JPH0778986B2 - Video equipment control equipment - Google Patents

Description

The present invention relates to a terrestrial broadcast including a television receiver, a satellite broadcast receiver, and a magnetic recording device capable of recording and reproducing terrestrial broadcast and satellite broadcast. And to make it possible to select the satellite broadcast signal,
The present invention relates to a control device for a video device, which controls a satellite broadcast receiver according to data and a control signal from a remote control module of a television receiver and a magnetic recording device.

"Prior Art" With the start of SHF band satellite broadcasting using geostationary satellites, parabolic antenna (1), converter (2), and BS tuner (3) are added as shown in FIG. As a result, it has become possible to receive even on a general television receiver (4). In addition, when the remote controller module (5) of the television receiver (4) issues a command to switch channels, modes, etc.,
CPU (6) of TV receiver (4) and C of BS tuner (3)
The PU (7) is controlled.

"Problems to be solved by the invention" However, even if a magnetic recording device is simply combined with such a system of a television receiver (4) and a BS tuner (3),
There is a problem that the control signals from the television receiver and the magnetic recording device are overlapped with each other and normal data communication of the remote control module cannot be performed.

"Means for Solving Problems" The present invention has been made to solve the above problems, and a satellite broadcast receiver (11) for receiving and demodulating signals from satellites, A television receiver (10) that receives and reproduces a signal from this satellite broadcast receiver (11) and a terrestrial television broadcast signal, and records a signal from the satellite broadcast receiver (11) and a terrestrial television broadcast signal Magnetic recording devices (12)
The television receiver (10) includes a remote control module (1) for issuing a switching control command between terrestrial broadcasting and satellite broadcasting.
5), the magnetic recording device (12) has a remote control module (29) for issuing a switching control command in the magnetic recording device (12), and the satellite broadcast receiver (11) is a television receiver. The first gate (20) for passing the data of the remote control module (15) of the machine (10) and the second gate (21) for passing the data of the remote control module (29) of the magnetic recording device (12).
And a remote control module (2 for the magnetic recording device (12).
When the data of 9) is input, the header of a certain time width of this data is detected, and the first gate (20) for data input of the remote control module (15) of the television receiver (10) is detected within the time of this header. The television receiver (1) has a control section (18) for controlling to turn off and turn on the second gate (21).
0) remote control module (15) and magnetic recording device (12)
It is a control device for a video device, which enables two data transfers with the remote control module (29).

"Operation" Normally, the control unit (18) of the satellite broadcast receiver (11) outputs, for example, an L signal as a gate control signal, and only the first gate (20) is constantly turned on via the inverter (23), The second gate (21) is off.

Here, the remote controller module (2
When the data from 9) is input, the header of this data is detected by the control section (18) of the satellite broadcast receiver (11), the gate signal is immediately inverted, the first gate (20) is turned off, and the 2 Turn on the gate (21). Data from the remote control module (29) of the magnetic recording device (12) is turned on continuously by turning off the first gate (20) and turning on the second gate (21) while data with a header is being input. Just enter.

When this data has no interruption header and a certain period of time has passed, the second gate (21) turns off, the first gate (20) turns on, and the remote control module (15) of the television receiver (10).
The data from is returned to the readable state.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, (10) is a television receiver, (11) is a satellite broadcast receiver, and (12) is a magnetic recording device, which are connected to each other to form a video device.

The television receiver (10) includes an antenna (13) for receiving terrestrial broadcasting, a CPU (14) for controlling received signal demodulation, channel switching, mode switching, etc., a television receiver (10) and a satellite broadcasting receiver (11). ) Channel, remote control module (15) for commanding mode switching, etc.

The satellite receiver (11) includes a parabolic antenna (1
6), a converter (17), and a control CPU (18), and a data input terminal (19) of the CPU (18) has a first gate (20) and a second gate (21) formed of an AND circuit. ) Is coupled, and the remote control select signal output terminal (22) is coupled to the first gate (20) through the inverter (23),
Further, the magnetic recording side remote controller data input terminal (24) is directly connected to the second gate (21) and is connected to one input side of the second gate (21).

The magnetic recording device (12) includes a terrestrial broadcast receiving antenna (27), a timer CPU (2) in addition to the slave CPU (25).
8), a remote control module (29) is provided, and the serial data output terminal of the slave CPU (25) is coupled to the second gate (21).

In the above configuration, the CP of the satellite receiver (11)
Normally, an L signal is output from the remote control select terminal (22) of the U (18), and this L signal turns on the first gate (20) via the inverter (23) to turn on the television receiver (10). It is ready to read data from the remote control module (15).

When a remote control data output command is issued from the remote control module (29) of the magnetic recording device (12), this slave CPU (25) is sent via the timer CPU (28) and slave CPU (25).
The data of the remote control module (29) is output from the remote control data output terminal of. The data of the remote controller module (29) of this magnetic recording device (12) necessarily has a header of a fixed time width (T) as shown in FIG. 2, and then a reader, a device code, and a command code. (Power on,
Off, channel, audio switch, etc.) and finally,
It has a shorter code confirmation period than the header, and the next data continues. That is, a signal to which a header as a control signal is necessarily added is sent to the head of the data. The data of this remote control module (29) is
Input to the input terminal (24) of the CPU (18) even if the second gate (21) is off. Then, the CPU (18) detects the header, and the remote control select output terminal (22) is inverted to the H signal within the duration T of the header. Then, the second gate (21) is turned on to receive the data of the remote control module (29) of the magnetic recording device (12).

The satellite receiver (11) CPU (18) is a magnetic recording device (1
While the data of the remote control module (29) of 2) is being input, the output of the remote control select terminal (22) is always set to H to turn off the first gate (20) and turn on the second gate (21). TV receiver (10) remote control module (15)
The data of the remote control module (29) of the magnetic recording device (12) is prioritized over the data of (1). A satellite broadcast is recorded by the magnetic recording device (12) in response to a command signal from the remote control module (29).

When the data in the remote control module (15) of the magnetic recording device (12) is interrupted and the header disappears and a certain time set by a timer such as a one-shot multivibrator elapses,
Return the output of the remote control select terminal (22) to the L signal, turn on the first gate (20) and turn off the second gate (21) to read the data from the remote control module (15) of the television receiver (10). It is possible.

[Advantages of the Invention] Since the present invention is configured as described above, the magnetic recording device (12) is provided in the television receiver (10) and the satellite broadcast receiver (11).
It is possible to perform normal data communication between the remote control module (15) of the television receiver (10) and the remote control module (29) of the magnetic recording device (12) in the video device in which the above are combined. In particular, the control signal and the data can be transmitted on the same line, and the circuit configuration becomes simple and reliable.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a control device for video equipment according to the present invention, FIG. 2 is a waveform diagram, and FIG. 3 is a conventional block diagram. (10) …… TV receiver, (11) …… satellite TV receiver, (12) …… magnetic recording device, (20) …… first gate, (21) …… second gate.

Claims (1)

[Claims] 1. A satellite broadcast receiver (11) for receiving and demodulating a signal from a satellite, and a television receiver for receiving and reproducing a signal from this satellite broadcast receiver (11) and a terrestrial television broadcast signal. (10) and a magnetic recording device (1) for recording signals from the satellite broadcast receiver (11) and terrestrial television broadcast signals.
2), the television receiver (10) has a remote control module (15) for issuing a switching control command between terrestrial broadcasting and satellite broadcasting, and the magnetic recording device (12) includes the magnetic recording device (12). The satellite broadcast receiver (11) has a remote control module (29) for issuing a switching control command in 12), and the satellite broadcast receiver (11) has a first gate (20) for passing data of the remote control module (15) of the television receiver (10). ) And a second gate (2) for passing data from the remote control module (29) of the magnetic recording device (12).
1) and the data of the remote control module (29) of the magnetic recording device (12) are input, a header of a certain time width of this data is detected, and the remote control module of the television receiver (10) is detected within the time of this header. The remote control module of the television receiver (10) has a control section (18) for controlling the first gate (20) for data input of (15) to be turned off and the second gate (21) to be turned on. (15) and magnetic recording device (1
A control device for a video device, which enables two data transfers with the remote control module (29) of 2).