KR970016899A - Key Search Method - Google Patents

Key Search Method Download PDF

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Publication number
KR970016899A
KR970016899A KR1019950030749A KR19950030749A KR970016899A KR 970016899 A KR970016899 A KR 970016899A KR 1019950030749 A KR1019950030749 A KR 1019950030749A KR 19950030749 A KR19950030749 A KR 19950030749A KR 970016899 A KR970016899 A KR 970016899A
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KR
South Korea
Prior art keywords
key search
key
search input
input signal
current
Prior art date
Application number
KR1019950030749A
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Korean (ko)
Other versions
KR0177089B1 (en
Inventor
조성민
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950030749A priority Critical patent/KR0177089B1/en
Publication of KR970016899A publication Critical patent/KR970016899A/en
Application granted granted Critical
Publication of KR0177089B1 publication Critical patent/KR0177089B1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/023—Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/02—Details
    • H03M11/04—Coding of multifunction keys
    • H03M11/06—Coding of multifunction keys by operating the multifunction key itself in different ways
    • H03M11/08—Coding of multifunction keys by operating the multifunction key itself in different ways by operating selected combinations of multifunction keys
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M11/00—Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
    • H03M11/20—Dynamic coding, i.e. by key scanning

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION

다수의 키가 설치된 키매트릭스부와 제어부를 포함하는 키 검색회로의 키검색방법에 관한 것이다.A key retrieval method of a key retrieval circuit including a key matrix unit and a control unit provided with a plurality of keys.

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

본 발명은 다수의 키가 설치된 키매트릭스부와 제어부를 포함하는 키검색회로의 키검색방법에 관한 것으로, 특히 상기 키매트릭스부에 입력된 키를 검색하기 위해 상기 제어부가 출력하는 키 검색펄스신호에 의해 발생되는 방사노이즈를 최소화한다.The present invention relates to a key retrieval method of a key retrieval circuit including a key matrix unit and a control unit provided with a plurality of keys. Minimize radiation noise caused by

3. 발명의 해결방법의 요지3. Summary of Solution to Invention

키검색펄스신호들을 모두 논리 하이상태로 출력하여 키검색입력신호들을 모두 저장하는 과정과; 상기 키검색입력신호들이 모두 논리 로우상태이면 상기 키입력퍽스들을 순차적으로 출력하여 검색된 해당 현재 키검색입력신호들을 저장하는 과정과; 상기 현재 키검색입력신호들이 정상이면 다음 키 검색상태로 세팅하고 상기 키검색펄스신호와 상기 현재 키검색입력신호들을 저장하는 과정과; 상기 다음 키검색상태이면 상기 저장된 키검색펄스신호와 현재 키검색입력신호를 출력하여 다음 키검색입력신호를 읽어 저장하는 과정과; 상기 현재 키검색입력신호와 상기 다음 키검색입력신호가 일치하면 상기 키검색펄스신호의 출력을 중지하고 상기 현재 키검색입력신호와 상기 다음 키검색입력신호가 일치하지 않으면 상기 키 검색펄스신호들을 발생하여 상기 키검색입력신호의 검사과정을 반복하는 과정으로 마련한다.Outputting all the key search pulse signals to a logic high state and storing all the key search input signals; If all of the key search input signals are in a logic low state, sequentially outputting the key input perks and storing the found current key search input signals; Setting the next key search state and storing the key search pulse signal and the current key search input signals if the current key search input signals are normal; Outputting the stored key search pulse signal and the current key search input signal when the next key search state is read and storing the next key search input signal; When the current key search input signal and the next key search input signal coincide with each other, the output of the key search pulse signal is stopped, and when the current key search input signal and the next key search input signal do not coincide, the key search pulse signals are generated. By repeating the inspection process of the key search input signal is prepared.

4. 발명의 중요한 용도4. Important uses of the invention

다수의 키가 설치된 키매트릭스부와 제어부를 포함하는 키검색회로의 키검색에 이용된다.It is used for key retrieval of a key retrieval circuit including a key matrix unit and a control unit provided with a plurality of keys.

Description

키검색방법Key Search Method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명에 따른 3×4 키매트릭스를 이용한 키검색회로의 구성도.4 is a block diagram of a key retrieval circuit using a 3x4 key matrix according to the present invention.

제5도는 본 발명에 따른 키검색펄스신호의 일례를 나타내는 파형도.5 is a waveform diagram showing an example of a key search pulse signal according to the present invention;

제6도는 본 발명에 따른 키검색방법을 나타내는 흐름도.6 is a flowchart showing a key retrieval method according to the present invention.

Claims (1)

다수의 키가 설치된 키매트릭스부와 제어부를 포함하는 키검색회로의 키검색방법에 있어서, 키검색펄스신호들을 모두 논리 하이상태로 출력하여 키검색입력신호들을 모두 저장하는 과정과; 상기 키검색입력신호들이 모두 논리 로우상태이면 상기 키입력펄스신호들을 순차적으로 출력하여 검색된 해당 현재 키검색입력신호들을 저장하는 과정과; 상기 현재 키검색입력신호들이 정상이면 다음 키검색상태로 세팅하고 상기 키검색펄스신호와 상기 현재 키검색입력신호들을 저장하는 과정과; 상기 다음 키검색상태이면 상기 저장된 키검색펄스신호와 현재 키검색입력신호를 출력하여 다음 키검색입력신호를 읽어 저장하는 과정과; 상기 현재 키검색입력신호와 상기 다음 키검색입력신호가 일치하면 상기 키검색펄스신호의 출력을 중지하고 상기 현재 키검색입력신호와 상기 다음 키검색입력신호가 일치하지 않으면 상기 키검색펄스신호들을 발생하여 상기 키검색입력신호의 검사과정을 반복하는 과정으로 이루어짐을 특징으로 하는 키검색방법.A key search method of a key search circuit including a key matrix unit and a control unit provided with a plurality of keys, the method comprising: outputting all key search pulse signals to a logic high state to store all key search input signals; If the key search input signals are all in a logic low state, sequentially outputting the key input pulse signals to store corresponding current key search input signals; Setting the next key search state if the current key search input signals are normal and storing the key search pulse signal and the current key search input signals; Outputting the stored key search pulse signal and the current key search input signal when the next key search state is read and storing the next key search input signal; When the current key search input signal and the next key search input signal coincide with each other, the output of the key search pulse signal is stopped, and when the current key search input signal and the next key search input signal do not coincide, the key search pulse signals are generated. And repeating the inspection process of the key retrieval input signal. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950030749A 1995-09-19 1995-09-19 Key detection method of radiation noise reduction KR0177089B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950030749A KR0177089B1 (en) 1995-09-19 1995-09-19 Key detection method of radiation noise reduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950030749A KR0177089B1 (en) 1995-09-19 1995-09-19 Key detection method of radiation noise reduction

Publications (2)

Publication Number Publication Date
KR970016899A true KR970016899A (en) 1997-04-28
KR0177089B1 KR0177089B1 (en) 1999-05-15

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KR1019950030749A KR0177089B1 (en) 1995-09-19 1995-09-19 Key detection method of radiation noise reduction

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Publication number Publication date
KR0177089B1 (en) 1999-05-15

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