KR880001152A - TV Proximity Prevention System for Vision Protection - Google Patents

TV Proximity Prevention System for Vision Protection Download PDF

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Publication number
KR880001152A
KR880001152A KR1019860000691A KR860000691A KR880001152A KR 880001152 A KR880001152 A KR 880001152A KR 1019860000691 A KR1019860000691 A KR 1019860000691A KR 860000691 A KR860000691 A KR 860000691A KR 880001152 A KR880001152 A KR 880001152A
Authority
KR
South Korea
Prior art keywords
circuit
viewing distance
chattering prevention
generating circuit
distance comparison
Prior art date
Application number
KR1019860000691A
Other languages
Korean (ko)
Other versions
KR890002390B1 (en
Inventor
박천호
Original Assignee
박천곤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 박천곤 filed Critical 박천곤
Priority to KR1019860000691A priority Critical patent/KR890002390B1/en
Publication of KR880001152A publication Critical patent/KR880001152A/en
Application granted granted Critical
Publication of KR890002390B1 publication Critical patent/KR890002390B1/en

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Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Electric Clocks (AREA)

Abstract

내용 없음No content

Description

시력보호를 위한 텔레비젼 근접시청 방지 장치TV Proximity Prevention System for Vision Protection

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

제4도는 본 발명의 블록도4 is a block diagram of the present invention.

Claims (1)

클록펄스 발생회로부(A)에서 임펄스 발생회로부(D)와 시청거리 비교판단 및 채터링 방지회로부(G)에 입력시켜서 임펄스 발생회로(D)와 초음파 신호 발생회로 (B)에서 초음파 증폭회로(C)를 통해 송파기(TR)에 연결하고 임펄스 발생회로(D)에서 수신시간 지연회로(E)와 시청거리 기준회로(F)를 통해 시청거리 비교판단 및 채터링 방지회로(G)에 입력시키고 또한 수신시간 지연회로(E)에서 수신 증폭회로(H)를 통해 시청거리 비교판단 및 채터링 방지회로(G)에서 작동신호 지연회로(I)와 작동해제회로(J)를 각각 통해 작동신호 지속회로(K)에 연결하고 이의 작동신호 지속회로(K)를 작동실행회로(M)에 입력시키며 정전압 전원회로(R)에서 초기작동 억제회로(L)를 통해 작동실행회로(M)에 직결하여서 이의 작동실행회로(M)를 텔레비젼의 콘트라스트 및 휘도 조절단자에 연결하여서 된 시력보호를 위한 텔레비젼 근접시청 방지 장치.The clock pulse generating circuit unit A is inputted to the impulse generating circuit unit D, the viewing distance comparison judgment, and the chattering prevention circuit unit G, so that the ultrasonic amplifying circuit C is output from the impulse generating circuit D and the ultrasonic signal generating circuit B. ) Is connected to the transmitter (TR) and input from the impulse generating circuit (D) to the viewing distance comparison determination and chattering prevention circuit (G) through the reception time delay circuit (E) and the viewing distance reference circuit (F). In addition, the receiving signal delay circuit (E) through the reception amplification circuit (H) in the viewing distance comparison judgment and chattering prevention circuit (G) through the operation signal delay circuit (I) and the deactivation circuit (J) respectively, the operation signal is continuous The operation signal continuity circuit K is inputted to the operation execution circuit M, and is directly connected to the operation execution circuit M through the initial operation suppression circuit L in the constant voltage power supply circuit R, Its operation execution circuit (M) is connected to the contrast and brightness control terminals of the television. Preventing television proximity viewing for visual protection. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860000691A 1986-02-01 1986-02-01 T.v. circuit for safety watching distance KR890002390B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860000691A KR890002390B1 (en) 1986-02-01 1986-02-01 T.v. circuit for safety watching distance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860000691A KR890002390B1 (en) 1986-02-01 1986-02-01 T.v. circuit for safety watching distance

Publications (2)

Publication Number Publication Date
KR880001152A true KR880001152A (en) 1988-03-31
KR890002390B1 KR890002390B1 (en) 1989-07-02

Family

ID=19248276

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860000691A KR890002390B1 (en) 1986-02-01 1986-02-01 T.v. circuit for safety watching distance

Country Status (1)

Country Link
KR (1) KR890002390B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9594945B2 (en) 2013-05-31 2017-03-14 Samsung Electronics Co., Ltd Method and apparatus for protecting eyesight

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9594945B2 (en) 2013-05-31 2017-03-14 Samsung Electronics Co., Ltd Method and apparatus for protecting eyesight

Also Published As

Publication number Publication date
KR890002390B1 (en) 1989-07-02

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E701 Decision to grant or registration of patent right
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