EP0593260A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coding of data
Assignee: Sony Corp
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Filing: 1993-10-12
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Granted: —
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Expires: 2013-10-12
Abstract
Abstract A coding apparatus for coding digital video data comprises an encode circuit for encoding digital data, and an error correction code adding circuit for adding error correction codes of different bit numbers to respective encoded digital data. These different numbers of bits of error correction codes are formed according to the relevance of the digital data for the reconstruction of the image in case of erroneous digital data.
Inventors
- 👤 Tetsujiro C/O Intellectual Prop. Div. Kondo
- 👤 Kenji c/o Intellectual Prop. Div. Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 17:20
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/94; H04N5/945; H04N19/00; H04N19/10; H04N19/102; H04N19/124; H04N19/134; H04N19/146; H04N19/147; H04N19/149; H04N19/169; H04N19/17; H04N19/176; H04N19/184; H04N19/60; H04N19/85; H04N19/89; H04N19/90; H04N19/98; H04N5/92; H04N5/926; H04N5/9261; H04N19/65
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
36 words
A coding apparatus for coding digital data, comprising: a) encode means for encoding digital data; and b) error correction code adding means for adding error correction codes of different bit numbers to respective encoded digital data.
Claim 2
Dependent Claim
45 words
A coding apparatus according to claim 1, wherein said error correction code adding means adds error correction codes of different bit numbers to data of most significant bit (MSB) side of said encoded digital data and to data of least significant bit (LSB) side thereof.
Claim 3
Dependent Claim
37 words
A coding apparatus according to claim 2, wherein the bit number of error correction code added to the data of MSB side is larger than that of error correction code added to the data of LSB side.
Claim 4
Dependent Claim
36 words
A coding apparatus according to claim 3, wherein the bit number of error correction code added to each of said data become sequentially smaller from the data of MSB side to the data of LSB side.
Claim 5
Dependent Claim
30 words
A coding apparatus according to claim 1, wherein said error correction code adding means adds an error correction code only to the data of MSB side of said encoded data.
Claim 6
Dependent Claim
23 words
A coding apparatus according to claim 1, wherein said encoded means encodes digital data by using an ADRC (adaptive dynamic range coding) method.
Claim 7
Dependent Claim
104 words
A coding apparatus according to claim 6, wherein said encode means includes means for dividing a digital signal into a plurality of blocks, means for detecting a maximum value and a minimum value of a plurality of data within each block, means for calculating a difference between said detected maximum or minimum value of each block and data of each of said blocks, means for determining a quantization bit number on the basis of said maximum or minimum value of each of said blocks, and quantizing means for quantizing said difference by said determined quantization bit number and outputting quantized data as coded data.
Claim 8
Dependent Claim
20 words
A coding apparatus according to claim 1, wherein said encode means encodes said digital data by a discrete cosine transform.
Claim 9
Dependent Claim
33 words
A coding apparatus according to claim 1, wherein said error correction code adding means adds different error correction codes to said digital data in response to a frequency of said encoded digital data.
Claim 10
Dependent Claim
47 words
A coding apparatus according to claim 9, wherein said error correction code adding means adds an error correction code having a bit number larger than an error correction code added to data having a higher frequency to data having a low frequency of said encoded digital data.
Claim 11
Dependent Claim
77 words
A transmitting apparatus comprising: 1) encode means for encoding digital data; 2) error correction code adding means for adding error correction codes of different bit numbers to said respective encoded digital data; 3) means for transmitting encoded data with said error correction code added; 4) means for receiving said transmitted data; 5) means for error-correcting said received data by using an error correction code contained in said received data; and 6) means for decoding said error-corrected data.
Claim 12
Dependent Claim
31 words
A coding method for coding digital data, comprising the steps of: A) encoding digital data; and B) adding error correction codes of different bit numbers to said respective encoded digital data.
Claim 13
Dependent Claim
42 words
A coding method according to claim 12, wherein said error correction adding step includes the step of sequentially deriving MSB to LSB of said encoded data and the step of adding error correction codes of different bit numbers to said derived data.
Claim 14
Dependent Claim
36 words
A coding method according to claim 13, wherein said error correction code added to data of MSB side has a bit number larger than that of the error correction code added to data of LSB side.
References Cited (Backward Citations)
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