JPH022462A - Method for reproducing electronic file system - Google Patents

Abstract

PURPOSE:To efficiently operate a file system by allowing a file controller to individually reproduce the image data of a requested record after transferring the control information of the record requested to a data processor and then temporarily store the reproduced image in a buffer. CONSTITUTION:The file controller 2 reproduces the requested control information, transfers the reproduced information to the data processor 1 and discriminates the page pointer of the control information by a page pointer discriminating means 2a. The corresponding image data are reproduced and the reproduced data are temporarily stored in the buffer. When an image data transfer request is outputted from the data processor 1, the image data read out from the buffer are transferred. Thereby, the data processor 1 can receive the requested image data within a short time as compared to an ordinary time.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electronic file system in which image data such as documents and drawings is edited and recorded on a medium such as an optical disk and then searched and used. It concerns how to efficiently play back files from files.

The data reproduction system of the conventional electronic file system is classified as shown in FIG. Reference numeral 1 denotes a data processing device such as a host computer or a workstation that searches and uses file data, and a file controller 2 is located below this.

The file controller 2 controls, for example, an optical disk device 3. The optical disk device 3 performs an operation for reproducing data from an optical disk 4, which is a file storage medium.

Generally, a document file organized on the optical disk 4 has a structure as shown in FIGS. 5 and 6. The storage area of the optical disc 4 is divided into a register 5 and a physical area 6. Image data such as documents and drawings are recorded in the physical area 6. A large amount of image data is managed in units called documents (records). One document is defined as a collection of image data for multiple pages, and each document is assigned a consecutive document number, as well as a document name, author base,
The date of creation, date of registration, and several keywords and explanatory sentences representative of the document contents are assigned, and these are registered in the registry 5.
is recorded in the corresponding document number area. Furthermore, in each document number area in the register 5, a page pointer indicating the location where image data belonging to the document with that number is located is also recorded.

The data processing device 1 first requests the file controller 2 to reproduce management information by specifying a desired document number. Since the management information area for each document number in the register 5 is predetermined, the file controller 2 generates an address for the corresponding management information based on the specified document number, and gives the address to the optical disk device 3. Operate playback. The management information of the corresponding number is now reproduced from the optical disc 4 and transferred to the data processing device 1 via the file controller 2.

In the data processing device 1, after confirming the content by displaying the document name, keyword, explanatory text, etc. of the reproduced management information on the display, the contents of the document (
If the corresponding image data in the physical area 6 is required, a request to that effect is issued. At this time, the page pointer (address of the corresponding image data) in the management information is shown to the file controller 2 and a reproduction request is issued. In response to this, the file controller 2 controls the optical disk device 3,
Image data is reproduced from the corresponding address area of the optical disc 4 and transferred to the data processing device 1. The procedure of the reproduction processing explained above is summarized and shown in FIG.

Problems to be Solved by the Invention In the conventional reproduction method described above, when viewed from the data processing device 1, the following steps are taken: ■ Issue a reproduction request for management information of a certain document number;
■The receiver receives and confirms the management information, ■issues a request to reproduce the content (image data) of the document number, and ■receives the requested document image data. Here, there was a problem in that it took a considerable amount of time from issuing the request for ■ to completing receiving the request for ■. When extracting documents one after another from a file using the above operating procedure, work efficiency was extremely poor due to the playback waiting time between ■■.

This invention was made in order to solve the above-mentioned conventional problems, and its purpose is to shorten the playback waiting time from the data processing device side and to provide a playback method that enables efficient file system operation. Our goal is to provide the following.

Means for Solving the Problem Therefore, in the present invention, when the file controller receives a request to reproduce management information of a certain record (document in the previous example) from the data processing device, the file controller
In the previous example, the management information of the corresponding record is reproduced from the optical disk device) and transferred to the data processing device, and
According to the management information, the image data of the corresponding record is reproduced from the file and temporarily stored in the buffer, and when a request to reproduce the image data of the corresponding record is received from the data processing device, the corresponding data prepared in the buffer is The method is to transfer the data to the data processing device.

In the method of the present invention, when there is a request from the data processing device to reproduce the management information of a record in the file controller, after the data is reproduced and transferred, before a request to transfer the image data of the record is received. Then, the file controller independently starts playing the corresponding image data and temporarily stores it in the buffer. Although there are cases in which a request to reproduce the corresponding image data does not come from the data processing device, in general, a request to reproduce the contents (image data) often comes after the management information. Even if all the corresponding image data is not prepared in the buffer of the file controller when a request to play image data is received,
The earlier the playback is started, the shorter the waiting time of the data processing device is.

Embodiment As shown in FIG. 1, the reproduction system of the electronic file system is divided into a data processing device 1, a file controller 2, and an optical disk device 3, which is the same as in FIG. For example, if the document file to be
The structure shown in FIG. 6 and FIG. 6 is also the same as the conventional one.

In the present invention, the file controller 2 is provided with page pointer determination means 2a. This means 2a receives the document management information reproduced from the optical disc 4, reads a page pointer (see FIG. 6) from a predetermined area therein, and records the content (image data) of the document in which part of the optical disc 4. It is a data processing means that recognizes whether the address is

FIG. 2 summarizes and shows the regeneration method of the present invention.

The order of operations and processing in the data processing device 1 is the same as before: ■ Issue a request to reproduce the management information of a certain document number, ■ Receive and confirm the management information, ■ Confirm the contents of the document number (
③Receive the requested document image data.

The processing procedure of file controller 2 is different from the conventional one.
After reproducing the requested management information and transferring it to the data processing device 1, the means 2a determines the page pointer in the management information, starts reproducing the corresponding image data, and temporarily stores the data in a buffer. (2) When there is an image data transfer request from the data processing device 1, the read image data is transferred to the buffer.

When the data processing device 1 performs step (2) KS in this way, the file controller 2 proceeds to step (2) and starts reading the corresponding image data from the optical disc 4 into the buffer. Therefore, when the data processing device 1 proceeds from step (2) to step (2), it can receive the requested image data in a shorter time than in the past.

Effects of the Invention As is clear from the above explanation, in the present invention, after transferring the requested record management information to the data processing device, the file controller independently starts playing the image data of the corresponding record and stores it in the buffer. Since it is temporarily stored, when the data processing device requests the corresponding image data, it can be responded to immediately, and the waiting time for image data playback on the data processing device side is shortened.
This type of file system can be operated efficiently.

[Brief Description of the Drawings] Fig. 1 is a schematic diagram of an example of an electronic file system to which the present invention is applied, Fig. 2 is a flowchart of a reproduction method according to the present invention, and Fig. 3 is a schematic diagram of a conventional system. Figure 4 is a flowchart of the conventional reproduction method, Figures 5 and 6
The figure is a conceptual diagram showing an example of organization of document files. Figure 1 Name of agent Patent attorney Toshio Nakao and 1 other person Management Information Figure 1 Document Ikutama Risukan

Claims (1)

[Claims] A file in which image data of each record and management information of each record are recorded on a medium according to a predetermined organization method, a data processing device that handles the image data and management information of this file, and a data processing device that handles the image data and management information of this file; In an electronic file system comprising a file controller that reproduces required data from the file according to instructions and transfers it to the data processing device, the file controller receives a request to reproduce management information of a certain record from the data processing device. In this case, the management information of the corresponding record is reproduced from the file and transferred to the data processing device, and the image data of the corresponding record is reproduced from the file according to the management information and temporarily stored in a buffer, and the data processing A reproduction method in an electronic file system, characterized in that when a request for reproduction of image data of a corresponding record is received from a device, the corresponding data prepared in the buffer is transferred to the data processing device.