KR970048501A

KR970048501A - Frequency check device

Info

Publication number: KR970048501A
Application number: KR1019950064250A
Authority: KR
Inventors: 이현표
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-12-29
Filing date: 1995-12-29
Publication date: 1997-07-29

Abstract

1. 청구 범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

주파수 체크장치에 관한 것이다.It relates to a frequency check device.

2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention

입력되는 특정 주파수의 검출하여 설정된 정상 주파수인지를 판별하는 주파수 체크장치를 제공한다.The present invention provides a frequency check device for detecting whether a specific frequency inputted is a set normal frequency.

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

입력되는 특정 주파수를 검출하여 이상유무를 판별하는 장치는 상기 특정 주파수의 글리치를 제거하는 글리치제거부와, 상기 글리치제거수단의 출력을 입력하여 상기 입력주파수보다 큰 레벨의 소정 주파수로 변환하는 주파수변환부와, 동작신호 및 정지신호를 반복하여 발생하는 신호발생부와, 상기 동작신호가 입력될 시 상기 주파수변환수단의 출력 주파수를 카운팅하며, 상기 정지신호가 입력될 시 초기화하는 카운터와, 상기 카운터의 출력치를 미리 설정되어 구비된 설정 정상치와 비교하여 상기 출력치가 설정 정상치범위일 시 동일신호를 출력하며, 상기 출력치가 설정 정상치범위가 아닐 시 비동일신호를 출력하는 비교기와, 상기 비교기의 비동일신호 발생 이후 상기 동일 신호가 미리 설정된 횟수만큼 입력될 시 에러복구신호를 출력한 후 초기화하는 히트카운터와, 상기 비교기의 출력을 입력하여 동일신호가 입력될 시 정상신호를 출력하며, 비동일신호가 입력될 시 에러신호를 출력하며, 에러신호 발생에서 상기 히트카운터의 에러복구신호가 입력될 시 정상신호를 출력하는 판별회로로 구성한다.The apparatus for detecting an abnormality by detecting a specific frequency input includes: a glitch removing unit for removing a glitch of the specific frequency, and a frequency conversion for converting the output of the glitch removing means into a predetermined frequency at a level higher than the input frequency. A counter, a signal generator for repeatedly generating an operation signal and a stop signal, a counter for counting an output frequency of the frequency conversion means when the operation signal is input, and a counter for initializing when the stop signal is input, and the counter A comparator for outputting the same signal when the output value is within the set normal value range, comparing the output value of the preset value with a preset normal value, and outputting a non-identical signal when the output value is not within the set normal value range; After the signal is generated, when the same signal is input a predetermined number of times after outputting the error recovery signal When the same signal is inputted by inputting the output of the heat counter to initialize and the comparator, a normal signal is outputted, an error signal is outputted when a non-identical signal is inputted, and an error recovery signal of the heat counter is generated when an error signal is generated. It is composed of a discriminating circuit that outputs a normal signal when it is input.

4. 발명의 중요한 용도4. Important uses of the invention

주파수체크장치에서 보다 정확한 주파수를 검출하여 이상 유무를 체크하기 위해 이를 구현한다.The frequency checking device implements this to detect more accurate frequencies and check for abnormalities.

Description

Frequency check device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 주파수 체크장치의 시스템 블럭도를 보여주는 도면.1 is a system block diagram of a frequency check apparatus of the present invention.

Claims

A device for detecting an abnormality by detecting a specific frequency to be input, the apparatus comprising: means for removing a glitch of the specific frequency and a frequency conversion for converting the output of the glitch removing means into a predetermined frequency at a level higher than the input frequency. Means, signal generation means for repeatedly generating an operation signal and a stop signal, a counter for counting an output frequency of the frequency conversion means when the operation signal is input, and a counter for initializing when the stop signal is input, and the counter Comparison means for outputting the same signal when the output value is within the set normal value range by comparing an output value of the preset value with a preset normal value, and outputting the same signal when the output value is not within the set normal value range; Outputs an error recovery signal when the same signal is input a predetermined number of times after generating a non-identical signal After inputting the heat counter to initialize and the output of the comparison means, and outputs the normal signal when the same signal is input, and outputs an error signal when the same signal is input, error recovery of the heat counter in the error signal generation And a discriminating means for outputting a normal signal when a signal is input.

2. The frequency of claim 1, wherein the glitch removing means comprises delay means for delaying the specific frequency, and logic means for outputting the output of the delay means and the logic of OR of the specified frequency. Check device.

2. The frequency converting means according to claim 1, wherein the frequency converting means comprises delay means for inputting and delaying the output of the glitch removing means, and an exclusive logic means for outputting the logic of the output of the delay means and the logic of the glitch removing means and outputting the result. Frequency check device, characterized in that configured.

The frequency check apparatus of claim 1, wherein the specific frequency to be input is a digital signal, and the converting means for converting the analog signal to the TTL level is configured in addition to the front end of the glitch removing means.

※ Note: The disclosure is based on the original application.