System for recording and reproducing digital audio signals

Claim 1

A system for reproducing digital audio data from a recording medium on which segments of said digital audio data are recorded with video data, wherein L segments of said digital audio data correspond to one field of said video data (L is an integer : L ≧ 1), each of said segments including plural samples of said digital audio data, the number of said samples in each said field of M fields out of N fields being different from that of remaining N - M fields (M and N are integers: N > M), and each of said segments further including identification data indicating field numbers 1 through N to which each said segment belongs, said system comprising: means for detecting said identification data in each segment of said digital audio data; means for detecting an error in said identification data; means for deriving numbering data 1 through LN from said identification data, said numbering data indicating the phase of each said segment in a set of said N fields; counter means into which said numbering data derived from said identification data is loaded when no error is detected in said identification data and which counts a clock signal when an error is detected in said identification data, said clock signal having a period corresponding to one said segment; and means for reconstructing said digital audio data according to the output of said counter means.

Claim 2

A system for reproducing digital audio data from a recording medium on which segments of said digital audio data are recorded with video data, wherein L segments of said digital audio data correspond to one field of said video data (L is an integer : L ≧ 1), each of said segments including plural samples of said digital audio data, the number of said samples in each said field of M fields out of N fields being different from that of remaining N - M fields (M and N are integers: N > M), and each of said segments further including identification data indicating field numbers 1 through N to which each said segment belongs, said system comprising: means for detecting said identification data in each segment of said digital audio data; means for detecting an error in said identification data; means for deriving numbering data 1 through LN from said identification data, said numbering data indicating the phase of each said segment in a set of said N fields; counter means into which said numbering data derived from said identification data is loaded when no error is detected in said identification data and which counts a clock signal when an error is detected in said identification data, said clock signal having a period corresponding to one said segment; and means for reconstructing said digital audio data according to the output of said counter means.

Claim 8

A system for recording and reproducing digital audio data and video data on a recording medium, comprising: dividing means for dividing said digital audio data into segments each thereof having plural samples of said digital audio data; adding means for adding identification data to each of said segments; recording means for recording said segments of said digital audio data together with said video data so that one field of said video data corresponds to L segments of said digital audio data (L is an integer: L ≧ 1), the number of said samples in each said field of M fields out of N fields being different from that of remaining N - M fields (M and N are integers: N > M), and said identification data indicating field numbers 1 through N to which each segment belongs; means for reproducing said digital audio data from said recording medium; means for detecting said identification data in each segment of said digital audio data; means for detecting an error in said identification data; means for deriving numbering data 1 through LN from said identification data, said numbering data indicating the phase of each said segment in a set of said N fields; counter means into which said numbering data derived from said identification data is loaded when no error is detected in said identification data and which counts a clock signal when an error is detected in said identification data, said clock signal having a period corresponding to one said segment; and means for reconstructing said digital audio data according to the output of said counter means.

Claim 9

A system for recording and reproducing digital audio data and video data on a recording medium, comprising: dividing means for dividing said digital audio data into segments each thereof having plural samples of said digital audio data; adding means for adding identification data to each of said segments; recording means for recording said segments of said digital audio data together with said video data so that one field of said video data corresponds to L segments of said digital audio data (L is an integer: L ≧ 1), the number of said samples in each said field of M fields out of N fields being different from that of remaining N - M fields (M and N are integers: N > M), and said identification data indicating field numbers 1 through N to which each segment belongs; means for reproducing said digital audio data from said recording medium; means for detecting said identification data in each segment of said digital audio data; means for detecting an error in said identification data; means for deriving numbering data 1 through LN from said identification data, said numbering data indicating the phase of each said segment in a set of said N fields; counter means into which said numbering data derived from said identification data is loaded when no error is detected in said identification data and which counts a clock signal when an error is detected in said identification data, said clock signal having a period corresponding to one said segment; and means for reconstructing said digital audio data according to the output of said counter means.