JPS63299582A - Television receiver incorporating satellite broadcasting receiver - Google Patents

Abstract

PURPOSE:To easily receive satellite broadcasting and television broadcasting with the operation of one remote controller and to realize channel display or watch display when a video is cut by providing a video selector, a video cut circuit and a TV/character interface circuit. CONSTITUTION:Based on the control signal of the remote controller 14, the watch display or the channel display is projected through a character generator 49 connected with a control microcomputer 16 and the TV/character interface circuit 33 connected with the character generator 49. Then, along the flow of a television video signal input and a satellite broadcasting video signal, the video selector 10, the video cut circuit 31 and the TV/character interface circuit 33 are successively arranged. Thus receivers which receive the satellite broadcasting and ground broadcasting are integrated and both broadcasting can be easily received by the operation of the one remote controller 14. Besides, the received channel or the time can be displayed on a CRT even when the video is cut.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a built-in satellite broadcast receiving device for use in general households, which allows both satellite broadcasting and television broadcasting to be received by one remote control device. Regarding television receivers.

[Prior Art] Satellite broadcasting called BS is transmitted by frequency-dividing an audio signal into an FM-modulated video signal. In addition to the video signal, this satellite broadcasting can be transmitted as an audio signal, and in transmission mode A, it can be used as a monaural, stereo, or duplex television audio signal.
While it is transmitted as an independent audio signal as a PCM signal (10 to 14 bits, 2 channels), it is transmitted in monaural, stereo, and duplex (two languages).

In addition, in transmission mode 8, TV audio is sent as a PCM signal (16 bits, 2 channels), and is transmitted in monaural, stereo, and duplex (2 channels [KIg!i), and especially between audio The reception operation by the person in charge was cumbersome, so they had to use a dedicated receiver for satellite broadcasting, and the signal processed by this receiver was sent to the existing television receiver.

On the other hand, regarding terrestrial television broadcasting as well, in addition to video signals, audio signals are transmitted in monaural, stereo, and duplex (two languages) format.

[Problems to be solved by the invention] Users who wish to receive both types of broadcasts have to perform separate operations such as turning on the power separately because the transmission systems are different, the broadcasting modes are different, and the equipment is different. In short, in order to switch between satellite broadcasting and terrestrial broadcasting, complicated operations must be performed for each in order to receive desired reception.

In addition, since the sound of satellite broadcasting can reproduce excellent sound as a PCM signal, it is sometimes necessary to check the time on a clock or the receiving channel even when the video is cut and only the music is enjoyed.

[Means for Solving the Problems] This invention solves the above problems, and integrates a receiver for receiving II star broadcasts and terrestrial broadcasts, and easily uses one remote controller. It is designed so that it can be operated and received.

Furthermore, it is possible to display the receiving channel or clock on the CRT even when the satellite broadcast or terrestrial television broadcast image is cut.

[Examples] Examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows a block diagram of a television receiver with a built-in satellite broadcast receiver according to the present invention, and FIG.
An SHF band television signal and audio signal are received from a satellite by an S antenna 1, and are frequency-converted and amplified by a converter 2, which is an outdoor unit. These are the parts outside the receiver of the present invention.

The signal from the converter 2 is further frequency-converted (one wave such as 70, 130, 400 MHz band) by the 2nd converter 3 and sent to the 2ndlF4, and this output signal is converted to the FMj
aWA5 is done.

A video signal is extracted from the output of the FMIm circuit 5 via an audio trap 6, and this signal is sent to Qe and Enf.

Deenfu at 7? After being signaled, energy spread signal removal 8 is performed, and this signal is video amplified 9 and connected to the BS terminal of the video selector 10.

On the other hand, the audio signal is processed by the low-pass filter 11 of the audio LPF.
After demodulating the audio subcarrier signal via the 4-phase DPSK circuit 12, #li modulation of the PCM signal is performed.

In the PCM demodulation circuit 13, the transmission format is automatically set to A mode and B mode by an automatic detection circuit, and is transmitted in a combination of monaural, stereo, and duplex according to the program of the broadcasting station. , if this signal is selected by the receiver, the remote control (transmitter) 1
4, an instruction coded signal is transmitted by infrared rays, and this signal is received by the remote control decoder 15. After decoding the instruction code by the control microcomputer 1G, the same PC
Instructs the M demodulation circuit 13, and sends the A: signal processed according to this instruction to the D/A converters 17 and 1g, respectively, and passes through the low-pass filters of L P F 19, 20, and 21.22, respectively, and then outputs the audio signal. Selector 23
are input to each as a low frequency audio signal.

This input signal is converted to monaural by the PCMM11 circuit 13.
This assumes that stereo or dual audio is processed.

The gain is controlled from the 2nd IF 4 to the 2nd converter 3 by the AGC circuit 24.
The circuit 24 is for maintaining optimal satellite broadcast reception conditions even when it rains.

Further, the AFT25 voltage is sent from the FMt1w4 circuit 5 to the channel selection control circuit 26, which adjusts the local oscillation frequency to W4 according to instructions from the control microcomputer 1G, and stabilizes the reception frequency using the AFT25 voltage. The resulting signal is input to the 2nd converter 3.

To explain the television receiver part, Ll/V
LIHF band and vHF input from TV antenna 27
An Ll/VTV tuner 28 receives a television signal in the L1/VTV tuner 28, converts this signal into an intermediate frequency signal, transmits it to an IF amplifier 29, amplifies it, and then separates it into a video signal and an audio signal.

This U/VTV antenna 27 is an external part of the receiver of the present invention.

The video signal is amplified by the evening party amplifier circuit 30 and input to the video selector 10, while the video signal of the satellite broadcasting BS, VTR, etc. is input to the external input terminal V1. V2 are respectively input, and the video selector 10 selects one of the video signals and outputs it to the video cut circuit 31. This selection is instructed by the remote controller 14, and any one is selected by a switching instruction signal from the control microcomputer circuit 16.

The video cut circuit 31 is a control microcomputer circuit 1G.
This is to prevent the video signal from being sent to the CRT circuit 32, and to ground the video signal to make it a black level video signal. Therefore, character generator circuit 4
The signal from 9 can be displayed as a channel display or a clock display on the CRT 32 via a TV/character interface 33 and a chroma output 34.

When the video cut circuit 31 is not operated, a color video is displayed on the CRT 32 based on any of the video signals provided to the video selector circuit 10 by the video chroma circuit 35 and the deflection circuit 36.

The television audio signal is obtained by separating the audio signal from the output signal of the IF amplifier 29, demodulating the audio signal in an audio signal demodulation section 37, and further converting this signal into monaural and stereo by an audio multiplex signal demodulation circuit 38. .

Processing is performed according to double (two countries) broadcasting. At this time, in which broadcast format the signal from the demodulation unit 37 is being transmitted is determined by the pilot signal in the audio multiplexing demodulation circuit 38, and is displayed by the audio multiplexing display circuit 39.

The output of the audio multiplexing and demodulating circuit 38 is input to the audio selector circuit 23. The audio selector circuit 23 switches the audio to the satellite broadcasting audio according to instructions from the control microcomputer circuit 16 and inputs the audio to the VR control circuit 40 .

The VR control circuit 40 has a mute button 70. Sound ff1L
JP button 68. Based on the operation of the volume DOWN button 69, the control microcomputer circuit 1G determines whether the sound is muted (audio low frequency output signal is zero or very low) or loud (U
P), which controls the audio low level (DOWN), and the audio low frequency output signal obtained in this way is sent to the audio amplifier circuit 41.
The power is amplified by L speaker 42 and R speaker 4.
Sound will be emitted at 3.

Note that the U/VTV tuner 28 can be selected using the operation key 4.
4 or by changing the generation frequency of the PLL prescaler 45 according to instructions from the control microcomputer circuit 16.

The power supply circuit 4G consists of a single power supply of AC 100 volts, and constantly supplies power from the microcomputer terminal to the control microcomputer circuit 16, the remote control decoder circuit 15, and the power supply controller 47, and also operates the satellite broadcast receiving circuit according to instructions from the control microcomputer 16. To 881! power is supplied from the TV terminal to the television receiver circuit (10, 28 to 36), from the AUDIO terminal to the audio circuit (23, 37 to 41), and optionally to outlet 1 or outlet 2. controller 47
The power supply circuit 4G is controlled by the power supply circuit 4G.

[Function] The operation of the circuit constructed as described above in relation to the circuit of FIG. 1 will be explained with reference to FIG. 2, which shows the operation surface of the remote control 14 portion of FIG. 1 in detail.

When receiving satellite broadcasting, a. To operate the remote control in Figure 2, press the power button 60.
When the power is turned on, power is supplied to the satellite broadcasting, television receiver, and audio circuits.

b.Press the S button 64 for satellite broadcasting, then select 88 Ch.
(Channel) Press the UP button 17 or DOWN button 78 to confirm whether there is a broadcast or not by checking that the video is displayed.

At this time, the BS channel display (not shown) is also displayed on the signal from the control microcomputer circuit 16.

C1 In this state, the PGM demodulation circuit 13 displays the form of the signal being transmitted from the failed transmitting station, although not shown. That is, audio A mode and dual, stereo, and monaural.
Lineage display. Or display in B mode and one system of dual, stereo, or monaural.

d. At this time, in the case of dual broadcasting in A mode, the TV (
(Audio with the same content as the video) Each time you press button 74, the toggle changes to 2.
The main or sub-audio broadcast of the heavy audio is selectively broadcast from the speaker 4.
2.43, and in the case of dual audio on the independent audio side, each time you press the audio button 73 (the audio of the program opposite to the video), it toggles to change to independent audio or TV audio broadcast, The TV button 74 can be used to change between main and sub.

e. External audio output allows output to other spending devices, and by pressing the external audio chain 75, it is possible to toggle the external audio sequentially from TV audio to independent audio. If there is a double broadcast, press TV button 24.
Alternatively, each time the independent phase 76 is pressed, it can be switched to the main phase 81.

Note that the display of A mode or B mode and the display of dual, stereo, or monaural television audio or independent audio are displayed by determining the control code on the broadcasting station side.

Furthermore, when enjoying high-quality sound from PCM satellite broadcasting, the user can use the video cut button 65 to turn off the video and enjoy only the music. In this case, the clock/timer display button 7
If you press 2, you can display it on the CRT 32, and if you press it again, you can erase the display.

To receive terrestrial television broadcasts, a. Turn on the power button 60 and then press the TV button 61 below the power button to supply power to the television receiver circuit and audio circuit, and then press the channel button. Any number 1 of 79
12) Press to receive the desired channel.

b. At this time, if the content of the audio multiplex broadcast (double, stereo, monaural) is displayed on the audio multiplex display, each time you press the audio switching button 11, the dual main will be toggled. - Substituted sequentially and cyclically.

If only the audio is to be enjoyed, the video can be cut 65 in the same way as described above, and even in this case, the channel display button 79 can be pressed to display the received television channel.

The channel return button 80 is used to return to the channel selection state immediately before the current channel selection.

Bidet number 1. By pressing either of the second video buttons 62 or 63, the video input selected by the video selector circuit can be displayed on the CRT 32.

The outlet buttons (upper 66, lower 67) are outlet 1 in Figure 1.
-1, is related to outlet 2, and supplies or stops supplying power to devices connected to the outlet.

The time setting button 82 is located inside the remote control and is used to set the time by pressing it with a needle-like object through a small hole.After pressing the same phase, the time is set using the hour button 851 minute phase 8G. When the time setting button 82 is pressed again at the time of completion, the process ends.

The i-timer button 83 is used to determine the time when the television receiver or the like is turned on. After pressing the on-timer button 83, the time is determined using the hour button 85 and phase separation 86, and the setting button 87 is pressed to turn on the power. is decided. The off timer button 84 also indicates the off time! 185, phase separation 86 and setting button 8
7. These are both the clock circuit 48 and the control microcomputer circuit 1 in FIG.
6.

AUDIO power supply is provided by the audio selector circuit 23,
These are a VR control circuit 40 and an audio amplification circuit 41.

As described above, based on the signals received by the remote control decoder 15 or the signals from the clock/timer function according to the operation of each phase of the remote controller 14, the control microcomputer circuit 16 sends the satellite broadcast receiver (3 to 9.11 to 13.17). ~22.2
4 to 26), a tuning control circuit 26, PCMt
It controls the I-tuning circuit 13, and the television receiver includes channel selection by a PLL prescaler 45, display by a character generator 49, VR control 401, switching control of audio multi-mode m38, video selector 10, and audio selector 23. With one remote control, you can control switching between the signal from the satellite broadcast receiver and the signal from the television receiver, and supply power to the satellite broadcast receiver, television receiver, audio circuit, etc. from another power source. 14 and can be operated directly in the cylinder.

[Effects] According to the present invention, it is possible to easily perform the complicated reception operation of satellite broadcast reception and television reception using a single remote control, which was previously performed separately.
In particular, it is now possible to display a channel or a clock even when the video is turned off (cut) and only audio broadcasts such as music are being enjoyed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a block diagram of a television receiver with a built-in satellite broadcasting receiver, and FIG. 2 is an operational surface of a remote control for controlling the receiver. This shows a conceptual diagram. 10 is a video filler circuit, 14 is a remote control, 15 is a remote control decoder, 1G is a control microcomputer circuit, 3
1 is a video cut circuit, 33 is a TV/character interface circuit, 48 is a clock circuit, and 49 is a character generator circuit. Patent applicant: Fujitsu General Ltd. Figure 2

Claims (1)

[Claims] Consisting of one power supply, a remote control decoder and a control microcomputer that are constantly supplied with power from the power supply, and based on control signals from the remote control, a character generator connected to the control microcomputer and a TV/character interface circuit connected to the character generator. The control microcomputer controls at least the television video signal input and the satellite broadcasting video signal to display the clock display or channel display. A television receiver with a built-in satellite broadcast receiver, characterized in that the video selector, the video cut circuit, and the TV/text interface circuit are arranged in sequence along the flow.