6 using the digital TV phone 2 in Figure 1, the data is identified as coming from the digital TV phone when the call is connected, and the terminal type of the digital TV phone is identified. Add information to 5 ISD
The data is stored in the message storage section 9 via the reception control section 7 via the N network.

2 digital TV? 4: When playing back the messages stored from ^ on the analog still image TV phone 4, the digital/analog image data converter 102 converts the image data format of the digital TV phone to the image data format of the analog still image TV phone. do.

At this time, the dual tone and control information shown in FIG. 2 are added immediately before the image data. Next, 104 analog TV @
After the speech audio/image synchronization adjustment unit reproduces the audio corresponding to the time of the image data of the continuous constant number of screens, synchronization is performed so that the first screen of the continuous constant number of screens is reproduced. Via the transmission control unit, it is reproduced on the analog still image TV phone 4 via the ISDN network 5.

This synchronization adjustment method is shown in FIGS. 3(c) and 3(d).

(e) in the figure is message data accumulated from a digital TV telephone, and the voice and image are accumulated in temporal synchronization.

When synchronizing messages stored in the digital TV phone format to the analog still image TV phone format,
As shown in (d), first the audio 1 corresponding to four consecutive screens from screen 1 to screen 4 is played, and then the first screen of the four consecutive screens from screen 1 to screen 4 is played. Play 1. Then, in the same way, audio 2 and screen 5, audio 3 and screen 9
, audio 4 and screen 13, the audio and images are played back alternately in time.

``Effects of the invention'' - As explained, by setting the synchronization adjustment function to synchronize the synchronous playback and alternate playback of the audio data and image data stored in the center, it is possible to Model terminal (digital TV phone, analog static IF-
It is possible to play back messages from (video/phone).

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the configuration of the digital TV telephone message/analog still image TV telephone message mutual conversion device of the present invention;
The figure is a basic conceptual diagram of the signal format when transmitting and receiving image data in an analog still image TV phone. Figure 3 shows how to synchronize audio data and image data in the synchronization adjustment section explained in Figure 1. FIG. 1...Analog still image TV phone (for sending), 2...Digital TV phone (for sending), 3...Digital TV
Telephone (receiving (daily use), 4...Analog static 111-screen TV telephone (for receiving), 5...l5I) N network (digital telephone network), 6...Center, 7...Reception control section , 8...
Transmission control unit, 9...Message storage unit,] Misaki...Digital TV telephone message/analog still image TV telephone message mutual conversion device, 10]...Analog/digital image data conversion unit, 102...Digital/ Analog image data converter, 103... Digital TV phone audio/image synchronization adjustment unit, 104... Analog TV phone audio/image synchronization adjustment unit.

Claims (2)

[Claims] (1) A center where analog still image TV phones and digital TV phones equipped with audio/image input/output functions and a center equipped with audio/image storage and search functions are connected via an ISDN network.・In a two-end type real-time audio/image information storage and exchange system, it is equipped with the function of alternately transmitting and receiving audio and images.
When playing an audio and image message stored at the center using an analog still image TV phone on a digital TV phone that has the function of transmitting and receiving audio and images at the same time, the audio and image messages must be played back at the same time, or means for selecting whether to alternately reproduce audio and images; and when a user of the digital TV phone selects simultaneous reproduction, the audio and the image of the data that are stored alternately; A means for synchronizing audio and images by converting a screen from an analog still image video phone image data format to a digital video phone image data format and playing them simultaneously; When alternate reproduction of images is selected, means is provided for converting the image data of the stored message from the image data format of an analog still image TV phone to the image data format of a digital TV phone, and then playing back the audio and images alternately as they are. A mutual conversion device for digital TV telephone messages/analog still image TV telephone messages, characterized in that: (2) A center where analog still image TV phones and digital TV phones equipped with audio/image input/output functions and a center equipped with audio/image storage and search functions are connected via an ISDN network.・In a two-end type real-time voice and image information storage and exchange system, the voice and
When playing an image message on an analog still image TV phone, after playing the audio corresponding to the time of the image data of a certain number of continuous screens, the first screen of the certain number of continuous screens is played back as an image of the digital TV phone. A digital TV telephone message/analog still picture TV phone characterized by comprising a means for alternately reproducing audio and images by converting the data format into an analog still picture TV phone image data format and playing it back. Mutual message conversion device.