JPS6228628B2 - - Google Patents
Info
- Publication number
- JPS6228628B2 JPS6228628B2 JP52153038A JP15303877A JPS6228628B2 JP S6228628 B2 JPS6228628 B2 JP S6228628B2 JP 52153038 A JP52153038 A JP 52153038A JP 15303877 A JP15303877 A JP 15303877A JP S6228628 B2 JPS6228628 B2 JP S6228628B2
- Authority
- JP
- Japan
- Prior art keywords
- pixels
- data
- code
- pixel
- run length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000015654 memory Effects 0.000 claims description 58
- 238000013144 data compression Methods 0.000 claims description 36
- 230000004044 response Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 2
- 238000002789 length control Methods 0.000 claims description 2
- 230000000415 inactivating effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/005—Statistical coding, e.g. Huffman, run length coding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
- H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
- H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding
- H04N1/4175—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding involving the encoding of tone transitions with respect to tone transitions in a reference line
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Compression Of Band Width Or Redundancy In Fax (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/755,313 US4092665A (en) | 1976-12-29 | 1976-12-29 | Method and means for extracting variable length data from fixed length bytes |
| US05/756,662 US4092677A (en) | 1976-12-29 | 1976-12-29 | Truncated run length encoding for fractionally difference modulated video signals |
| US05/756,664 US4136363A (en) | 1976-12-29 | 1976-12-29 | Truncated run length encoding |
| US05/756,663 US4092675A (en) | 1976-12-29 | 1976-12-29 | Truncated run length encoding with a modular variable length code format |
| US05/755,309 US4092676A (en) | 1976-12-29 | 1976-12-29 | Block length multiple plus run length residue codes for run length encoding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5384411A JPS5384411A (en) | 1978-07-25 |
| JPS6228628B2 true JPS6228628B2 (hu) | 1987-06-22 |
Family
ID=27542168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15303877A Granted JPS5384411A (en) | 1976-12-29 | 1977-12-21 | Device for compressing data |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5384411A (hu) |
| CA (1) | CA1118091A (hu) |
| DE (1) | DE2758399C2 (hu) |
| GB (1) | GB1590664A (hu) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5537003A (en) * | 1978-09-07 | 1980-03-14 | Hitachi Ltd | Facsimile transmitter having redundancy suppression function |
| CA1211300A (en) * | 1983-03-02 | 1986-09-16 | Thomas H. Lohr | Bevel gear drive |
| US4517604A (en) * | 1983-04-04 | 1985-05-14 | International Business Machines Corporation | Method for reducing line width variations in bilevel video images |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938510A (hu) * | 1972-08-09 | 1974-04-10 | ||
| JPS5123408A (ja) * | 1974-07-24 | 1976-02-25 | Nippon Steel Corp | Kogyoyorohoshujiniokeru ronaikankisochi |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3869569A (en) * | 1972-05-16 | 1975-03-04 | Xerox Corp | Facsimile transceiving apparatus |
| US3830966A (en) * | 1973-01-03 | 1974-08-20 | Eg & G Inc | Apparatus and method for transmitting a bandwidth compressed digital signal representation of a visible image |
-
1977
- 1977-11-28 CA CA000291838A patent/CA1118091A/en not_active Expired
- 1977-12-21 JP JP15303877A patent/JPS5384411A/ja active Granted
- 1977-12-28 GB GB5393677A patent/GB1590664A/en not_active Expired
- 1977-12-28 DE DE19772758399 patent/DE2758399C2/de not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938510A (hu) * | 1972-08-09 | 1974-04-10 | ||
| JPS5123408A (ja) * | 1974-07-24 | 1976-02-25 | Nippon Steel Corp | Kogyoyorohoshujiniokeru ronaikankisochi |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1590664A (en) | 1981-06-03 |
| DE2758399A1 (de) | 1978-07-13 |
| DE2758399C2 (de) | 1986-04-10 |
| CA1118091A (en) | 1982-02-09 |
| JPS5384411A (en) | 1978-07-25 |
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| US4325085A (en) | Method and apparatus for adaptive facsimile compression using a two dimensional maximum likelihood predictor | |
| US4092665A (en) | Method and means for extracting variable length data from fixed length bytes | |
| US4688100A (en) | Video data encoding/decoding apparatus | |
| US4156880A (en) | Method for transmitting a facsimile signal by sequential edge differential coding | |
| US4136363A (en) | Truncated run length encoding | |
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| US4092676A (en) | Block length multiple plus run length residue codes for run length encoding | |
| US4092677A (en) | Truncated run length encoding for fractionally difference modulated video signals | |
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| JPS6228628B2 (hu) | ||
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