KR970009288A - Sub-screen shape inverter - Google Patents

Sub-screen shape inverter Download PDF

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Publication number
KR970009288A
KR970009288A KR1019950022210A KR19950022210A KR970009288A KR 970009288 A KR970009288 A KR 970009288A KR 1019950022210 A KR1019950022210 A KR 1019950022210A KR 19950022210 A KR19950022210 A KR 19950022210A KR 970009288 A KR970009288 A KR 970009288A
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KR
South Korea
Prior art keywords
sub
screen
signal
blanking
microcomputer
Prior art date
Application number
KR1019950022210A
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Korean (ko)
Other versions
KR0150538B1 (en
Inventor
정희석
Original Assignee
배순훈
대우전자 주식회사
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Priority to KR1019950022210A priority Critical patent/KR0150538B1/en
Publication of KR970009288A publication Critical patent/KR970009288A/en
Application granted granted Critical
Publication of KR0150538B1 publication Critical patent/KR0150538B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4023—Scaling of whole images or parts thereof, e.g. expanding or contracting based on decimating pixels or lines of pixels; based on inserting pixels or lines of pixels
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Television Systems (AREA)

Abstract

본 발명은 부화면용 블랭킹신호를 가변시켜 CRT상에 디스플레이되는 부화면의 형태를 바꾸어줌으로써 시청자의 시청효율을 극대화시킬 수 있도록 한 부화면 모양 변환장치를 제공하기 위한 것이다.The present invention is to provide a sub-screen shape converting apparatus that can maximize the viewing efficiency of the viewer by changing the shape of the sub-screen displayed on the CRT by varying the blanking signal for the sub-screen.

이를 위해 본 발명은, 부화면의 모양변환을 설정하기 위한 모드설정키(20)와; 상기 모드설정키(20)에 의한 모드설정여부에 따라 부화면의 모양변환동작을 제어하는 마이컴(22); 소정의 클럭신호를 발생하는 클럭발생부(24); 상기 마이컴(22)의제어하에 상기 클럭발생부(24)로부터 클럭신호와 주화면용 수평/수직동기신호 및 사각형 부화면용 블랭킹신호를 기초로새로운 부화면용 블랭킹신호를 가변적으로 생성시키는 블랭킹펄스폭가변부(26); 상기 마이컴(22)의 제어하에 상기 사각형 부화면용 블랭킹신호와 상기 블랭킹펄스폭가변부(26)로부터의 가변블랭킹신호중에서 어느 한 신호를 스위칭출력하는스위칭부(28)및; 상기 스위칭부(28)로부터의 블랭킹신호에 부화면 R.G.B 신호를 가하여 CRT상에 디스플레이시키는 주·부화면스위칭부(10)로 구성된 것이다.To this end, the present invention, the mode setting key 20 for setting the shape conversion of the sub-screen; A microcomputer 22 for controlling the shape conversion operation of the sub-screen according to whether the mode is set by the mode setting key 20; A clock generator 24 for generating a predetermined clock signal; A blanking pulse for variably generating a new sub-screen blanking signal based on the clock signal, the horizontal / vertical synchronization signal for the main screen, and the blanking signal for the rectangular sub-screen from the clock generator 24 under the control of the microcomputer 22. Variable width section 26; A switching unit (28) for switching and outputting any one of the blanking signal for the rectangular sub-screen and the variable blanking signal from the blanking pulse width variable section (26) under the control of the microcomputer (22); The main / sub picture switching unit 10 is configured to apply a sub picture R.G.B signal to the blanking signal from the switching unit 28 and display the same on the CRT.

Description

부화면 모양 변환장치Sub-screen shape inverter

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

제2도는 본 발명의 일실시예에 따른 부화면 모양 변환장치의 블럭구성도.2 is a block diagram of a sub-screen shape converting apparatus according to an embodiment of the present invention.

Claims (4)

부화면의 모양변환을 설정하기 위한 모드설정키(20)와 ;상기 모드설정키 (20)에 의한 모드설정여부에 따라 부화면의 모양변환동작을 제어하는 마이컴(22); 소정의 클럭신호를 발생하는 클럭발생부(24); 상기 마이컴(22)의 제어하에 상기 클럭발생부(24)로부터의 클럭신호와 주화면용 수평/수직동기신호 및 사각형 부화면용 블랭킹신호를 기초로새로운 부화면용 블랭킹신호를 가변적으로 생성시키는 블랭킹펄스폭가변부(26); 상기 마이컴(22)의 제어하에 상기 사각형 부화면용 블랭킹신호와 상기 블랭킹펄스폭가변부(26)로부터의 가변블랭킹신호중에서 어느 한 신호를 스위칭출력하는 수위칭부(28)및; 상기 스위칭부(28)로부터의 블랭킹신호에 부화면 R.G.B 신호를 가하여 CRT 상에 디스플레이시키는 주·부화면스위칭부(10)로 구성된 것을 특징으로 하는 부화면 모양 변환장치.A mode setting key 20 for setting the shape of the sub-screen; and a microcomputer 22 for controlling the shape conversion operation of the sub-screen according to whether the mode is set by the mode setting key 20; A clock generator 24 for generating a predetermined clock signal; Blanking to variably generate a new sub-screen blanking signal based on the clock signal from the clock generator 24, the horizontal / vertical synchronization signal for the main screen, and the blanking signal for the rectangular sub-screen under the control of the microcomputer 22. A pulse width variable portion 26; A leveling unit 28 for switching and outputting any one of the blanking signal for the rectangular sub-screen and the variable blanking signal from the blanking pulse width variable unit 26 under the control of the microcomputer 22; And a sub picture switching unit (10) configured to apply a sub picture R.G.B signal to a blanking signal from the switching unit (28) to display on a CRT. 제1항에 있어서, 상기 마이컴(22)은 부화면 모양 변환모드시 부화면상의 소정의 기준라인까지는 상기 클럭발생부(24)로부터 클럭신호를 기초 펄스퍽이 순차적으로 소정폭씩 넓혀지면서 출력된 블랭킹신호를 생성하도록 상기 블랭킹펄스폭가변부(26)를 제어하고, 상기 기준라인이후부터는 상기 클럭발생부(24)로부터의 클럭신호를 기초로 펄스폭이 순차적으로 소정폭씩 좁혀지면서 출력되는 블랭킹신호를 생성하도록 상기 블랭킹펄스가변부(26)를 제어하는 것을 특징으로하는 부화면 모양 변환장치.The blanking device of claim 1, wherein the microcomputer 22 outputs a clock signal from the clock generator 24 to the predetermined reference line on the sub-screen in the sub-screen shape conversion mode, while the basic pulse puck is sequentially widened by a predetermined width. The blanking pulse width variable part 26 is controlled to generate a signal, and after the reference line, the blanking signal is outputted while the pulse width is sequentially narrowed by a predetermined width based on the clock signal from the clock generator 24. And controlling the blanking pulse variable part (26) to generate. 제2항에 있어서, 상기 부화면상의 기준라인은 총라인수의 1/2라인인 것을 특징으로 하는 부화면 모양 변환장치.The sub-screen shape converting apparatus of claim 2, wherein the reference line on the sub-screen is 1/2 line of the total number of lines. 제1항에 있어서, 상기 주·부화면스위칭부(10)를 통해 CRT상에 디스플레이되는 부화면은 원모양을 이루는것을 특징으로 하는 부화면 모양 변환장치.The sub-screen shape converting apparatus according to claim 1, wherein the sub-screen displayed on the CRT through the main / sub-screen switching unit (10) forms a circle. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950022210A 1995-07-26 1995-07-26 Sub-screen form changing apparatus KR0150538B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950022210A KR0150538B1 (en) 1995-07-26 1995-07-26 Sub-screen form changing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950022210A KR0150538B1 (en) 1995-07-26 1995-07-26 Sub-screen form changing apparatus

Publications (2)

Publication Number Publication Date
KR970009288A true KR970009288A (en) 1997-02-24
KR0150538B1 KR0150538B1 (en) 1998-10-15

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KR1019950022210A KR0150538B1 (en) 1995-07-26 1995-07-26 Sub-screen form changing apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100677192B1 (en) * 2000-01-07 2007-02-02 엘지전자 주식회사 Picture in picture display apparatus for digital tv
KR20010081301A (en) * 2000-02-11 2001-08-29 구자홍 Method for displaying sub image in digital television

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