JPH03219486A - Data management system - Google Patents

Abstract

PURPOSE:To accelerate the retrieval of a data base by constructing a data file that data stored in the read-in area of a CD is taken as identification element on an auxiliary storage device. CONSTITUTION:A computer 101 always monitors a CD player 102 through an interface 104 and reads the TOC data in the CD by controlling the player 102 through the interface 104 when the CD is set on the player 102. Besides, the computer 101 extracts the PMIN, the PSEC and the PFRAME of a TOC data group and uses them as the CD identification element (the ID). Then, the computer 101 retrieves a file having the ID which coincides with the ID possessed at present by the computer 101 from the data base in the auxiliary storage device 103, converts it to the data having a proper type and outputs it to an output device 105.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a data management system for managing data on a CD set in a compact disc (hereinafter referred to as CD) system. The present invention relates to a data management system that manages data related to a set CD using data set as an identifier.

[Prior Art] Conventionally, in a CD system connected to a general-purpose computer,
The data recorded in the lead-in area of the set CD, that is, the TOC (table of
The TOC data of only the set CD is read and displayed when a CD is set in the system.Data regarding CDs that are not set is not managed.

Moreover, in the case of a music-only CD player, it has a small-scale data management system that partially utilizes a backup RAM.

[Problems to be Solved by the Invention] In the conventional data management system described above, the T.

C data is read when the CD is set in the system and is displayed as is, and has the disadvantage that the original data required by the user cannot be stored as a database and automatically searched and displayed.

In addition, music CD players also have small-scale data management systems as mentioned above, but they are only auxiliary in terms of how data is displayed and the amount of data to be managed. The drawback was that it was not possible to store such data as a database and automatically search and display it.

Therefore, an object of the present invention is to provide a data management system that can construct a database of unique current data regarding CDs.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention reads data recorded in the lead-in area of a compact disc set in a compact disc system,
a data reading means for extracting data; a creation means for creating a unique data file regarding the set compact disc on an auxiliary storage device connected to a computer using the extracted data as an identifier; The apparatus includes a search means for searching data specific to a compact disc set in the system, and an output means for outputting the searched data via an output device.

[Operation] In the data management system of the present invention, the reading means reads and extracts the data in the lead-in area of the CD set in the CD system, and creates a data file' (hereinafter referred to as database) having the extracted data as an identifier. a creation means for creating a CD on an auxiliary memory;
It is equipped with a search means for searching a database existing on an auxiliary storage device for data having the same identifier as the data, and an output means for visually displaying the searched data on an output device in an easy-to-understand manner. The data is stored and constructed as a data file.

[Example] Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a system configuration block diagram showing the present invention.

This system includes a computer 101, a compact disc player 102, an auxiliary storage device 103, an interface 104, and an output device 105.

The computer 101 is a compact disc player 10
2 via an interface 104 , receives and receives data from the compact disc player 102 , controls the auxiliary storage device 103 , and outputs the processed results to the output device 105 .

The compact disc player 102 is connected to the computer 1
Based on the control data from 01, data is read from the compact disk and output to the computer 101.

The auxiliary storage device 103 is composed of, for example, a magnetic disk device, and stores and retrieves data based on control from the computer 101.

The interface 104 is an interface for electrically connecting the computer 101 and the compact disc player 102.

The output device 105 is composed of, for example, a display, and displays and outputs the data processed by the computer 101.

Figure 2 shows the TOC data stored in the lead-in area of a compact disc.
This TOC data is stored for the number of tracks included in D.

In the data management system according to the present invention, among these data, PMIN and PSEC are used as an example.

The CD is determined using the three data sequences of PFRAME.

Next, we will explain the operation of this system in Figure 1, Figure 2, and 6- This will be explained using Figures 3 and 4.

First, the computer 101 always has an interface 10
4, the compact disc player 102 is monitored, and when a CD is set in the compact disc player 102, the TOC data stored in the lead-in area of the set CD is monitored via the interface 104. The compact disc player 102 is controlled and read (STEPI).

The computer 101 reads PM of the TOC data group.
IN, PSEC, and PFRAME are each extracted, and the number of tracks stored on each CD ranges from a minimum of 1 track to a maximum of 99 tracks, and the length of each track ranges from a minimum of 2 seconds to a maximum of about 74 minutes, and 1 second. Since PMI consists of 75 frames, it is extremely unlikely that tracks of the same length will be arranged in the same order in the same number of tracks.
The sequence of N, PSEC, and PFRAME is used as an identifier (ID) unique to the CD (STEP 2).

The computer 101 that created the ID from the TOC of the set CD selects an ID that matches the ID it currently has from an arbitrary type of database in the auxiliary storage device 103.
Search for files with (STEP 3).

The database referred to here is something that manages, for example, titles, 9 song names, etc., and if a matching ID is not found here, a new file is created in the database using the current ID as the search key. (ST
EP4).

If a file with a matching ID is found here, the computer 101 processes the data appropriately, converts the result into data of a type suitable for the output device 105, and outputs the data to the output device 105 (STEP 5). ).

Furthermore, since the database used in the data management system of the present invention can be freely operated on the computer 101,
It can also be used in other applications.

[Effects of the Invention] As explained above, the data management system of the present invention supports a data file whose identifier is data stored in the lead-in area of a compact disc when using a compact disc player connected to a computer. By building it on a storage device, it is possible to automatically identify the set compact disc and automatically search and display data related to that compact disc.

Furthermore, by using a computer and an auxiliary storage device, there are almost no restrictions on the amount, type, or content of data stored in the database, and the database can be constructed and used relatively freely.

Furthermore, data (PM
Instead of performing an exact match on the data (PMIN, PSEC, PFRAME, etc.)
) can also be used to speed up database searches.

[Brief explanation of drawings]

9- Figure 1 is a system configuration block diagram showing the data management system of the present invention, Figure 2 is a diagram showing the format of TOC data stored in the lead-in area of a compact disc, and Figure 3 is a diagram showing the data management system of the present invention. A flowchart explaining the operation of the management system, FIG. 4 is a diagram showing an example of a display output by the data management system of the present invention. 101... Computer, 102... Compact disc player, 103...
- Auxiliary storage device, 104... Interface (I/F), 105.
...Output device.

Claims (1)

[Scope of Claims] Data reading means for reading and extracting data recorded in a lead-in area of a compact disc set in a compact disc system; creating means for creating a unique data file on an auxiliary storage device connected to a computer; retrieval means for retrieving data unique to the compact disc set in the compact disc system from the data file; 1. A data management system comprising: an output means for outputting through an output device.