JPS5663673A - Slice level generation system - Google Patents
Slice level generation systemInfo
- Publication number
- JPS5663673A JPS5663673A JP13834379A JP13834379A JPS5663673A JP S5663673 A JPS5663673 A JP S5663673A JP 13834379 A JP13834379 A JP 13834379A JP 13834379 A JP13834379 A JP 13834379A JP S5663673 A JPS5663673 A JP S5663673A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- slice level
- comparator
- video
- 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
Landscapes
- Character Input (AREA)
Abstract
PURPOSE: To reduce the influence by variations caused by the position of a sensor, and variations of the optical system, and obtain an exact video shaping signal, by dividng one scanning section of a optical sensor, and providing a circuit for setting each independent slice level.
CONSTITUTION: A video signal 112 is output by scanning the field of view of the medium 302 by the sensor circuit 12 and converting it photoelectrically, and a video signal 113 is provided to the slice level setting circuits 14, 15 and the comparator 18 through the amplifier counter circuit 13. Also, clocks from the clock osillating circuit 11 are counted by the circuit 19, and a sectional signal and an output signal 119 of the inverting circuit 16 are provided to the circuit 14 and the circuit 15, respectively. Moreover, divided slice level signals 114, 115 from the respective circuits 14, 15 are provided to the analog multiplexer 17, at the same time the sectional signal 118 is provided to the multiplexer 17, and a reference signal 116 is provided to the comparator 18 in accordance with "1" or "0" of the signal 119. And the signals 114, 115 are compared with the signal 116 by the comparator 18, and a video shaping signal which has an equal level corresponding to the mark is output.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13834379A JPS5663673A (en) | 1979-10-26 | 1979-10-26 | Slice level generation system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13834379A JPS5663673A (en) | 1979-10-26 | 1979-10-26 | Slice level generation system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5663673A true JPS5663673A (en) | 1981-05-30 |
Family
ID=15219695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13834379A Pending JPS5663673A (en) | 1979-10-26 | 1979-10-26 | Slice level generation system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5663673A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189783A (en) * | 1982-04-30 | 1983-11-05 | Fuji Electric Co Ltd | Pattern discriminator |
-
1979
- 1979-10-26 JP JP13834379A patent/JPS5663673A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58189783A (en) * | 1982-04-30 | 1983-11-05 | Fuji Electric Co Ltd | Pattern discriminator |
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