JPH05207475A - Cs/bs tuner - Google Patents

Abstract

PURPOSE:To allow a recording and reproducing device such as a general VTR to attain timer video recording and sound recording by sending a monitor signal to the connected recording and reproducing device such as a general VTR so as to detect the operating state thereby controlling ON/OFF of a power supply of the CS/BS tuner main body based on the result of detection. CONSTITUTION:The tuner is provided with input terminals 3a, 3b, output terminals 2a, 2b, a monitor signal generating section 5 sending a monitor signal to a recording and reproducing device, and a detection section 7 connecting to the input terminals 3a, 3b and detecting the presence of the monitor signal or the like. Then the monitor signal is sent to the connected VTR to check an output signal of the VTR thereby detecting the presence of the monitor signal, and when the monitor signal is outputted, it is discriminated that the video recording mode of the signal from the CS/BS tuner is set, the power of the tuner main body 1 is applied to select a set channel. Then the output signal of the VTR is checked to detect the presence of the video signal and when the video signal is absent, it is discriminated to be the end of video recording to interrupt the power supply of the tuner main body 1 and the monitor operation is restored.

Description

Detailed Description of the Invention

[0001]

The present invention relates to CS (satellite communication) / B
CS / related to S (satellite broadcasting) tuner, which controls power on / off etc. in response to the state of the connected VTR
It relates to the circuit of the BS tuner.

[0002]

2. Description of the Related Art Conventionally, for example, a midnight program of satellite broadcasting is VT.
In the case of timer recording with R, the procedure was as follows. First, VT the power plug of the CS / BS tuner
Replace it with the R interlocking outlet and receive the channel and audio mode for timer recording, and leave the power switch "ON". Then, the VTR is set to the program start time and put in the program standby state. At the set time, the power of the VTR and CS / BS tuner is automatically turned on to record the received program, and the power is turned off at the end of the recording. That is, every time the timer recording is set, CS / B
It was necessary to unplug the power plug of the S tuner from the general power outlet, replace it with the VTR's interlocking outlet, and after timer recording, return to the general power outlet. Also, a VTR that does not have an interlocking outlet
In case of CS / B, prepare an audio timer separately.
It was necessary to set the power on time of the S tuner. On the other hand, the usage pattern of the CS / BS tuner is that it is a 24-hour broadcast, so VT is used for programs such as late night and early morning
There is a particular demand for a time shift function that allows the user to record in R and play it back at a desired time to enjoy. However, there is a problem that the operation for timer recording is very complicated as described above.

Further, if the CS / BS tuner and the VTR are connected by a dedicated data transmission line and a timer reservation for satellite broadcast programs etc. is made in the VTR, the tuner is powered on by a control signal from the VTR at the reservation time. There is also a system that selects a reserved channel. However, this method is a system limited to a specific model, and is not a method generally adopted and compatible.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and sends a monitoring signal to a recording / reproducing apparatus such as a connected VTR to detect its operating state, and Based on the power supply of the main body of the CS / BS tuner
The present invention provides a CS / BS tuner in which "off" or the like is controlled and timer recording or recording can be performed by a recording / reproducing apparatus such as a general VTR.

[0005]

In order to solve the above problems, the present invention receives an IF signal from a CS antenna / BS antenna and outputs a required signal such as video / audio,
In a CS / BS tuner to which a recording / reproducing device such as R can be connected, an input terminal for inputting an output signal of the recording / reproducing device, an output terminal for passing out a signal of the input terminal to a television receiver or the like, A monitor signal generator that sends a monitor signal to the recording / reproducing device and a detector that is connected to the input terminal and detects the presence or absence of the monitor signal are provided.
The present invention provides a CS / BS tuner configured to determine the operation state of the recording / reproducing apparatus based on the detection result of the detection unit and control at least power-on / off of the CS / BS tuner main body.

[0006]

With the above construction, the CS according to the present invention
In the / BS tuner, a monitoring signal is sent to the connected VTR, the output signal of the VTR is checked to detect the presence / absence of the monitoring signal, and if the monitoring signal is output, CS /
It is determined that the mode is the recording mode of the signal from the BS tuner, the power of the tuner main body is turned on, and the set channel is selected. Then, the output signal of the VTR is checked to detect the presence / absence of a video signal, and if the video signal disappears, it is determined that the recording has ended, the power of the tuner main body is turned off, and the monitoring operation is returned to.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A CS / B according to the present invention will be described below with reference to the drawings.
An embodiment of the S tuner will be described in detail. FIG. 1 is a block diagram of essential parts of an embodiment of a CS / BS tuner according to the present invention. In the figure, 1 is a tuner body, which is a CS / BS
-Select the desired channel from the IF signal and output the video / audio signal. Video / audio output terminals 2a and 2b are connected to an input terminal of a VTR or the like via a pin cord or the like. 3a
・ 3b is a video / audio input terminal, and V via a pin code
It is connected to an output terminal such as TR. 4a and 4b are video / audio output terminals, and the video / audio signals of 3a and 3b are through-out and connected to a television receiver or the like via a pin cord or the like. A monitoring signal generator 5 outputs a specific signal for monitoring the VTR, for example, a signal of 15 KHz / 0.5 Vp-p. Reference numeral 6 denotes a changeover switch, which switches the video signal from the tuner main body 1 and the monitoring signal from the monitoring signal generator 5 and outputs the signal to the video output terminal 2a. 7 is a detector, which is connected to the video input terminal 3a,
The presence or absence of a monitoring signal or video signal is detected. A memory 8 stores data such as reserved channel numbers and voice modes. A control unit 9 is composed of a microcomputer or the like and controls each of the above units.

Next, the operation of the CS / BS tuner according to the present invention will be described with reference to the flowchart of FIG.
First, the VTR sets the program start / end time, line input, etc., and enters the program standby state. Next, the CS / BS tuner operates the program setting section to
When the audio mode and the like are set in the order of broadcast time and the tuner main body 1 is turned off, a monitoring signal is sent out and the VTR is in the monitoring state (step 1, hereinafter abbreviated as ST1). The detection unit 7 checks whether there is a 15 KHz signal for monitoring (ST
2) If the monitoring signal is "absent", the VTR processes as "recording standby" or recording another signal and continues the monitoring operation. When the monitoring signal is detected (ST2, YES), the VTR is turned on, the output terminals 2a and 2b are selected, and it means that the recorder is in the recording mode of the signal from the CS / BS tuner. The power supply of 1 is turned on, the changeover switch 6 is changed over to the video signal from the tuner body 1, and the first program such as the reserved channel is read from the memory 8 and executed (ST3). Next, the detection unit 7 detects the presence or absence of a video signal (ST4), and if the video signal is "present", it is processed as being recorded and the monitoring operation is continued. When the video signal becomes "absent" (ST
4, NO), it is determined that the recording is finished, the power of the tuner main body 1 is turned off, and the changeover switch 6 is changed to a monitoring signal,
The executed program is erased from the memory 8 and the next program is advanced to return to the monitoring state (ST5). In this embodiment, the operation of the CS / BS tuner capable of reserving a plurality of programs in the memory 8 has been described.
With the CS / BS tuner in which the channel and voice mode set last when the power is turned on is received, the same configuration can be used for timer recording of one program.

Further, in this embodiment, a monitoring signal is sent using the video signal line to check whether the VTR is in the recording mode, and similarly, the video signal on the video signal line is detected to check whether the video signal is being recorded. However, the same configuration can be achieved by providing a changeover switch and a detection unit on the audio signal line. In this case, when checking whether or not recording / recording is being performed by detecting an audio signal, for example, if a 10-second timer or the like is provided to check, it is possible to reliably determine the end of recording / recording. it can.

[0010]

As described above, C according to the present invention
In the S / BS tuner, a signal for monitoring is sent to the connected VTR to determine whether it is in the recording mode or not.
The signal from TR is detected to determine whether or not recording is in progress, and based on the determination result, the power of the CS / BS tuner main unit is turned on.
Control "off" etc. Therefore, any type of V in general
It can also be connected to TR, allowing timer recording and recording without changing the power plug.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of a CS / BS tuner according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the CS / BS tuner according to the present invention.

[Explanation of symbols]

 1 Tuner body 2a Video output terminal 2b Audio output terminal 3a Video input terminal 3b Audio input terminal 4a Video output terminal 4b Audio output terminal 5 Monitoring signal generator 6 Changeover switch 7 Detector 8 Controller 9 Memory

Claims (1)

[Claims] 1. An IF from a CS antenna / BS antenna
Receives the signal and outputs the required signal such as video and audio.
In a CS / BS tuner to which a recording / reproducing device such as TR can be connected, an input terminal for inputting an output signal of the recording / reproducing device, an output terminal for passing out a signal of the input terminal to a television receiver, etc. A monitor signal generator for sending a monitor signal to the recording / reproducing device and a detector connected to the input terminal for detecting the presence or absence of the monitor signal are provided, and the recording / reproducing is performed based on the detection result of the detector. A CS / BS tuner characterized in that it is configured to judge the operating state of the device and control at least turning on / off the power of the CS / BS tuner main body.