JPH04239888A - Television receiver - Google Patents

Abstract

PURPOSE:To make receiving and picture recording as reservation setting sched ule executed precisely in a television receiver provided with reservation receiving function. CONSTITUTION:The reservation setting of a channel received by a BS receiving circuit 6 is executed by a station selecting microcomputer 14. When reservation setting time comes, the station selecting microcomputer 14 reads a remote control signal to set a video tape recorder 18 to a picture recording operation state from a memory 28, transmits it to the video tape recorder 18 from an optical transmitting unit 31 and sets the video tape recorder 18 to the picture recording operation state. Besides, the station selecting microcomputer 14 reads and transmits the remote control signal, after that, controls the BS receiving circuit 6, makes it execute the receiving of the channel reservation-set, supplies the receiving signal of it to the video tape recorder 18 and picture-records.

Description

[Detailed description of the invention]

0010

[Industrial Application Field] The present invention relates to a receiving circuit (tuner)
This invention relates to a television receiver having a reservation reception function that allows reservation of channels to be received.

[0020]

[Prior Art] Conventionally, television receivers that have a built-in receiving circuit for satellite broadcasting (hereinafter referred to as a "BS receiving circuit") in addition to a normal receiving circuit have been used to set reservations for channels to be received by the BS receiving circuit. It has a reservation reception function that allows you to receive reservations. For example, such a television receiver is configured as shown in FIG. 2, where (1) is a receiving antenna for receiving normal television broadcasts, and (2) is a receiving antenna
This is a normal receiving circuit that selects a desired receiving channel from the received signal from 1) and demodulates the audio and video signals.The receiving circuit (2) selects the desired receiving channel and converts the frequency into an intermediate frequency signal. This channel selection section (3) and this channel selection section (
3) a detection unit that separates the intermediate frequency signal from 3) into audio and video intermediate frequency signals, detects each, and extracts the audio and video signals;
4). (5) is a BS for receiving satellite broadcasting.
The receiving antenna (6) is a BS receiving circuit that selects the desired receiving channel from the received signal from the BS receiving antenna (5) and demodulates the audio and video signals, and (7) is the normal receiving circuit that receives the signal from the receiving antenna (2). The audio switching circuit (8) selects between the audio signal and the audio signal from the BS receiving circuit (6), and the audio switching circuit (8) amplifies the audio signal from the audio switching circuit (7) and sends it to the subsequent speaker (9).
), (10) is a video switching circuit that selects between the video signal from the normal receiving circuit (2) and the video signal from the BS receiving circuit (6), and (11) is the video switching circuit ( a video processing circuit (13) that performs signal processing such as image quality adjustment, brightness adjustment, and color demodulation on the luminance and carrier color signals separated from the video signal from (10), extracts the three primary color signals, and supplies them to the picture tube (12) in the subsequent stage; ) is a deflection circuit that generates horizontal and vertical deflection currents based on the synchronization signal separated from the video signal from the video switching circuit (10) and supplies them to the horizontal and vertical deflection coils of the picture tube (12), and (14) is a normal deflection circuit. Receiving circuit (2
) and a tuning microcomputer (hereinafter referred to as "tuning microcomputer") that controls the tuning operation of the receiving channels in the BS receiving circuit (6). ) has a reservation reception function that allows you to reserve channels for reception. (15) is a power supply circuit that rectifies and smoothes the commercial AC power from the AC power plug (16) to convert it into DC, and supplies power to each circuit such as the TV receiver's tuning microcomputer (14); (17) is an AC Power plug (1
This is a BS power supply circuit that rectifies and smoothes the commercial AC power from 6) to convert it into DC and supplies power to the BS receiving circuit (6).

[0030] In such a television receiver, in order to automatically record the received signal of the reserved channel by supplying it to the video tape recorder (18) as an external recording device, the BS reception An audio and video output terminal (19) outputs the audio and video signals from the circuit (6) to a video tape recorder (18) with a scheduled recording function.
20) and A of this video tape recorder (18).
AC for motion detection into which the C power plug (21) is inserted
The power outlet (22) and this AC power outlet (
A detection circuit (22) detects the load current during operation of the video tape recorder (18) into which the AC power plug (21) is inserted, and outputs an H-level operation detection signal to the channel selection microcomputer (14). 23). Specifically, the detection circuit (23) is a current detection transformer (
24), a rectifier circuit (25) that rectifies and smoothes the voltage induced in the secondary coil of the current detection transformer (24),
The output voltage from the rectifier circuit (25) is supplied to the non-inverting terminal via the impedance conversion transistor (26), and the comparator (27) is supplied with the power supply voltage VDD as a reference voltage to the inverting terminal. ). Therefore, in such a television receiver,
First, use the channel selection microcomputer (14) to reserve the channels to be received by the BS receiving circuit (6), and connect the AC power outlet of the video tape recorder (18) to the AC power outlet (22).
After plugging in the power plug (21), you can set the video tape recorder (18) to the scheduled recording mode, which starts recording at the scheduled time, and the video tape recorder (18) will start recording at the scheduled time. When the transformer (18) enters the recording operation state, the voltage induced in the secondary coil of the current detection transformer (24) increases due to the load current, and the voltage induced in the secondary coil of the current detection transformer (24) increases.
) increases and becomes larger than the reference voltage, the output of the comparator (27) inverts from L level to H level, and is sent to the tuning microcontroller (14) as an operation detection signal.
will be sent to. Then, the channel selection microcomputer (14) that receives the H level output from the comparator (27) controls the BS receiving circuit (6) to receive the reserved channel. ) are outputted to a video tape recorder (18) through audio and video output terminals (19) and (20). the result,
The reception signal of the reserved channel in the BS receiving circuit (6) is supplied to the video tape recorder (18) which is in the recording operation state, and recording, that is, the reserved reception and recording of satellite broadcasting is performed.

[0040]

[Problems to be Solved by the Invention] However, in a television receiver having such a conventional configuration, the load current during operation of a video tape recorder having a scheduled recording function is detected and the reserved channel is recorded in the BS receiving circuit. Therefore, it is not possible to distinguish whether the load current is due to the recording operation of the video tape recorder or the load current due to another operation (playback operation, etc.). After making the reservation settings for the channels to be received by the circuit, the video tape can be
If the precoder is set to another operating state such as playback mode, the load current will be detected each time and the BS receiving circuit will start receiving the reserved channel, resulting in a malfunction. This has caused a problem in that the reservation setting schedule for the channels received by the circuit goes out of order. The present invention has been developed in view of the above points, and it is possible to prevent malfunctions even if the video tape recorder is set to a different operating state after setting the reservation of the channel to be received by the BS receiving circuit. To provide a television receiver which can reliably execute a reservation setting schedule and record the received signal on a video tape recorder without any delay.

[0050]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a television receiver having a reservation reception function that allows a reception circuit (in this case, a BS reception circuit) to reserve a channel to be received. , a setting means is provided for setting an external recording device (in this case, a video tape recorder) to a recording operation state to which the received signal is supplied when reception of the reserved channel is started, and the setting means comprises:
Storage means for storing control signals of the video tape recorder; and sending means for reading out the control signals from the storage means and sending them to the video tape recorder when the reservation set time for starting reception of the reserved channel arrives. It consists of Specifically, the storage means is a video tape recorder.
This is a memory in which a remote control signal (hereinafter referred to as a "remote control signal") of a video player is stored, and the sending means has an optical transmission unit that transmits the remote control signal read from the memory in the form of light, - The precoder has an optical receiving unit that receives remote control signals transmitted from the optical transmitting unit.

[0060]

[Operation] According to such a configuration, after the BS receiving circuit makes a reservation setting for a channel to be received, at the time of the reservation setting, a remote control signal for setting the video tape recorder to the recording operation state is read out from the memory. and is transmitted in the form of light from an optical transmitting unit. Then, the remote control signal from the optical transmitting unit is received by the optical receiving unit of the video tape recorder, the video tape recorder is set to the recording operation state, and the received signal of the reserved channel supplied from the BS receiving circuit is recorded. will be done.

[0070]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. It should be noted that the same parts as those in the prior art will be given the same reference numerals and the explanation thereof will be omitted. In this embodiment, in a television receiver having a reservation reception function that allows reservation of channels to be received by the BS reception circuit, when reception of the reservation channel is started, the video tape recorder to which the reception signal is supplied is put into the recording operation state. Provide a setting means to set the
This system allows a video tape recorder to automatically record the received signal of a reserved channel supplied from a BS receiving circuit. Specifically, as shown in FIG. 1, the receiver side includes a memory (18) in which remote control signals for setting the video tape recorder (18) to recording operation and stop states are stored.
28), a drive circuit (30) which is supplied with a remote control signal read from this memory (28) and outputs a light emitting diode drive signal corresponding to the remote control signal to a control output terminal (29), and this control output. The remote controller is read out from the memory (28) by the infrared light emitting diode connected to the terminal (29) and inside the light emitting part (31A) being driven to emit light by the light emitting diode drive signal from the drive circuit (30). An optical transmission unit (31) that transmits a signal in the form of light is provided, and when a tuning microcomputer (14) with a reservation reception function reaches the reservation setting time, it reads the remote control signal from the memory (28) and sends it to the drive circuit ( 30), the BS receiving circuit (6) receives the reserved channel, and the video tape recorder (18) side receives the remote control signal transmitted from the optical transmitting unit (31). An optical receiving unit (32) is provided. still,
The remote control signal for setting the recording operation and stop state is stored in the memory (28) when the memory switch (33) is closed and the channel selection microcomputer (14) is set to the memory mode.
When the remote control signal transmitted in the form of light from the remote control transmitter of the video tape recorder (18) is received by the optical receiver (in this case, a phototransistor) (34), the tuning microcomputer (14) receives the signal. Stores remote control signals in memory (
This is done by writing to a predetermined address in 28).

Therefore, in such a television receiver, the BS receiving circuit (6) is controlled by the channel selection microcomputer (14).
), the channel selection microcomputer (14) reads out a remote control signal from the memory (28) to set the video tape recorder (18) to recording mode at the time set for the reservation and drives the video tape recorder (18). Supplied to the circuit (30). The drive circuit (3) receives this remote control signal.
0) outputs a light-emitting diode drive signal to drive the infrared light-emitting diode of the optical transmitter unit (31), causes the optical transmitter unit (31) to transmit a remote control signal, and drives the video tape recorder (18). ) into recording mode. In addition, after outputting a remote control signal to the drive circuit (30), the channel selection microcomputer (14) controls the BS reception circuit (6) to receive the reserved channel, and from the BS reception circuit (6). The audio and video signals are sent to the video tape recorder (18) through the audio and video output terminals (19) and (20).
) is output. As a result, the signal received by the BS receiving circuit (6) of the reserved channel is supplied to the video tape recorder (18) in the recording operation state and is recorded. Then, when the reception end time of the reserved channel in the BS receiving circuit (6) arrives, the channel selection microcomputer (14) reads out the remote control signal for setting the video tape recorder (18) to a stopped state from the memory (28). Drive circuit (30)
supply to. Then, the driving circuit (30) that receives this remote control signal drives the infrared light emitting diode of the optical transmitting unit (31), causing the optical transmitting unit (31) to transmit the remote control signal, and thereby transmitting the remote control signal to the video tape recorder ( 18) is set to a stopped state. Similarly, reception and recording of the next reserved channel will be automatically performed when the scheduled time has arrived. In this embodiment, the optical transmitting unit is attached externally to the receiver, but it may be built in, or conversely, the memory may be attached externally together with the optical transmitting unit.

[0090]

As described above, according to the present invention, a remote control signal of a video tape recorder is stored in advance in a television receiver having a reserved reception function that allows reservation of channels to be received by a BS receiving circuit. Then, when the reserved time arrives, the remote control signal is read out and sent to the video tape recorder to set it to recording mode. Therefore, after setting the reception channel reservation, the video tape recorder can be set to another one. Even when the apparatus is set to the operating state and used, it is possible to reliably perform reception according to the reservation setting schedule and automatically record the received signal on a video tape recorder.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a conventional example.

[Explanation of symbols]

6 BS receiving circuit 14　Tuition selection microcomputer 18 Video tape recorder 28 Memory 31 Optical transmitter unit 32 Optical receiving unit

Claims (4)

[Claims] Claim 1: In a television receiver having a reservation reception function that allows reservation settings for channels to be received by a reception circuit, an external recording device to which a reception signal is supplied is set to a recording operation state when reception of a reserved channel is started. A television receiver characterized by being provided with a setting means. 2. The setting means includes a storage means for storing a control signal of an external recording device, and a storage means for reading out the control signal from the storage means when a reservation setting time for starting reception of the reserved channel arrives to perform external recording. 2. The television receiver according to claim 1, further comprising a transmitting means for transmitting to a device. 3. The storage means is a remote controller of an external recording device.
The remote control signal is a memory in which a remote control signal is stored, and the sending means has an optical transmitting unit that transmits the remote control signal read from the memory in the form of light, and the external recording device receives the remote control signal transmitted from the optical transmitting unit. 3. The television receiver according to claim 2, further comprising an optical receiving unit for receiving a remote control signal. 4. The television receiver according to claim 1, wherein the receiving circuit is a receiving circuit for satellite broadcasting.