TH33091B - Methods and devices for writing a record clock on the storage medium - Google Patents

Abstract

The DC60 (02/04/41) has disclosed a method and equipment for writing clock data to storage media, such as a disc with a slot. On which data is stored Writes the clock data to the current recording groove on the storage medium, reads the written clock data. Exit the aforementioned groove record, clock data for later recordings on the storage media. Was built from the clock data read from the groove Such current record The phase of the generated clock data for the subsequent log groove is compared with the reference timing signal. And the phase of the generated clock data for the subsequent recording groove is adjusted. According to the aforementioned comparison Write the adjusted clock information Then said for the next recording groove Down to the groove, the following record can greatly reduce the phase error. And for practical purposes Highly eliminated, no dedicated clock read / write head required. It has disclosed methods and equipment for writing clock data to storage media, such as a disc. On which data is stored Writes the clock data to the current recording groove. On the storage medium, read the written clock data. Exiting the current record groove, the clock data for subsequent recordings on the storage medium is generated from the clock data read from the groove. The current log compares the phase of the clock data generated for the subsequent log groove to the reference timing signal. And the phase of the generated clock data for the subsequent recording groove is adjusted. According to the aforementioned comparison Write the adjusted clock information Then said for the next recording groove Down to the groove recorded later, it can be reduced Large phase faults And for practical purposes Highly eliminated, no dedicated clock read / write head required.

Claims (8)

1. One way for writing clock data. To the storage media with tracks where data is captured, the method consists of the procedure of (A) writing the clock data to the current track on the storage medium (B) Reading the clock data from the current track. (C) Clock data generation For later recording grooves on the storage medium From the clock data read from Current record groove (D) Phase comparison of the clock data generated for the subsequent record groove to the signal. Reference timing And the phase adjustment of the clock data generated for the subsequent log groove according to the aforementioned comparison, and (E) the said phase-adjusted clock data writing for the subsequent log. Go down to the next record 2. The method according to claim 1 at the next record, is the record that is close to the track behind the current record 3. Method according to claim 1, repeat steps (B) to (E) Throughout the groove on the storage medium With clock data at Read from some grooves in steps (B) that are clock data written in step (E) for that groove. 4. Method according to claim 3, repeat steps (B) to (E) for every track on the media. Collect 5. Method according to claim 1 to 4 at the comparison step (D) The phase of the generated clock data is adjusted. To write to the current recording groove Go to quantity on the phase adjustment used for written clock data. Go to the previous groove The phase difference between the reference timing signals. And clock information Generated generated from the clock data read from the current record groove and the phase difference between Reference timing signal And the generated clock data that was generated from the clock data read from the previous log. 6. Method according to claim 5, where in the comparison step (D), the phase of the generated clock data was adjusted. To be written in the current log, n + 1 to the quantity T (n) that is relatively equal to (T (n-1)) - 2T error (n) + T error (n-1) where T (n-1) ) Is the phase adjustment used for clock data written to the current log groove. N, T error (n) is the phase difference between the reference timing signals. And generated clock data Generated from the clock data read from the current log n, and T error (n-1) is the phase difference between the reference timing signals. And generated clock data Constructed from the clock data read from the current log n-1 7. Claim method 5 At the previous record is the adjacent record notch before the current record 8. The storage medium is the disc 9. The method according to claim 8 that the disk is the magnetic disk 1 0. The method according to the claim 8 that the disk is connected to the motor for turning the plate 1 1. Method according to claim 10 obtained The timing signal is referenced from the reverse emf (electromotive force) of the rotating motor 1 2. Method according to claim 1, where the reference timing signal is obtained. From the probe that detects movement through the probe of one index Or multiple indexes On the rotating part of the disk drive with one as the storage medium During the rotation of the plate 1 3. Method according to claim 12 where the index is an optical detectable mark on the plate and the probe is an optical detector 1 4. The method according to claim 12 at that probe is a probe. The conductors do not touch That detects the movement through Highlights of the drive rotation part 1 5. One of the claims. 1 where the reference cadence signal used is Statistical average in time domain 1 6. Claim Method 15 Performing averaging with multiple cycles, copying grooves, clock log 1 7. Device for writing clock data to storage media. With a slit recorded on it that has data stored on it That device consists of Writing method to write the clock data to the current slot on the storage media. A reading path to read the written clock data. From the current record Watch grooving device To generate clock data for subsequent recording tracks on storage media From the clock data read from the current track record Equipment for comparing and adjusting To compare the phases of the generated clock data for Groove record later With reference timing signal And to adjust the phase of the generated clock data for The grooves were later recorded according to the aforementioned comparison and the method for writing the modified clock data. For the next record, go to the next recording track 1. 8. Equipment according to claim 17 at the comparison and phase adjustment device. Include a device to adjust the phase Of the generated clock data to be written to a subsequent recording groove. According to the quantity taken into account, the phase adjustment Used for clock data That is written to the groove of the current record The phase difference between the reference timing signal and the generated clock data. From the clock data read from the current log groove and the phase difference between Reference timing signal And the generated clock data that is generated from the data Clock read from the previous log 1 9. Equipment According to claim 18, the comparator and phase adjustment device has phase adjustment device. Of the generated clock data to be written to the current log groove n + 1 where one quantity T (n) equals T (n-1)) - 2T error (n) + T error, where T (n-1). Is the phase adjustment used for clock data written to Current log groove n, T error (n) is the phase difference between the reference timing signal and the generated clock data. Generated from the clock data read from the current log n, and T error (n-1) is the phase difference between the reference timing signals. And the generated clock data that is generated from the data Clock read from the previous log n-1 2 0.A device according to the claim b 1, equipped with a device to generate a reference timing signal for generating a reference timing signal 2. 1. Equipment according to claim 1, including plate storage media 2 2. The device according to claim 21 on the plate is a magnetic disk 2. 3. The device according to claim 21 where the plate is linked to the motor to turn the plate 2. 4. Equipment according to claim 23 that includes a method for presenting rhythm signals. The reference time obtained from the reverse emf (electromotive force) of such a rotating motor 2. 5. Device according to claim 17, consisting of a probe that detects movement through the probe. Of index one Or multiple indexes On the disk drive rotation part with the disk as a medium during the rotation of the plate to signal the reference timing 2. 6. The device according to claim 25 at that index is an optical detectable mark on a plate and the probe is an optical detector 2. 7. The device according to claim 25 that the probe is Non-contact probe To detect Move through Of the advantages of the rotating part of the disk drive 2 8. Equipment according to claim 17, consisting of a means to provide a reference timing signal. Such is the statistical average in the time domain. Of many of the timing reference signals