Method of and apparatus for recording and reproducing data and transmitting data

Claim 1

A method of recording and reproducing data, comprising the steps of: (a) generating first error-processing data with respect to a predetermined amount of consecutive data, and generating second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) generating record units of data where each record unit of data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; (c) recording each of said record units of data on a recording medium; (d) reproducing each of said record units of data from said recording medium; (e) processing error-correction in said predetermined amount of consecutive data in each of the reproduced record units of data with said first error-processing data with respect to each of said record units of data; (f) if errors cannot be corrected in step (e), at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data; and (g) if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with the first error processing data, regarding all data in at least one block of the N successive blocks, which is not positioned at an end of the N successive blocks, as erased data independently of a position of said errors, so as to produce reproduced data.

Claim 2

A method of recording and reproducing data, comprising the steps of: (a) generating first error-processing data with respect to a predetermined amount of consecutive data, and generating second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) generating record units of data where each record unit of data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; (c) recording each of said record units of data on a recording medium; (d) reproducing each of said record units of data from said recording medium; (e) processing error-correction in said predetermined amount of consecutive data in each of the reproduced record units of data with said first error-processing data with respect to each of said record units of data; (f) if errors cannot be corrected in step (e), at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data; and (g) if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with the first error processing data, regarding all data in at least one block of the N successive blocks, which is not positioned at an end of the N successive blocks, as erased data independently of a position of said errors, so as to produce reproduced data.

Claim 6

A method of transmitting data, comprising the steps of: (a) generating first error-processing data with respect to a predetermined amount of consecutive data, and generating second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) generating units of transmission data where each unit of transmission data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; (c) transmitting each unit of transmission data; (d) processing error-correction in said units of transmission data which have been transmitted with said first error-processing data with respect to each unit of transmitted data; (e) if errors cannot be corrected in step (d), at least detecting errors in the units of transmitted data in each of said blocks with said second error-processing data; and (f) if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of data with said first error-processing data, regarding all data in at least one block which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 7

A method of transmitting data, comprising the steps of: (a) generating first error-processing data with respect to a predetermined amount of consecutive data, and generating second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) generating units of transmission data where each unit of transmission data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; (c) transmitting each unit of transmission data; (d) processing error-correction in said units of transmission data which have been transmitted with said first error-processing data with respect to each unit of transmitted data; (e) if errors cannot be corrected in step (d), at least detecting errors in the units of transmitted data in each of said blocks with said second error-processing data; and (f) if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of data with said first error-processing data, regarding all data in at least one block which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 11

An apparatus for recording and reproducing data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; record unit data generating means for generating record units of data from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; recording and reproducing means for recording said record units of data on a recording medium and reproducing said record units of data from said recording medium; and error correcting means for processing error-correction with respect to said predetermined amount of consecutive data in the record units of data reproduced by said recording and reproducing means with said first error-processing data, and if errors cannot be corrected, at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with said first error-processing data regarding all data in at least one block which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 12

An apparatus for recording and reproducing data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; record unit data generating means for generating record units of data from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; recording and reproducing means for recording said record units of data on a recording medium and reproducing said record units of data from said recording medium; and error correcting means for processing error-correction with respect to said predetermined amount of consecutive data in the record units of data reproduced by said recording and reproducing means with said first error-processing data, and if errors cannot be corrected, at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with said first error-processing data regarding all data in at least one block which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 16

An apparatus for transmitting data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; transmission data generating means for generating units of transmission data where each unit of transmission data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; transmitting means for transmitting each unit of transmission data; and error correcting means for processing error-correction with respect to each of the units of transmission data which have been transmitted with said first error-processing data, and if errors cannot be corrected, at least detecting errors in the transmitted units of transmission data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of transmission data with said first error-processing data, regarding all data in at least one block of the N successive blocks, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 17

An apparatus for transmitting data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; transmission data generating means for generating units of transmission data where each unit of transmission data is generated from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; transmitting means for transmitting each unit of transmission data; and error correcting means for processing error-correction with respect to each of the units of transmission data which have been transmitted with said first error-processing data, and if errors cannot be corrected, at least detecting errors in the transmitted units of transmission data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of transmission data with said first error-processing data, regarding all data in at least one block of the N successive blocks, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 21

A method of reproducing data, comprising the steps of: (a) reproducing record units of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said record units of data; (b) processing error-correction in said predetermined amount of consecutive data in the reproduced record units of data with said first error-processing data with respect to each said record unit of data; (c) if errors cannot be corrected in step (b), at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data; and (d) if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with said first error-processing data regarding all data in at least one block of the N successive blocks which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors, so as to produce reproduced data.

Claim 22

A method of reproducing data, comprising the steps of: (a) reproducing record units of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said record units of data; (b) processing error-correction in said predetermined amount of consecutive data in the reproduced record units of data with said first error-processing data with respect to each said record unit of data; (c) if errors cannot be corrected in step (b), at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data; and (d) if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record units of data with said first error-processing data regarding all data in at least one block of the N successive blocks which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors, so as to produce reproduced data.

Claim 26

A method of transmitting data, comprising the steps of: (a) transmitting a unit of transmission data which is composed of a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) processing error-correction in each unit of transmission data which is transmitted with said first error-processing data with respect to each transmitted unit of transmission data; (c) if errors cannot be corrected in step (b), at least detecting errors in the units of transmission data in each of said blocks with said second error-processing data; and (d) if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of transmission data with said first error-processing data regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 27

A method of transmitting data, comprising the steps of: (a) transmitting a unit of transmission data which is composed of a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; (b) processing error-correction in each unit of transmission data which is transmitted with said first error-processing data with respect to each transmitted unit of transmission data; (c) if errors cannot be corrected in step (b), at least detecting errors in the units of transmission data in each of said blocks with said second error-processing data; and (d) if errors are detected in N successive blocks (where N is an integer of at least 3), processing error-correction in the predetermined amount of consecutive data in the transmitted units of transmission data with said first error-processing data regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 28

An apparatus for reproducing data, comprising: reproducing means for reproducing a record unit of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said record unit of data; error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record unit of data reproduced by said reproducing means, with said first error-processing data with respect to each record unit of data, and if errors cannot be corrected, at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record unit of data with said first error-processing data regarding all data in at least one block which is not positioned at an end of the N successive blocks, as erased data independently of a position of said errors.

Claim 29

An apparatus for reproducing data, comprising: reproducing means for reproducing a record unit of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said record unit of data; error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record unit of data reproduced by said reproducing means, with said first error-processing data with respect to each record unit of data, and if errors cannot be corrected, at least detecting errors in said predetermined amount of consecutive data in each of said blocks with said second error-processing data, and if errors are detected in N successive blocks (where N is a positive integer), processing error-correction in the predetermined amount of consecutive data in the record unit of data with said first error-processing data regarding all data in at least one block which is not positioned at an end of the N successive blocks, as erased data independently of a position of said errors.

Claim 30

An apparatus for recording and reproducing data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; record unit data generating means for generating a record unit of data from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; recording and reproducing means for recording said record unit of data on a recording medium and reproducing said record unit of data from said recording medium; error detecting means for detecting in each of said block an error status of a reproduced signal indicative of the record unit of data which is reproduced by said recording and reproducing means, based on a video level of said reproduced signal; and error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record unit of data reproduced by said recording and reproducing means, with said first error-processing data with respect to each record unit of data, and if errors cannot be corrected with said first error-processing data with respect to each record unit of data, determining blocks as errors based on the error status detected by said error detecting means, and when N successive blocks are determined as error (where N is a positive integer), processing error-correction in the predetermined amount of data in the record units of data with said first error-processing data, regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased independently of a position of said errors.

Claim 31

An apparatus for recording and reproducing data, comprising: error-processing data generating means for generating first error-processing data with respect to a predetermined amount of consecutive data, and second error-processing data with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data; record unit data generating means for generating a record unit of data from said predetermined amount of consecutive data, said first error-processing data, and said second error-processing data; recording and reproducing means for recording said record unit of data on a recording medium and reproducing said record unit of data from said recording medium; error detecting means for detecting in each of said block an error status of a reproduced signal indicative of the record unit of data which is reproduced by said recording and reproducing means, based on a video level of said reproduced signal; and error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record unit of data reproduced by said recording and reproducing means, with said first error-processing data with respect to each record unit of data, and if errors cannot be corrected with said first error-processing data with respect to each record unit of data, determining blocks as errors based on the error status detected by said error detecting means, and when N successive blocks are determined as error (where N is a positive integer), processing error-correction in the predetermined amount of data in the record units of data with said first error-processing data, regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased independently of a position of said errors.

Claim 32

An apparatus for reproducing data, comprising: reproducing means for reproducing record units of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said data of record units of data; error detecting means for detecting in each of said block an error status of a reproduced signal indicative of the record units of data which are reproduced by said reproducing means, based on a video level of said reproduced signal; and error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record units of data reproduced by said reproducing means, with said first error-processing data with respect to each of said record units of data, and if errors cannot be corrected, determining blocks as errors based on the error status detected by said error detecting means, and when N successive blocks are determined as error (where N is a positive integer), processing error-correction in the predetermined amount of data in the record unit of data with said first error-processing data regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.

Claim 33

An apparatus for reproducing data, comprising: reproducing means for reproducing record units of data from a recording medium on which there are recorded a predetermined amount of consecutive data, first error-processing data generated with respect to said predetermined amount of consecutive data, and second error-processing data generated with respect to each of a plurality of blocks produced by dividing said predetermined amount of consecutive data, making up said data of record units of data; error detecting means for detecting in each of said block an error status of a reproduced signal indicative of the record units of data which are reproduced by said reproducing means, based on a video level of said reproduced signal; and error-correction processing means for processing error-correction in said predetermined amount of consecutive data in the record units of data reproduced by said reproducing means, with said first error-processing data with respect to each of said record units of data, and if errors cannot be corrected, determining blocks as errors based on the error status detected by said error detecting means, and when N successive blocks are determined as error (where N is a positive integer), processing error-correction in the predetermined amount of data in the record unit of data with said first error-processing data regarding all data in at least one block, which is not positioned at an end of the N successive blocks, as being erased data independently of a position of said errors.