KR880001278Y1 - Data switching circuit in a remote control television - Google Patents
Data switching circuit in a remote control television Download PDFInfo
- Publication number
- KR880001278Y1 KR880001278Y1 KR2019850005845U KR850005845U KR880001278Y1 KR 880001278 Y1 KR880001278 Y1 KR 880001278Y1 KR 2019850005845 U KR2019850005845 U KR 2019850005845U KR 850005845 U KR850005845 U KR 850005845U KR 880001278 Y1 KR880001278 Y1 KR 880001278Y1
- Authority
- KR
- South Korea
- Prior art keywords
- remote control
- character
- data signal
- power
- power source
- 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
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Graphics (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Abstract
내용 없음.No content.
Description
도면은 본 고안의 실시예에 따른 회로도.Figure is a circuit diagram according to an embodiment of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 원격조정 IC 2 : 대기전원1: Remote Control IC 2: Standby Power
3 : 동작전원 4 : 문자발생 IC3: operating power supply 4: character generation IC
5 : 색신호 드라이브단 6 : 스위칭부5: color signal drive stage 6: switching unit
본 고안은 화면에 채널이나 시간등을 표시하는 문자 표시기능(On Screen)을 갖는 원격조정텔레비젼에 있어서, 전원단에 전원 트랜스를 사용하지 않을 경우 문자발생에 대한 데이타신호를 문자발생IC에 직접 인가시킬 때 발생되는 원격조정IC의 오동작을 방지하는 화면 문자발생 데이타 스위칭 회로에 관한 것이다.The present invention is a remote control TV having a character display function (On Screen) that displays a channel or time on the screen. When a power transformer is not used at the power supply terminal, a data signal for character generation is directly applied to the character generator IC. The present invention relates to a screen character generation data switching circuit which prevents malfunction of the remote control IC generated when the controller is operated.
화면 문자발생장치가 내장되어진 원격조정 수상기에서 원격조정IC는 필요전류가 낮은 MOS IC이므로 수상기를 켜기전의 데기상태에서 필요한 전원(이하 대기전원이라 한다)도 극히 낮다.In a remote control receiver with a built-in screen character generator, the remote control IC is a low-current MOS IC, so the power required in the dead state before turning on the receiver (hereinafter referred to as standby power) is extremely low.
종래의 원격조정수상기는 대기전원을 전원트랜스로부터 뽑아 쓰고 있는데, 상기한 바와같이 대기 전원을 공급할 필요는 없다.Conventional remote control receivers draw standby power from a power transformer, but it is not necessary to supply standby power as described above.
그러므로 전원코드로 부터 직접 교류 전원을 정류시켜 대기전원으로 사용하는 경우도 있다.Therefore, AC power may be rectified directly from the power cord and used as standby power.
이때, 문자표시를 화면화하기 위하여 문자발생IC에 이러한 대기전원을 공급시키면 문자발생IC의 전류소모는 원격조정IC보다 크므로 대기전원의 전류 공급만으로는 용량이 부족하다.At this time, if the standby power is supplied to the character generator IC to display the character display, the current consumption of the character generator IC is larger than that of the remote control IC.
따라서, 문자발생IC에는 수상기가 켜진 후에 공급되는 동작전원은 전원으로 사용하여야 한다.Therefore, in the character generator IC, the operating power supplied after the receiver is turned on should be used as the power source.
동작전원은 플라이 백 트랜스에서 발생되는 귀선 펄스를 정류한 직류 전원을 말한다.The operating power source is a direct current power source rectified by the return pulse generated from the flyback transformer.
그러나, 원격조정 대기상태에서 원격조정IC에서 출력되는 데이타 신호를 문자발생IC에 직접 인가시키면, 문자 발생IC에는 전원공급이 안된 상태이므로 원격조정IC에서 데이타신호 단자를 통해 문자발생IC로 전류가 빠져 나간다.However, if the data signal output from the remote control IC is directly applied to the character generator IC in the remote control standby state, the power is not supplied to the character generator IC, so current flows from the remote controller IC to the character generator IC through the data signal terminal. I'm going.
따라서, 원격조정IC의 상태에 이상이 생겨 원격조정IC가 오동작을 하게 된다.Therefore, the remote control IC may be in an abnormal state, causing the remote control IC to malfunction.
즉, 초기상태에 이상이 생기므로 동작 전원에 의해 문자발생IC에 전원이 공급되더라도 원격조정IC의 오동작이 발생되는 문제점이 있었다.That is, since an abnormal state occurs in the initial state, there is a problem that a malfunction of the remote control IC occurs even if the character generation IC is supplied with power by the operation power supply.
본 고안은 상기 문제점을 해결하기 위해 안출된 원격조정 수상기에 있어서 화면 문자 데이타 스윗칭 회로로서, 동작전원이 인가되고 문자발생IC에 전원이 공급된 다음원격조정IC에서 출력되는 데이타 신호를 문자발생IC에 인가하므로써 원격조정IC의 오동작을 방지하는 데 그 목적이 있다.The present invention is a screen character data switching circuit in a remote control receiver devised to solve the above problems, and is characterized in that a character generating IC generates a data signal output from a remote control IC after operating power is applied and power is supplied to the character generating IC. The purpose of this is to prevent the remote control IC from malfunctioning.
이하에 첨부된 도면에 의거하여 본 고안의 실시예를 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도면은 본 고안의 실시예에 따른 회로도로서, 전원코드로부터 교류전원을 정류시켜 사용하는 데 기전원(2)이 원격조정IC(1)에 인가된 상태에서 동작전원(3)을 문자발생IC(4)에 인가함과 동시에 스위칭부(6)에 인가하고, 원격조정IC(1)의 출력인 문자 데이타 신호를 스위칭부(6)를 통해 문자발생IC(4)에 인가하며, 문자발생IC(4)가 문자데이타신호를 해석하여 수상기의 색신호드라이브단(5)에 문자발생신호를 인가하므로써 CRT에 문자표시를 하도록 구성되었다.Figure is a circuit diagram according to an embodiment of the present invention, the rectifying AC power from the power cord for use in the operation power source 3 is a character generating IC ( 4) and at the same time to the switching unit 6, the character data signal output from the remote control IC (1) to the character generating IC (4) through the switching unit 6, the character generating IC ( 4) interprets the character data signal and applies the character generation signal to the color signal drive stage 5 of the receiver to display the character on the CRT.
상기 스위칭부(6)는 동작전원(3)이 문자발생IC(4)에 공급된 후 원격조정IC(1)에서 출력되는 데이타 신호가 문자발생IC(4)에 인가되도록 자항(R1)과 콘덴서(C1)로 구성된 지연부(61)와 동작전원의 전압이 문자발생IC(4)의 입력전압과 일치하도록 베이스에 인가되는 전압을 분배하는 전압분배부(62)를 트랜지스터(Q1)의 베이스에 연결하며, 콜렉터에 원격조정IC(1)에서 출력되는 문자데이타 신호를 인가하여서, 동작전원(3)이 문자발생IC(4)에 인가됨과 동시에 스위칭부(6)에 인가되면 지연부(61)와 전압분배부(62)를 통해 트린지스터(Q1)를 구동시키므로써 문자데이타신호가 트랜지스터(Q1)를 통해 문자발생IC(4)에 인가되도록 구성하였다.The switching unit 6 and the self-terminal (R 1 ) so that the data signal output from the remote control IC (1) after the operating power supply 3 is supplied to the character generator IC (4) is applied to the character generator IC (4) and The transistor Q 1 comprises a delay unit 61 composed of a capacitor C 1 and a voltage divider 62 for distributing the voltage applied to the base so that the voltage of the operating power source matches the input voltage of the character generator IC 4. Is connected to the base of the controller, and the character data signal output from the remote control IC 1 is applied to the collector so that the operation power source 3 is applied to the character generator IC 4 and the By driving the transistor Q 1 through the 61 and voltage divider 62, the character data signal is applied to the character generating IC 4 through the transistor Q 1 .
상기 구성된 본 고안의 동작을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.
먼저, 원격조정대기상태에서는 동작전원(3)이 스위칭부(6)에 인가되지 않으므로 트랜지스터(Q1)가 오프되어 원격조정IC(1)에서 출력되는 문자데이타신호가 문자발생IC(4)에 인가되지 않는다.First, since the operating power source 3 is not applied to the switching unit 6 in the remote control standby state, the transistor Q 1 is turned off, and the character data signal output from the remote control IC 1 is output to the character generating IC 4. Not authorized
따라서, 원격조정IC(1)의 데이타신호 단자에서 빠져나가는 전류가 없으므로 원격조정IC(1)의 초기상태는 정상이 되어 오동작이 발생되지 않는다.Therefore, since there is no current flowing out of the data signal terminal of the remote control IC 1, the initial state of the remote control IC 1 becomes normal and no malfunction occurs.
그러나, 수상기를 켜면 동작전원(3)이 공급되어 문자발생IC(4)에 전원이 공급됨과 동시에 스위칭부(6)에도 인가된다.However, when the receiver is turned on, the operating power source 3 is supplied to supply the power to the character generator IC 4 and simultaneously applied to the switching unit 6.
스위칭부(6)에 전원이 인가되면 지연부(61)를 통해 지연된 다음 저항(R2,R3)에 의해 분배되어 베이스에 인가되므로 트랜지스터(Q1)는 온이 된다.When power is applied to the switching unit 6, the transistor Q 1 is turned on because it is delayed through the delay unit 61 and then distributed by the resistors R 2 and R 3 and applied to the base.
트랜지스터(Q1)가 온이 되어 원격조정IC(1)에서 인가되는 문자 데이타신호가 문자발생IC(4)에 인가되므로 문자 데이타신호가 문자발생IC(4)에 인가되므로 문자발생IC(4)는 문자데이타 신호를 해석하여 수상기의 색신호 드라이브단(5)에 문자발생신호를 인가하므로써 CRT에 문자가 표시된다.Since the transistor Q 1 is turned on and the character data signal applied from the remote control IC 1 is applied to the character generator IC 4, the character data signal is applied to the character generator IC 4, so that the character generator IC 4 is applied. The character is displayed on the CRT by analyzing the character data signal and applying the character generation signal to the color signal drive stage 5 of the receiver.
종래의 화면에 문자표시를 하는 원격조정수상기에 있어서 전원단에 전원트랜스를 사용하지 않았을때 원격조정 대기상태에서 문자발생을 위한 데이타를 문자발생IC에 인가하면, 문자발생IC에 동작전원이 인가되지 않았기 때문에 원격조정IC에 오동작이 발생하였으나, 본 고안에 의하면 스위칭회로를 사용하여 동작전원이 인가되고 문자발생IC에 전원이 공급된 다음 원격조정IC에서 출력되는 데이타신호를 문자발생IC에 인가하므로써 원격조정IC의 오동작을 방지할 수 있다.In the remote control receiver which displays the characters on the conventional screen, when the power generation is not used at the power supply terminal, when the data for character generation is applied to the character generator IC in the remote control standby state, the operation power is not applied to the character generator IC. Since the remote control IC has malfunctioned, according to the present invention, the operation power is applied using the switching circuit, the character generator IC is supplied with power, and then the data signal output from the remote controller IC is applied to the character generator IC. Malfunction of the control IC can be prevented.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850005845U KR880001278Y1 (en) | 1985-05-20 | 1985-05-20 | Data switching circuit in a remote control television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850005845U KR880001278Y1 (en) | 1985-05-20 | 1985-05-20 | Data switching circuit in a remote control television |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860015533U KR860015533U (en) | 1986-12-30 |
| KR880001278Y1 true KR880001278Y1 (en) | 1988-04-02 |
Family
ID=19242238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850005845U KR880001278Y1 (en) | 1985-05-20 | 1985-05-20 | Data switching circuit in a remote control television |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR880001278Y1 (en) |
-
1985
- 1985-05-20 KR KR2019850005845U patent/KR880001278Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR860015533U (en) | 1986-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5944830A (en) | Reducing power consumption in monitor by switching off heater power in power-off mode | |
| KR870011793A (en) | Video Signal Processing and Display System | |
| KR880001278Y1 (en) | Data switching circuit in a remote control television | |
| KR970011529B1 (en) | Switching power supply | |
| JP3294020B2 (en) | Power control circuit and power supply system | |
| US4864481A (en) | Regulator for isolated chassis power supply | |
| KR0131517B1 (en) | Flyback transformer | |
| US5671016A (en) | High voltage discharge circuit for CRT | |
| KR970000259B1 (en) | Apparatus and method for controlling power of monitor | |
| KR0127157Y1 (en) | Automatic luminance limiting circuit by using micom | |
| KR940003249Y1 (en) | Front switching circuit of tv and av | |
| KR910007182Y1 (en) | Power source driving display circuit | |
| KR910005340Y1 (en) | Power supply stabilization circuit for horizontal deflecting circuit | |
| KR0140104Y1 (en) | Spot killer circuit | |
| KR920002448Y1 (en) | Stand-by morning circuit | |
| KR100598124B1 (en) | A power-saving circuit of a display system | |
| KR910005809Y1 (en) | Switching circuit | |
| KR910003424Y1 (en) | Power source controlling circuit | |
| KR910008623Y1 (en) | Main power source control circuit | |
| KR950007724Y1 (en) | Television-on indicator apparatus | |
| KR920000105Y1 (en) | Blanking circuit | |
| KR200225341Y1 (en) | Power Stabilization Circuits for Horizontal and Vertical Processors | |
| KR100528146B1 (en) | Power supply apparatus | |
| KR200161114Y1 (en) | Circuit for screen stabilizer | |
| KR200221122Y1 (en) | Voltage control circuit using power transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 19970327 Year of fee payment: 10 |
|
| LAPS | Lapse due to unpaid annual fee |