JPS6436281A - Action detecting circuit - Google Patents
Action detecting circuitInfo
- Publication number
- JPS6436281A JPS6436281A JP62191933A JP19193387A JPS6436281A JP S6436281 A JPS6436281 A JP S6436281A JP 62191933 A JP62191933 A JP 62191933A JP 19193387 A JP19193387 A JP 19193387A JP S6436281 A JPS6436281 A JP S6436281A
- Authority
- JP
- Japan
- Prior art keywords
- pair
- action detecting
- signal
- supplied
- frame difference
- 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
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
PURPOSE:To approximate to a frame difference signal and to obtain an action detecting signal being removed a noise component by forming two comparing outputs with a pair of reference levels different in threshold level, and using a pair of comparing outputs and a delaying output. CONSTITUTION:The reference level of a first comparator 11 is set to a prescribed threshold level SH in the same manner as the conventional one. In the same way, the reference level of a second comparator 12 is set to a prescribed threshold level SL lower than SH. A frame difference signal S supplied to a terminal 1 is supplied to a pair of these comparators 11 and 12 and thus, a pair of comparing outputs (a) and (b) is outputted. For a second comparing output (b), only a prescribed time T0 is delayed in a delaying circuit 13. A pair of the comparing outputs (a) and (b) and a delaying output (f) are supplied to a hysteresis circuit 20. A final action detecting signal (i) is obtained from the circuit 20. The action detecting signal (i) has a pulse width W to meet approximately the current frame difference signal S and is obtained as a signal in which a noise component N is removed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62191933A JPS6436281A (en) | 1987-07-31 | 1987-07-31 | Action detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62191933A JPS6436281A (en) | 1987-07-31 | 1987-07-31 | Action detecting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6436281A true JPS6436281A (en) | 1989-02-07 |
Family
ID=16282863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62191933A Pending JPS6436281A (en) | 1987-07-31 | 1987-07-31 | Action detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6436281A (en) |
-
1987
- 1987-07-31 JP JP62191933A patent/JPS6436281A/en active Pending
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