JPS57140024A - Signal detecting circuit - Google Patents
Signal detecting circuitInfo
- Publication number
- JPS57140024A JPS57140024A JP56024600A JP2460081A JPS57140024A JP S57140024 A JPS57140024 A JP S57140024A JP 56024600 A JP56024600 A JP 56024600A JP 2460081 A JP2460081 A JP 2460081A JP S57140024 A JPS57140024 A JP S57140024A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- terminal
- output
- signal
- input
- 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
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
- H03K5/1534—Transition or edge detectors
Abstract
PURPOSE:To detect a logical signal consecutive for a specified time for output, by using a counter circuit which outputs signals when a counting value reaches a prescribed number, and an exclusive logical circuit to which an input signal and an output signal are inputted. CONSTITUTION:A terminal 101 is connected to a data input terminal 17 of an FF circuit 104 and one input terminal of an exclusive logical circuit 106, and a terminal 105 is connected to another input terminal of the circuit 106 and an output terminal 15 of the FF circuit 104. The output terminal of the circuit 106 is connected to a clear terminal 11 of a counter circuit 102. Since the output of the circuit 106 is at 1 only when the logic between an input signal of an output signal of a signal detection circuit is different, the counter circuit 102 makes counting operation only at the case, and the output of the circuit 102 is at 0 in other cases. When the circuit 102 makes a prescribed count and supplies a clock signal to a clock terminal 16 of the FF circuit 104, the FF circuit 104 latches an input signal at the terminal 101 and gives an output to the terminal 105. Thus, even if a symmetrical signal is at 0 or 1, the consecutive time can be discriminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56024600A JPS57140024A (en) | 1981-02-20 | 1981-02-20 | Signal detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56024600A JPS57140024A (en) | 1981-02-20 | 1981-02-20 | Signal detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57140024A true JPS57140024A (en) | 1982-08-30 |
Family
ID=12142636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56024600A Pending JPS57140024A (en) | 1981-02-20 | 1981-02-20 | Signal detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57140024A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275598U (en) * | 1985-10-25 | 1987-05-14 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524158A (en) * | 1975-06-24 | 1977-01-13 | Hitachi Ltd | Noise eliminator |
| JPS5224600A (en) * | 1975-08-20 | 1977-02-24 | Toshiba Corp | Multi-functional ticket vender |
| JPS55102928A (en) * | 1979-01-30 | 1980-08-06 | Zeniraito V:Kk | Unneeded-pulse removal circuit |
-
1981
- 1981-02-20 JP JP56024600A patent/JPS57140024A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524158A (en) * | 1975-06-24 | 1977-01-13 | Hitachi Ltd | Noise eliminator |
| JPS5224600A (en) * | 1975-08-20 | 1977-02-24 | Toshiba Corp | Multi-functional ticket vender |
| JPS55102928A (en) * | 1979-01-30 | 1980-08-06 | Zeniraito V:Kk | Unneeded-pulse removal circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6275598U (en) * | 1985-10-25 | 1987-05-14 |
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