JPS54114918A - Line density selection system for reader for video information - Google Patents
Line density selection system for reader for video informationInfo
- Publication number
- JPS54114918A JPS54114918A JP2155878A JP2155878A JPS54114918A JP S54114918 A JPS54114918 A JP S54114918A JP 2155878 A JP2155878 A JP 2155878A JP 2155878 A JP2155878 A JP 2155878A JP S54114918 A JPS54114918 A JP S54114918A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- read
- pulse
- line density
- reduced
- 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.)
- Granted
Links
Landscapes
- Facsimile Scanning Arrangements (AREA)
Abstract
PURPOSE: To obtain the video signal of scanning line density reduced in number, by picking up specific video signal from the video signal with the sampling pulse having the reduced frequency for the read-in pulse frequency.
CONSTITUTION: From the clock pulse generator 11, the sampling pulse (d) reduced to a given frequency according to the desired line density and the read-in pulse (c) is generated. Further, the read-in head 13 consisting of a plural number of self-scanning type photo detection elements arranged toward subscanning, is driven with the read-in pulse (c) of the read-in head drive circuit 12, picking up the video signal output sequentially and serially. This video signal output is made to binary number with the amplifier 14 and binary circuit 15 into video signal (a). Further, the video signal (e or e') haing a given line density according to the sampling pulse from the video signal (a) is picked up from the video signal pick up circuit 16.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2155878A JPS54114918A (en) | 1978-02-28 | 1978-02-28 | Line density selection system for reader for video information |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2155878A JPS54114918A (en) | 1978-02-28 | 1978-02-28 | Line density selection system for reader for video information |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54114918A true JPS54114918A (en) | 1979-09-07 |
JPS6117386B2 JPS6117386B2 (en) | 1986-05-07 |
Family
ID=12058327
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2155878A Granted JPS54114918A (en) | 1978-02-28 | 1978-02-28 | Line density selection system for reader for video information |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54114918A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58196759A (en) * | 1982-05-12 | 1983-11-16 | Canon Inc | Original picture reader |
JPS6046659A (en) * | 1983-08-25 | 1985-03-13 | Konishiroku Photo Ind Co Ltd | Picture reader of film |
JPS6046660A (en) * | 1983-08-25 | 1985-03-13 | Konishiroku Photo Ind Co Ltd | Picture reader of film |
JPS6096956A (en) * | 1983-10-31 | 1985-05-30 | Konishiroku Photo Ind Co Ltd | Film picture reader |
JPS6333971A (en) * | 1986-07-29 | 1988-02-13 | Nec Corp | Picture signal processing circuit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6434394U (en) * | 1987-08-26 | 1989-03-02 |
-
1978
- 1978-02-28 JP JP2155878A patent/JPS54114918A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58196759A (en) * | 1982-05-12 | 1983-11-16 | Canon Inc | Original picture reader |
JPS6046659A (en) * | 1983-08-25 | 1985-03-13 | Konishiroku Photo Ind Co Ltd | Picture reader of film |
JPS6046660A (en) * | 1983-08-25 | 1985-03-13 | Konishiroku Photo Ind Co Ltd | Picture reader of film |
JPH0515097B2 (en) * | 1983-08-25 | 1993-02-26 | Konishiroku Photo Ind | |
JPS6096956A (en) * | 1983-10-31 | 1985-05-30 | Konishiroku Photo Ind Co Ltd | Film picture reader |
JPH0469470B2 (en) * | 1983-10-31 | 1992-11-06 | Konishiroku Photo Ind | |
JPS6333971A (en) * | 1986-07-29 | 1988-02-13 | Nec Corp | Picture signal processing circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6117386B2 (en) | 1986-05-07 |
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