Method and apparatus for preventing duplex recording on information recording medium
AssigneeTEAC Corporation
InventorHiroaki Furuyama
Life of this patent
Estimating the term…
Abstract
A method and apparatus for preventing duplex recording on an information recording medium comprising unrecorded tracks and pre-recorded tracks detects an unrecorded track having a starting address where a recording is to be started, detects a first pre-recorded track occurring after the unrecorded track, confirms an address of the first pre-recorded track by reproducing address signals from vicinities of the first pre-recorded track, records an information signal on unrecorded tracks occurring after the unrecorded track having the starting address, and forcibly stops the recording of the information signal at an unrecorded track having an address which is one less than the address of the first pre-recorded track.
Claims12
A method of preventing a duplex recording on an information recording medium, said information recording medium comprising unrecorded tracks which are not recorded with an information signal and pre-recorded tracks which are pre-recorded with an information signal, said duplex recording being an operation in which an information signal is erroneously recorded on said pre-recorded tracks, said method comprising the steps of:
- detecting a predetermined unrecorded track having a
- starting address where a recording is to be started on said information recording medium;
- detecting a first pre-recorded track occurring after said predetermined unrecorded track based on a signal reproduced from said first pre-recorded track;
- confirming an address of said first pre-recorded track from consecutive addresses reproduced from signals which are reproduced from said first pre-recorded track and a predetermined number of pre-recorded tracks following said first pre-recorded track;
- recording an information signal on said predetermined unrecorded track and unrecorded tracks following said predetermined unrecorded track;
- and
- forcibly stopping the recording of the information signal at an unrecorded track having an address which is one less than the address of said first pre-recorded track.
An apparatus for preventing a duplex recording on an information recording medium, said information recording medium comprising unrecorded tracks which are not recorded with an information signal and pre-recorded tracks which are pre-recorded with an information signal, said duplex recording being an operation in which an information signal is erroneously recorded on said pre-recorded tracks, said apparatus comprising:
- recording and reproducing means for recording and reproducing signals on and from said information recording medium by scanning the tracks thereof;
- means for detecting a predetermined unrecorded track having a starting address where a recording is to be started on said information recording medium;
- means for detecting a first pre-recorded track occurring after said predetermined unrecorded track based on a signal which is reproduced by said recording and reproducing means from said first pre-recorded track;
- means for confirming an address of said first pre-recorded track from consecutive addresses reproduced from signals which are reproduced by said recording and reproducing means from said first pre-recorded trac and a predetermined nmmber of pre-recorded tracks following said first pre-recorded track;
- means for controlling said recording and reproducing means to record an information signal on said predetermined unrecorded track and unrecorded tracks following said predetermined unrecorded track;
- and
- means for forcibly stopping the recording of the information signal by said recording and reproducing means at an unrecorded track having an address which is one less than the address of said first pre-recorded track.
Dependencies are inferred from the claim text.