CA2120510A1 - Circuit for detecting unrecorded portion of recording medium - Google Patents

Circuit for detecting unrecorded portion of recording medium

Info

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
Application number
CA002120510A
Other languages
French (fr)
Other versions
CA2120510C (en
Inventor
Kwang-Heui Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002120510A priority Critical patent/CA2120510C/en
Priority claimed from PCT/KR1992/000070 external-priority patent/WO1994012982A1/en
Publication of CA2120510A1 publication Critical patent/CA2120510A1/en
Application granted granted Critical
Publication of CA2120510C publication Critical patent/CA2120510C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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.
CA002120510A 1992-11-30 1992-11-30 Circuit for detecting unrecorded portion of recording medium Expired - Fee Related CA2120510C (en)

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)

Also Published As

Publication number Publication date
CA2120510C (en) 2001-05-01

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Legal Events

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EEER Examination request
MKLA Lapsed