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US 5,313,471 AGranted
Error concealing method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHideki Otaka, Masakazu Nishino, Tatsuro Juri
Life of this patent
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AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHideki Otaka, Masakazu Nishino, Tatsuro Juri
Estimating the term…
A record unit of coded video data is concealed. The record unit is reproduced from a recording medium and has a first recording block containing a part of a coded video data A which has been obtained by coding m blocks of video data among a plurality of blocks of video data divided from video data of one page, a second recording block containing a part of a coded video data B which has been obtained by coding other m blocks of video data among the plurality of blocks of video data and a third recording block containing in a first part thereof the remaining part of the coded video data A and in a second part thereof the remaining part of the coded video data B. The record unit also contains an address data indicating an address of a border of the first and second parts of the third recording block. The record unit of the coded video data is concealed by detecting an error position where an error of coded video data exists in the record unit, detecting the address data contained in the record unit, comparing the detected address data with an address data contained in a corresponding record unit of a previous page, and determining which part of the record unit should be replaced by a corresponding part of the corresponding record unit of the previous page according to the error position and a comparison result. The part of the record unit thus determined is replaced by a corresponding part of the corresponding record unit of the previous page to thereby conceal the record unit.
A method of concealing a record unit of coded video data which has been reproduced from a recording medium and has a first recording block containing a part of a coded video data A which has been obtained by coding m blocks of video data among a plurality of blocks of video data divided from video data of one page, a second recording block containing a part of a coded video data B which has been obtained by coding other m blocks of video data among said plurality of blocks of video data and a third recording block containing in a first part thereof the remaining part of said coded video data A and in a second part thereof the remaining part of said coded video data B, said record unit also containing an address data indicating an address of a border of said first and second parts of said third recording block, said method comprising the steps of:
A method of concealing a record unit of coded video data which has been reproduced from a recording medium and has sequentially arranged first recording block containing low frequency components of a coded video data A which has been obtained by coding m blocks of video data among a plurality of blocks of video data divided from video data of one page, second recording block containing low frequency components of a coded video data B which has been obtained by coding other m blocks of video data among said plurality of blocks of video data and third recording block containing in a first part thereof high frequency components of said coded video data A and in a second part thereof high frequency components of said coded video data B, said record unit also containing an address data indicating an address of a border of said first and second parts of said third recording block, said method comprising the steps of:
Dependencies are inferred from the claim text.