JPH0380690A - Vtr - Google Patents

Abstract

PURPOSE:To eliminate the need of ON/OFF operations of a decoder side by providing a power source plug socket for a decoder on a case body, and supplying a power source to the power source plug socket at the time of selecting a signal from a satellite broadcast receiving tuner. CONSTITUTION:A plug socket 15 for outputting a commercial power source from a power source circuit 13 is provided on a case body of a VTR, and ON/OFF of a power source supply to this plug socket 15 is controlled by a control circuit 16 consisting of a microcomputer. This control circuit 16 is a circuit operated at the time when a satellite broadcast receiving tuner 2 is selected, and in this case, a power source is supplied to the plug socket 15 for outputting a control signal to the power source circuit 13 from this control circuit 16. Accordingly, a power source plug 38 of a decoder is coupled to this plug socket 15, and when the satellite broadcast receiving tuner 2 is selected, the power source of the decoder is always turned on. In such a way, it becomes unnecessary entirely that the decoder side executes ON/OFF operations of the power source.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a VTR having a built-in satellite broadcast reception tuner and an air broadcast reception tuner, and in particular to a VTR in which the power supply of a pay broadcast decoder can be controlled in conjunction with the power supply of a pay broadcast decoder. Regarding.

[Conventional technology]

FIG. 3 shows the configuration of a conventional VTR with a built-in satellite broadcast reception tuner. This device includes a satellite broadcast reception tuner 2 that inputs a first intermediate frequency signal from a satellite antenna to a terminal 1 and plays video and audio, and an F from the tuner 2.
The FM detection output terminal 3 outputs the M detection output to the outside, the bit stream output terminal 4 outputs the bit stream to the outside, and the signal from the terrestrial (VHF, UHF) antenna is input to the antenna terminal 5 to output the video signal and Manual selection of an output signal from any one of the terrestrial broadcast reception tuner 6, the line input terminal group 7, the line input terminal group 7, the terrestrial tuner 6, and the satellite reception tuner 2, which reproduce and output audio signals. A human power changeover switch 8, a video recording and playback circuit 9 that records/plays back the video signal selected by the input changeover switch 8, and an audio recording and playback circuit 1 that records/playback the audio signal selected by the input changeover switch 8.
0, a video output terminal 11 for outputting a reproduced video signal from the video recording/reproducing circuit 9, and an audio output terminal 12 for outputting a reproduced audio signal from the audio recording/reproducing circuit 10. 13 is a power supply circuit, and 14 is a power plug.

FIG. 4 is a diagram showing an example of the configuration of a decoder for paid satellite broadcasting. This decoder converts audio data from a bitstream by connecting its binto stream input terminal 31 to the beat stream output terminal 3 of a VTR with a built-in satellite broadcast reception tuner, and by connecting its FM detection input terminal 32 to the FM detection output terminal 4 of the same VTR. , the scramble decoded data, etc. are determined, and the video signal is descrambled in the video descrambler 33, and the audio signal is descrambled in the audio descrambler 34, and the video signal and audio output are output to the video output terminal 35. An audio signal is output to the terminal 36. The video output terminal 35 and audio output terminal 36 are connected to corresponding terminals in the line input terminal group 7 of the VTR.

37 is a power supply circuit, and 38 is a power supply plug.

[Problem to be solved by the invention]

If there is a possibility of receiving paid broadcasting, the decoder must be connected to a VTR equipped with a satellite broadcast reception tuner at all times, but only when actually receiving paid broadcasting.
The decoder is powered on. In other words, the decoder was powered on and off by manual operation.

Therefore, it is necessary to turn on/off the power of not only the VTR but also the decoder, which is complicated.

The present invention has been made in view of these points, and its object is to provide a VTR with a built-in satellite broadcast reception tuner that eliminates the need for any operations on the decoder side.

(Means for Solving the Problems) For this purpose, the present invention selectively records signals from a built-in satellite broadcast reception tuner and an air broadcast reception tuner, and outputs a bit stream to a decoder and an FM
In a VTR equipped with an output terminal for the detection output and an input terminal for inputting the video signal and audio signal from the decoder, a power outlet for the decoder is provided in the box.11 When selecting the signal from the satellite broadcast reception tuner The power was supplied to the above power outlet.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is a diagram showing one embodiment thereof. Components that are the same as those in FIG. 3 are given the same reference numerals. In this embodiment, the outlet 15 that outputs commercial power from the power supply circuit 13 is connected to a VTR.
A control circuit 16 consisting of a microphone computer controls the on/off of power supply to the outlet 15. Of course, power supply circuit 13
Since it starts operating only when the power switch (not shown) on the VTR side is turned on, the power to the outlet 15 is naturally turned on/off by turning on/off the power switch.This control circuit 16 is connected to the satellite broadcast reception tuner. 2 is selected, and at this time, the control circuit 16 outputs a control signal to the power supply circuit 13 to supply power to the outlet 15.

Therefore, the power plug 3 of the decoder is connected to this outlet 15.
8, the power of the decoder will always be turned on when the satellite broadcast reception tuner 2 is selected. When scrambled satellite broadcasting is received, by switching the input changeover switch 8 to the line input terminal 7 side, the video signal and audio signal descrambled by the decoder can be taken in. In this way, since the decoder operates only when receiving satellite broadcasting, wasteful power consumption can be prevented.

FIG. 2 is a diagram showing another embodiment. In this example,
One input terminal of the switches 17 to 19 is connected to the output video signal line and the output audio signal line of the tuner 2, and the other input terminal of the switches 17 to 19 is newly provided with an external input terminal group 20 exclusively for the decoder. is connected. Video input terminal 20 of this external input terminal group 20
1 is connected to the switch 17, the audio R input terminal 202 is connected to the switch 18, and the audio R input terminal 2.03 is connected to the switch 19. Switching control of the switches 17 to 19 is performed manually.

As a result, the bit stream input terminal 31 of the decoder is connected to the beat stream output terminal 4 of the VTR, and the FM detection input terminal 32 is connected to the FM detection output terminal 3.
Furthermore, by connecting the video output terminal 35 and the audio output terminal 36 to the external input terminal group 20, when receiving satellite broadcasting, power is supplied to the power outlet 15 and the decoder operates as in the above embodiment. At this time, if the contacts of the switches 17 to 19 are switched to the external input terminal 20 side, the output signal from the decoder will be taken into the VTR.

At this time, since the other line input terminal group 7 is not used, output signals from other devices can be taken in, and there is no need to change the connection between the decoder and other devices.

〔Effect of the invention〕

As explained above, according to the present invention, there is no need for the decoder side to perform power on/off operations at all. Also,
Since the power to the decoder is turned on and operated only when the satellite broadcast reception tuner is selected, there is an advantage that there is no unnecessary power consumption.

[Brief explanation of drawings]

Fig. 1 is an internal block diagram of a VTR with a built-in satellite broadcast reception tuner according to one embodiment of the present invention, Fig. 2 is the same block diagram of another embodiment, Fig. 3 is the same block diagram of the conventional one, and Fig. 4 is the same block diagram. FIG. 2 is an internal block diagram of a decoder.

Claims (2)

[Claims] (1) Selectively records signals from the built-in satellite broadcast reception tuner and air broadcast reception tuner, and outputs bit stream output and FM detection output to the decoder, as well as video and audio signals from the decoder. A VTR equipped with an input terminal for inputting data, characterized in that a power outlet for a decoder is provided in the case, and power is supplied to the power outlet when a signal from the satellite broadcast reception tuner is selected. V
T.R. (2) A changeover switch is provided on each of the video signal and audio signal lines output from the satellite broadcast reception tuner,
2. The VTR according to claim 1, wherein the signal input to the input terminal and the signal output from the satellite reception tuner are selected by the changeover switch.