KR950001999B1 - Method of searching tv channel automatically - Google Patents
Method of searching tv channel automatically Download PDFInfo
- Publication number
- KR950001999B1 KR950001999B1 KR1019910020722A KR910020722A KR950001999B1 KR 950001999 B1 KR950001999 B1 KR 950001999B1 KR 1019910020722 A KR1019910020722 A KR 1019910020722A KR 910020722 A KR910020722 A KR 910020722A KR 950001999 B1 KR950001999 B1 KR 950001999B1
- Authority
- KR
- South Korea
- Prior art keywords
- band
- channel
- vhf
- search
- searching
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/036—Radio; TV
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/05—Mode selector switch, e.g. shift, or indicator
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
Description
제1도는 종래의 채널 서치시스템의 블록도.1 is a block diagram of a conventional channel search system.
제2도는 제1도의 시스템에서의 플로우챠트.2 is a flowchart in the system of FIG.
제3도는 본 발명을 구현하는 밴드별 서치시스템의 블록도.3 is a block diagram of a band-by-band search system implementing the present invention.
제4도는 본 발명의 플로우챠트.4 is a flowchart of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 마이콤 12 : 튜너/중간주파단10: Micom 12: Tuner / Intermediate Frequency Break
14 : 자동미동조검출기 16 : 동기검출기14: automatic fine tuning detector 16: synchronous detector
18 : 밴드선택모드스위치18: band select mode switch
본 발명은 티브이(TV)세트의 방송채널 자동서치(Serach)방법에 관한 것으로, 특히 사용자의 요구에 따라 서치모드가 밴드별로 실행되게 하여 채널서치시간을 단축시켜 줄 수 있는 티브이밴드별 자동서치방법에 관한 것이다.The present invention relates to a broadcast channel automatic search (Serach) method of a TV (TV) set, and in particular, the TV band automatic search method that can reduce the channel search time by running the search mode for each band according to the user's request It is about.
종래의 티브이 자동채널서치 방법은 사용자의 프로그램 버튼에 의해 VHF "L", VHF "H", UHF의 전 밴드가 서치되도록 설정함에 따라 서치속도의 단축에 한계가 따르고 있었다.The conventional TV automatic channel search method has a limitation in reducing the search speed by setting all the bands of the VHF VLF, VHF VH, and UHF to be searched by the user's program button.
이러한 기존의 채널서치는 제1도와 같은 하드웨어 구성을 통하여 달성시키고 있다.This conventional channel search is achieved through the hardware configuration as shown in FIG.
제1도에서는 마이콤(10)의 위상고정루프(PLL)데이터, 클럭 및 인에이블 신호가 튜너/중간주파(IF)단(12)에 제어신호로 공급되게 하고, 상기 튜너/중간주파단(12)의 자동미동조신호(AFT)와 동기신호를 끌어내 각각 자동미동조검출기(14)와 동기검출기(16)로 검출시켜 이들 신호를 다시 마이콤(10)으로 피이드백 되게 구성하고 있다.In FIG. 1, the PLL data, the clock, and the enable signal of the microcomputer 10 are supplied to the tuner / intermediate (IF) stage 12 as a control signal, and the tuner / intermediate frequency stage 12 The automatic fine tuning signal (AFT) and the synchronizing signal are extracted and detected by the automatic fine tuning detector 14 and the synchronization detector 16, respectively, and these signals are fed back to the microcomputer 10.
따라서, 채널 서치 모드의 실행 명령어 마이콤(10)에 프로그램 버튼을 통하여 입력되면, 마이콤(10)은 피이드백 되어 입력되는 동기검출기(16)로부터 하이레벨의 동기신호를 받아 그때의 채널을 메모리에 저장하고, 그외의 신호에서는 스킵하여 방송채널을 찾아내게 된다.(제2도 참조)Therefore, when the execution command of the channel search mode is input to the microcomputer 10 through the program button, the microcomputer 10 receives the high-level synchronization signal from the synchronization detector 16 which is fed back and inputs and stores the channel in the memory. The other channels are skipped to find a broadcast channel (see also FIG. 2).
그러나, 이와 같은 종래의 서치방법은 장시간의 서치시간을 요구한다.However, such a conventional search method requires a long search time.
왜냐하면, 한 번의 서치실행명령에 의해 모든 티브이방송밴드(VHF "L", VHF "H", UHF)를 순차 서치하기 때문이다.This is because all TV broadcast bands (VHF "L", VHF "H U, UHF) are sequentially searched by one search execution command.
본 발명은 상기와 같은 채널서치시간의 지연을 최소화 할 수 있는 새로운 방송채널 서치방법을 제안한다.The present invention proposes a new broadcast channel search method that can minimize the delay of the channel search time as described above.
본 발명의 핵심은 티브이방송밴드별 모드선택키(스위치)입력에 따라 사용자가 희망하는 밴드별로 채널 서치가 실행되고, 종료되도록 하는 밴드별 채널 서치방법에 있다.The core of the present invention is a channel search method for each channel so that the channel search is executed for each band desired by the user according to a mode selection key (switch) input for each TV broadcast band.
이하 첨부한 도면에 기초하여 본 발명을 설명한다.Hereinafter, the present invention will be described based on the accompanying drawings.
본 발명의 실행을 위한 하드웨어적 구성은 제3도와 같다. 여기에서 알 수 있는 바와 같이 본 발명에 따른 서치시스템은 기존의 서치시스템에 밴드선택모드스위치(18)를 부가하고 있다.Hardware configuration for the implementation of the present invention is shown in FIG. As can be seen here, the search system according to the present invention adds the band selection mode switch 18 to the existing search system.
이 밴드선택모드스위치(18)는 마이콤(10)에 사용자에 의한 VHF "L", VHF "H", UHF밴드등의 밴드별 선택신호를 제공하게 된다.The band selection mode switch 18 provides the microcomputer 10 with a band-specific selection signal such as a VHF VLF, VHF VHH, UHF band, or the like.
제3도와 제4도에 기초하여 본 발명의 밴드별 채널 서치방법을 상세히 설명하면 다음과 같다.Referring to the channel search method for each band of the present invention based on FIG. 3 and FIG. 4 as follows.
마이콤(10)의 위상고정루프(PLL)데이터, 클럭 및 인에이블 신호를 각 VHF "L", VHF "H", UHF밴드별로 구분하고, 외부의 밴드선택모드스위치(18)의 키입력에 따라 밴드별로 서치를 수행하여, 동기신호 즉, 방송신호가 있으면 종래와 같이 자동미동조검출기(14)에 의한 AFT(+)(-)동작과 동기검출기(16)에 의한 동기검출동작을 통하여 마이콤(10)으로 전달하게 된다.Phase-locked loop (PLL) data, clock, and enable signals of the microcomputer 10 are divided into VHF VLF, VHF VH, and UHF bands, according to the key input of the external band selection mode switch 18. If a search is performed for each band, and there is a synchronization signal, that is, a broadcast signal, the microcomputer (AFT (+) (-)) by the auto-tuning detector 14 and the synchronization detection operation by the synchronization detector 16 are conventionally operated. 10).
마이콤(10)은 이러한 동기검출 신호가 압력되면 이때의 채널을 메모리시키고 스톱한다.The microcomputer 10 memorizes and stops the channel at this time when the synchronous detection signal is pressed.
그러나, 상기 밴드선택모드스위치(18)의 키입력이 없으면 전 밴드에 걸쳐 자동서치를 실행하여 방송 채널을 전부 메모리하고 스톱한다.However, if there is no key input of the band selection mode switch 18, automatic search is performed over all bands to completely memorize and stop all broadcast channels.
구체적으로, 밴드선택모드스위치(18)의 키입력이 없으면 마이콤(10)은 모든 채널 서치 모드로 설정되어 VHF "L", VHF "H", UHF의 전밴드에 걸쳐 채널서치를 실행하여 동기신호가 있으면 해당 채널을 메모리하고, 동기신호가 없으면 스킵한다.Specifically, if there is no key input of the band selection mode switch 18, the microcomputer 10 is set to all channel search modes to perform channel search over all bands of VHF VLF, VHF VHH and UHF to synchronize signals. If present, the channel is memorized. If there is no sync signal, it skips.
이후 설정 채널과 비교한 후 설정채널이면 종료하고 아니면 해당채널 +1을 하여 다시 채널 서치를 실행한다.After that, after comparing with the setting channel, if it is a setting channel, it ends. Otherwise, the corresponding channel is +1 and channel search is executed again.
상기 설정채널은 최초의 채널 서치 스타트시의 채널을 말하므로 한번의 전채널에 걸쳐 모든 채널을 서치완료하면 종료하게 된다.Since the set channel refers to a channel at the start of the first channel search, it ends when all channels are searched over one channel.
한편, 상기 밴드선택모드스위치(18)의 밴드선택키입력이 있으면, 가령 밴드선택모드스위치(18)의 VHF밴드선택키입력이 있으면, VHF "L", "H"채널을 설정하고 UHF 밴드채널을 스킵하여 상기와 같이 채널서치를 실행한다.On the other hand, if there is a band selection key input of the band selection mode switch 18, for example, if there is a VHF band selection key input of the band selection mode switch 18, the VHF 'L' and 'H' channels are set and the UHF band channel is set. Skip to execute channel search as above.
또한 밴드선택모드스위치(18)의 VHF "L"밴드선택키 입력이 있으면, VHF "L"채널을 설정하고 VHF "H"와 UHF 밴드채널은 스킵하여 상기와 같이 채널서치를 실행한다.If the VHF 'L' band selection key input of the band selection mode switch 18 is input, the VHF 'L' channel is set and the VHF 'H' and UHF band channels are skipped to perform channel search as described above.
기타 밴드선택모드스위치(18)의 VHF "H", UHF밴드선택키입력에서도 해당밴드의 채널만 서치하게 된다.Other channels of the corresponding band are also searched for in the VHF VHH and UHF band selection key inputs of the other band selection mode switch 18.
따라서, 본 발명은 주파수 합성방식에서 티브이채널의 오토서치시간을 사용자 선택에 따라 현저히 줄일 수 있는 특유의 효과가 나타나게 된다.Therefore, the present invention exhibits a unique effect of significantly reducing the auto search time of the TV channel in accordance with the user selection in the frequency synthesis method.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910020722A KR950001999B1 (en) | 1991-11-20 | 1991-11-20 | Method of searching tv channel automatically |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910020722A KR950001999B1 (en) | 1991-11-20 | 1991-11-20 | Method of searching tv channel automatically |
Publications (2)
Publication Number | Publication Date |
---|---|
KR930011673A KR930011673A (en) | 1993-06-24 |
KR950001999B1 true KR950001999B1 (en) | 1995-03-08 |
Family
ID=19323161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910020722A KR950001999B1 (en) | 1991-11-20 | 1991-11-20 | Method of searching tv channel automatically |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR950001999B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100302501B1 (en) * | 1998-12-03 | 2001-11-22 | 구자홍 | Broadcasting method switching method |
-
1991
- 1991-11-20 KR KR1019910020722A patent/KR950001999B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR930011673A (en) | 1993-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR950001999B1 (en) | Method of searching tv channel automatically | |
JP3286359B2 (en) | RF converter output channel automatic setting device | |
KR930008469B1 (en) | Window searching frequency synthesis tunning method | |
KR960010498B1 (en) | Frequency division tuning method without method selection switch | |
KR100681579B1 (en) | Method for searching a channel in a broadcasting receiving | |
KR0147985B1 (en) | Method for automatically searching channel | |
KR100259614B1 (en) | Overlap channel detection/deletion method | |
KR920000887B1 (en) | Channel selecting circuit | |
KR0127530B1 (en) | Automatic channel switching method using color-killer signal | |
KR950007721Y1 (en) | Improved channel search tunning system in tvcr | |
KR19980058810A (en) | Channel tuning method of video equipment | |
KR0134275B1 (en) | Tv power control method by using color killer signal | |
JP3019327B2 (en) | Tuning circuit | |
JPH08172586A (en) | Automatic channel selection device | |
KR960006535B1 (en) | Channel selecting method | |
KR0127529B1 (en) | Automatic channel searching method using color-killer | |
KR920010038B1 (en) | Method of selecting tv broad casting of vtr mode switched | |
KR960028314A (en) | High speed search apparatus for broadcasting channel of 2-tuner television | |
KR100205822B1 (en) | Method for auto fine tuning in tuner | |
KR19980041342A (en) | Synchronization signal detection method for channel tuning of video equipment | |
KR19980016423A (en) | How to fine tune your channel | |
KR19980031551A (en) | High speed channel search method using forced skip | |
KR970025033A (en) | Automatic channel setting method of TV receiver | |
KR19980023519A (en) | How to fine tune your channel | |
KR20000040871A (en) | Method for scanning automatically channels of television with pip capability |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
AMND | Amendment | ||
E601 | Decision to refuse application | ||
J2X1 | Appeal (before the patent court) |
Free format text: APPEAL AGAINST DECISION TO DECLINE REFUSAL |
|
G160 | Decision to publish patent application | ||
B701 | Decision to grant | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20070221 Year of fee payment: 13 |
|
LAPS | Lapse due to unpaid annual fee |