JPS5632871A - Facsimile signal receiver - Google Patents
Facsimile signal receiverInfo
- Publication number
- JPS5632871A JPS5632871A JP10816579A JP10816579A JPS5632871A JP S5632871 A JPS5632871 A JP S5632871A JP 10816579 A JP10816579 A JP 10816579A JP 10816579 A JP10816579 A JP 10816579A JP S5632871 A JPS5632871 A JP S5632871A
- Authority
- JP
- Japan
- Prior art keywords
- transmission time
- block
- scanning line
- substitute
- transmission
- 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
- 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
Abstract
PURPOSE:To reduce the deterioration of a picture by limiting the substitute recording of excessive scanning lines by deciding whether a synchronizing signal is normal or not by checking the volume of transmitted information by a facsimile signal receiver. CONSTITUTION:Data for one scanning line transmitted through transmission line 1 are coded as one block and a fascimile signal with an added synchronizing signal that indicates punctuation of the block is received to check the transmission time of the block. When this transmission time is shorter than the shortest transmission time of one block previously fixed between the transmission side and reception side, a decision on that the detected synchronizing signal is not normal is made and the substitute scanning line of the corresponding block is not recorded. When the transmission time of two continuous blocks is shorter than the shortest transmission time and the sum of both the transmission times is longer than the shortest transmission time, data for one scanning line right before two corresponding blocks is recorded at the substitute scanning line. Thus, the recording of an excessive substitute scanning line can be limited, so that the deterioration of the quality of a recording picture can be prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10816579A JPS5632871A (en) | 1979-08-27 | 1979-08-27 | Facsimile signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10816579A JPS5632871A (en) | 1979-08-27 | 1979-08-27 | Facsimile signal receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5632871A true JPS5632871A (en) | 1981-04-02 |
Family
ID=14477614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10816579A Pending JPS5632871A (en) | 1979-08-27 | 1979-08-27 | Facsimile signal receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5632871A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62250883A (en) * | 1986-04-21 | 1987-10-31 | Meidensha Electric Mfg Co Ltd | Automatic change-over mechanism for inverter |
JPH0613399U (en) * | 1993-04-22 | 1994-02-18 | 株式会社明電舎 | Inverter automatic switching device |
-
1979
- 1979-08-27 JP JP10816579A patent/JPS5632871A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62250883A (en) * | 1986-04-21 | 1987-10-31 | Meidensha Electric Mfg Co Ltd | Automatic change-over mechanism for inverter |
JPH0613399U (en) * | 1993-04-22 | 1994-02-18 | 株式会社明電舎 | Inverter automatic switching device |
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