KR980007453A - A driving circuit for a thermal printer head - Google Patents

A driving circuit for a thermal printer head Download PDF

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Publication number
KR980007453A
KR980007453A KR1019960024916A KR19960024916A KR980007453A KR 980007453 A KR980007453 A KR 980007453A KR 1019960024916 A KR1019960024916 A KR 1019960024916A KR 19960024916 A KR19960024916 A KR 19960024916A KR 980007453 A KR980007453 A KR 980007453A
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KR
South Korea
Prior art keywords
signal
latch
output
outputting
control unit
Prior art date
Application number
KR1019960024916A
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Korean (ko)
Other versions
KR0182175B1 (en
Inventor
김천호
Original Assignee
김광호
삼성전자 주식회사
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Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960024916A priority Critical patent/KR0182175B1/en
Publication of KR980007453A publication Critical patent/KR980007453A/en
Application granted granted Critical
Publication of KR0182175B1 publication Critical patent/KR0182175B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
    • H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Electronic Switches (AREA)

Abstract

이 발명은 감열 인쇄 헤드용 구동 회로에 관한 것으로, 순차적으로 입력되는 직렬 입력 데이터를 클럭 신호에 따라서 시프트시킨 후, 병렬 형태로 n-비트의 데이터를 출력하기 위한 시프트 레지스터와, 래치 시점을 제어하기 위한 래치 클럭 신호가 인가되면, 상기 시프트 레지스터로부터 전송된 데이터를 래치하기 위한 래치부와, 출력 인에이블 신호와 전원 전압 검출 회로로부터 입력된 검출 신호를 조합하여 상기 두 신호가 모두로우상태일 때 최종 출력 단자를 인에이블시키기 위한 신호를 출력하는 출력 인에이블 제어부와, 상기 출력 인에이블 제어로부터 인에이블 신호가 인가되었을 때, 상기 래치부로부터 전송되 n-비트의 데이터를 반전시켜 출력하는 출력 제어부와, 상기 출력 제어부의 출력 신호에 의해서 온/오프되어 감열 인쇄 헤드용 구동 신호를 출력하는 구동부를 포함하여 구성되었으며, 구동 신호를 출력하는 단자수를 증가시켜 사용되는 전체 칩의 수를 감소시키므로 소형 및 경량으로 모듈을 구현할 수 있는 감열 인쇄 헤드용 구동 회로에 관한 것이다.The present invention relates to a driving circuit for a thermal head, and more particularly, to a driving circuit for a thermal head which comprises a shift register for shifting serial input data sequentially input in accordance with a clock signal and outputting n-bit data in parallel form, A latch for latching the data transferred from the shift register when a latch clock signal for applying the latch clock signal is applied, and a latch circuit for combining the detection signal input from the output enable signal and the power supply voltage detecting circuit, An output control unit for inverting and outputting n-bit data transmitted from the latch unit when the enable signal is applied from the output enable control, , And is turned on / off by the output signal of the output control unit, Has been configured to include a driver for outputting a call, it reduces the total number of chips that are used to increase the number of terminals for outputting a drive signal directed to a thermal printing head drive circuit capable of implementing the module to the small size and light weight.

Description

감열 인쇄 헤드용 구동 회로A driving circuit for a thermal printer head

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 이 발명의 실시예에 따른 감열 인쇄 헤드(Thermal Print Head)용 구동 회로의 구성도.FIG. 1 is a configuration diagram of a drive circuit for a thermal print head according to an embodiment of the present invention; FIG.

제2도는 이 발명의 실시예에 따른 감열 인쇄 헤드용 구동 회로의 타이밍도이다.FIG. 2 is a timing chart of a driving circuit for a thermal printer head according to an embodiment of the present invention; FIG.

Claims (1)

순차적으로 입력되는 직렬 입력 데이터를 클럭 신호에 따라서 시프트시킨 후, 병렬 형태로 n-비트의 데이터를 출력하기 위한 시프트 레지스터와; 래치 시점을 제어하기 위한 래치 클럭 신호가 인가되면, 상기 시프트 레지스터로부터 전송된 데이터를 래치하기 위한 래치부와; 출력 인에이블 신호와 전원 전압 검출 회로로부터 입력된 검출 신호를 조합하여 상기 두 신호가 모두 로우상태일 때 최종 출력 단자를 인에이블시키기 위한 신호를 출력하는 출력 인에이블 제어부와; 상기 출력 인에이블 제어부로부터 인에이블 신호가 인가되었을 때, 상기 래치부로부터 전송된 n-비트의 데이터를 반전시켜 출력하는 출력 제어부와; 상기 출력 제어부의 출력 신호에 의해서 온/오프되어 감열 인쇄 헤드용 구동 신호를 출력하는 구동부를 포함하여 이루어져 있는 감열 인쇄 헤드용 구동 회로.A shift register for shifting sequentially input serial input data according to a clock signal and outputting n-bit data in a parallel form; A latch for latching data transferred from the shift register when a latch clock signal for controlling a latch time is applied; An output enable controller that combines an output enable signal and a detection signal input from a power supply voltage detection circuit to output a signal for enabling a final output terminal when both the signals are in a low state; An output control unit for inverting and outputting n-bit data transmitted from the latch unit when an enable signal is applied from the output enable control unit; And a driving unit for turning on / off by an output signal of the output control unit and outputting a driving signal for the thermal printing head.
KR1019960024916A 1996-06-28 1996-06-28 Thermal head driving circuit KR0182175B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960024916A KR0182175B1 (en) 1996-06-28 1996-06-28 Thermal head driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960024916A KR0182175B1 (en) 1996-06-28 1996-06-28 Thermal head driving circuit

Publications (2)

Publication Number Publication Date
KR980007453A true KR980007453A (en) 1998-03-30
KR0182175B1 KR0182175B1 (en) 1999-05-01

Family

ID=19464141

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960024916A KR0182175B1 (en) 1996-06-28 1996-06-28 Thermal head driving circuit

Country Status (1)

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KR (1) KR0182175B1 (en)

Also Published As

Publication number Publication date
KR0182175B1 (en) 1999-05-01

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