JPH05276456A - Television receiver - Google Patents

Abstract

PURPOSE:To enjoy the idea of well-balanced program editing of broadcasting stations by receiving only specified channels, namely, that of limited broadcasting stations. CONSTITUTION:This device is composed of a tuner circuit 1 as a tuning means to receive only the television radio waves of the specified channel decided in advance among high frequency signals supplied from antennas, local oscillator 2 to generate signals at a prescribed fixed frequency, and mixer 3 to mix tuned signals from the circuit 1 and local oscillating signals from the oscillator 2 and to convert them to intermediate frequency(IF) signals. The IF signals outputted from the mixer 3 are supplied to an IF amplifier circuit. On the other hand, since this television receiver is not provided with channel buttons and a voltage generating circuit on a control panel and it is necessary to provide only a power supply switch and a volume control means, the compact and low-priced receiver can be provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a consumer television receiver for receiving television waves coming from a broadcasting station.

[0002]

2. Description of the Related Art FIG. 2 shows a part of a conventional electronic tuner of a television receiver. In this figure, a channel button 4 for selecting a channel, a voltage generating circuit 5 for generating a voltage in response to an operation of the corresponding channel button 4,
It is composed of a tuning circuit 6. The tuning circuit 6 includes a variable capacitance diode 7, capacitors 8 and 9, a tuning coil 10,
It has a switching diode 11.

Next, the operation of the above configuration will be described.
The user has, for example, channel button 4 for 5 channels
When 5 is operated, a predetermined voltage corresponding to channel 5 is applied from the corresponding voltage generating circuit 55 to the variable capacitance diode 7. The variable-capacitance diode 7 has a property that the size of the capacitance changes according to the applied voltage, and has a different capacitance depending on the operated channel button 4. Therefore, in the tuning circuit 6, the capacitor 8
And in cooperation with the tuning coil 10 is tuned to the frequency of channel 5. The switching diode 11 is V
It is a switching means between HF and UHF.

As described above, in the conventional television receiver, the user can freely select a desired channel by operating an arbitrary channel button.

[0005]

However, in the above-mentioned conventional television receiver, since the channels can be freely selected, various information can be freely selected from many channels. The tendency is to select only the information about the tastes. Therefore, there is a problem in that even if balanced broadcast program information is edited and broadcast at a broadcasting station that provides information, the intention of the editing is not transmitted to the user, that is, the viewer.

The present invention solves the above-mentioned problems of the prior art, and enjoys the idea of a well-balanced program editing of a broadcasting station because only a specific channel, that is, a broadcasting station, is received. It is an object of the present invention to provide a television receiver capable of performing.

[0007]

In order to achieve the above object, the present invention comprises a tuning means for receiving only the broadcast of a specific limited channel in advance.

[0008]

According to the present invention, since only the broadcast of a predetermined specific channel is received by the above configuration, it is possible to prevent the tendency that only the information of the biased personal preference is selected.

[0009]

1 is a schematic block diagram of an embodiment of the present invention. In this figure, reference numeral 1 is a tuning circuit which is a tuning means for receiving only a television radio wave of a predetermined specific channel from a high frequency signal supplied from an antenna (not shown), and 2 is a predetermined fixed value. It is a local oscillator that generates a frequency signal. Reference numeral 3 is a mixer for mixing a tuning signal of a specific channel output from the tuning circuit 1 and a local oscillation signal from the local oscillator 2 and converting it into an intermediate frequency signal. The intermediate frequency signal output from the mixer 3 is supplied to an intermediate frequency amplifier circuit (not shown).

Further, the operation panel (not shown) which is the operation means of the television receiver of the present invention does not have the channel button and the voltage generation circuit which are the channel selection means, and the power supply for turning the power on and off Since it is necessary to provide only the switch as the closing means and the volume adjusting means for adjusting the volume, a compact and low-cost television receiver can be realized.

[0011]

As is apparent from the above embodiment, the present invention is provided with a tuning means for receiving only a specific channel, so that only a specific broadcasting station receives that channel. There is an effect that it is possible to enjoy the well-balanced program editing idea of the station and prevent the tendency that only the information of the biased personal preference is selected.

Further, since only the power switch and the volume for adjusting the volume are provided on the operation panel and there is no channel button or the like for selecting the channel, it is possible to realize a compact and low-priced television receiver. There is.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a tuner in a television receiver according to an embodiment of the present invention.

FIG. 2 is a diagram showing a part of a configuration of an electronic tuner of a conventional television receiver.

[Explanation of symbols]

 1 Tuning circuit 2 Local oscillator 3 Mixer

Claims (2)

[Claims] 1. A television receiver provided with a tuning means for receiving only a broadcast of a predetermined limited channel. 2. An operation means having only a power-on means for turning on / off the power supplied to itself and a volume adjusting means for adjusting the volume and not having a channel selecting means for selecting a channel. 1. The television receiver described in 1.