CA2120510A1 - Circuit for detecting unrecorded portion of recording medium - Google Patents
Circuit for detecting unrecorded portion of recording mediumInfo
- Publication number
- CA2120510A1 CA2120510A1 CA002120510A CA2120510A CA2120510A1 CA 2120510 A1 CA2120510 A1 CA 2120510A1 CA 002120510 A CA002120510 A CA 002120510A CA 2120510 A CA2120510 A CA 2120510A CA 2120510 A1 CA2120510 A1 CA 2120510A1
- Authority
- CA
- Canada
- Prior art keywords
- recording medium
- input signal
- unrecorded portion
- generate
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/22—Means responsive to presence or absence of recorded information signals
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Disclosed is a circuit for detecting an unrecorded portion in a recording medium, which comprises a window counting portion (10) for receiving an input signal to recognize if the input signal comes from an unrecorded portion of the recording medium and counting a predetermined time to generate a window pulse signal, and a sync signal generator (20) which is enabled by the window pulse signal, in which if the number of pulses of the input signal is not less than a predetermined number, the generator recognizes the current input signal comes from a data region of the recording medium to simultaneously generate a sync signal, while if the number of pulses of the input signal is not more than a predetermined number of pulses, the generator recognizes the current input signal comes from an unrecorded region of the recording medium, not to generate the sync signal. The unrecorded portion is accurately detected not to generate a sync signal due to noise included in the unrecorded portion of the recording medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002120510A CA2120510C (en) | 1992-11-30 | 1992-11-30 | Circuit for detecting unrecorded portion of recording medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/KR1992/000070 WO1994012982A1 (en) | 1992-11-30 | 1992-11-30 | Circuit for detecting unrecorded portion of recording medium |
CA002120510A CA2120510C (en) | 1992-11-30 | 1992-11-30 | Circuit for detecting unrecorded portion of recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2120510A1 true CA2120510A1 (en) | 1994-05-31 |
CA2120510C CA2120510C (en) | 2001-05-01 |
Family
ID=34796017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002120510A Expired - Fee Related CA2120510C (en) | 1992-11-30 | 1992-11-30 | Circuit for detecting unrecorded portion of recording medium |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2120510C (en) |
-
1992
- 1992-11-30 CA CA002120510A patent/CA2120510C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2120510C (en) | 2001-05-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |