KR970011811B1 - Apparatus for editing data reproduction order of opto-magnetic disk - Google Patents

Abstract

Disclosed is an apparatus to edit replay order for an opto-magnetic disk. The apparatus comprises a mode setter(10), a controller(11), a memory(21a) and an encoder/decoder(14). The mode setter(10) sets an edit mode or a write/replay mode. The controller(11) generates an edit data for replay order of the opto-magnetic disk(D) according to the user's input data under the edit mode setted by the mode setter(10). The memory(21a) stores the edit data from the controller(11). The encoder/decoder(14) encodes the stored data in the memory(21a) to be stored by opto-magnetic heads(17, 18a), and encodes the read data from the opto-magnetic disk(D). Thereby, user can edit replay order with convenience.

Description

Playback order editing device for magneto-optical discs

1 is a diagram showing the configuration of a reproduction order editing apparatus for a magneto-optical disc according to the present invention.

2 is a diagram for explaining a reproduction order of information edited by the reproduction order editing apparatus of the magneto-optical disc according to the present invention and recorded in the UTOC area.

3 (a) and 3 (b) are diagrams for explaining a reproduction order editing process of the magneto-optical disc according to the present invention.

* Explanation of symbols for main parts of the drawings

D: Magneto-optical disc 10: Mode setting unit

11 control unit 12 data compression / extension processing unit

13 analog-digital conversion unit 14 decoding / encoding unit

15: Servo circuit 16: Spindle motor

17 optical pickup device 18 magnetic head drive unit

18a: magnetic head 19: RF amplifier

20: digital-to-analog converter 21: memory

21a: TOC memory

The present invention relates to an apparatus for editing a reproduction order of a magneto-optical disc. More particularly, the present invention relates to a reproducing sequence of information (particularly, flexible information) recorded on an magneto-optical disc capable of repeatedly recording / reproducing information. The present invention relates to a reproduction order editing apparatus for a magneto-optical disc which records information in a definition area (UTOC area) and allows information to be reproduced according to the reproduction order recorded during reproduction of the magneto-optical disc.

In general, in the magneto-optical disc reproducing apparatus which handles the magneto-optical disc, which is noted as an information recording medium capable of repetitive recording and reproducing of information, the laser beam of a predetermined level output from the laser light source is irradiated onto the information recording surface to heat the magnetism. While the information is recorded by magnetizing the information recording surface by the head, in the case of reading out the information recorded on the information recording surface, the information magnetized and recorded by the magnetic head while irradiating the information recording surface with the laser beam at a lower level than when recording the information. Will be read.

Therefore, when a magneto-optical disc is produced in such a state that a large number of pieces of flexible information are recorded on such a magneto-optical disc, the magneto-optical disc playback apparatus for handling the magneto-optical disc designates the desired flexible information among the pieces of the flexible information contained on the magneto-optical disc. When receiving the data, the TOC area (including the UTOC area) in which the overall control information of the magneto-optical disk is recorded is accessed and reproduced by accessing the reproduction position of the stored flexible information.

By the way, a large number of song information is serially recorded on most magneto-optical discs, and among the plurality of song informations, songs that the user cares about are often limited, so it is cumbersome to select a song song from among the song information. Selection work is required.

Therefore, at present, a method of automatically accumulating the reproduction frequency of a plurality of pieces of flexible information recorded on a magneto-optical disc and recording the reproduction order in the order of high-frequency reproduction in the UTOC area defined in the magneto-optical disc is proposed. In such a scheme, however, it is possible to control the reproduction order for information with high reproduction frequency, while disadvantageous in that the reproduction order is not very efficient for the information having a similar or not high reproduction frequency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described state of the art. The present invention arbitrarily edits and reproduces a plurality of pieces of information in a UTOC area defined on an optical magnetic disk capable of recording / reproducing repetitive information. It is an object of the present invention to provide a reproduction order editing apparatus for a magneto-optical disc which allows reproduction to be performed based on the edited reproduction order of the magnetic disc.

In order to achieve the above object, according to a preferred embodiment of the present invention, there is provided a magneto-optical disc reproducing apparatus for handling an magneto-optical disc in which information is repeatedly recorded / reproduced by the magneto-optical head in the state of constant rotation by the spindle motor. And a mode setting unit capable of setting an edit mode and a recording / reproducing mode for editing the reproduction order for the plurality of pieces of information, and a reproduction order editing data of information recorded on the magneto-optical disc received in the mode setting unit. Control means for generating, memory means for recording the information reproduction order editing data of the magneto-optical disc generated by the control means, and encoding reproduction order editing data of the information stored in the memory means as record information for the magneto-optical disc. Encoding means for processing, decoding information read in the reproduction mode set by the mode setting unit; The reproduction order editing apparatus of the magneto-optical disk that is configured is provided, including a coding means.

Preferably, the reproduction order editing data for the information on the magneto-optical disc is recorded in the UTOC area of the magneto-optical disc under the control of the control means.

According to the reproduction order editing apparatus for a magneto-optical disc according to the present invention configured as described above, the user can arbitrarily edit and record the reproduction order for a plurality of pieces of information recorded on the magneto-optical disc in which recording / reproducing of a plurality of pieces of information is repeatedly performed. During the reproduction of the magneto-optical disc, since the sequential reproduction of the information is performed according to the edited playback order, frequent selection of the songcheong songs can be omitted.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

1 is a diagram showing an apparatus for editing a reproduction order of a magneto-optical disk according to the present invention, wherein reference numeral D denotes an magneto-optical disk which is an information recording medium capable of repeatedly recording / reproducing information, and 10 denotes the magneto-optical disk ( A mode setting section capable of setting an operation mode (for example, a recording / reproducing mode of information or a reproduction order editing mode according to the present invention) of the magneto-optical disc reproducing apparatus for recording or reproducing information for D).

11 denotes a control unit for controlling the overall operation of the magneto-optical disc playback system according to the operation mode selected by the mode setting unit 10. The control unit 11 reproduces the information recorded on the magneto-optical disc D. A display device (not shown) that displays the current operation mode, the song number, and, if necessary, the sequence name during playback or editing, is connected.

Therefore, in the reproduction order editing mode of the magneto-optical disc D according to the present invention, the current information reproduction order is displayed on the display device under the control of the control unit 11, and each information for editing the information reproduction order is displayed. The playback order input is displayed, or playback status information (song number, song name, etc.) of the magneto-optical disc D is displayed during playback.

12, the recording information digitally converted by the analog-digital conversion unit (ADC) 13 under the control of the control unit 11 while the recording mode is set by the mode setting unit 10 is compressed by a predetermined data compression algorithm. Or a data compression / extension processing section for decoding and outputting the compressed information reproduced from the magneto-optical disc D in a reproducing mode by a predetermined data extension algorithm, and 14 denotes the data compression / expansion under the control of the control unit 11. For encoding the recording information compressed by the decompression processing section 12 or for recording the reproduction order editing data in the control section 11 for editing the reproduction order for the magneto-optical disk D on the magneto-optical disk D. A decoding / encoding unit which encodes as information or decodes information read from the magneto-optical disk D is shown.

15 is a laser beam of the optical pickup device 17 for servo control of the spindle motor 16 for constant-speed rotational driving of the magneto-optical disk D and for recording / reproducing of information on the magneto-optical disk D. Represents a servo circuit for output control of the controller, and 18 denotes information recording or reproducing in a state controlled by the servo circuit 15 for the magneto-optical disk D driven at a constant speed by the spindle motor 10. A magnetic head driver for driving the magnetic head 18a, and a numeral 20 denotes a digital-analog converter (DAC) for analog-converting the information decompressed by the data compression / extension processor 12 in the reproduction mode. . 21 denotes a memory in which information to be recorded on the magneto-optical disk D is stored after being compressed by the data compression / extension processing unit 12 or encoded or decoded by the decoding / encoding unit 14. The memory 21 stores the TOC information recorded on the magneto-optical disk D, and the TOC memory for storing the reproduction order editing data of the magneto-optical disk D, which is executed under the control of the control unit 11. (21a) is included.

According to the reproducing sequence editing apparatus for a magneto-optical disc according to the present invention configured as described above, the mode setting unit is provided in a state in which a magneto-optical disc D on which a plurality of unit information such as a song is recorded is mounted on the magneto-optical disc reproducing system. When the information recording mode is set by (10), the control unit 11 controls the servo circuit 15 to drive the spindle motor 16 at constant speed so that the magneto-optical disk D rotates at a constant speed, while the optical The pickup device 17 is driven to cause the laser beam to emit to the information recording position of the magneto-optical disk D. In addition, the control unit 11 controls the data compression / decompression processing unit 12 to compress the recording information Din which is digitally converted by the analog-digital conversion unit 13 by a predetermined algorithm, The decoder / encoder 14 operating under the control of the control unit 11 is encoded to be suitable for the data format of the magneto-optical disk D, and applied to the magnetic head driver 18, whereby the magnetic head driver 18 In FIG. 1, the magnetic head 18a is driven to a level necessary for recording information, thereby recording information.

On the other hand, when the information reproducing mode is set by the mode setting unit 10 while the magneto-optical disc D on which the unit information is recorded is mounted in the magneto-optical disc reproducing system, the control unit 11 controls the servo. By controlling the circuit 15 to drive the spindle motor 16 at constant speed, the magneto-optical disk D rotates at a constant speed, and the optical pickup device 17 is driven to drive the information recording position of the magneto-optical disk D. Radiation operation of the laser beam is to be made. Thereafter, the optical pickup device 17 reads out the disk information (TOC information) recorded in the TOC area of the magneto-optical disk D, and the read TOC information mediates the RF amplifier 19. Is applied to the decoding / encoding unit 14, and the TOC information decoded by the decoding / encoding unit 14 is stored in the TOC memory 21a as control information of the magneto-optical disk D. Subsequently, when selection is performed by the user, the control unit 11 performs a position (track) search for the selected information with reference to TOC information of the corresponding magneto-optical disk D stored in the TOC memory 21a. The servo circuit 15 is controlled to position the magneto-optical heads 17 and 18a so that the selected information is reproduced. Therefore, the RF signal read from the magneto-optical disk D is amplified by the RF amplifier 19 and then applied to the decoding / encoding unit 14 to be decoded, and the decoded information detection signal is decompressed / extended. It is applied to the processing unit 12, analyzed based on a predetermined data extension algorithm, and then analog-processed by the digital-analog conversion unit 20 and output.

Here, the TOC area defined in the magneto-optical disc D includes a UTOC area, and the UTOC area includes a header data area and a data area as shown in FIG. The plurality of pieces of flexible information recorded in D) are pointer designation areas for designating pointers (P-TNO1-P-TNO255) of the first to Nth flexible information in the data area, and each flexible designation designated by the pointer designation areas. The start address and the end address of the information are defined by the area in which it is recorded. That is, for the first flexible information, the pointer P-TON1 is designated in the pointer designation area, and the start address and the end address for the first flexible information specified in the pointer P-TON1 are defined. The recording / reproducing of the information is executed under the control of the control unit 11 based on the ending address.

According to the present invention, the playback order for a plurality of pieces of flexible information of the magneto-optical disk (D) is edited in such a manner that the user replaces the pointer for each piece of flexible information designated in the pointer designation area in an arbitrary order. First, a user manipulates, for example, an 'edit key (not shown)' which is installed on the exterior of the magneto-optical disc playback device to edit the reproduction order of the magneto-optical disc D and constitutes the mode setting unit 10. In this case, the control unit 11 controls the display device to display the reproduction order editing mode (for example, 'edit') on the display device, and the number of songs and song names of the plurality of pieces of flexible information recorded on the magneto-optical disk D. Will be controlled to be displayed.

In that state, the user can use the 10-key and the Enter key provided in the magneto-optical disc playback apparatus to replace the song number of the favorite song as illustrated in FIG. 3 (a) or (b). Upon input, the control unit 11 stores the edited data of the playback order in the TOC memory 21a, and then decodes / plays the playback order edited data stored in the TOC memory 21a when the playback order edit mode is completed. The encoding unit 14 controls to be encoded so as to conform to the information recording pattern of the magneto-optical disk D. As shown in FIG. Therefore, the encoded reproduction order edit data is recorded by the magneto-optic heads 17 and 18a with the pointers to the respective flexible information replaced in the UTOC area of the corresponding magneto-optical disc D shown in FIG. do.

In the reproduction of the magneto-optical disc D in which the reproduction order is recorded as described above, the flexible information is reproduced as described above in the reproduction order replaced for each flexible information in the UTOC area.

As described above, according to the apparatus for editing a reproduction order of a magneto-optical disc, the user may arbitrarily replace a reproduction order for a plurality of pieces of information recorded on the magneto-optical disc on which recording / reproducing of information is repeatedly performed. Frequent music selection operations can be omitted by recording in the UTOC area and automatically reproducing the reproduction order according to the reproduction frequency of the magneto-optical disc.

Claims (2)

In the magneto-optical disc reproducing apparatus which handles the magneto-optical disc (D) in which information is repeatedly recorded / reproduced by the magneto-optical heads (17, 18a) in the state of constant rotation by the spindle motor (16), the plurality of the A mode setting section 10 capable of setting an edit mode and a recording / playback mode for editing the playback order for information, and editing the playback order of the magneto-optical disc D set by the mode setting section 10; Control means (11) for receiving a reproduction order editing input input by a user under a mode and generating reproduction order editing data of recording information on the magneto-optical disc (D); the optical generated by the control means (11) Encoding processing of the data playback order editing data of the magnetic disk D is recorded as memory information 21a and the playback order editing data of the information stored in the memory means 21a as recording information for the magneto-optical disk D. The light by Encoding / decoding means for recording by means of the heads 17 and 18a and decoding information read out from the magneto-optical disc D in a reproduction order in the reproduction mode set by the mode setting unit 10; And a playback order editing apparatus for a magneto-optical disc, comprising (14). The optical recording medium according to claim 1, wherein the reproduction order editing for the magneto-optical disc (D) is performed by replacing pointers to the plurality of pieces of flexible information recorded in the UTOC area of the magneto-optical disc (D). Device for editing the playback order of magnetic disks.