JPS54102916A - Signal suppressing transmission system - Google Patents
Signal suppressing transmission systemInfo
- Publication number
- JPS54102916A JPS54102916A JP1010478A JP1010478A JPS54102916A JP S54102916 A JPS54102916 A JP S54102916A JP 1010478 A JP1010478 A JP 1010478A JP 1010478 A JP1010478 A JP 1010478A JP S54102916 A JPS54102916 A JP S54102916A
- Authority
- JP
- Japan
- Prior art keywords
- picture information
- block
- transmitted
- signal
- block containing
- 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
Abstract
PURPOSE: To shorten the transmission time by dividing the synchronous signal and the picture information section into equal n-blocks and then transmitting the control signal obtained by encoding the presence or absence of the picture information within each block along with the signal in the block containing the picture information.
CONSTITUTION: Picture information period PIX in main scanning period L is divided into n-blocks, and the bit number of one block is set to m to check the presence or absence of the picture information for each block. In the example of (A), the picture information exists only in PIX1∼10, 28∼30 and 49∼51. This result is encoded, and control signal CS1 added to the encoded result is transmitted after synchronous signal BLK1 as shown in (B)a. After this, the picture information of the block containing the picture informations transmitted directly. Signal CS is divided equally into n-parts and only the block containing the picture information is set to 1 with the block containing no picture information set 0 to be then transmitted after encoding like (B)b. Thus, full white block PIX11∼27 and 31∼48 are not transmitted, shortening the transmission time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1010478A JPS54102916A (en) | 1978-01-31 | 1978-01-31 | Signal suppressing transmission system |
US06/006,245 US4353095A (en) | 1978-01-31 | 1979-01-24 | Facsimile bandwidth compression method system and apparatus |
CA000320490A CA1141459A (en) | 1978-01-31 | 1979-01-30 | Facsimile bandwidth compression method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1010478A JPS54102916A (en) | 1978-01-31 | 1978-01-31 | Signal suppressing transmission system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54102916A true JPS54102916A (en) | 1979-08-13 |
Family
ID=11740998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1010478A Pending JPS54102916A (en) | 1978-01-31 | 1978-01-31 | Signal suppressing transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54102916A (en) |
-
1978
- 1978-01-31 JP JP1010478A patent/JPS54102916A/en active Pending
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