JPS5715568A - Video information coding method - Google Patents
Video information coding methodInfo
- Publication number
- JPS5715568A JPS5715568A JP9023080A JP9023080A JPS5715568A JP S5715568 A JPS5715568 A JP S5715568A JP 9023080 A JP9023080 A JP 9023080A JP 9023080 A JP9023080 A JP 9023080A JP S5715568 A JPS5715568 A JP S5715568A
- Authority
- JP
- Japan
- Prior art keywords
- coding
- picture
- taking notice
- compressor
- intermediate tone
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To express an intermediate tone sufficiently, by coding roughly in taking notice of changing points of picture elements in white and black levels and coding in detail in taking notice of the change in the intermediate tone level. CONSTITUTION:A picture signal read in with a scanner 1 is applied to a buffer register 4 for one line's share via an A/D converter 2 and data compressor 3. In the compressor 3, a coding according to a rough picture state is made by taking notice of the changing point of the video elements in white and black levels. Next, a switch SW1 is selected to (b) side, and the content of the register 4 is applied to the compressor 3, where the detailed coding of the picture is made this time by taking notice the changing state of intermediate tone level only. A buffer circuit 5 combines coded signals in data compression serially and transmits it to a MODEM6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9023080A JPS5715568A (en) | 1980-07-02 | 1980-07-02 | Video information coding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9023080A JPS5715568A (en) | 1980-07-02 | 1980-07-02 | Video information coding method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5715568A true JPS5715568A (en) | 1982-01-26 |
Family
ID=13992678
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9023080A Pending JPS5715568A (en) | 1980-07-02 | 1980-07-02 | Video information coding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5715568A (en) |
-
1980
- 1980-07-02 JP JP9023080A patent/JPS5715568A/en active Pending
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