JPS6353723A - Device for handling optical recording medium - Google Patents

Abstract

PURPOSE:To improve recording efficiency and accuracy of data by providing an optical recording means for recording the data of an optical recording part corresponding to the position data of recording in a magnetic recording part at the time of recording the data and means for updating the position data of a magnetic recording part after recording of the data. CONSTITUTION:A control circuit 23 reads out the content of magnetic stripes 17 of an optical memory card 10 and controls a laser driver 25 and a conveyance control part 26 to access an optical head part 21 in compliance with the track number corresponding to the content of the magnetic stripes 17 when the data to be recorded is supplied from a host computer. A laser driver 25 drives a semiconductor laser oscillator to record the data according to the data from the host computer when the track searched by the reflected light from a tracking line 13 by the optical head part 21 and the track number coincide with each other. The control circuit 23 updates the content of the stripes 17 upon ending of the recording. The recording efficiency is thereby improved.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention relates to an optical recording medium such as an optical memory card that records or reproduces data using a laser beam or the like. related to handling equipment.

(Prior Art) In recent years, research and development have been conducted on handling devices that record data on optical memory cards or reproduce data using, for example, laser light.

This optical memory card handling device records data by using a laser beam or the like to form holes called bits in a data recording area called a plurality of tracks provided in parallel in the optical recording section of the optical memory card. (
By performing writing) and using the above laser beam as a light source, bits (low reflectance) and non-bits (high reflectance) can be written.
Data is reproduced (read) by receiving the difference in reflected light from the CCDCCD beamline sensor.

By the way, in the above-mentioned optical memory card handling device,
In order to prevent other data from being erroneously overwritten on a track on which data has already been recorded (recorded), management data as a directory is added.

In other words, in order to determine up to which track data has been recorded, management data consisting of address information such as the track number where data has been recorded is generated using software, and this can be used to identify the tracks on which each data is recorded. It is now centrally managed.

However, in such conventional optical memory card handling devices, one piece of management data is required for one piece of data, so as the number of recorded data increases, the number of pieces of management data also increases. That is, when the number of management data increases, the process of determining the recording start position (unrecorded first track) becomes complicated (overhead becomes very large), and data recording efficiency is reduced.

Furthermore, there is a high possibility that data will be overwritten on an already recorded track due to a misjudgment, resulting in a reduction in recording accuracy.

(Problems to be Solved by the Invention) This invention eliminates the drawback that when the number of management data increases, the process of determining the recording start position becomes complicated and the data recording efficiency and accuracy decrease. It is an object of the present invention to provide an optical recording medium handling device that makes it easy to judge whether the data is accurate, manages recorded data reliably, and improves data recording efficiency and accuracy.

[Structure of the Invention] (Means for Solving the Problems) An optical recording medium handling device of the present invention includes an optical recording section for recording optical data and a magnetic recording section for recording magnetic data. An optical recording medium handling device that records or reproduces data on an optical recording medium, wherein position data is placed in the magnetic recording section according to a recording start position or a previous recording end position of the optical recording section. a magnetic recording means for recording data, an optical recording means for recording optical data from a recording start position of the optical recording section corresponding to the position data recorded in the magnetic recording section when recording data; and updating means for updating the position data of the magnetic recording section after the data is recorded by the means.

(Function) In the present invention, position data corresponding to the recording start position or the previous recording end position in the optical recording section is recorded in the magnetic recording section, and when data is recorded, it is recorded in the magnetic recording section. Data is recorded from a recording start position of the optical recording section corresponding to the position data, and after recording this data, the position data of the magnetic recording section is sequentially updated.

(Example) An example of the present invention will be described below with reference to the drawings.

In FIG. 1, an optical memory card (source B medium) 10 is placed on a holder 1a of a card transport section 1, and is driven by the card transport section 1, for example, in the X-axis direction. The optical memory card 10 is shown in FIG.
), for example, a stripe 12 as an optical recording section is provided on a predetermined portion of the surface of a plastic card base 11 along its longitudinal direction, and the stripe 12 is protected with a transparent plastic (not shown). It has a similar structure.

The stripe 12 has a plurality of tracking lines 13 along its longitudinal direction as a tracking guide.
... are provided at approximately equal intervals, and these tracking lines 13. ... is written near the front end thereof.Brie format data 15 consisting of a synchronization signal (clock data) used during data recording or reproduction and a track number is written.

For example, as shown in FIG. 3, the flash format data 15 includes synchronization signals 15a and track numbers 15b, which are alternately provided in a plurality (three pieces each), the tracking line 13, and the flash format data. 1
5 and a synchronizing signal 15c for distinguishing between the two. The synchronization signals (for example, 100 to 1000 bits) 15a and 15c have a period of T (10 to 20 μs).
It becomes. The track number 15b is, for example, 1
It consists of a 6-bit MFM code.

Also, the tracking line 13. ... is track (data recording @tiit) 14. For example, from the upper end of the stripe 12 toward the lower end, the first track, first track, . . .

Track 14 above. . . . multiple pieces of data are recorded. That is, each track 14.・
. . , data is digitally recorded by using, for example, a laser beam to open holes 16 called bits (indicated by O in the figure). In this case, as shown in FIG. 4, if data (3) is "1J", bit (2) is formed from the falling edge of synchronization signal (1), and if data is "0", bit ( 2) is not formed, and the data is “0”.
” continues, the bit (
2).

As a result, the bit (hole) 16, for example, has data r
l, 0. In the case of O, 0, IJ, "1゜5T, IT, 1
．． They are formed at intervals of 5T and J, respectively, and as the number of "○" increases, the second and subsequent "0"
The interval between bit 16 and the next “0” is always “1T”
It is designed to be. Furthermore, when the data is rl and IJ, they are formed regularly at intervals of "1T", and when the data are rl, O, and IJ, they are formed at intervals of "2T". Further, as shown in FIG. 3, the bit 16 is formed from a predetermined position of the synchronization signal 15c.

For example, the stripe 12 of the optical memory card 1o has 2000 tracks, and 512 bytes of data are recorded on each track.

Further, as shown in FIG. 2(b), a magnetic stripe 17 as a magnetic recording section is provided on a predetermined portion of the back surface of the optical memory card 10 along its longitudinal direction.

Above the optical memory card 10, each track 14 of the stripe 12. ..., an optical head section (optical recording means) 21 for optically recording (writing) or reproducing (i5!) data is an optical memory card 1.
It is provided so as to be movable in the direction orthogonal to zero, that is, in the Y-axis direction.

This optical head section 21 is composed of, for example, a semiconductor laser oscillator, a diffraction grating, a beam splitter, a λ/4 plate, an imaging lens, a photodetector, etc., and uses two tracking lines 13 using a three-beam method. and track 14
Three laser beams are irradiated to record or reproduce data, and the reflected light from the tracking line 13 performs tracking and forcing. The output of the optical head section 21 is supplied to a binarization circuit 22. In this binarization circuit 22, the optical head section 2
The output from 1 is binarized and supplied to the control circuit 23.

On the other hand, below the optical memory card 10, a magnetic head section (VA recording means) 27 is provided for magnetically recording (writing) or reproducing (reading) data on the magnetic stripe 17 of the optical memory card 1o. is provided so as to be movable in the X-axis direction. This magnetic head section 27 is
The head of the unrecorded data recording area in the stripe 12, that is, the track number indicating the recording start track as position data indicating the recording start position is recorded on or read from the magnetic stripe 17. The output of the magnetic head section 27 is supplied to a control circuit 23.

The control circuit 23 receives a signal from a host computer (not shown) supplied via the transmission υIwJ unit 24, such as data for several tracks to be recorded in the stripe 12 as a recording signal, or reads data as a reproduction signal. The entire apparatus is controlled according to the track number on the stripe 12 to be performed.

That is, the control circuit 23 controls the laser driver 25 in response to a signal from the host computer, drives a semiconductor laser oscillator (not shown) in the optical head section 21, and causes the optical head section 21 to emit laser light. It looks like this.

The ill 111 circuit 23 also controls the transport control section 26 in response to a signal from the host computer, moves the optical head section 21 in the X-axis direction, moves the card transport section 1 in the X-axis direction, and moves the optical head section 21 and the card transport section 1 in the X-axis direction, respectively. Access the head section 21 to a predetermined track (track jump or track jump)
In addition to performing a search), tracking and focusing control I (servo control) is performed on the optical head section 21 and card transport section 1. Further, the control circuit 23 moves the magnetic head section 27 and the card transport section 1 by controlling the transport control section 26, and moves the magnetic head section 27 and the optical memory card 1.
Position control with respect to 0 is performed.

The control circuit 23 also controls the transmission control section 24 to exchange signals between the host computer and the control circuit 23.

That is, when a reproduction signal is supplied from the host computer, the control circuit 23 drives a semiconductor laser oscillator (not shown) in the optical head section 21 by controlling the laser driver 25, and at the same time drives a semiconductor laser oscillator (not shown) in the optical head section 21. 26, the optical head section 21 and the card transport section 1 are driven, and the corresponding track 14 is irradiated with laser light from the optical head section 21. and,
When the optical head section 21 corresponds to the target track 14, the transport control section 26 causes the optical head section 21 to control the optical head according to the reflected light from the tracking line 13 supplied via the binarization circuit 22 and the control circuit 23. 21 and card transport section 1 by servo control. In this state, the signal read from the target track 14 by the optical head section 21 and binarized by the binarization circuit 22 is transferred to the host computer via the transmission control section 24 to reproduce the data. It is supposed to be done.

Further, when a recording signal is supplied from the host computer, the control circuit 23 controls the transport control section 26 to drive the card transport section 1 and the magnetic head section 27, and the magnetic head section 27 drives the optical memory card 10.
The content of the magnetic stripe 17, that is, the track number indicating the recording start track is read. Next, by controlling the laser driver 25, a semiconductor laser oscillator (not shown) in the optical head section 21 is driven, and at the same time, by controlling the transport control section 26, the optical head section 21 and the card transport section 1 are driven. Then, the optical head section 2
The laser beam from 1 is irradiated onto the track 14 corresponding to the track number. Then, the optical head section 21
When the optical head 21 corresponds to the target track 14, the optical head 21 is moved by driving the laser driver 25 according to data from the host computer while servo-controlling the optical head 21 and the card transport section 1. Accordingly, data is recorded on the corresponding track 14.

Furthermore, the control circuit (updating means) 23 controls the magnetic head section 27 at the end of data recording, thereby
By adding the size of the recorded data, that is, the number of data recording tracks to the contents of the magnetic stripe 17, the track number of the recording start track is updated.

For example, when data of "512 bytes" is supplied from the host computer as data size, when the recording of this data is completed, the magnetic head section 27
The content of the magnetic stripe 17, that is, the track number indicating the recording start track as position data indicating the recording start position is changed to ``1'' according to the number of tracks on which data is recorded.
Count up. For example, if data of 1024 bytes is supplied from the host computer, when the recording of this data is completed, the magnetic head unit 2
7, the contents of the magnetic stripe 17 are counted up by "2" in accordance with the number of tracks "2" on which data has been recorded.

Next, the operation in such a configuration will be explained.

First, the data reproduction (reading) operation will be explained with reference to the flowchart shown in FIG.

For example, suppose that a track number to be accessed is supplied from a host computer (not shown) (ST11).
. Then, the control circuit 23 controls the magnetic head section 27 and the transport control section 26 to read the contents of the magnetic stripe 17 of the optical memory card 10, that is, the track number indicating the recording start track, and reads the track number indicating the recording start track. and the track number from the host computer (ST12). As a result, if the track number from the host computer is larger than the track number indicating the recording start track, it is determined that no data is recorded on the corresponding track, and the transmission control unit 2
4 to the host computer (ST13).

On the other hand, if the track number supplied from the host computer is smaller than the track number indicating the recording start track, the laser driver 25 and the transport control section 26 are controlled, and the optical head section 21 is accessed to the corresponding track. search) (ST14). Then, when it is confirmed that the track number from the host computer matches the track number from the tracking line 13, data is read from that track (ST15).

The read data is binarized by the binarization circuit 22 and then transferred to the host computer via the transmission control section 24 (ST16).

Next, the data recording (II included) operation will be explained with reference to the flowchart shown in FIG.

For example, suppose that data to be recorded is supplied from a host computer (not shown) via the transmission control section 24 (ST21>. Then, the control circuit 23 controls the magnetic head section 27 and the transport control section 26, Read the contents of the magnetic stripe 17 of the optical memory card 10. Then,
By controlling the laser driver 25 and the transport control section 26, the optical head section 21 is caused to access (track search) the track corresponding to the track number according to the contents of the magnetic stripe 17 (ST22). Next, if the track searched by the light reflected from the tracking line 13 by the optical head unit 21 matches the track number, the laser driver 25 drives a semiconductor laser oscillator (not shown) according to data from the host computer. By doing so, data is recorded from that track (ST23).

When the recording of this data is completed, the control circuit 23 updates the contents of the magnetic stripe 17<5T24). That is, the contents of the magnetic stripe 17 are updated by adding (counting up) the number of recording tracks of the data recorded in step 23 above to the track number recorded on the magnetic stripe 17. As a result, the contents of the magnetic stripe 17 are updated. 17, a track number indicating a new recording start track is recorded.

When recording other data, by operating in the same manner as described above, data is recorded sequentially from the track corresponding to the track number recorded on the magnetic stripe 17, and as this data is recorded, the magnetic stripe 17
The contents are updated sequentially.

As described above, the track number indicating the recording start track is recorded on the magnetic stripe, and the contents of the magnetic stripe are sequentially updated each time data recording is completed. This makes it possible to always accurately manage the position of the recording start track, thereby preventing malfunctions such as overwriting another data onto a track where data has already been recorded. Furthermore, since the position of the recording start track can be easily determined, the complexity of searching for management data every time data is recorded can be eliminated, and recording efficiency can be improved.

In other words, data is written at the beginning of the write area recorded in the magnetic stripe, eliminating write errors such as accidentally overwriting data that has already been written, and searching for the next write area. It saves time and makes data management clear.

Furthermore, since data can be recorded in areas (tracks) where management data has conventionally been recorded, it is possible to increase the amount of data recorded, that is, to improve recording efficiency.

In the above embodiment, the track number corresponding to the recording start position is recorded on the magnetic stripe as position data, and data is recorded from the track corresponding to this track number. A track number corresponding to the previous recording end position may be recorded, and data may be recorded from the next track corresponding to this track number.

Furthermore, although the position data has been described as indicating a track number, it may also be indicated by a track and the number of a sector obtained by dividing one track into a plurality of parts. In general, the position data may be anything that serves as a position reference for recording data other than track numbers.

Further, although the explanation has been given using an optical memory card handling device as an example of an optical recording medium handling device, the present invention is not limited to this, and can be applied to, for example, an optical disk handling device.

[Effects of the Invention] As detailed above, according to the present invention, it becomes easy to determine the recording start position, and the recorded data can be reliably managed, improving data recording efficiency and accuracy. It is possible to provide an optical recording medium handling device that can handle an optical recording medium.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic diagram showing the overall configuration, FIGS. 2 to 4 show the configuration of an optical memory card, and FIG. 2 shows the overall configuration. 3 is a diagram illustrating an example of the structure of Buri format data, FIG. 4 is a diagram illustrating an example of the data format, and FIG. 5 is a flowchart for explaining the playback operation.
FIG. 6 is a flowchart for explaining the recording operation. 10... Optical memory card, 12... Strive, 1
3...Tracking line, 14...Track, 1
5...Brie format data, 15b...Track number, 17...Magnetic stripe, 21...Optical head section, 23...Control circuit, 27...Magnetic head section applicant's agent Patent Attorney Takehiko Suzue Yobe 1.Kuchi-1-to◇ Figure 5 Figure 6

Claims (3)

[Claims] (1) An optical recording medium handling device that records or reproduces data on an optical recording medium that has an optical recording section for recording optical data and a magnetic recording section for recording magnetic data. , a magnetic recording means for recording position data in the magnetic recording section according to a recording start position or a previous recording end position of the optical recording section; The apparatus further comprises an optical recording means for recording optical data from a recording start position of the corresponding optical recording section, and an updating means for updating the position data of the magnetic recording section after recording data by the optical recording means. An optical recording medium handling device characterized by: (2) The optical recording medium according to claim 1, wherein the updating means updates the position data of the magnetic recording section according to the size of data recorded on the optical recording section. Handling equipment. (3) The optical recording section is composed of multiple tracks,
2. The optical recording medium handling apparatus according to claim 1, wherein the position data indicates a track number.