JPH03125553A - Transmitter and receiver for music picture information - Google Patents

Abstract

PURPOSE:To compress the capacity required for a moving picture file at a receiver side by storing a transmission frame into a buffer till a 1st picture index is detected. CONSTITUTION:For example, a communication interface 1-7 for the 2B+D ISDN standards is used, a stereo music signal is assigned to a B-channel (information channel) music signal storage section 1-1 and 2 stages of index storage sections 1-2, 1-3 for a picture index describing type of a moving picture file storing the movement of a moving picture in terms of elements provided to a receiver side and a display start timing and for a picture index describing a display timing and its type of pattern information representing the movement in terms of elements are provided to a transmitter side. A moving picture displayed at a receiver side is controlled by assigning the type of the moving picture file and the type of pattern information to a D-channel (control channel) and sending the result at the detection of the display timing. Thus, the capacity required for the moving picture file provided to the receiver side is compressed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a digital signal transmitting/receiving device, and in particular,
In a transmitting/receiving device in a digital signal transmission system using a communication interface of the 2B+D l5DN (Integrated Service Digital Network) standard, 64 kb/s
When transmitting a stereo music signal with a bandwidth of about 7kHz using a digital line with a line speed of The present invention relates to a music image information transmitting and receiving apparatus that reproduces music and moving images such as animations on the receiving side by transmitting the type of screen information.

[Conventional technology]

When transmitting music information and image information using a digital line with a line speed of about 64 kb/s, the music signal is allocated to part of the information channel, and the image information is allocated to the remaining part of the information channel. monaural music in the 7kHz band and a still image taken every 10 seconds (51
2x512 dots, RGB)
One possible method is to allocate music signals to all information channels and allocate image information to the control channel, sending stereo music at 7 kHz and a still image at a rate of about one per minute, but this would not create an audiovisual impression or entertainment value. To improve performance, it is desirable to be able to play videos along with stereo music.

[Problem to be solved by the invention]

13=4- However, in the above technology, a stereo music signal is transmitted through an information channel, a moving image file is provided on the receiving side, and music information is transmitted in order to play a moving image such as an animation in synchronization with the music signal. When video information is displayed cyclically by matching the display start timing of video playback, there is a problem in that a huge amount of video files are required on the receiving side.

The present invention has been made to solve the above problems.

An object of the present invention is to provide a technology that can compress the capacity of a moving image file on the receiving side and play back stereo music and moving images.

The above and other objects and novel features of the present invention will become apparent from the description of this specification and the accompanying drawings.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a digital signal transmitting device that includes a music signal storage section that stores digital signals obtained by quantizing music, and a music signal storage section that stores digital signals obtained by quantizing music, and displays the music on the receiving side in accordance with the time from the start of the music. a first image index that describes the type of video file that stores the screen information that makes up the video to be displayed, the display start timing of the video, and the time starting from the display start timing of the video specified by the first image index; A second image index that describes the display timing and type of screen information that make up the moving image in terms of time starting from the display timing of the screen information that makes up the moving image, and the quantized digital signal of the song. In addition to assigning it to the information channel of the transmission frame, the time from the start of the song is measured, and if it corresponds to the display start timing of the moving image specified by the first image index, the first image index is assigned to the control channel of the transmission frame. A signal indicating that there is a video file and the type of the video image file are assigned to multiple transmission frames to configure a transmission frame, and if the timing corresponds to the display timing of the screen information that configures the video specified by the second image index, ,
a frame configuration unit that configures a transmission frame by allocating a signal indicating that the transmission frame is a second image index and the type of screen information to a plurality of transmission frames; and then detecting the first image index. until
It is characterized by comprising first and second frame buffers that buffer transmission frames.

Also, a decoding section decodes the transmission frame transmitted from the music image information transmitting device, sends an information channel signal to the music playback section, and sends a control channel (circuit switched signal channel) signal to the moving image display control section. Then, the digital signal that quantized the song is converted into digital/analog (
D/A) a music signal playback section that converts the music signal and plays the music signal; first and second video buffers that buffer information on a plurality of screens constituting a video image on memory;
a moving image storage section that stores screen information of a plurality of screens constituting a moving image in accordance with an image index as one unit of moving image file; Alternatively, it is characterized by comprising a moving image display control section that displays the corresponding screen information on the moving image buffer from which the moving image file has been pulled up when the moving image file is pulled up to the second moving image buffer and a signal indicating the second image index is detected. shall be.

[Effect]

According to the above-mentioned means, the present invention can, for example,
Using a communication interface based on the 5DN standard, a stereo music signal is assigned to the B channel (information channel), and the sending side is informed of the type and display start timing of the moving image file that stores the elemental movement of the moving image on the receiving side. It has two indexes: the described image index and the image index that describes the display timing and type of screen information that makes up the elemental movement.When detecting the display timing, the type of video file and the type of screen information are determined. By assigning it to the D channel (control channel) and transmitting it, the moving image displayed on the receiving side is controlled. Thereby, the capacity of the moving image file provided on the receiving side can be compressed.

In addition, by providing two buffers for music signals on the transmitting side and two buffers for displaying moving images on the receiving side, the time required to pull a moving image file from secondary storage to the moving image buffer can be reduced. It is possible to eliminate delays in display timing caused by

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be specifically described using the drawings.

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a music image information transmitting apparatus according to the present invention when an ISDN line is used.

In FIG. 1, 1-1 is a music signal storage section that stores quantized music signals.

Reference numeral 1-2 denotes a first image index storage unit, which stores a first image index that describes the type and display start timing of a moving image file that stores the elemental movement of a moving image provided on the receiving side.

Reference numeral 1-3 denotes a second image index storage unit that describes the display timing and type of screen information that constitutes the elemental movement of a moving image.

1-4 is a frame configuration unit, which allocates the quantized digital signal of the song to the B channel (information channel) of the transmission frame, measures the time from the start of the song, and calculates the time specified by the first image index. If it corresponds to the display start timing of a moving image, a signal indicating that it is the first image index and the type of the moving image file containing the relevant elemental movement are sent to the D channel (circuit switched signal channel) of the transmission frame. If it is assigned to multiple transmission frames and corresponds to the display timing of screen information constituting the moving image specified by the second image index, a signal indicating that it is the second image index and the relevant screen information are displayed. A transmission frame is configured by assigning types to multiple transmission frames.

1-5 and 1-6 are first and second frame buffers, which buffer transmission frames until the next first image index is detected.

1-7 is a 2B+D ISDN standard communication interface.

FIG. 2 is a block diagram showing a schematic configuration of an embodiment of a music image information receiving device using an ISDN line according to the present invention.

In FIG. 2, 2-1 is a 2B+D 15DN standard communication interface.

A decoding section 2-2 decodes the received frame, sends the B channel signal to the music reproduction section 2-3, and displays the D channel signal as an image.

2-4 is an image storage unit that stores moving image files containing various elemental movements.

2-5 and 2-6 are first and second image buffers,
A moving image file containing elementary movements is buffered for displaying the moving image.

2-7 is an image display control unit which, when detecting the first image index, pulls up the moving image file stored in the image storage unit 2-4 to the first image buffer 2-5 or the second image buffer 2-6. At the same time, when a signal indicating the second image index is detected, it is pulled up to the first or second image buffer. Among the screen information, the screen information corresponding to the type described in the second image index is controlled to be displayed on the display section 2-8.

Next, the operation of this embodiment will be explained.

In FIGS. 1 and 2, when the sending side receives a transmission request from the receiving side, the frame configuring section 1-4 stores the first image index storage section 1-2, the second image index storage section 1-2, and so on.
3. Check the music signal storage section 1-1 at a constant frame period. At this time, if there is a first image index with the same video display start timing in the first image index storage unit 1-2, the first frame (transmission frame) B, B2 channel has a silent signal 3
-2 is set, and the first index display signal 3-1 is set in the D channel. Video file type 3 displayed on the receiving side on the D channel from the second frame to the fourth frame
Similarly, a silence signal 3-2 is set in the -3 and B channels and transmitted through the communication interface 1-7. Furthermore, as shown in FIG. 3B (one configuration example of a frame on the buffer), the frame configuration unit 1-4 converts the music signal for four frames into B while transmitting the first image index. channel, and a signal (100
0) 3-4, set the screen information type information 3-5 in the D channel of the second frame to the fourth frame, and set the screen information type information 3-5 to the second frame buffer 1-5 or the second frame buffer 1.
-Accumulates to 6.

Furthermore, if there is no first image index whose start timing matches the first image index storage unit 1-2, for example, as shown in FIG. Set the music signal to the D channel and the signal (0000) 4-1 with no image display, and if the corresponding second image index exists in the second image index storage section 1-3, set the second image index. Indicating signal (1000) 4-2 is set, and information 4-3 indicating the type of screen information is set in the subsequent image frame.

While the above processing is continuing, if there is a first image index whose screen display start timing matches, the contents of the frame buffer in question are sent to the receiving side through the communication interface 1-7, and the sending side reads the other frame. Processing similar to the above is performed using a buffer.

On the receiving side, when receiving an image frame in which the D channel signal is a signal indicating the second image index (1,000) or a signal indicating that it is not the image display timing (0000), the decoding unit 2-2 converts the B channel signal. The signal is sent to the music playback section 2-3, and when a signal (1000) indicating the second image index is detected, the signal of the B channel of the subsequent image frame is sent to the image display control section 2-7.
The image display control unit 2-7 determines the type of screen information on the image buffer and displays the screen information on the display unit 2-8.
The same process is repeated thereafter.

FIG. 5 shows the flow of the transmission process, and FIG. 6 shows the flow of the reception process. A description of these flows will be omitted here because they can be easily understood by looking at the above description and the flow.

As can be seen from the above explanation, according to this embodiment, 2B
Using +D's l5DN standard communication interface, a stereo music signal was assigned to the B channel, and the type and display start timing of the moving image file that stored the elemental movement of the moving image provided on the receiving side was written on the sending side. It has two indexes: an image index and an image index that describes the display timing and type of screen information that constitutes elemental movement.When detecting the display timing, the type of video file and the type of screen information are By controlling the display of the moving image by assigning it to a channel and transmitting it, it is possible to compress the capacity of the moving image file that the receiving side has.

In addition, by providing two buffers for music signals on the transmitting side and two buffers for displaying moving images on the receiving side,
It is possible to eliminate a delay in display timing due to the time taken to pull a moving image file from secondary storage to a moving image buffer.

Furthermore, when the present invention is applied to a CD new release guide service, etc., the receiving side is equipped with moving images that store the elemental movements of multiple types of moving images depending on the genre of the song and the performer,
By instructing the display timing of moving images from the transmitting side, it is possible to reproduce moving images such as stereo music and animations in the 7 kHz band even when using a digital line with a speed of 64 kb/s.

In the above embodiment, a case has been described in which screen information that is not subjected to compression processing is stored for a moving image file.However, in order to compress the storage capacity of a moving image file, the present invention Of course, it is also possible to encode and store only the difference information, and in this case, a decoder compatible with the encoding method is provided between the image buffer and the display section.

The present invention has been specifically explained above based on examples, but
It goes without saying that the present invention is not limited to the embodiments described above, and can be modified in various ways without departing from the spirit thereof.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to compress the capacity of a moving image file provided on the receiving side 56-.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of the music image information transmitting device of the present invention when using an ISDN line, and FIG. 2 shows music images when using an I5DN line of the present invention. FIG. 3A is a block diagram showing a schematic configuration of an embodiment of the information receiving device. FIG. 3A is a diagram showing an example of the structure of the first image index frame of the embodiment. FIG. 3B is a diagram showing a frame on the buffer of the embodiment. FIG. 4 is a diagram showing an example of the configuration of the contents of the frame buffer of this embodiment. FIG. 5 is a flowchart of the transmission process of this embodiment. It's a flow. In the figure, 1-1...music signal storage section, 1-2.first image index storage section, 1-3..second image index storage section, 1-4..frame configuration section, 1-5 ...First frame buffer, 1-6...Second frame buffer, 1
-7.2-1...Communication interface, 2-2...
Decoding section, 2-3...Music playback section, 2-4...Image storage section, 2-5...First image buffer, 2-6...Second image buffer, 2-7...Screen Display control section, 2-8
...Display section, 3-1...First image index display signal, 3-2...Silence signal, 3-3...Moving image file type, 3-4.4-2...Second Image index display signal, 3-5.4-3...Screen information type information, 4-1.
...No image display.

Claims (2)

[Claims] (1) In a digital signal transmitting device, there is a music signal storage unit that stores digital signals obtained by quantizing music, and screen information that constitutes a moving image to be displayed on the receiving side in accordance with the time from the start of the music. The first file describes the type of the stored video file and the display start timing of the video file.
The image index and the display timing of the screen information that makes up the moving image in terms of the time starting from the display start timing of the moving image specified by the first image index and the display timing of the screen information making up the moving image as a starting point. A second image index that describes the type of screen information, a quantized digital signal of the song is assigned to the information channel of the transmission frame, and the time from the start of the song is measured to generate the video specified by the first image index. If the timing corresponds to the image display start timing, a signal indicating that it is the first image index and the type of the video file in question are assigned to the control channel (circuit switched signal channel) of the transmission frame to multiple transmission frames, and the transmission frame is sent. , and if it corresponds to the display timing of the screen information that constitutes the moving image specified by the second image index, a signal indicating that it is the second image index and the relevant screen information are sent to the control channel of the transmission frame. a frame configuration unit that configures a transmission frame by assigning a type to a plurality of transmission frames; and a first and second frame buffer that buffers the transmission frames until a first image index is detected. Features of music image information transmitting device. (2) Decode the transmission frame transmitted from the music image information transmitting device according to claim 1, and send the information channel signal to the music playback section, and also send the control channel signal to the moving image display control section. a decoding section for transmitting the music; a music signal playback section for converting the digital signal obtained by quantizing the music from digital to analog and playing back the music signal; a moving image storage unit that stores information about a plurality of screens constituting a moving image as one unit of moving image file in correspondence with a second moving image buffer and a first image index;
A signal indicating the image index is detected, the corresponding video file is pulled up to the first or second video buffer, and the second video file is uploaded to the second video buffer.
1. A music image information receiving device comprising: a moving image display control unit that, when a signal indicating an image index is detected, displays corresponding screen information on a moving image buffer in which a moving image file is being pulled up.