JPS62245588A - Picture file system - Google Patents

Abstract

PURPOSE:To take out a retrieved picture in keeping high picture quality by retrieving an analog picture, selecting a desired picture and outputting a corresponding digital picture from a digital picture part. CONSTITUTION:An analog disk file 1 has an optional video signal retrieved by a controller 2 and observed by a monitor TV3. In the ten sets of the digital disk files 4-6, the same video signal as the file 1 is digitally recorded. a recording picture corresponding to the display picture of the TV 3 is reproduced from the files 4-6, transferred to a frame memory 9 and reproduced in a monitor TV 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an image file system using an optical disk.

2. Description of the Related Art In recent years, image files using optical disks have been developed and are used for various purposes.

An example of an image file using the above-mentioned conventional optical disc will be described below with reference to the drawings. FIG. 4 shows an optical disc, in which a recording track 31 is formed on a recording band 3o, and this recording track is usually configured in a spiral shape.

In one recording track, address signals called addresses are address A32. The address is added as shown in address B33, and this address is, for example, a 6-digit number (Oooo
1 to 24000).

A video signal is recorded as an analog signal on the recording track of the optical disc configured as described above, and when searching,
This is done by detecting the address signal. (For example, see 1 Television Society Technical Report AV Disk File System, published on March 19, 1985, QPT208.) Problems to be Solved by the Invention However, with the above configuration, video signals cannot be processed as analog signals. However, the image quality is limited, and dropouts may occur due to small defects on the disc, making it insufficient for high-precision image files.On the other hand, video signals are digitized and recorded on the optical discs mentioned above. If you do so, the dropout problem will disappear and the image quality will improve, but the number of recordable images will be limited.
Moreover, real-time video signals cannot be handled, and it takes a long time to reproduce images during a search, which is very inconvenient.

In view of the above problems, the present invention provides a new image file system that has a high search speed as an image file and can also handle highly accurate digitized images at the same time.

Means for Solving the Problems In order to solve the above problems, the image file system of the present invention includes an analog image section that records images in the form of analog signals, and a digitized image section that records images in the form of digital signals. The analog image section is used for image retrieval, and the digitized image is retrieved from the digitized image section based on the address number of the searched image. .

“Function” The present invention is convenient for searching and can retrieve searched images with high image quality due to the above-described configuration.

Embodiment Hereinafter, an image file system according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows an image file system in a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an analog disk file that can record and reproduce video signals in real time. 2 is a controller, and 3 is a monitor television.

4 to 6 are digital disk files, which can record and reproduce digitized video signals. 7 is monitor TV, 8
is a video printer, and 9 is a frame memory.

The operation of the image file system configured as described above will be explained.

Analog disk file 1 has 20,000 video signals recorded on one track, and controller 2
to search for any video signal and monitor TV 3.
You can observe the reproduced image with . On the other hand, the same video signal as analog disk file 1 is digitized and recorded in ten digital disk files No. 4 to No. 6 (No. 3 to No. 9 are not shown). That is, 2000 digitized video signals are recorded on one digital disc. When the analog disk file 1 is searched by the controller 2 and a desired image is obtained on the monitor television 3, a command is given to the controller 2. Next, the digitalized and recorded image corresponding to the image searched from the controller 2 is played back from 4 to 6 digital disk files (one of the 10 disks), transferred to the frame memory 9, and the image is Playback on monitor TV 7. Moreover, if necessary, it can be obtained in the form of a notebook using the printer 8.

As described above, according to this embodiment, it is possible to search at high speed using an analog disk file and to increase the number of high-quality images from a digital disk file.

61.-1 FIG. 2 is a block diagram of an image file system showing a second embodiment of the present invention, and FIG. 3 is a block diagram of an optical disk used in the image file system. In FIG. 3, reference numeral 3o denotes an optical disk, on which an analog image is recorded on the outer circumference of the optical disk 31, and an image corresponding to the analog image is digitized and recorded on the inner circumference of the optical disk 32.

Next, the optical disc 3o is placed on the optical disc file 20 shown in FIG. In FIG. 2, 20 is an optical disk file device, 21 is a controller that controls the optical disk file device 2o, 22 is an analog image output, 23 is a digitized image output, 24 is an A/D converter, and 25 is a switch. . 26 is a digital memory, 27 is a D/A converter, and 28 is an image monitor television.

In the image file system configured as described above, first, the controller 21 is operated to operate the optical disk file device 20, and a desired image is searched from the analog image section 31. Since one analog image can be recorded per revolution of the optical disc 30, images can be checked at a speed of 30 images (maximum) per second. On the other hand, the same image is digitized and recorded in the digitized image section 32. Since this digitized image consumes 10 tracks of the optical disk to form one image, it is not possible to check the image at high speed as described in ``2'', and the digitized image output 23 is 1 of the image is transferred to the digital memory 26 via the
Only after a number of takes have been accumulated can real-time images be played back. This is D/A converter 27
This is done by connecting the output of the monitor to the monitor television 28.

In this way, first, the analog image portion is reproduced, a desired image is searched for, the image is digitized by the A/D converter 24, and then stored in the digital memory 26. Next, by issuing a command from the controller 21, the same image as the searched image is read out from the digitized image section 32,
The read digitized image output 23 is sent to the switch P)
25, the data is transferred to a digital memory 26, and displayed on a monitor television 28 by a D/A converter 27.

As described above, by searching for an analog image at high speed using an optical disc having both an analog image signal and a digitized image signal, and then obtaining the same image as the searched image from the digitized image signal section, It is possible to simultaneously achieve high-speed search and high-precision images.

In the second embodiment, the analog image area was provided on the outer circumference of the optical disk, but the quality of the analog image is better if it is provided on the outer circumference of the optical disk because the recording wavelength becomes longer.

Effects of the Invention As described above, according to the present invention, the analog image section and the digitized image section are provided separately on one disk or on separate disks, and the analog image section is searched to obtain a desired image. After selecting an image, the digitized image corresponding to the analog image is output from the digitized image section, making it very easy to use and satisfying both high-speed image retrieval and high-precision image output. A convenient image file system can be provided.

[Brief explanation of drawings]

1 is a block diagram of an image file system according to a first embodiment of the present invention, FIG. 2 is a block diagram of an image file register according to a second embodiment of the present invention, and FIG. 3 is a block diagram of an image file system according to a second embodiment of the present invention. FIG. 4 is a front view of a conventional analog optical disc used in the image file system shown in FIG.

Claims (1)

[Claims] An optical disc is divided into an analog image section in which image information is recorded in the form of an analog signal, and a digitized image section in which the image information is digitized and recorded in the form of a digital signal.The analog image section is reproduced when searching. and
An image file system characterized in that, after a desired image is selected, the selected image is taken out from the digitized image section.