JPS57129071A - Field discriminating circuit - Google Patents
Field discriminating circuitInfo
- Publication number
- JPS57129071A JPS57129071A JP1456181A JP1456181A JPS57129071A JP S57129071 A JPS57129071 A JP S57129071A JP 1456181 A JP1456181 A JP 1456181A JP 1456181 A JP1456181 A JP 1456181A JP S57129071 A JPS57129071 A JP S57129071A
- Authority
- JP
- Japan
- Prior art keywords
- period
- pulse
- field
- counter
- pulse generator
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/08—Separation of synchronising signals from picture signals
- H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronizing For Television (AREA)
Abstract
PURPOSE:To exactly set a field discriminating period, by using a counter for setting said discriminating period. CONSTITUTION:This circuit is provided with a counter 14 for counting each vertical synchronizing, equivalent and horizontal synchronizing pulse existing in a vertical blanking period, a pulse generator 12 for generating a pulse from starting to count the number prescribed in advance to the end, a pulse generator 15 for generating a pulse in case when a signal whose period is different from a prescribed period has been inputted, a gate circuit 16 to which an output of each pulse generator 12 and 15 is inputted, and an FF17 to which an output of this gate circuit is inputted. In this state, an odd field and an even field are discriminated by an output level of the FF17. In this way, the pulse counter for counting a synchronizing signal is used for setting a field discriminating period, and when this counter counts the prescribed number of pulses, the pulse generator 12 is reset, therefore, the field discriminating period is set exactly.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1456181A JPS57129071A (en) | 1981-02-03 | 1981-02-03 | Field discriminating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1456181A JPS57129071A (en) | 1981-02-03 | 1981-02-03 | Field discriminating circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57129071A true JPS57129071A (en) | 1982-08-10 |
JPS6117194B2 JPS6117194B2 (en) | 1986-05-06 |
Family
ID=11864561
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1456181A Granted JPS57129071A (en) | 1981-02-03 | 1981-02-03 | Field discriminating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57129071A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2013273466B2 (en) | 2012-06-07 | 2018-11-01 | Inserm (Institut National De La Sante Et De La Recherche Medicale) | Methods for detecting inactivation of the homologous recombination pathway (BRCA1/2) in human tumors |
EP3080292B1 (en) | 2013-12-09 | 2022-02-02 | Institut Curie | Methods for detecting inactivation of the homologous recombination pathway (brca1/2) in human tumors |
-
1981
- 1981-02-03 JP JP1456181A patent/JPS57129071A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6117194B2 (en) | 1986-05-06 |
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