JPS62270026A - Card-like optical information recording medium and its optical information recording and reproducing device - Google Patents

Abstract

PURPOSE:To record and reproduce information even if a card-like optical information recording medium reciprocatingly moves and to improve hourly efficiency by forming a discrimination marker that can decide recording and reproducing directions at adjacent tracks. CONSTITUTION:An optical card 5 is supported in the prescribed position of a supporting table 6, and reciplocatingly moves in the longitudinal direction of the card-like optical information recording medium 5 by a conveyance mechanism 7. A mobile mechanism 9 can move an optical pickup 8 in the shorter direction of the optical card 5. It is assumed that the case where the conveyance mechanism 7 moves the optical card 5 from left to right is a positive direction and the case when the mechanism 7 moves from right to left conversely is a negative direction. The mark 4 discriminating the formed direction on each track displays recording and reproducing actions when there is a pattern given to the n-th track and when the medium 5 moves in the positive direction.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a card-shaped optical information recording medium capable of optically recording and reproducing information, and an optical information recording and reproducing apparatus thereof.

(Technical background of the invention and its problems) Card-shaped information recording media have traditionally been used in a wide range of applications such as cash cards and credit cards due to their ease of handling and storage, but most of them are magnetic recording media. Since it used a medium, the amount of information recorded was small.

In recent years, with the increasing use of information, it has been desired to dramatically increase the capacity of recorded information. Against this background, card-shaped optical information recording media using write-once optical information recording media are emerging, but compared to disc-shaped optical information recording media, information management during recording and reproduction due to the difference in shape is difficult. It wasn't good enough. That is, in a disc-shaped optical information recording medium, the tracks are formed in a concentric or spiral shape, and information is recorded or reproduced on each track in a direction opposite to the direction in which the disc rotates. In a card-shaped optical information recording medium, since the tracks are formed in a straight line, recording or reproduction is performed by moving the recording medium in parallel along the tracks.

Normally, information is recorded on or reproduced from each track provided on this disk-shaped optical information recording medium only during driving in one direction (outward path). This is because when recording is performed during driving in two directions (forward and backward), when reproducing this recorded information, it must be reproduced in the same direction as when it was recorded, and it is extremely difficult to control this. This is because it is a rotation. However, performing recording and reproducing only on the outward path as described above means that recording and reproducing cannot be performed during the return path, which has the disadvantage that recording and reproducing efficiency is extremely low.

In addition, in order to compensate for this drawback, in normal devices, the driving speed when recording is made different from the speed when not recording to shorten the return time, but if the driving speed is different, Conventional card-shaped optical information recording media have had various problems, such as the need for a separate and complicated device for tightening.

[Purpose of the invention]

An object of the present invention is to provide a card-shaped optical information recording medium and an information recording/reproducing apparatus thereof, which can increase the versatility of the card-shaped optical information recording medium and efficiently record and reproduce information. be.

[Summary of the invention]

The present invention provides a card-shaped optical information recording medium in which a mark is formed near the end of each track to determine from which direction the track is recorded or reproduced, and the card-shaped optical information recording medium moves back and forth. control so that information is recorded or reproduced in a track that corresponds to the moving direction of the track, and a mark is formed on adjacent tracks to determine the direction in which the recording/reproducing direction is opposite to each other. This makes it possible to record or reproduce information even during the outward movement and #ji movement when the card-shaped optical information recording medium is continuously moving forward, thereby achieving an improvement in time efficiency.

〔Effect of the invention〕

In the card-shaped optical information recording medium according to the present invention, marks are formed in advance on both ends of the information recording area of each track to determine from which direction the information recording area is recorded or reproduced. In both the outward path and the fJl path during which the card-shaped optical information recording medium is moved in parallel along the track, a mark is formed on the track to determine the direction that corresponds to the moving direction of the card-shaped optical information recording medium. It has the effect of being able to record or reproduce information and efficiently record and reproduce information.

(Embodiment of the Invention) An embodiment of a card-shaped optical information recording medium and a method for recording and reproducing information according to the present invention will be described. FIG. It is a diagram showing the configuration. In this optical card, an optical information recording medium 1 is adhesively fixed on a card-like substrate 2.The optical information recording medium 1 has a track guide @ 3 along the longitudinal direction.
is provided, and a large number of tracks are formed in the lateral direction. Furthermore, marks 4 are formed near both ends of the track guide groove 3 to determine the direction in which the track is recorded or reproduced, which is a feature of this embodiment. This mark 4 will be explained in detail below.

FIG. 2 is a diagram showing the configuration of the mark 4 for determining this direction. From the (n-1)th track to the (n+2)th track
A truck is shown. The mark for determining the direction is formed in a mark area on the same straight line as the track guide groove after some track guide grooves are provided from the end of the optical information recording medium. The track guide groove portion left between the mark for determining the direction and the end of the optical information recording medium is provided for tracking the light beam emitted from the optical pickup, which will be explained later, to the track guide groove portion. It is something. The mark formed in the mark area for determining the direction is provided with a pattern indicating that the recording/reproducing direction is opposite to that of the adjacent track. That is, the same pattern 21 is given to the nth track and the (n+2)th track, and the same pattern 22 is given to the (n-1)th track and the (n+1)th track, but the same pattern 22 is given to the nth track and the (n+1)th track.
1) Tracks are given different patterns.

Following the mark area, an area for recording information is provided in which a track guide groove is formed. Moreover, a similar type to that shown in FIG. 2 is symmetrically formed near the other end of the optical information recording medium.

FIG. 3 is a diagram showing an information recording/reproducing mechanism using a card-shaped optical information recording medium according to the present invention. The optical card 5 is supported at a predetermined position on a card support table 6, and reciprocated in the longitudinal direction of the card-shaped optical information recording medium 5 by a card transport mechanism 7.

The optical pickup 8 can be moved in the lateral direction of the optical card 5 by an optical pickup moving mechanism 9 (for example, a linear motor). When the optical card 5 is moved from left to right in the figure by the card transport mechanism 7, it is called a positive direction, and when it is moved from right to left, it is called a negative direction.The mark formed on each track is the nth mark. The operation will be described below, assuming that recording and reproduction are performed when the card-shaped optical information recording medium 5 moves in the forward direction when the pattern is given to the track.

When information is already recorded up to the (n-1)th track on the optical card 5 and information is to be recorded on the nth track, the card transport mechanism 7 is continuously reciprocating and the optical pickup 8 is The optical pickup moving mechanism 9 moves the optical card 5 in the lateral direction, that is, in the direction orthogonal to each track.

Each time the optical pickup 8 crosses a track, it detects a high frequency signal corresponding to an information signal already recorded in the information recording area, determines that recording has been completed, and instructs the optical pickup moving mechanism 9 to continue moving.

When the optical pickup 8 reaches the nth track, the high frequency signal corresponding to the information signal is not detected, and it is determined that the information recording area is unrecorded, and the optical pickup moving mechanism 9 is instructed to stop. At this time, if the card-shaped optical information recording medium 5 is moving in the negative direction by the card transport mechanism 7, it will reach the mark area provided at the right end of the optical card 5 and the optical pickup 8 will detect a mark for determining the direction. do. It is determined that the mark for determining the direction formed on the n-th track is an instruction to perform recording when the card transport mechanism 7 moves in the forward direction, and the optical pickup 8 is maintained on the current track. When the rightmost end of the optical card 5 is reached, the card transport mechanism 7 reverses from moving in the negative direction to moving in the positive direction, and again detects and judges the mark provided at the right end of the optical card 5 for determining the direction. . This time, the card movement direction matches the direction indicated by the mark for determining the direction, and information is recorded after the mark area is completed.

When a series of related recording information cannot be recorded in the information recording area of the n-th track, the optical pickup 8 detects the mark formed on the left end of the n-th track to determine the direction, and then the optical pickup 8 moves to the optical pickup moving mechanism. 9 by the (n+1
) is moved to the track. The card transport mechanism 7 reverses the movement of the optical card 5 from the positive direction to the negative direction again, and the optical pickup 8 detects the mark for determining the direction provided at the left end of the (n+1)th track. ) It is determined that the rack is the track on which recording is to be performed when the optical card 5 moves in the negative direction, and the information recorded on the ff5n track is continued to be recorded.

Note that the present invention is not limited to the above embodiments,
For example, if the direction of the mark area provided on the n-th track where you want to perform recording or playback is opposite to the driving direction, the direction of the mark area of the n-th track is Various modifications can be made without departing from the gist of the present invention, such as the optical pickup 8 may be driven to a matching position, and all such modifications are included in the present invention.

As explained above using the example of the control method during recording, by forming marks on each track to determine the direction of recording/reproducing, the outward path and direction when the optical card is reciprocated by the card transport mechanism are Information can be continuously recorded and reproduced during any period of the return trip, making recording and reproduction effective at double the speed of recording and reproduction in the same direction without changing the speed of the card transport mechanism. can be done. Furthermore, by providing the mark areas on the left and right sides of the information area, erroneous recording and reproduction of information will not occur at all, so to speak, the mark areas on the left and right protect the information area.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing the formation position of a mark for determining the direction of recording and reproduction formed on a card-shaped optical information recording medium according to the present invention and the structure of the card-shaped optical information recording medium; FIG. 2 is an enlarged view of the vicinity of the left end of the card-shaped optical information recording medium shown in FIG. 1, and FIG. 3 is a perspective view showing the information recording/reproducing mechanism of the card-shaped optical information recording medium according to the present invention. be. 1... Optical information recording medium 2... Card-shaped substrate 3.
... Track guide groove 4 ... Mark for determining direction 5 ... Card-shaped optical information recording medium according to the present invention 6 ...
Card support table 7...Card transport machine 11I8...Optical pickup 9
...Optical Pickup Transmission System 1 Agent Patent Attorney Noriyuki Chika Yudo Kikuo Takehana

Claims (4)

[Claims] (1) In a card-shaped information recording medium that is composed of a plurality of tracks and in which information is optically recorded and reproduced, each track has an area in which information is recorded, and the recording areas in the above-mentioned areas are located at both ends of this area. Alternatively, a card-shaped optical information recording medium characterized by forming an area for determining the direction of reproduction. (2) The area for determining the direction is formed by a mark indicating that the direction of recording or reproduction is opposite to that of the tracks provided adjacent to each of the tracks. A card-shaped optical information recording medium according to claim 1. (3) A card shape according to claim 2, characterized in that the area for determining the direction is provided in a part of a track guide groove provided for recording the information at a correct position. Optical information recording medium. (4) In an optical information recording and reproducing device that optically records and reproduces information on a card-shaped optical information recording medium composed of a plurality of tracks, in order to select a predetermined track of the card-shaped optical information recording medium, means for driving in a direction perpendicular to the track; and means for determining the recording/reproducing direction provided on the card-shaped optical information recording medium prior to recording/reproducing information on the predetermined track selected by the means; Optical information comprising means for moving the card-shaped optical information recording medium in parallel along the track in the recording/reproducing direction determined by this means, and means for recording/reproducing the information by the parallel movement by this means. Recording and playback device.