JPS5945672A - Static picture disk device - Google Patents

Abstract

PURPOSE:To improve the responsiveness of a system using a static picture disk, by storing one frame of static picture and its address at a part different from a disk recording part and then using them for the on-line retrieval. CONSTITUTION:A static picture retrieving part 2 discriminates whether an address requested via an operation panel 5 or an external interface, etc. is coincident with an address stored at a control part 3. Then a video switching part 6 is switched in response to the coincidence signal. An access is given to a video storage part 4, and the information on one frame of static pictures having a high using frequency of a static picture recording part 1 of a disk, etc. is quickly delivered without retrieving the part 1. In such a way, the responsiveness is improved for a system using a static picture disk.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a still image search method for a still image disk device in a video information system.

Conventional Structure and Its Problems A conventional still image disk device is shown in FIG. 1 as a block diagram and will be explained accordingly.

In Fig. 1, numeral 1 is a still image recording section, which has 1500Q concentric tracks as shown in Fig. 2 on a 20mm diameter Tisf disc, and each track has addresses 1 to 150.
00 is recorded, and one frame of still image is recorded on one track.

Reference numeral 2 denotes a still image search unit, which searches a still image disk according to a still image search command 102 from the control unit 3, which will be described later, and when the search is completed, outputs a video and returns a search completion status 103 to the control unit.

A control section 3 controls the still image search section 2 and the interface with the outside. 101 is a search request from the outside to the control unit 3 (including address information), 102 is a search command from the control unit 3 to the still image search unit 2 (including address information), and 103 is a request from the still image search unit 2 to the control unit 3, a search completion status 104 is sent from the control unit 3 to the outside, and 10E5 is a video output of one still image frame from the still image disk.

The operation will be explained below. 1 from the outside l1Iil group 11
When a search request 101 is issued to the search unit 3, the control unit 3 issues a search command 102 to the static 11-both search units 2.

Next, in the static tf- and both search sections 2, the servo motor moves the reading head to the track position of the specified address on the disk, and the reading head continuously reads one frame of still images on the corresponding I/rack. Image output (1
05) At the same time, a search completion status 103 is output to the control unit 3. The control unit 3 determines the search completion status 1.
When receiving 03, a search completion notification 104 is issued to the outside, and the search work sequence is completed in step 1-.

Here, the still image search time seen from the outside is the time from when the search request 101 is issued to the image display device to when the search completion notification 104 is returned.
At present, it is \11 - 0.5 seconds on average, and this is mainly the time taken to move the reading and taking head by the servo motor in the single-stroke search unit 2.

Next, let us consider a case where the still image search system is applied to a still image retrieval system as shown in FIG. Figure 3 is also 1
0 is a static 11 disk device; 20 is a video signal distributor that distributes the video output of one still image frame from the still image disk device; 31 to 38 are frame memory groups X that record and reproduce one still image frame; 41 to 48 are a terminal group consisting of a request keyboard and a TV screen, 50 is a terminal group 4
A communication control section collects Rifnis I signals from 1 to 48 and notifies them all at once to the center control section 6Q, 60 is a center control section that controls the entire system, and 201 to 208 are terminals for receiving signals from the video signal distributor 2o. This is a recording command to record the video in the corresponding frame memory.

In the example shown in Figure 3, the user inputs the address information of the still image from the request keyboard from eight independent terminals, and the center control unit receives the request and searches the still image disk device. Once a request is made and the search is completed, the video output is recorded in the corresponding frame memory, and the video information is output to the terminal's TV screen for the user to view.

If a still image search request is issued from 8 devices (8 users) at the same time, the maximum time is 4 seconds (0.5 seconds x 8 devices)
If the number of terminals increases and the number of terminals increases, the waiting time for users at the terminal will become extremely long, and system responsiveness 1 will become a major problem. .

OBJECTS OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to shorten the search time for specific still images that are frequently requested, thereby speeding up the average response time of the entire system.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a video storage section for storing one frame of a still image separately from the disk recording section,
A specific still image is retrieved from the recording unit offline and stored in the video storage unit, and the address of the specific still image is stored in a memory in the sterilization unit, and a search request is generated during an online search. Each time, the storage address and the search request address are compared, and if they match, the video information in the video storage unit is output as a video instead of the video information from the disc without searching the still image disc. .

DESCRIPTION OF THE EMBODIMENT FIG. 4 is a block diagram of an embodiment of the present invention. 1 is a still image recording section, which is mounted on a disk with a diameter of 20 crn and has 1600 concentric tracks (not shown in Figure 2).
and each track VCU neighbor address is 1 to 15ooo-
i, and one frame of still image is recorded on one track. Reference numeral 2 denotes a still image search unit, which searches a still image disk according to a still image search command 102 from the control unit 3, which will be described later, and when the search is completed, outputs a video and returns a search completion status 103 to the control unit.

3 is a control unit that controls the still image search unit 2, controls the video storage unit 4, controls the operation panel 6, controls the video switching unit 6,
Performs interface control with the outside. 4 is a video storage unit which stores one full frame and video output 106 from the still image search unit 2 according to a write command 106 from the control unit 3;
At the same time, the video information with the edicts 1 and 0 is constantly reproduced and output. 5 consists of the operation panel tear-1), keyboard, display, etc., and can be used offline to record still images of erection 1□(
Registration in section 4 6--This is operated by the operator when performing the registration.

Reference numeral 6 denotes a video switching unit, which receives a switching command 108 from the control unit 3.
When the switching command 108 is ON, the output from the video storage section 4 is output to the column section as the video output 107, and when the switching command 108 is OFF, the output from the video storage section 4 is outputted to the column section 111. outputs the output from the still image search section 2 to the outside as the -1-1 video output 1Q7. Regarding each signal, 101 is a search request from the outside to the control unit 3 (including address information), and 102 is a search command from the control unit 3 to the still image search unit 2 (including address information).
, 103 is a search completion status from the still image search unit 2 to the control unit 3, 104 is a search completion notification from the control unit 3 to the outside, 106 is a video output of one still image frame from the still image screen, and 106 is; This is a write command output from the column section 3Z to the video storage section 4, and one frame video output IQ6 from the still image search section 2 is stored in the video storage section 4 according to this command. 107 is a one-frame video signal finally output from the still image display device to the outside. 108 is a video switching command output from the control unit 3 to the video switching unit 6, and is normally in an OFF state.

The operation will be explained below, but in order to make it easier to understand, we will explain the case where a specific still image is searched in advance offline and registered in the video storage unit 4 (see Figure 5), and when the still image is actually searched online. This will be explained separately for the case where it is operated as a still image file of a stem (see FIG. 6).

(A) Offline mode By switching the online/offline selector switch on the operation panel 5 to the offline side, the controller 3 detects the offline mode and puts the device in the offline state.

Next, input the address information of the specific still image from the keyboard of the operation panel 6 and press the registration key to issue a request to the control unit 3 to register the specific still image in the video storage unit 4.
Then, a search command 102 is output to the still image search section 2. Then, the still image search unit 2 searches for the specified still image, and when the search is completed, it outputs the video 106 of one still image frame and returns a search completion status 103 to the control unit 3. Next, the control unit 3 issues a write command 106 to the video storage unit 4 to write the 1-frame video information 1.
05 in the video storage unit 4, and also controls the address information of the specific still image registered in the video storage unit 4.
Record in the memory in one copy 1. (7), and then lights up the display screen on the operation panel 5 to notify that the registration is complete.

This completes the registration of the specific still image in the video storage unit 4, and the online/offline switch on the operation panel 5 is switched to the online side again.

(B) When online, when the external system [jl issues a search request 101 to the control unit 3 for a still image that is not registered in the video storage unit 4, the control unit 3 compares the storage address with the search request address. Since there is no match, a search command 102 is output to the still image search section 2.

Then, the still image search unit 2 searches for the specified still image, and when the search is completed, the still image 1 frame video 1 is searched.
05 and returns a search completion status 103 to the control unit 3. Next, the control unit 3 turns off the video switching command 108 to the video switching unit 6, outputs the video output from the still image search unit 2 to the outside as it is, and also outputs the video to the outside/steno, is the search completion notification 104
Returns and terminates the normal search operation.

Next, the external system side sends the video record 1 to the control unit 3.
When a search request 101 for a specific still image registered in section G is generated, the control section 3 compares the storage address and the search request address, and since they match, the control section 3 sends a request to the video switching section etc. Turn on the video switching command 108, output the video from the video storage unit 4 to the outside (107), and immediately send a search completion notification 10 to the external system.
4 is returned, and the specific still image search operation is ended.

By the above-described operation, the search time for the still image for which search requests are most requested is greatly reduced, and the response performance of the system is improved.

Note that in the above embodiment, only one frame of still images can be registered in the video storage unit, but depending on the operating form of the system, by applying a video storage unit that can register two frames or more of still images. It is thought that the response performance of the system will be further improved by being able to register several frequently requested still images in the video storage unit in advance.

Effect of the invention The following effects can be expected from the present invention.

Generally, in a still image search system as shown in Figure 3, when requesting a still image from a terminal, it is possible to enter the address of the desired still image directly from the terminal keyboard, but with this method, 15,000 still images can be requested. It is necessary to prepare something like an address-still image information correspondence table in which the contents of all the still images are written, and the user must search for the address of the desired still image from the correspondence table, which is not practical at all. do not have. Therefore, as a general usage method, there is a tree search method as shown in FIG. Figure 7 is an example of providing overseas travel information.The user first requests both sides of the large menu, looks at that screen, then requests the medium menu by number, and gradually moves on to the desired purpose. As you narrow down your search, you can finally view still image information about your desired destination.

In such a case, it is likely that the search request for the still image of the large item menu will be the largest, so if you register the still image A1 of the large item menu as a specific still image, you will be able to search the large item menu. Since the time is greatly reduced, the average response time of the system is greatly improved. Furthermore, if the same still image file also contains information on domestic travel information, there will be two still images in the main menu, one for overseas and one for domestic. Depending on the user group, the most frequently requested large item menus can be set as specific still images and can be changed to offline mode at any time. In addition, by not performing a disk search for the 11 still images for which search requests are most frequently requested, the load on the still image disk device is greatly reduced, which has the effect of lowering the failure rate of the device and extending its life.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a conventional still image tisf device, FIG. 2 is a diagram of a still image recording tisf board, FIG. 3 is a configuration diagram of a still image search system, and FIG. 4 is an embodiment of the present invention. FIG. 5 is an explanatory diagram of the operation of the still image tisf device 1 according to the present invention when it is online, FIG. 6 is an explanatory diagram of the operation of the still image tisf device 6 when it is online, and FIG.
The figure is a diagram showing an example of tree search in a still image search system. 1. Still image recording section, 2. Still image search section, 3.
...Control unit, 4...Video storage unit, 5...
-Operation panel, 6...Video switching unit.

Claims (1)

[Claims] A means for recording and storing still images, a means for searching for a specific still image in the recording section and outputting the video, a control section for controlling the interface and search with the outside, and separate from the recording section. a video storage section that stores at least one still image frame; and an address storage section that stores seven traces in the recording section of the specific still image, and records the specific still image in the video storage section off-line. At the time of online search, the address requested by the control unit is compared with the held address, and if the address is the same, the still image disc is not searched and the video record 1. A still image disc device characterized in that information in part r5 is immediately outputted as still image information of a still image disc.