KR940000954A - Key input device - Google Patents

Key input device Download PDF

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Publication number
KR940000954A
KR940000954A KR1019920010613A KR920010613A KR940000954A KR 940000954 A KR940000954 A KR 940000954A KR 1019920010613 A KR1019920010613 A KR 1019920010613A KR 920010613 A KR920010613 A KR 920010613A KR 940000954 A KR940000954 A KR 940000954A
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KR
South Korea
Prior art keywords
key
key signal
input device
analog
output
Prior art date
Application number
KR1019920010613A
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Korean (ko)
Other versions
KR0150957B1 (en
Inventor
김낙석
Original Assignee
강진구
삼성전자 주식회사
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Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019920010613A priority Critical patent/KR0150957B1/en
Publication of KR940000954A publication Critical patent/KR940000954A/en
Application granted granted Critical
Publication of KR0150957B1 publication Critical patent/KR0150957B1/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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

본 발명은 키입력장치에 관한것으로, 특히 시스템 컨트롤러의 키입력포트를 감소시킬 수 있는 키입력장치에 관한것이다.The present invention relates to a key input device, and more particularly to a key input device that can reduce the key input port of the system controller.

복수의 키를 구비하고, 하나의 출력단자에 각 키에 대응하는 서로다른 전압값을 각 키의 키신호로 출력하는 키신호 발생수단과 키신호 발생수단의 출력단자에 그의 입력단자가 접속되어 입 력되는 키신호의 전압값에 대응하는 디지탈신호를 하나의 출력단자에 직렬출력하는 아날로그-디지탈 변환기와 아날로그-디지탈변환기의 직렬출력을 입력해서 대응하는 키신호를 인식하는 키신호 판단수단을 구비한다. 따라서 키 값을 입력으로 받기위해 하나의 포트만을 필요하므로 포트의 수를 절약할 수 있는 효과가 있다.A key signal generating means having a plurality of keys and outputting a different voltage value corresponding to each key to one output terminal as a key signal of each key and its input terminal connected to an output terminal of the key signal generating means And a key signal determination means for inputting a serial output of an analog-digital converter and an analog-digital converter for serially outputting a digital signal corresponding to a voltage value of an output key signal to one output terminal and recognizing a corresponding key signal. . Therefore, since only one port is needed to receive key value, the number of ports can be saved.

Description

키입력장치Key input device

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

제3도는 본 발명에 따른 키입력장치의 블럭도.3 is a block diagram of a key input device according to the present invention.

Claims (6)

복수의 키를 구비하고, 하나의 출력단자에 각 키에 대응하는 서로다른 전압값을 각 키의 키신호로 출력하는 키신호 발생수단(20), 상기 키신호 발생수단(20)의 출력단자에 그의 입력단자가 접속되어 입력되는 키신호의 전압값에 대응하는 디지탈신호를 하나의 출력단자에 직렬출력하는 아날로그-디지탈변환기 (30) , 상기 아날로그 디지탈변환기의 직렬출력을 입력해서 대응하는 키신호를 인식하는 키신호 관단수단(40)을 구비한 것을 특징으로 하는 키입력장치.A key signal generating means 20 having a plurality of keys and outputting a different voltage value corresponding to each key to one output terminal as a key signal of each key, and to an output terminal of the key signal generating means 20 An analog-digital converter 30 for serially outputting a digital signal corresponding to a voltage value of a key signal inputted by its input terminal to one output terminal, and inputting a serial output of the analog digital converter to provide a corresponding key signal. Key input device characterized in that it comprises a key signal observation means (40). 제1항에 있어서, 상기 키신호 발생수단 (20)은 제 1전원단자와 상기 출력단자 사이에 병렬접속된 복수의 저항 및 키스위치의 직렬연결됨 ; 상기 출력단자와 제2전원단자 사이에 접속된 기준저항을 구비하고, 상기 복수의 저항들은 서로 다른 저항값을 가지는 것을 특징으로 하는 키입력장치.2. The apparatus according to claim 1, wherein the key signal generating means (20) is connected in series with a plurality of resistors and key switches connected in parallel between a first power supply terminal and the output terminal; And a reference resistor connected between the output terminal and the second power supply terminal, wherein the plurality of resistors have different resistance values. 제1항에 있어서, 상기 아날로그-디지탈변환기(30)는 상기 키신호 발생수단(20)에서 출력되는 전압값을 미리 설정된 기준레벨값과 비교하여 하이레벨 혹은 로우레벨값으로 출력하기 위한 비교수단(31), 상기 비교수단(31)에서 출력된 값을 코딩하기위한 인코더(32), 상기 인코더 (32)에서 병렬출력되는 값을 직렬출력하기 위한 PISO(33)로 구성됨을 특징으로 하는 키입력장치.The method of claim 1, wherein the analog-to-digital converter 30 compares the voltage value output from the key signal generating means 20 with a preset reference level value and outputs a high level or low level value. 31, a key input device comprising an encoder 32 for coding a value output from the comparing means 31, and a PISO 33 for serially outputting values output in parallel from the encoder 32. . 제1항에 있어서, 상기 아날로그-디지탈변환기(30)의 해상도(m)는 N+1≤2m(여기서 N은 키수)을 만족하는 것을 특징으로 하는 키입력장치.2. The key input device according to claim 1, wherein the resolution (m) of the analog-to-digital converter (30) satisfies N + 1 ≦ 2 m , where N is the number of keys. 제3항에 있어서, 상기 비교수단(31)은 복수 개의 비교기로 구성됨을 특징으로 하는 키입력장치4. The key input device according to claim 3, wherein the comparing means (31) comprises a plurality of comparators. 제1항에 있어서, 상기 아날로그-디지탈변환기(30) 및 키신호 판단수단(40)은 원칩 시스템 컨트롤러 내에 구비된 것을 특징으로 하는 키입력장치.2. The key input device according to claim 1, wherein the analog-to-digital converter (30) and the key signal determination means (40) are provided in a one-chip system controller. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920010613A 1992-06-18 1992-06-18 Key input device KR0150957B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920010613A KR0150957B1 (en) 1992-06-18 1992-06-18 Key input device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920010613A KR0150957B1 (en) 1992-06-18 1992-06-18 Key input device

Publications (2)

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KR940000954A true KR940000954A (en) 1994-01-10
KR0150957B1 KR0150957B1 (en) 1998-10-15

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KR1019920010613A KR0150957B1 (en) 1992-06-18 1992-06-18 Key input device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030075734A (en) * 2002-03-20 2003-09-26 주식회사 엘지이아이 A key input circuit of microwave oven
US6901143B1 (en) 1999-01-11 2005-05-31 Nec Corporation Voice switching system capable of improving a quality of conversation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6901143B1 (en) 1999-01-11 2005-05-31 Nec Corporation Voice switching system capable of improving a quality of conversation
KR20030075734A (en) * 2002-03-20 2003-09-26 주식회사 엘지이아이 A key input circuit of microwave oven

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Publication number Publication date
KR0150957B1 (en) 1998-10-15

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