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KR920001160B1 - On-screen text recording circuit during video tape recorder recording - Google Patents

On-screen text recording circuit during video tape recorder recording Download PDF

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KR920001160B1
KR920001160B1 KR1019880009550A KR880009550A KR920001160B1 KR 920001160 B1 KR920001160 B1 KR 920001160B1 KR 1019880009550 A KR1019880009550 A KR 1019880009550A KR 880009550 A KR880009550 A KR 880009550A KR 920001160 B1 KR920001160 B1 KR 920001160B1
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screen
signal
recording
video
color
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KR900002290A (en
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우종삼
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삼성전자 주식회사
안시환
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/032—Electronic editing of digitised analogue information signals, e.g. audio or video signals on tapes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/026—Control of operating function, e.g. switching from recording to reproducing by using processor, e.g. microcomputer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals

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  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

내용 없음.No content.

Description

비데오 테이프 레코오더 녹화시 온스크린문자 녹화회로On-screen text recording circuit during video tape recorder recording

제1도는 본 발명에 따른 온스크린문자 발생회로도.1 is an on-screen character generation circuit diagram according to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

11 : 마이콤 12 : 온스크린회로11: Micom 12: On Screen Circuit

13,14 : 제1,2비디오스위칭부 15 : 멀티플랙서13,14: first and second video switching unit 15: multiplexer

본 발명은 비디오 테이프 레코오더(Video Tape Recorder : 이하 VTR이라 함)에 관한 것으로, 특히 온스크린 문자를 선별하여 녹화하는 회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video tape recorder (hereinafter referred to as a VTR), and more particularly to a circuit for selecting and recording on-screen characters.

통상적으로 VTR에 있어서 다른 VTR이나 캠코오더(Camcoder)로부터 입력되는 비디오 신호를 녹화할시 녹화되고 있는 화면상에 필요한 온스크린 문자정보를 같이 녹화하기 위해 사용자가 스크린상에 온스크린 문자정보를 표시할 위치를 지정한 다음 온스크린 문자정보를 입력시키면 VTR은 스크린상의 지정된 위치에 입력한 온스크린 문자정보를 테이프에 기록하면서 캐소드 레이튜브(Cathode Ray Tube : 이하 CRT라 함)에 디스플레이 한다. 이때 상기 VTR은 외부로부터 입력되는 비디오 신호 녹화시 상용자가 입력한 온스크린 위치정보와 셔터(Shutter)표시, 발런스(Balance)표시, 전원표시, 모드(Mode)표시들까지 함께 녹화하는 문제점이 있었다.In general, when recording a video signal input from another VTR or camcorder in a VTR, the user may display on-screen character information on the screen to record on-screen character information necessary on the screen being recorded. After specifying the location and inputting the on-screen text information, the VTR displays the on-screen text information entered at the designated location on the screen on the tape and displays it on the cathode ray tube (hereinafter referred to as CRT). At this time, the VTR has a problem of recording on-screen position information, shutter display, balance display, power display, and mode display input by a commercial user when recording a video signal input from the outside.

따라서, 본 발명의 목적은 VTR의 녹화시 온스크린 문자정보를 선별하여 테이프에 기록할 수 있는 온스크린 문자 녹화회로를 제공함에 있다.Accordingly, an object of the present invention is to provide an on-screen character recording circuit which can select and record on-screen character information during recording of a VTR on a tape.

상기 목적을 달성하기 위하여 본 발명은 기록해야할 온스크린 문자정보와 기록하지 않아야할 온스크린 문자 정보를 색상으로 구분한 다음, 온스크린 문자정보에 따라서 색신호를 발생한 후, 상기 색신호에 따라 온스크린 문자정보에 대한 색신호를 비디오 신호에 부가하거나 부가하지 않은 기록용 비디오 신호를 발생하는 한편, 온스크린 문자정보에 대한 상기 색신호를 비디오 신호에 부가하여 디스플레이하기 위한 모니터용 비디오 신호를 발생함을 특징으로 한다.In order to achieve the above object, the present invention classifies on-screen character information to be recorded and on-screen character information not to be recorded into color, and then generates a color signal according to the on-screen character information, and then generates on-screen character information according to the color signal. Generate a video signal for recording with or without adding a color signal to the video signal, and generate a monitor video signal for display by adding the color signal for on-screen character information to the video signal.

이하 본 발명을 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

제1도는 본 발명에 따른 온스크린 문자 발생회로도로서, 키보드(10)로부터 온스크린 문자정보를 입력하여 기록해야할 온스크린 문자정보인가를 검사한 다음 상기 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보와 스트로브 신호를 전송 클럭에 맞추어 출력하는 마이콤(11)과, 상기 마이콤(11)으로부터 출력되는 전송클럭에 동기된 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보를 스트로브 신호에 의해 입력한 다음 상기 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보에 해당하는 레드(Red : 이하 R이라 함). 그린(Green : 이하 G이라 함), 블루우(Blue : 이하 B라함)로 된 색신호와 제1스위칭 제어신호를 발생하여 동기분리부로부터 인가되는 수직 및 수평동기신호에 맞추어 출력하는 온스크린회로(12)와, 상기 온스크린회로(12)로부터 R,G,B와 제1스위칭 제어신호(9)를 입력하고, 외부 입력단자(IT)로부터 비디오신호를 입력하여 상기 제1스위칭 제어신호(19)에 따라 스위칭 작동을 함으로써 상기 비디오 신호에 R,G,B를 부가한 모니터용 비디오 신호를 발생하여 CRT로 출력하는 제1비디오 스위칭부(13)와, 상기 온스크린회로(12)로부터 입력되는 온스크린 문자에 대한 R,G,B 색신호를 외부 입력단자(IT)로부터 인가되는 비디오신호에 혼합하거나 혼합하지 않도록 제어하기 위한 스위칭작동을 함으로써, R,GB 색신호를 부가시킨 제1기록용 비디오신호 혹은 R,G,B 색신호가 부가되지 않은 제2기록용 비디오 신호를 발생하여 기록부로 출력하는 제2비디오스우칭부(14)와, 일정 논리상태를 갖는 제1-8 기록 제어신호를 상기 온스크린 회로(12)로부터 제1-3선택단자들로 인가되는 R,G,B 색신호의 논리상태에 따라 선택하여 상기 제2비디오 스위칭부(14)로 출력함으로써 상기 제2비디오 스위칭부(14)의 스위칭 작동을 제어하는 멀티플렉서(15)로 구성된다.1 is an on-screen character generation circuit diagram according to the present invention, inputs on-screen character information from the keyboard 10 and checks whether it is on-screen character information to be recorded, and then colors on the on-screen character information and on-screen character information. A microcomputer 11 for outputting information and a strobe signal in accordance with a transmission clock, and color information for on-screen text information and on-screen text information synchronized with a transmission clock output from the microcomputer 11 by a strobe signal. Next, red corresponding to the on-screen text information and color information of the on-screen text information (Red: hereinafter referred to as R). An on-screen circuit that generates a color signal of green (hereinafter referred to as G) and blue (hereinafter referred to as B) and a first switching control signal and outputs it in accordance with the vertical and horizontal synchronous signals applied from the synchronous separator ( 12, the R, G, B and the first switching control signal 9 are inputted from the on-screen circuit 12, and the first switching control signal 19 is inputted by inputting a video signal from an external input terminal IT. A first video switching unit 13 for generating a monitor video signal having R, G, and B added to the video signal and outputting the CRT to the CRT and the on-screen circuit 12 The first recording video signal to which the R, GB color signal is added by performing a switching operation for controlling the R, G, B color signal for the on-screen character to be mixed or not mixed with the video signal applied from the external input terminal IT. Or R, G, B color signal is not added Selects from the on-screen circuit 12 a second video switching unit 14 for generating a second recording video signal and outputting it to the recording unit, and a 1-8 recording control signal having a predetermined logic state from the on-screen circuit 12; Selected according to the logic state of the R, G, B color signals applied to the terminals and output to the second video switching unit 14 to the multiplexer 15 to control the switching operation of the second video switching unit 14 It is composed.

상술한 제1도를 참조하여 본 발명을 상세히 설명한다.The present invention will be described in detail with reference to FIG.

키보드로부터 온스크린 문자정보를 입력하는 마이콤(11)은 미리 프로그램된 온스크린 문자정보 분류 프로그램에 의해 상기 온스크린 문자정보가 기록해야할 문자정보인가 검사한 다음 문자정보의 내용에 따른 색상 데이터를 발생하고, 상기 온스크린 문자정보와 색상 데이터를 자체내에서 발생되어 라인(1)상으로 출력되고 있는 전송클럭에 동기시켜 라인(2)으로 출력한 후 라인(3)을 통해 스트로브 신호를 출력한다.The microcomputer 11 for inputting on-screen character information from the keyboard checks whether the on-screen character information is character information to be recorded by using a pre-programmed on-screen character information classification program, and then generates color data according to the contents of the character information. In addition, the on-screen character information and color data are generated in itself and output to the line 2 in synchronization with the transmission clock being output on the line (1) and then outputs a strobe signal through the line (3).

상기 마이콤(11)으로부터 라인(11)상의 전송클럭에 동기된 라인(2)상의 온스크린 문자정보 및 색상 데이터를 라인(3)을 통해 인가되는 스트로브 신호에 의해 입력하는 온스크린회로(12)눈 상기 색상 데이타에 해당하는 색상과 상기 온스크린 문자정보 형태를 갖는 R,G,B 색신호를 발생하여 동기분리부로부터 라인(4,5)을 통해 인가되는 수평 및 수직동기신호에 맞추어 라인(6-8)을 통해 출력하는 한편, 라인(9)으로는 제1스위칭제어신호를 발생하여 제1비디오 스위칭부(13)로 출력한다.On-screen circuit 12 for inputting on-screen character information and color data on line 2 synchronized with the transmission clock on line 11 from the micom 11 by a strobe signal applied through line 3 Generates R, G, and B color signals having a color corresponding to the color data and the on-screen character information, and generates a line (6-) in accordance with the horizontal and vertical synchronization signals applied through the lines 4 and 5 from the synchronization separator. 8), the first switching control signal is generated through the line 9 and output to the first video switching unit 13.

이때 상기 제1비디오스위칭부(13)는 상기 라인상(9)을 통해 인가되는 제1스위칭제어신호의 논리상태의 변화에 따라 스위칭작동을 함으로써 외부입력단자(IT)를 통해 입력되는 비디오신호만을 CRT 모니터로 출력하거나, 세라인(6-8)을 통해 입력되는 R,G,B 색신호를 상기 비디오 신호에 혼합하여 온스크린 문자정보가 부가된 모니터용 비디오신호를 발생하여 CRT로 출력하게 된다.In this case, the first video switching unit 13 switches only in response to a change in the logic state of the first switching control signal applied through the line 9 so that only the video signal input through the external input terminal IT is applied. The R, G, and B color signals inputted through the CRT monitor or mixed through the thin lines 6-8 are mixed with the video signal to generate a monitor video signal to which on-screen character information is added and output to the CRT.

한편 상기 세라인(6-8)을 통해 제1-3 선택단자로, R,G,B 색신호를 입력하는 멀티플랙서(15)는 상기 R,G,B 색신호의 논리값에 따라 제1-8입력단자로 입력되는 각 색상에 해당하는 제1-8기록 제어신호중 상기 R,G,B 색신호의 논리값에 해당하는 기록 제어신호 하나를 선택하여 라인(10)을 통해 제2비디오스위칭부(14)로 인가한다. 그러면 상기 멀티플랙서(15)로부터 라인(10)을 통해 기록 제어신호를 입력하는 제2비디오 스위칭부(14)는 상기 기록 제어신호의 논리상태에 따라 스위칭동작을 함으로써 세라인(6-8)을 통해 입력하는 R,G,B 색신호를 외부 입력단자(IT)를 통해 입력되는 비디오 신호에 혼합하거나 혼합하지 않고 상기 비디오 신호만을 출력하여 온스크린 문자 정보가 부가되거나 부가되지 않은 기록용 비디오 신호를 발생하여 기록부로 송출한다.On the other hand, the multiplexer 15 for inputting R, G, and B color signals to the 1-3 select terminal through the thin lines 6-8 is selected according to a logic value of the R, G, and B color signals. A second video switching unit may be selected through the line 10 by selecting one recording control signal corresponding to a logic value of the R, G, and B color signals among the first through eighth recording control signals corresponding to each color inputted through the eight input terminals. 14). Then, the second video switching unit 14, which inputs the write control signal from the multiplexer 15 through the line 10, performs the switching operation according to the logic state of the write control signal. R, G, and B color signals inputted through the video signal input through the external input terminal (IT) or not mixed with the output video signal only to the recording video signal with or without on-screen character information It is generated and sent to the recorder.

구체적으로 설명하면, 예를들어 상기 멀티플랙서(15)의 출력(10)이 1이면 녹화하고 0이면 녹화를 하지 않도록 제2비디오 스위칭부(14)를 제어한다고 가정하고 각 색상 표시에 따를 상기 멀티플렉서(15) 출력(10)의 일예를 표로 나타내면 하기 [표 1]과 같다.Specifically, for example, it is assumed that the output 10 of the multiplexer 15 controls the second video switching unit 14 to record when 1 and to record when 0, and according to each color display. An example of the multiplexer 15 output 10 is shown in Table 1 below.

Figure kpo00001
Figure kpo00001

상기 [표 1]에서 (D0)-(D7)는 각각 상기 멀티플랙서(15)의 입력을 의미하는 것으로 만약 R,G,B가 0,0,0이면 상기 멀티플랙서(15)의 입력중 “0”상태인 (D0)입력이 출력된다는 것을 나타내고 있다. 또한 상기 [표 1]에서는 8가지 색상중 5가지 색상을 갖는 문자만이 녹화 가능하도록 되어 있으나 이것은 상기 멀티플랙서(15)의 구성을 변경하여 임의로 조정가능함은 주지의 사실이다.In Table 1, (D0)-(D7) means the input of the multiplexer 15, respectively, if R, G, B is 0, 0, 0 input of the multiplexer 15 Indicates that (D0) input of "0" state is output. In addition, in Table 1, only characters having five colors out of eight colors can be recorded, but it is well known that this can be arbitrarily adjusted by changing the configuration of the multiplexer 15.

이와 같은 방법으로 각 문자의 색상에 따라 멀티플렉서(15)에서 0혹은 1의 상태를 갖는 출력 신호(10)를 발생하여 제2비디오 스위칭부(14)로 전달하면 상기 제2비디오 스위칭부(14)에서는 이 신호(10)의 상태가 1이면 온스크린 회로(12)에서 공급되는 R,G,B신호와 비디오 입력을 혼합하여 기록부로 전달함으로써 온스크린 디스플래이되는 문자가 녹화될 수 있도록 한다. 반면에 상기 신호(10)의 상태가 0이면 상기 R,G,B신호가 비디오 입력과 혼합되지 않도록 제어하여 상기 기록부는 비디오 신호만을 전달함으로써 온 스크린 디스플래이되는 문자가 녹화되지 않도록 제어한다. 이때 상기 R,G,B신호와 비디오 입력을 혼합하여 테이프에 기록하는 방법은 공지의 사실이므로 기록부에서 실시되는 구체적인 녹화 동작에 관한 설명은 생략하며, 본 발명에 있어서 상기 제2비디오 스위칭부(14)의 주요 기능은 다만 혼합 여부에 따른 스위칭 동작을 실시하는 것에 있음을 밝힌다.In this manner, when the output signal 10 having the state of 0 or 1 is generated by the multiplexer 15 according to the color of each character and transmitted to the second video switching unit 14, the second video switching unit 14 When the state of the signal 10 is 1, the R, G, and B signals supplied from the on-screen circuit 12 and the video input are mixed and transmitted to the recording unit so that the on-screen displayed characters can be recorded. On the other hand, if the state of the signal 10 is 0, the R, G, and B signals are controlled not to be mixed with the video input, and the recording unit controls only the video signal to be recorded so that the on-screen display characters are not recorded. In this case, since a method of mixing the R, G, and B signals with a video input and recording a tape is known in the art, a description of a specific recording operation performed in the recording unit is omitted, and the second video switching unit 14 according to the present invention is omitted. Its main function is to carry out the switching operation according to mixing.

상술한 바와 같이 본 발명은 온스크린 문자정보를 선별적으로 비디오 신호에 삽입 녹화함으로써 필요한 문자정보만을 녹화할 수 있는 이점과, 상기 이점으로 간결하고 깨끗한 비디오 신호를 녹화할 수 있는 효과도 아울러 얻을 수 있다.As described above, according to the present invention, the on-screen character information can be selectively recorded in a video signal to record only the necessary character information, and the above-described advantage can also be obtained to record a simple and clean video signal. have.

Claims (1)

비디오 테이프 레코오더의 녹화회로에 있어서, 키보드(10)로부터 온스크린 문자정보를 입력하여 기록해야 할 온스크린 문자정보인가를 검사한 다음 상기 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보와 스트로브 신호를 전송 클럭에 맞추어 출력하는 마이콤(11)과, 상기 마이콤(11)으로부터 출력되는 전송클럭에 동기된 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보를 스트로브 신호에 의해 입력한 다음 상기 온스크린 문자정보 및 온스크린 문자정보에 대한 색상정보에 해당하는 R,G,B로 된 색신호와 제 1스위칭 제어신호를 발생하여 동기분리부로부터 인가되는 수직 및 수평동기 신호에 맞추어 출력하는 온스크린회로(12)와, 상기 온스크린회로(12)로부터 R,G,B와 제1스위칭 제어신호(9)를 입력하고, 외부 입력단자(IT)로부터 비디오 신호를 입력하여 상기 제1스위칭 제어신호(9)에 따라 스위칭 작동을 함으로써 상기 비디오 신호에 R,G,B를 부가한 모니터용 신호를 발생하여 CRT로 출력하는 제1비디오 스위칭부(13)와, 상기 온스크린회로(12)로부터 입력되는 온 스크린 문자에 대한 R,G,B 색신호를 외부 입력단자(IT)로부터 인가는 비디오 신호에 혼합하거나 혼합하지 않도록 제어하기 위한 스위칭작동을 함으로써 R,G,B 색신호를 부가시킨 제1기록용 비디오 신호 혹은 R,G,B 색신호가 부가되지 않은 제2기록용 비디오 신호를 발생하여 기록부로 출력하는 제2비디오 스위칭부(14)와, 일정 논리상태를 갖는 제1-8기록 제어신호를 상기 온스크린회로(12)로부터 제1-3선택단자들로 인가되는 R,G,B 색신호의 논리상태에 따라 선택하여 상기 제2비디오 스위칭부(14)로 출력함으로써 상기 제2비디오 스위칭부(14)의 스위칭 작동을 제어하는 멀티플렉서(15)로 구성함을 특징으로 하는 온스크린 문자 녹화회로.In the recording circuit of the videotape recorder, the on-screen character information to be recorded by inputting the on-screen character information from the keyboard 10 is checked and then the color information and strobe for the on-screen character information and the on-screen character information are checked. The microcomputer 11 outputs a signal in accordance with the transmission clock, and the on-screen character information and color information of the on-screen character information synchronized with the transmission clock output from the microcomputer 11 are input by the strobe signal. On-screen circuit that generates color signals of R, G, and B and first switching control signals corresponding to color information about screen text information and on-screen text information, and outputs them in accordance with vertical and horizontal synchronization signals applied from the synchronization separator. 12, R, G, B and first switching control signals 9 are input from the on-screen circuit 12, and video is input from an external input terminal IT. A first video switching unit 13 which inputs a signal and performs a switching operation according to the first switching control signal 9 to generate a monitor signal having R, G, and B added to the video signal, and output the signal to a CRT; R, G, B color signals for the on-screen characters input from the on-screen circuit 12 is applied from an external input terminal (IT) by switching operation to control the mixing or not mixed with the video signal R, G, And a second video switching unit 14 for generating a first recording video signal to which the B color signal is added or a second recording video signal to which the R, G and B color signals are not added, and outputting the same to the recording unit. The first to eighth write control signals are selected from the on-screen circuit 12 to the second video switching unit 14 according to the logic states of the R, G and B color signals applied to the first to third selection terminals. Outputting the second video switching unit 14 On-screen character recording circuit, characterized in that consisting of a multiplexer (15) for controlling the switching operation of the).
KR1019880009550A 1988-07-28 1988-07-28 On-screen text recording circuit during video tape recorder recording Expired KR920001160B1 (en)

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Application Number Priority Date Filing Date Title
KR1019880009550A KR920001160B1 (en) 1988-07-28 1988-07-28 On-screen text recording circuit during video tape recorder recording

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KR920001160B1 true KR920001160B1 (en) 1992-02-06

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