KR950010373Y1 - Vcr simultaneous recording system - Google Patents

Vcr simultaneous recording system Download PDF

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Publication number
KR950010373Y1
KR950010373Y1 KR2019900011122U KR900011122U KR950010373Y1 KR 950010373 Y1 KR950010373 Y1 KR 950010373Y1 KR 2019900011122 U KR2019900011122 U KR 2019900011122U KR 900011122 U KR900011122 U KR 900011122U KR 950010373 Y1 KR950010373 Y1 KR 950010373Y1
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South Korea
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vcr
amplifier stage
input signal
antenna
splitter
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KR2019900011122U
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KR920003273U (en
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이종진
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삼성전기 주식회사
서주인
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

내용 없음.No content.

Description

VCR 시스템VCR system

제1도는 종래의 VCR 시스템의 블록다이어그램.1 is a block diagram of a conventional VCR system.

제2도는 본 고안의 VCR 시스템의 실시예에 대한 블록 다이어그램.2 is a block diagram of an embodiment of a VCR system of the present invention.

제3도는 본 고안의 VCR 시스템의 다른 실시예에 대한 블록 다이어그램.3 is a block diagram of another embodiment of a VCR system of the present invention.

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

10,14 : RF 증폭단 12 : RF 스플리터10,14: RF amplifier stage 12: RF splitter

16 : RF 스플리터 18 : RF 모듈레이터16: RF splitter 18: RF modulator

SB1 : 동시녹화/수신/재생 선택전압 SB2 : TV 수신 선택전압SB1: Simultaneous recording / reception / playback selection voltage SB2: TV reception selection voltage

B2 : VCR 재생선택 전압B2: VCR playback selection voltage

본 고안은 VCR 시스템에 관한 것으로 특히 VCR로 녹화중에 안테나로 부터의 RF 신호가 VCR의 튜너를 통하여 TV RF 단에 동시에 입력됨으로써 VCR의 RF 신호와 안테나로 부터의 RF 신호의 상호간섭에 의한 혼신을 배제시킬 수 있는 VCR 시스템에 관한 것이다.The present invention relates to a VCR system. In particular, the RF signal from the antenna is simultaneously input to the TV RF stage through the tuner of the VCR while recording to the VCR, thereby preventing interference from the RF signal of the VCR and the RF signal from the antenna. A VCR system can be excluded.

종래의 VCR 시스템은 제1도에 나타내고 있는 바와같이 1차 RF 증폭단(10)에서 증폭된 안테나로 부터의 RF 방송신호가 RF 스풀리터(12)에서 나뉘어져 일부는 VCR의 튜너로 입력되게 구성하고 일부는 2차 RF 증폭단(14)과 RF 믹서(16)를 거쳐 TV의 RF 입력단으로 인가되게 구성되며, VCR에서 재생된 영상/음성 신호는 RF 모듈레이터(18)와 상기 RF 믹서(16)를 거쳐 TV RF 입력단으로 인가되게 구성하고 있다. 여기에서 1,2차 RF 증폭단(10,14)은 RF 증폭단 전원전압(B1+)으로 온/오프 제어되게 하고, RF 모듈레이터(18)는 모듈레이터 전원전압(B2+)으로 온/오프 제어되게 하고 있다.In the conventional VCR system, as shown in FIG. 1, the RF broadcast signal from the antenna amplified by the primary RF amplifier stage 10 is divided by the RF spool liter 12, and a part is configured to be input to the tuner of the VCR. Is configured to be applied to the RF input terminal of the TV via the secondary RF amplifier stage 14 and the RF mixer 16, and the video / audio signal reproduced in the VCR is passed through the RF modulator 18 and the RF mixer 16 to the TV. It is configured to be applied to the RF input terminal. Here, the first and second RF amplifier stages 10 and 14 are controlled to be turned on and off by the RF amplifier stage power supply voltage B1 +, and the RF modulator 18 is controlled to be controlled on and off by the modulator power supply voltage B2 +.

따라서 TV 방송수신중 타채널 동시녹화시에는 상기 전원전압(B1+) 및 전원전압(B2+)이 동시에 발생되므로 1차 RF 증폭단(10), RF 스플리터(12), 2차 RF 증폭단(14), RF 믹서(16)를 차례로 거친 안테나 입력 신호에 의해 TV 방송을 수신하면서 1차 RF 증폭단(10), RF 스풀리터(12)를 거친 입력 신호로는 해당수신 채널 또는 타채널 방송을 VCR 튜너로 선택하여 동시 녹화하는 것이 가능하게 된다.Therefore, when simultaneously recording other channels during TV broadcasting, the power voltage B1 + and power voltage B2 + are generated at the same time, so that the primary RF amplifier stage 10, the RF splitter 12, the secondary RF amplifier stage 14, RF While receiving the TV broadcast by the antenna input signal which passed through the mixer 16 in sequence, the input signal passed through the primary RF amplifier stage 10 and the RF spool liter 12 was selected as a VCR tuner as a corresponding reception channel or another channel broadcast. Simultaneous recording becomes possible.

그러나, 상기한 바와같은 기존의 VCR 시스템에서는 TV 방송수신 및 동시녹화 모드에서는 VCR의 영상/음성 입력신호와 1,2차 RF 증폭단(10,14) 및 RF 스플리터(12)를 거친 안테나 입력신호가 RF 믹서(16)에 동시에 인가되므로 상호간섭에 의한 혼신에 의해 TV 화질에 악영향을 미치는 경우가 발생한다.However, in the conventional VCR system as described above, in the TV broadcast reception and simultaneous recording mode, the video / audio input signal of the VCR and the antenna input signal passing through the 1st and 2nd RF amplifier stages 10 and 14 and the RF splitter 12 are displayed. Since it is simultaneously applied to the RF mixer 16, there is a case that adversely affects the TV picture quality due to interference caused by mutual interference.

본 고안의 목적은 기존의 VCR 튜너를 통하여 TV 방송수신중 동시 녹화 모드에서 발생하는 VCR RF 신호와 TV 방송 RF 신호와의 간섭현상을 간단한 회로 변경을 통하여 완전히 배제시킬 수 있는 VCR 시스템을 제공하는데 있다.An object of the present invention is to provide a VCR system that can completely eliminate the interference between the VCR RF signal and the TV broadcast RF signal generated in the simultaneous recording mode during TV broadcast reception through a conventional VCR tuner. .

이하, 첨부한 도면을 참고로 하여 본 고안의 실시예를 상세하게 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

제2도에서 도시하고 있는 바와같이 본 고안의 RF 신호 전송 체계는 기존의 RF 신호 전송 체계와 동일하게 구성되고 있다. 즉1차 RF 증폭단(10), RF 스플리터(12), 2차 RF 증폭단(14), RF 믹서(16)를 차례로 거친 안테나 입력신호는 TV RF 입력단으로 인가되게 연결하고, 상기 1차 RF 증폭단(10), RF 스플리터(12)를 거친 안테나 입력신호는 VCR 튜너로 인가되게 연결하고, 또한 RF 모듈레이터(18)와 RF 믹서(16)를 거친 VCR의 영상/음성 신호는 TV측의 RF 입력단으로 인가되게 연결하고 있다.As shown in FIG. 2, the RF signal transmission system of the present invention is configured in the same manner as the existing RF signal transmission system. That is, the antenna input signal which passes through the primary RF amplifier stage 10, the RF splitter 12, the secondary RF amplifier stage 14, and the RF mixer 16 in turn is applied to the TV RF input stage, and the primary RF amplifier stage ( 10), the antenna input signal via the RF splitter 12 is connected to the VCR tuner, and the video / audio signal of the VCR via the RF modulator 18 and the RF mixer 16 is applied to the RF input terminal of the TV side. I'm connected.

여기에서 1차 RF 증폭단(10)은 동시녹화/수신/재생 선택전압(SB1+)으로 제어되게 구성하고, 2차 RF 증폭단(14)은 TV 수신 선택전압(SB2+)으로 제어되게 구성하고, RF 모듈레이터(18)는 VCR 재생 및 동시녹화 선택전압(SB2+)으로 제어되게 구성하고 있다.Here, the primary RF amplifier stage 10 is configured to be controlled by the simultaneous recording / reception / reproduction selection voltage (SB1 +), the secondary RF amplifier stage 14 is configured to be controlled by the TV reception selection voltage (SB2 +), RF modulator (18) is configured to be controlled by the VCR reproduction and simultaneous recording selection voltage (SB2 +).

한편 제3도는 본 고안의 다른 실시예를 나타내고 있는 도면으로서, 제2도에 나타낸 본 고안의 실시예와 다른 부분은 안테나의 입력신호가 1차 RF 증폭단을 거치지 않고 직접 RF 스플리터로 인가되게 연결하여 구성하는데 있다.On the other hand, Figure 3 is a view showing another embodiment of the present invention, a portion different from the embodiment of the present invention shown in Figure 2 is connected to the input signal of the antenna is directly applied to the RF splitter without going through the primary RF amplifier stage It is in composition.

이와같이 구성된 본 고안의 작용 및 효과를 설명하면 다음과 같다.Referring to the operation and effects of the present invention configured as described above are as follows.

제2도에서 VCR의 녹화기능만을 수행할 경우에는 동시녹화/수신/재생 선택전압(SB1+)이 발생되어 1차 RF 증폭단(10)에 입력된다. 따라서 1차 RF 증폭단(10)과 RF 스플리터(12)를 통과한 안테나 입력신호가 VCR 튜너로 입력되어 VCR의 튜너에 의해 선택된 채널의 TV 방송이 녹화된다.In FIG. 2, when only the recording function of the VCR is performed, simultaneous recording / receiving / reproducing selection voltage SB1 + is generated and input to the primary RF amplifier 10. Therefore, the antenna input signal passing through the primary RF amplifier stage 10 and the RF splitter 12 is input to the VCR tuner, and the TV broadcast of the channel selected by the tuner of the VCR is recorded.

또, TV를 시청하면서 다른 채널의 TV방송을 녹화시킬 경우에는 TV 동시녹화 모드가 선택되어 상기 동시녹화/수신/재생 선택전압(SB1+)과 TV 수신 선택전압(SB2+)이 발생되므로 1,2차 RF 증폭단(10,14)이 온된다.In addition, when recording TV broadcasts of other channels while watching TV, the TV simultaneous recording mode is selected to generate the simultaneous recording / receiving / playback selection voltage (SB1 +) and TV reception selection voltage (SB2 +). The RF amplifier stages 10 and 14 are turned on.

따라서, RF 스플리터(12)에서 나뉘어진 안테나 입력신호의 일부는 VCR 튜너로, RF 스플리터(12)에서 나뉘어진 안테나 입력신호의 다른 일부는 2차 RF 증폭단(14)과 RF 믹서(16)를 거쳐 TV RF단으로 공급되어 TV 수신 및 동시녹화 모드가 실행된다.Therefore, part of the antenna input signal divided by the RF splitter 12 is a VCR tuner, and another part of the antenna input signal divided by the RF splitter 12 is passed through the secondary RF amplifier stage 14 and the RF mixer 16. It is supplied to the TV RF stage to execute TV reception and simultaneous recording modes.

또한, VCR로 어떤 채널의 방송을 녹화하면서 VCR 튜너를 통하여 다른 채널의 방송을 TV로 수신할때 동시녹화/수신/재생 선택전압(SB1+)과 VCR 선택전압(B2+)가 온되고, 반면에 TV 수신선택 전압(SB2+)는 오프상태로 된다. 따라서 안테나 수신된 RF 신호는 1차 RF 증폭단(10)과 RF 스플리터(12)를 통해 VCR 튜너로 입력되어, 선택된 채널의 방송이 비디오 테이프에 기록됨과 동시에, 다른 선택된 채널의 방송이 RF 모듈레이터(18)를 통해 TV RF 단에 입력되어 TV에 수신된다. 이때 TV 수신선택전압(SB2+)가 오프 상태이므로, 2차 RF 증폭단(14)이 오프되어 안테나로 부터 입력되는 RF 신호가 차단되어 혼신에 의한 화질의 저하를 방지한다.In addition, when recording a channel of a channel with a VCR and receiving a channel of another channel through the VCR tuner, the simultaneous recording / receiving / playback selection voltage (SB1 +) and the VCR selection voltage (B2 +) are turned on, while the TV is on. The reception selection voltage SB2 + is turned off. Therefore, the antenna received RF signal is input to the VCR tuner through the primary RF amplifier stage 10 and the RF splitter 12, so that the broadcast of the selected channel is recorded on the video tape and the broadcast of the other selected channel is received by the RF modulator 18. ) Is input to the TV RF stage and received by the TV. At this time, since the TV reception selection voltage SB2 + is turned off, the secondary RF amplifier stage 14 is turned off to block the RF signal input from the antenna, thereby preventing deterioration of image quality due to interference.

또, VCR 재생모드에서는 VCR 선택전압(B2+)에 의해 온되는 RF 모듈레이터(18)에서 RF 신호로 변조된 영상/음성 입력신호가 RF 믹서(16)를 거쳐 TV RF 단으로 공급되어 VCR 재생모드를 실행하게 되는데, 이때에는 TV 수신 선택전압(SB2+)이 발생되지 않으므로 2차 RF 증폭단(14)이 오프되어 RF 믹서단(16)으로의 안테나 입력신호가 차단되므로 혼신에 의한 화질의 질적 저하를 방지할 수 있다.In the VCR playback mode, the video / audio input signal modulated by the RF signal from the RF modulator 18 turned on by the VCR selection voltage B2 + is supplied to the TV RF stage through the RF mixer 16 to switch to the VCR playback mode. In this case, since the TV reception selection voltage (SB2 +) is not generated, the secondary RF amplifier stage 14 is turned off, and the antenna input signal to the RF mixer stage 16 is cut off, thereby preventing the degradation of image quality due to interference. can do.

또, VCR로 녹화하면서 그 녹화되는 방송을 TV로 재생하는 모드에서는 동시녹화/수신/재생 선택전압(SB1+)과 VCR 선택전압(B2+)이 발생되므로 이때에는 1차 RF 증폭단(10)과 RF 모듈레이터(18)가 각각 온된다.In the mode of reproducing the recorded broadcast on a TV while recording with a VCR, simultaneous recording / receiving / playback selection voltage (SB1 +) and VCR selection voltage (B2 +) are generated. (18) is turned on respectively.

따라서, 1차 RF 증폭단(10), RF 스플리터(12)를 거친 안테나 입력신호는 VCR의 튜너로 입력되어 상기 VCR 튜너로 선택된 채널의 방송을 녹화하고, RF 모듈레이터(18), RF 믹서(16)를 거친 영상/음성 입력신호는 TV 세트의 RF 단으로 입력되어 VCR 재생이 실행된다.Accordingly, the antenna input signal passing through the primary RF amplifier stage 10 and the RF splitter 12 is input to the tuner of the VCR to record the broadcast of the channel selected by the VCR tuner, and the RF modulator 18 and the RF mixer 16. The video / audio input signal passed through is input to the RF stage of the TV set and VCR playback is performed.

이때에도 상기와 마찬가지로 2차 RF 증폭단(14)은 오프상태로 되므로 TV RF 입력단으로 공급되는 VCR RF 신호가 안테나 RF 입력신호에 혼신될 염려는 없다.In this case, as described above, since the secondary RF amplifier stage 14 is turned off, there is no fear that the VCR RF signal supplied to the TV RF input terminal may interfere with the antenna RF input signal.

이러한 동시녹화 시스템을 도표를 이용하여 체계적으로 표현하면 하기표와 같다.This simultaneous recording system is represented in the following table systematically using a chart.

[표1]Table 1

한편, 본 고안의 다른 실시예인 제3도와 같은 동시녹화 시스템의 동작은 상기에서 설명한 제2도의 시스템의 동작과 전반적으로 동일하며, 이 시스템의 특이점을 안테나의 입력신호가 RF 스플리터(12)를 통하여 VCR의 튜너에 항상 공급된다는 점이며, 초단 RF 증폭단의 생략으로 다소 안테나 입력신호의 감도는 떨어지나 시스템구성의 감소화의 잇점이 따른다.Meanwhile, the operation of the simultaneous recording system as shown in FIG. 3, which is another embodiment of the present invention, is generally the same as the operation of the system of FIG. 2 described above. The singularity of the system is that the input signal of the antenna is transmitted through the RF splitter 12. It is always supplied to the tuner of the VCR, and the omission of the ultra-short RF amplifier stage decreases the sensitivity of the antenna input signal, but it has the advantage of reducing the system configuration.

이러한 시스템은 TV 방송신호의 강전계지역 출하용 제품에 적용할때 유리하게 된다.Such a system is advantageous when applied to products for strong field delivery of TV broadcast signals.

이상에서 설명한 바와같이 본 고안은 VCR로 녹화하면서 VCR 튜너로 다른 방송을 TV 수신시 또는 녹화되는 방송을 TV로 확인시 VCR 시스템의 구성상 추가적인 구성요소 없이 간단하게 TV RF 입력신호와 VCR 영상/음성 RF 입력신호의 상호간섭에 의한 혼신을 방지할 수 있게 되므로 고화질을 얻을 수 있는 특유의 효과가 나타나게 된다.As described above, the present invention can easily record TV RF input signals and VCR video / audio without additional components in the configuration of the VCR system when receiving another TV with the VCR tuner or checking the recorded TV with the VCR tuner while recording with the VCR. Since the interference caused by the interference of the RF input signal can be prevented, a unique effect of obtaining a high picture quality is obtained.

Claims (2)

(정정) 1차 RF 증폭단(10), RF 스플리터(12)를 거친 안테나 입력신호는 VCR 튜너로 인가되게 구성하고, 1차 RF 증폭단(10), RF 스플리터(12), 2차 RF 증폭단(14), RF 믹서(16)를 차례로 거친 안테나 입력신호와 RF 모듈레이터(18), RF 믹서(16)를 거친 VCR 영상/음성 입력신호는 TV RF 단으로 인가되게 구성한 VCR 시스템에 있어서, 상기 1차 RF 증폭단(10)은 동시녹화/수신/재생 선택전압(SB1+)으로, 상기 2차 RF 증폭단(14)은 TV 수신 선택전압(SB2)으로 각각 온/오프 제어되게 구성하는 것을 특징으로 하는 VCR 시스템.The antenna input signal passing through the primary RF amplifier stage 10 and the RF splitter 12 is configured to be applied to the VCR tuner, and the primary RF amplifier stage 10, the RF splitter 12, and the secondary RF amplifier stage 14 In the VCR system configured to apply the antenna input signal through the RF mixer 16 and the VCR video / audio input signal through the RF modulator 18 and the RF mixer 16 to the TV RF stage, the primary RF The amplification stage (10) is a simultaneous recording / reception / reproduction selection voltage (SB1 +), the secondary RF amplifier stage (14) is configured to be controlled on / off, respectively by the TV reception selection voltage (SB2). 제1항에 있어서, 안테나의 입력신호는 직접 RF 스플리터(12)로 인가되게 구성하는 것을 특징으로 하는 VCR 시스템.The VCR system according to claim 1, wherein the input signal of the antenna is configured to be directly applied to the RF splitter (12).
KR2019900011122U 1990-07-27 1990-07-27 Vcr simultaneous recording system KR950010373Y1 (en)

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KR2019900011122U KR950010373Y1 (en) 1990-07-27 1990-07-27 Vcr simultaneous recording system

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KR920003273U KR920003273U (en) 1992-02-25
KR950010373Y1 true KR950010373Y1 (en) 1995-12-11

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