JPH06105937B2 - Music / video information transmission system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses ISDN (Integrated Services Digit) to store still image information with lyrics and music information accumulated in a center.
tal network) to a terminal unit (telephone subscriber) via a digital telephone line and display a still image on the receiver of the terminal unit to play music and sing while watching the image. The present invention relates to an optimal music / video information transmission method that can be used for so-called karaoke.

[Conventional technology]

ISDN (Integrated) which is an example of the digital telephone network.
Services Digital Network) aims to provide telephone subscribers with a wide variety of integrated services by combining digital transmission systems and digital exchanges to extend digital telephone lines between telephone subscribers. Yes, this ISDN has 64 subscriber telephone lines.
Two types of information of Kb / sec and one type of information of 16 Kb / sec can be transmitted.

Therefore, conventionally, there has been a request from a terminal unit (telephone subscriber) for encoding and storing music information and still image information (converting an analog signal into a digital signal) in a center using the ISDN. In this case, the center transmits music information as 64 Kb / sec information on one side and still image information as 64 Kb / sec information on the other side to the terminal unit, and the terminal unit encodes the above information (digital signals are converted into analog signals). There was a music / video information transmission system for converting music into signals and playing music and displaying images.

[Problems to be solved by the invention]

However, in the conventional music / video information transmission system as described above, the code and reproduction of music are performed immediately, whereas the display of a still image has a data amount that is larger than the data transmission amount per unit. It is remarkably large, for example, the data amount of a color still image is about 90KB according to actual measurement, and 64Kb
It takes a little less than 12 seconds to transmit at a transmission rate of / second, so it was difficult to associate music with video and play back / display them in time.

[Means for solving problems]

The present invention has been made to solve the above-mentioned conventional problems, and transmits still image information and music information accumulated in a center to a terminal unit, and the information is transmitted by the terminal unit. The purpose is to provide a music / video information transmission method that can be reproduced without time lag, and its gist is the still image information and music information coded and accumulated in the center and the time of both information. When transmitting the control information for controlling the relationship to the terminal unit via the digital line, the still image information and the control information are transmitted to the terminal unit prior to the music information and are combined to start the transmission of the music information. According to the music / video information transmission method, the music reproduction and the still image display are synchronized by sequentially outputting the still image information based on the control information.

〔Example〕

The present invention will be described in detail below with reference to the embodiments shown in FIGS. 1 is a block diagram showing an embodiment of a music / video information transmission system according to the present invention.
FIG. 2 is a diagram showing an information format of the information transmission system, and FIG. 3 is an explanatory diagram of a transmission method of the music / video information transmission system.

In the figure, reference numeral 1 is a center for encoding and storing transmitted color still image information and music information. Still image information is converted by a color still image encoding device (not shown) and stored in a still image information storage memory 2. To be done. Also, the music information is converted by a voice encoding device (not shown),
It is stored in the music information storage memory 3.

Reference numeral 4 is a control information storage memory that represents the temporal relationship between the still image information and music information, and 5 is a center control unit that stores the still image information storage memory 2, the music information storage memory 3, and the control information storage memory 4. The information thus obtained is transferred to the ISDN 7 digital telephone line 8 via the line interface unit 6.
The control is performed when the data is sent to. Reference numeral 9 is a terminal unit (telephone subscriber) that reproduces and displays still image information and music information transmitted from the center 1, 10 is a line interface unit connected to the digital telephone line 8, and 11 is a coded unit. Still image CODEC (C that combines still image information
oder + Decoder), 12 is a voice CODEC that also composites encoded music information, 13 is an image buffer memory that stores up to 3 screens of combined still image information, and 14 is playback of music and storage of still images. A terminal control unit for controlling display, 15 is a speaker, and 16 is a monitor receiver.

FIG. 2 shows a format of information stored in each memory of the still image information storage memory 2 and the music information storage memory 3 and the control information storage memory 4, and 17 in the figure represents a still image information format, 17a, 17b, 17c, ... Represents still image information displayed first, still image information displayed second, still image information displayed third, ..., respectively. 18a, 18b, 18c, ... are the first still image information 17a, the second still image information 17b, and the third still image information, respectively.
The lyrics information is displayed in a superimposed manner on 17c, .. The lyrics information 18a, 18b, 18c ,.

Reference numeral 19 represents a control information format, and 19a, 19b, 19c, ... Are the first still image information 17a and the second still image information 17 respectively.
b, display time data representing the display time of the third still image information 17c ,. 20a, 20b, 20c, ... Control the color change of the lyrics information displayed by being superimposed on the first still image information 17a, the second still image information 17b, the third still image information 17c ,. Information, and 21 represents a music information format.

[Operation of Example]

Next, referring to FIGS. 2 and 3, in order to explain the operation of the above embodiment, first, the control information 19a, 19b, 19c, ... And 20a, 20b shown in the control information format 19 of the center 1 will be described. ,
20c, ... Are transmitted from the line interface 6 to the terminal unit 9 through one of the 64 Kb / sec channels 8A of the digital telephone line 8 and stored in the terminal control unit 14 via the line interface 10. At the same time, still image information 17a, 17b, 17c, ... And 18a, 18b, of still image information format 17
18c, ... are transmitted from the line interface 6 of the center 1 to the terminal unit 9 via the other channel 8B of 64 Kb / sec, and the still image CODEC 11 is transmitted via the line interface 10.
After being combined in (1), they are sequentially stored in the image buffer memory 13.

And, it takes more than ten seconds for 64 Kb / sec ISDN to receive the normal color still image information by the terminal unit 9, so after the two or more still image information is completely transmitted, the music information is transmitted from the center 1. The music information of the format 21 is transmitted from the center 1 to the terminal unit 9 through one of the 64 Kb / sec channels 8A of the digital telephone line 8, converted into analog music information by the voice CODEC 12 and emitted from the speaker 15.

On the other hand, the music information includes a time parameter indicating the elapsed time of playing the music by encoding, and when the transmission of the music information is started, the time parameter is input to the terminal control unit 14 of the terminal unit 9. Then, the still image information and the lyrics information accumulated in the image buffer memory 13 are sequentially displayed on the monitor receiver 16 based on the display time information designated by the control information format sent in advance. The color of the lyrics information changes according to the color change information included in the control information format. That is, by obtaining the time of the music information to be transmitted for one piece of still image information in advance and creating the time relationship between both pieces of information as control information, the terminal unit 9 can play music synchronized with the still image. Is possible. That is,
When the transmission of music information is started, the terminal control unit of the terminal unit 9
As for 14, the first still image information (screen 1) 17a and the lyrics information 18a accumulated in the image buffer memory 13 are displayed on the monitor receiver 16. This display is continued for the display time 19a of (Screen 1) 17a of the control information format 19, and the lyrics information 18a is displayed in the control information format 19a.
The color changes according to the color change information 20a.

After the display time has elapsed, the second still image information (screen 2) 17b and the lyrics information 18b are similarly displayed by the display time 19b and the color change information 20b. Similarly, the next screen is sequentially displayed by the next screen display time information of the control information format 19.

〔The invention's effect〕

As described above, the music / video information transmission system according to the present invention transmits, via a digital line, still image information and music information coded and stored in the center and control information for controlling the time relationship between both information. When transmitting to the terminal unit, the still image information and the control information are transmitted to the terminal unit prior to the music information to be composited, and still images are sequentially output based on the control information according to the start of the transmission of the music information. By doing so, since the configuration is such that the music reproduction and the still image display are synchronized, for example, a karaoke music / video system using a communication medium becomes possible, and a conventional karaoke tape, a compact disc or a leather disc, etc. There is an effect that it becomes unnecessary and an economical karaoke terminal can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a music / video information transmission system according to the present invention, FIG. 2 is a diagram showing an information format of the music / video information transmission system, and FIG. 3 is the same music / video. It is explanatory drawing of the transmission method of an information transmission system. 1 ... Center, 2 ... Image information storage memory, 3 ... Music information storage memory, 4 ... Control information storage memory, 5 ... Center control unit, 6, 10 ... Line interface unit, 8 ...
Digital telephone line, 9 ... Terminal, 11 ... Still image CODE
C, 12 ... Voice CODEC, 13 ... Image buffer memory, 14 ...
… Terminal control unit, 15 …… Speaker, 16 …… Monitor receiver, 17 …… Still image information format, 19 …… Control information format, 21 …… Music information format.

Claims (1)

[Claims] 1. When transmitting still image information and music information coded and stored in a center and control information for controlling a time relationship between the two information to a terminal unit via a digital line, the still image information and the music information are transmitted. Music reproduction and still image display are performed by transmitting control information and the music information to the terminal unit prior to the music information and combining them, and sequentially outputting still images based on the control information at the start of transmission of the music information. A music / video information transmission method characterized by being synchronized.