JP3362411B2 - Still image transmission method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a still image transmission system in a system including a still image reproducing apparatus for providing a plurality of still images and a still image recording / reproducing apparatus for recording the still images, and information such as CATV. Used for providing services.

[0002]

2. Description of the Related Art In a conventional still image transmission system, when a desired still image is retrieved from a plurality of still images pooled on the receiver side, it is necessary to retrieve them one by one.

[0003]

In the prior art, when the number of tracks per still image is reduced, it becomes difficult for the receiving side to recognize and search the contents of the recorded still image. Alternatively, if the number of tracks per still image is increased in order to enable the content of the still image to be recognized, the amount of information also increases. Further, the conventional still image recording apparatus on the receiving terminal side has a problem that unnecessary information is recorded because it is difficult to select still images. In addition, adding data to a still image and performing a search on the receiving terminal side using the data increases the cost of the receiving terminal.

Therefore, an object of the present invention is to make it possible to easily retrieve any still image recorded on the receiving side while keeping the cost of the receiving terminal low, and to obtain the required still image. Only the information is recorded in the still image recording device on the receiving side.

[0005]

In order to achieve the above object, the present invention comprises a still image transmission system described below.

A time chart for still image transmission is shown in FIG. That is, the title image 1 is transmitted for a longer time than each of the plurality of related images 2 related to the title image. In order to send a still image in this time chart, the still image reproducing apparatus reproduces the title image by the data still image control apparatus 12 as long as it is visible as shown in FIG. 2 and compares the related image with the title image. Control to play short. Further, a terminal control signal is transmitted from the transmitting side together with the still image data. The terminal device has an input means for making a reservation for arbitrary still image data.

[0007]

By using the still image transmission system, only the information reserved in advance on the receiving side is recorded in the still image recording / reproducing device on the receiving side. Further, when the still image recording / reproducing apparatus on the receiving side is reproduced at a speed equivalent to that at the time of recording, that is, the standard speed, it is difficult to visually confirm the contents of the related image 2, but the title image 1 can be confirmed. is there.
Therefore, in the still image search, a title image to which a desired related image belongs is searched at the standard speed, and then the still image recording / reproducing device 4 is reproduced at a speed slower than the standard speed to search for the related image. A desired still image can be easily searched from the still images.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 4 is an example of a transmitted still image data time chart, FIG. 5 (a) is an example of a system configuration, and FIG. 5 (b) is an example configuration diagram of a receiving terminal.

In this embodiment, a magneto-optical disk is used as a still image reproducing device. Usually, when recording a still image on a magneto-optical disk, the disk is divided into some sections, and a plurality of still images are grouped and recorded in each section.
Therefore, a still image was recorded on the magneto-optical disk so that the physical still image recording track in this embodiment was linearly modified to be as shown in FIG. By controlling this magneto-optical disk with a personal computer, a still image is transmitted as shown in the time chart of FIG. That is, the algorithm of the personal computer software in this embodiment first reproduces track 1 for 30 frames. Then, the operation of moving to the next track, reproducing one frame, and moving to the next track is repeated 120 times. After that, one track of the title image and 120 tracks of the related image are subtracted from 1000 tracks to proceed to 879 tracks ahead, and the track 1000 is reproduced for 30 frames. This is repeated 12 times up to track 12000. In this embodiment, NT is used as a still image video signal.
Since the SC image is used, the still image data time chart shows that the title image 13 is 30 frames, that is, the same still image is transmitted for 1 second, and then 120 related images related to the title image, that is, 4 seconds are transmitted, and thereafter, Then, a title image different from the title image and its related image were followed, and a total of 12 title images and 1440 related images were transmitted during one minute.

Further, in the time chart of FIG. 4, the unique ID signal of the title image is transmitted from the data transmission device 22 at the moment when a plurality of still images are reproduced from the magneto-optical disk 23. The still image reproduced from the magneto-optical disk 23 and the unique ID signal are mixed by the mixer 21, transmitted through the transmission path 19, and sent to the receiving terminal device 18. The plurality of still images and the unique ID sent to the receiving terminal device 18
The signal is sent to the distribution unit 25 and distributed to the still image data and the unique ID signal. The distributed still image data is sent to the multi-channel tuner 27 and becomes a video signal. The video signal is sent to the descrambling unit 30, and if the still image data is scrambled, it is released. The descrambled video signal is frequency-converted by the frequency converter 34, and then the video recorder 3
Enter 6. In the terminal device, the unique I of the desired still image data
Enter the D number from the keypad 35. The unique ID number is received by the keypad receiving unit 32 and processed by the received signal.
Sent to 29. The unique ID number sent to the CPU 29 is sent to and stored in the memory 28. A plurality of unique ID numbers are stored in the memory. On the other hand, the unique I distributed
The D signal is demodulated in the RF demodulator 26 and sent to the CPU 29. The unique ID signal is compared with the unique ID number stored in the memory, and if they match, the video recorder control unit 33 causes the video recorder 36.
A recording start signal is sent to the remote controller receiver of the. Video recorder 36 that has received the recording start signal
Starts recording a still image. When the unique ID signal does not match the unique ID number, the unique ID
The signal is ignored and the CPU 29 does nothing. When the CPU 29 receives the next unique ID signal while the video recorder 36 is recording a still image, the unique ID signal is similarly compared with the unique ID number of the memory 29, and if they match, the signal is ignored. Recording of still images is continued. If they do not match, the video recorder control unit 33 sends a still image recording stop signal to the video recorder 36. The video recorder 36 which has received the still image recording stop signal stops the recording of the still image.

[0012]

According to the present invention, the receiving side can select and record only arbitrary still image data among the still image data sent from the transmitting side. Further, when the recorded still image data is searched, the related image can be easily searched by using the still image recording / reproducing apparatus at the same speed as the recording speed and replaying the title image.

In the system according to the present invention, the still image recording / reproducing apparatus on the receiving side requires only two advanced functions of external control for starting and stopping recording and variable reproduction speed, and it is easy to use the current home video or the like. It is possible to realize new services such as home shopping and reservation service.

[Brief description of drawings]

FIG. 1 is a time chart of still image transmission in the still image transmission system of the present invention.

FIG. 2 is a system configuration diagram in the still image transmission system of the present invention.

FIG. 3 is a track distribution diagram of still images according to an embodiment.

FIG. 4 is a time chart of still image transmission according to an embodiment.

5A is a system configuration diagram of a still image transmission system in the embodiment, and FIG. 5B is a configuration diagram of a receiving terminal device in the embodiment.

[Explanation of symbols]

1 title image 2 related images 3 receiver 4 Still image recording / playback device 5 video monitor 6 Terminal 7 transmission lines 8 transmitter 9 mixer 10 Data transmitter 11 Still image recording / playback device 12 Data still image controller 13 title images 14 Related images 15 receiver 16 Home Video Recorder 17 video monitor 18 terminal equipment 19 Transmission line 20 transmitter 21 Mixer 22 Data transmitter 23 Magneto-optical disk 24 personal computer 25 distributor 26 RF demodulator 27 Multi-channel tuner 28 memory 29 CPU 30 descrambling section 31 Display 32 keypad receiver 33 Video recorder control unit 34 Frequency converter 35 keypad 36 Video Recorder 37 Video monitor

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 54-35826 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 7/00

Claims (2)

(57) [Claims] 1. A still image transmission system comprising: a still image transmission device for transmitting a plurality of still images; and a receiving terminal for receiving the still image reproduction output at a remote location. A still image is grouped into at least one title image and a plurality of related images related to the title image and divided, and the title image is divided from the related images so that the title image can be visually recognized at the transmission speed of the plurality of still images. A still image transmitting method characterized by transmitting for a long time. 2. A mechanism for controlling a related image to be reproduced for a shorter time than a title image, wherein the still image transmitting device records each still image on one track and one screen and reproduces the title image at the time of reproduction. The still image transmission method according to claim 1, wherein the time is set to be longer than the reproduction time of the related image, and reproduction and transmission are performed.