Information recording method and apparatus, information reproducing method and apparatus, and recording medium
AssigneeRicoh Company, Ltd.
InventorYuichi Kadokawa
Life of this patent
Estimating the term…
Abstract
A clock mark for extracting a clock when reproducing information from a recording medium and a synchronization mark for detection a bit-slip are recorded so that a part of the synchronization mark is identical to a pattern of the clock mark. A bit-slip detection and a clock detection are performed simultaneously with a single mark by multi-value recording.
Claims22
An information recording method comprising:
- recording information, a clock mark and a synchronization signal on a recording medium, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, so that a part of said synchronization mark is identical to a pattern of said clock mark.
An information reproducing method comprising:
- reproducing, from a recording medium on which information, a clock mark and a synchronization signal are recorded, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, so that a part of said synchronization mark is identical to a pattern of said clock mark, said information based on said synchronization signal and said clock mark, and detecting said bit-slip by said synchronization mark and also performing a synchronization detection of said clock.
An information recording apparatus for recording on a recording medium by an information recording method for recording information, a clock mark and a synchronization signal on a recording medium, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, so that a part of said synchronization mark is identical to a pattern of said clock mark, the information recording apparatus comprising means for recording said clock mark and said synchronization mark in said information.
An information reproducing apparatus for reproducing a recording medium recorded by an information recording method for recording information, a clock mark and a synchronization signal on a recording medium, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, so that a part of said synchronization mark is identical to a pattern of said clock mark, the information reproducing apparatus comprising means for detecting a bit-slip by said synchronization mark and also performing a synchronization detection of a clock when reproducing the recording medium having information in which said clock mark and said synchronization mark are recorded in the information.
A computer-readable recording medium on which data having a structure comprising a clock mark and a synchronization mark that are recording on said recording medium by an information recording method for recording information, the clock mark and the synchronization signal on a recording medium, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, so that a part of said synchronization mark is identical to a pattern of said clock mark.
An information recording method for recording information on a recording medium at a multi-value level, comprising recording information, a clock mark, a synchronization signal, and a synchronization pull-in mark on a recording medium when recording said information on said recording medium, the clock mark for extracting a clock when reproducing the information, the synchronization mark for detecting a bit-slip on a recording medium, the synchronization pull-in mark for pulling in a phase synchronization at a position immediately after the synchronization mark.
An information recording apparatus for recording information on a recording medium at a multi-value level, comprising means for recording a clock mark, a synchronization mark and a synchronization pull-in mark when recording said information on said recording medium, the clock mark for extracting a clock when reproducing said information from said recording medium, the synchronization mark for detecting a bit-slip on a recording medium, the synchronization pull-in mark for pulling in a phase synchronization at a position immediately after the synchronization mark.
A recording medium comprising a clock mark, a synchronization mark and a synchronization pull-in mark as mark information recorded thereon, the clock mark for extracting a clock when reproducing the information recorded, the synchronization mark for detecting a bit-slip, the synchronization pull-in mark for pulling in a phase synchronization at a position immediately after the synchronization mark.
An information reproducing method comprising:
- detecting, when reproducing a recording medium on which a clock mark, a synchronization mark and a synchronization pull-in mark are recorded as mark information, the clock mark for extracting a clock when reproducing the information recorded, the synchronization mark for detecting a bit-slip, the synchronization pull-in mark for pulling in a phase synchronization at a position immediately after the synchronization mark, the bit-slip based on said synchronization mark and performing a synchronization detection of a clock and matching a phase based on the synchronization pull-in mark.
An information reproducing apparatus for reproducing a recording medium on which a clock mark, a synchronization mark and a synchronization pull-in mark are recorded as mark information, the clock mark for extracting a clock when reproducing the information recorded, the synchronization mark for detecting a bit-slip, the synchronization pull-in mark for pulling in a phase synchronization at a position immediately after the synchronization mark, the information reproducing apparatus comprising mark information processing means for detecting the bit-slip based on said synchronization mark and performing a synchronization detection of a clock and matching a phase based on the synchronization pull-in mark.
Dependencies are inferred from the claim text.