KR960016397A - Broadcast Channel Memory Circuit in Television - Google Patents
Broadcast Channel Memory Circuit in Television Download PDFInfo
- Publication number
- KR960016397A KR960016397A KR1019940027596A KR19940027596A KR960016397A KR 960016397 A KR960016397 A KR 960016397A KR 1019940027596 A KR1019940027596 A KR 1019940027596A KR 19940027596 A KR19940027596 A KR 19940027596A KR 960016397 A KR960016397 A KR 960016397A
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- channel
- broadcast
- tuner
- input
- Prior art date
Links
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
- H04N5/50—Tuning indicators; Automatic tuning control
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- 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
-
- 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
- H04N5/52—Automatic gain control
Landscapes
- 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)
- Circuits Of Receivers In General (AREA)
Abstract
본 발명은 방송채널자동검색모도시 수신강도가 양호한 상태의 방송채널만을 메모리할 수 있도록 된 텔레비전에서의 방송채널 메모리회로를 제공한다.The present invention provides a broadcast channel memory circuit in a television in which only a broadcast channel having a good reception strength can be stored.
이를 위해 본 발명은, 키입력부(40)로부터의 채널에 대환 키입력신호에 따라 튜너(11)가 마이콤(20)으로부터 소정의 시간간격을 두고 순차적으로 송출되는 채널 데이터에 의해 채널을 선국하고 방송신호가 있는 채널만 메모리하는 방송채널 자동검색모드를 갖춘 텔레비전에 있어서, 그 제1입력단자로 현재 상기 튜너(11)에 의해 선국된 채널의 방송신호를 보상하기 위해 상기 튜너(11)로부터 출력되는 자동이득 제어신호(AGC신호)를 입력받고 그 제2입력단자로 복합영상신호가 입력될 경우에 방송신호가 있다는 것을 나타내기 위한 소정의 인식신호(ID신호)를 입력받아 상기 튜너(11)로부터의 자동이득제어 신호레벨이 제로레벨에 근사이고 상기 영상처리부(13)로부터의 인식신호가 있는 경우(즉 하이레벨상태)에만 상기 마이콤(20)의 제어부(21)로 소정의 제어신호를 송출하는 신호판별부(30)를 구비하여 구성된다.To this end, according to the present invention, the channel is tuned by the channel data sequentially transmitted by the tuner 11 at a predetermined time interval from the microcomputer 20 in accordance with the exchange key input signal to the channel from the key input unit 40 and broadcast. In a television having a broadcast channel auto search mode in which only a channel containing a signal is memorized, the first input terminal is output from the tuner 11 to compensate for a broadcast signal of a channel currently tuned by the tuner 11. When the automatic gain control signal (AGC signal) is input and the composite video signal is input to the second input terminal, the tuner 11 receives a predetermined recognition signal (ID signal) to indicate that there is a broadcast signal. The control gain of the microcomputer 20 is controlled by the control unit 21 of the microcomputer 20 only when the signal level of the automatic gain control signal is approximated to zero and there is a recognition signal from the image processor 13 (that is, the high level state). It is comprised by the signal discrimination part 30 which sends a call.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 따른 텔레비전에서의 방송채널 메모리회로의 주요부의 구성 및 그 동작흐름을 설명하기 위한 블록도이다,1 is a block diagram for explaining the configuration and operation flow of main parts of a broadcast channel memory circuit in a television according to the present invention.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940027596A KR0124405B1 (en) | 1994-10-27 | 1994-10-27 | Broadcasting channel memory in television |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019940027596A KR0124405B1 (en) | 1994-10-27 | 1994-10-27 | Broadcasting channel memory in television |
Publications (2)
Publication Number | Publication Date |
---|---|
KR960016397A true KR960016397A (en) | 1996-05-22 |
KR0124405B1 KR0124405B1 (en) | 1997-12-01 |
Family
ID=19396091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019940027596A KR0124405B1 (en) | 1994-10-27 | 1994-10-27 | Broadcasting channel memory in television |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0124405B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100406985B1 (en) * | 2001-08-11 | 2003-11-28 | 삼성전자주식회사 | Television displaying a searched channel during auto search, and a method for displaying searched channel of the same |
-
1994
- 1994-10-27 KR KR1019940027596A patent/KR0124405B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100406985B1 (en) * | 2001-08-11 | 2003-11-28 | 삼성전자주식회사 | Television displaying a searched channel during auto search, and a method for displaying searched channel of the same |
Also Published As
Publication number | Publication date |
---|---|
KR0124405B1 (en) | 1997-12-01 |
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A201 | Request for examination | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20080901 Year of fee payment: 12 |
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LAPS | Lapse due to unpaid annual fee |