JPH0272039U - - Google Patents
Info
- Publication number
- JPH0272039U JPH0272039U JP1988150819U JP15081988U JPH0272039U JP H0272039 U JPH0272039 U JP H0272039U JP 1988150819 U JP1988150819 U JP 1988150819U JP 15081988 U JP15081988 U JP 15081988U JP H0272039 U JPH0272039 U JP H0272039U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- output signal
- detection circuit
- level
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Noise Elimination (AREA)
- Stereo-Broadcasting Methods (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第１図は、本考案の一実施例を示す回路図、及
び第２図は本考案の改良の対象となる信号判別回
路を示す回路図である。
３……カウンタ、８……検出回路、９……レベ
ル検出回路、１０……アンドゲート。
FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a signal discrimination circuit which is an object of improvement of the present invention. 3...Counter, 8...Detection circuit, 9...Level detection circuit, 10...And gate.
Claims (1)
るパルス発生回路と、該パルス発生回路の出力信
号に応じてクロツク信号を計数するカウンタと、
該カウンタの計数値により前記識別信号の存在を
検出する検出回路とから成る信号判別回路におい
て、前記識別信号のレベルを検出し、前記検出回
路の為のリセツト信号を発生するレベル検出回路
と、前記検出回路の出力信号の状態に応じて、前
記リセツト信号を遮断するゲート回路とを備える
ことを特徴とする信号判別回路。 (2) 前記検出回路は、前記カウンタの計数値が
所定値になつたことを検出して第１のレベルの出
力信号を発生し、前記ゲート回路は、前記第１の
レベルの出力信号に応じて前記レベル検出回路の
出力信号を遮断することを特徴とする請求項第１
項記載の信号判別回路。[Claims for Utility Model Registration] (1) A pulse generation circuit that generates pulses according to the frequency of an identification signal, a counter that counts clock signals according to the output signal of the pulse generation circuit,
a detection circuit for detecting the presence of the identification signal based on the counted value of the counter; a level detection circuit for detecting the level of the identification signal and generating a reset signal for the detection circuit; A signal discrimination circuit comprising: a gate circuit that cuts off the reset signal depending on the state of the output signal of the detection circuit. (2) The detection circuit detects that the count value of the counter reaches a predetermined value and generates a first level output signal, and the gate circuit generates a first level output signal in response to the first level output signal. Claim 1, characterized in that the output signal of the level detection circuit is cut off by
Signal discrimination circuit described in section.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15081988U JPH0533086Y2 (en) | 1988-11-18 | 1988-11-18 | |
| KR89016554A KR960009448B1 (en) | 1988-11-16 | 1989-11-15 | Signal distinction circuit |
| DE68923150T DE68923150T2 (en) | 1988-11-16 | 1989-11-16 | Signal discrimination circuit. |
| US07/438,168 US4982431A (en) | 1988-11-16 | 1989-11-16 | Signal distinction circuit |
| CA002003160A CA2003160C (en) | 1988-11-16 | 1989-11-16 | Signal distinction circuit |
| EP89121244A EP0369451B1 (en) | 1988-11-16 | 1989-11-16 | Signal distinction circuit |
| KR96006610A KR960009451B1 (en) | 1988-11-16 | 1996-03-13 | Signal distinction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15081988U JPH0533086Y2 (en) | 1988-11-18 | 1988-11-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0272039U true JPH0272039U (en) | 1990-06-01 |
| JPH0533086Y2 JPH0533086Y2 (en) | 1993-08-24 |
Family
ID=31424301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15081988U Expired - Lifetime JPH0533086Y2 (en) | 1988-11-16 | 1988-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0533086Y2 (en) |
-
1988
- 1988-11-18 JP JP15081988U patent/JPH0533086Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0533086Y2 (en) | 1993-08-24 |
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