JPH0380689A - Vtr incorporating satellite broadcast reception tuner - Google Patents

Abstract

PURPOSE:To eliminate the need for ON/OFF operations of a decoder side by providing a power source plug socket for a decoder which can turn on/off a power source supply on an enclosure. CONSTITUTION:A plug socket 15 for outputting a commercial power source from a power source circuit 13 is provided on the enclosure of a VTR so that ON/OFF of a power source supply to this plug socket 15 can be controlled by a control circuit 16 consisting of a microcomputer. That is, in a tuner 2, in addition to a regular processing part, a processing part 2 having a chargeable broadcast discriminating part is provided, and a chargeable broadcast discriminating signal is fetched therefrom and inputted to a control circuit 16, and at the time of a chargeable broadcast, a power source is outputted to the plug socket 15 from the power source circuit 13, and at the time of a regular broadcast, the power source is not outputted. In such a manner, it becomes unnecessary entirely that a 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 with a built-in satellite broadcast reception tuner that can control the power supply of a pay broadcast decoder in conjunction with the power supply.

[Conventional technology]

FIG. 3 shows the configuration of a conventional satellite broadcast receiving tuner RvTR. This device is a satellite broadcast receiving tuner 2 that inputs a first intermediate frequency signal from a satellite broadcast antenna to a terminal 1 and performs video and audio reproduction. , the F from 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 Select one 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 manual input selector switch 8; a video recording/reproducing circuit 9 for recording/reproducing the video signal selected by the input selector switch 8; an audio recording/reproducing circuit 10 for recording/reproducing the audio signal selected by the input selector switch 8; 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 are provided. 13
is a power supply circuit, and 14 is a power supply plug.

FIG. 4 is a diagram showing an example of the configuration of a decoder for paid satellite broadcasting. This decoder can output audio from a bit stream by connecting its pit 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 video descrambler 33 descrambles the video signal, and the audio descrambler 34 descrambles the audio signal, and outputs the video signal and audio 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 to solve the problem]

To this end, the present invention provides a VTR with a built-in satellite broadcast reception tuner that is equipped with an output terminal for bit stream output and FM detection output to a decoder, and an input terminal for inputting video signals and audio signals from the decoder. It was configured with a power outlet for the decoder that can turn the supply on and off.

〔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 denoted by the same reference numerals. Connect the outlet 15 that outputs commercial power from the power supply circuit 13 to VT.
A control circuit 16 consisting of a microphone computer controls on/off of the power supply to the outlet 15. That is, in addition to normal processing, a processing section 2a having a pay broadcast discrimination section is provided in the tuner 2, and a pay broadcast discrimination signal is extracted from the processing section 2a and sent to the control circuit 1.
6, power is outputted from the power supply circuit 13 to the outlet 15 during paid broadcasting, and power is not outputted during normal broadcasting.

Note that, as a matter of course, the power supply circuit 13 starts operating only when a power switch (not shown) on the VTR side is turned on, and therefore, the power to the outlet 15 is naturally turned on/off by turning on/off the power switch.

FIG. 2 is a diagram showing another embodiment. In the above example,
Since the output of the decoder is added to the line input terminal group 7, during pay broadcasting, it is necessary not only to turn on the power to the decoder, but also to switch the input selector switch 8 to the line input terminal group 7 side to receive the output from the decoder. was there.

Therefore, in this embodiment, 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 switches 17 to 19 are
A newly provided external input terminal group 20 dedicated to the decoder is connected to the other input terminal of the decoder. This external input terminal group 20
The video input terminal 201 is connected to the switch 17, the audio input terminal 202 is connected to the switch 18, and the audio R input terminal 203 is connected to the switch 19. And this switch 17-1
The switching control of 9 is performed by the control circuit 16.

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, if the video output terminal 35 and the audio output terminal 36 are connected to the external input terminal group 20, when receiving paid broadcasting, power is supplied to the power outlet 15 and the decoder operates as in the above embodiment. , the switches 17 to 19 automatically select the input from the external input terminal group 20, so that the output signal from the decoder is output from the external input terminal group 2.
It will be imported into the VTR from 0 onwards. At this time,
Not only does it become unnecessary to switch manually as shown in Fig. 1, but the other line input terminal group 7 is not used, so output signals from other devices can be taken in, and therefore the decoder and other devices can be connected. There is no need to change connections.

In addition, in FIGS. 1 and 2, it is also possible to manually supply power to the outlet 15 and switch the switches 17 to 19 without using the control circuit 16.

Even in this case, the decoder side can be powered only by the VTR side.

〔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 can be turned on and operated only when scrambled broadcasting is received, there is an advantage that problems can be prevented during recording by timer reservation.

[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 (4)

[Claims] (1), Bitstream output to decoder and FM
In a VTR with a built-in satellite broadcast reception tuner, which is equipped with an output terminal for detection output and an input terminal for inputting video and audio signals from the decoder, a power outlet for the decoder is provided in the box to enable the power supply to be turned on and off. A VTR with a built-in satellite broadcast reception tuner. (2) A pay broadcast discrimination unit is provided in the tuner, and power is supplied to the power outlet by outputting a pay broadcast discrimination signal from the pay broadcast discrimination unit. The VTR with a built-in satellite broadcast reception tuner as described in item 1. (3) A changeover switch is provided on each of the video signal and audio signal lines output from the tuner, and the changeover switch selects the signal input to the input terminal and the signal output from the tuner. A VTR with a built-in satellite broadcast reception tuner according to claim 2. (4) The VTR with a built-in satellite broadcast reception tuner according to claim 3, wherein the changeover switch is switched to the input terminal side when the pay broadcast identification signal is output.