JPH05168019A - Television receiver - Google Patents

Abstract

PURPOSE:To avoid useless retrieval when retrieving program contents of a television station including a station to transmit waves hanging or detaching scramble. CONSTITUTION:This receiver is equipped with a television tuner 1 and a tuner controller 3 to supply tuning control signal to this tuner and based on channel position ascending control (or descending control, the tuning control signal of a receiving channel corresponding to an upper (or lower) channel position from a current channel position is generated from the controller 3 and supplied to the tuner 1 for tuning. It is detected by the controller 3 whether the received signal due to the tuning is set in a scramble state or not and when the signal isn't set in the scramble state, the reception of the station at the receiving channel is continued. When the signal is set in the scramble state, the tuning control signal of the receiving channel corresponding to an upper (or lower) channel position from the current channel position is generated from the controller 3 again and supplied to the tuner 1 for tuning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver suitable for application to a television receiver capable of receiving a BS (broadcast satellite) station and / or a CS (communication satellite) station.

[0002]

2. Description of the Related Art BS stations and CS stations include those in which the transmitted radio waves are always scrambled, those in which they are not scrambled at all, and those in which they can be removed or removed. For the BS station and the CS station, the overall configuration of signal multiplexing of audio signals shown in FIG. 5 [see ((Introduction to Satellite Broadcasting: Japan Broadcasting Corporation, Issue 1 June 1, 1984)]) As shown in the figure
Mode). The transmitted radio waves include those whose voice mode is fixed to the A mode or B mode and those whose voice mode changes.

[0003]

At the BS station and the CS station, when the television tuner receives the transmission radio waves of the station that scrambles or de-scrambles, there is no problem if there is a descrambler corresponding to it. In that case, there is no choice but to receive when the radio waves transmitted by the station are descrambled. In order to search the contents of the program of the TV station, if the TV tuner is made to select the receiving channel at the position one channel above or one channel below the current channel position by controlling the channel position up or down, If the transmission radio waves of the station that is scrambled or removed are scrambled, the transmission radio waves of the scrambled station will be received and the image will be received, resulting in an unnecessary search. ..
In addition, in order to search the contents of the program of the TV station, the TV tuner is made to select the receiving channel at the position one channel above or one channel below the current channel position by controlling the channel position up or down. If BS
In the case of selecting and receiving only the radio mode of the A mode or the B mode among the transmission radio waves from the station and the CS station, the transmission radio wave of the unnecessary voice mode is received and the image is received. Therefore, a useless search will be performed.

In view of such a point, the present invention is capable of avoiding unnecessary search when searching the contents of a program of a TV station including a station that transmits a scrambled or deviated transmission radio wave. It is intended to propose a device. Further, the present invention aims to propose a television receiving device capable of avoiding unnecessary retrieval when retrieving the contents of a television program of a station transmitting a transmission radio wave whose voice mode is A mode or B mode. It is a thing.

[0005]

A television receiver according to the present invention comprises a television tuner 1 and a tuner controller 3 for supplying a tuning control signal to the television tuner 1, and a channel position raising control ( Or down control), a tuner control device 3 generates a channel selection control signal of a reception channel corresponding to a channel position one level above (or one level below) the current channel position, and supplies it to the television tuner 1. The tuner control device 3 determines whether or not the received signal by the tuning is scrambled.
When it is detected that it is not in the scramble state, it continues to receive the station of the receiving channel, and when it is detected that it is in the scramble state,
The tuner control device 3 generates a channel selection control signal of a reception channel corresponding to a channel position one level above (or one level below) the current channel position, and supplies it to the TV tuner 1 for channel selection. ..

Another television receiver according to the present invention has a television tuner 1 and a tuner controller 3 for supplying a tuning control signal to the television tuner, and is based on channel position raising control (or lowering control). , A tuner control device 3 generates a channel selection control signal of a reception channel corresponding to a channel position one level above (or one level below) the current channel position, and supplies it to the TV tuner 1 for channel selection. The tuner control device 3 detects whether the audio mode of the received signal by tuning is the A mode or the B mode, and when it is detected that the audio mode is the A mode (or the B mode), the station of the receiving channel is detected. When the B mode (or A mode) is detected, the tuner controller 3 again moves up one channel from the current channel position ( The generates a tuning control signal of the receiving channel corresponding to the channel down one position), so that allowed to channel selection is supplied to the TV tuner 1.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the present invention is applied to a television receiver having a tuner capable of receiving a BS station and a CS station together with a terrestrial station will be described in detail below with reference to the drawings. This television receiver is incorporated in the VTR here. The television receiver may be built in the television receiver.

First, the configuration of the television receiver according to the embodiment will be described with reference to FIG. The tuner 1 is a television tuner, which is composed of a BS station reception tuner block, a CS station reception tuner block, and a VHF / UHF station reception tuner block. The descrambler 2 is connected to the BS and CS tuner blocks of this tuner 1,
When the transmitted radio waves of the BS station and the CS station are scrambled, this is descrambled. The tuner control device 3 is a circuit that supplies a tuning control signal to the tuner 1 and causes the tuner 1 to perform tuning, and includes a microcomputer (CPU). Also, a scramble detection signal (video scramble detection signal, audio scramble detection signal) detected from the received signal selected by the tuner 1, an audio mode detection signal indicating whether the audio mode is A mode or B mode, etc. Is supplied to the tuner control device 3 as a transmission information signal.

The tuner control device 3 is connected to an input device 5 provided with a power switch, tuning means for adjusting channels, video, audio and the like. The remote controller 8 has a transmission circuit 10, a transmitter 9 for transmitting infrared rays, an operation unit (not shown), etc., and an infrared ray modulated by an adjustment signal for power switch, channel selection, video, audio, etc. Is transmitted from the transmitter 9. Transmitter 9 of this remote controller 8
The infrared light transmitted from is received by the receiver 7 and supplied to the receiving circuit 6, which demodulates the modulated adjustment signal and supplies it to the tuner control device 3. The video signal and the audio signal obtained by the received signal processing such as the demodulation of the received signal by the tuner 1 are supplied to the monitor receiver 11 and received.

The tuner preset table memory 4 is
Channel positions (1, 2, 3, 4, 5, ...) Corresponding to the tuning operator of the operation unit of the input device 5 or the controller 8,
Channels corresponding to these channel 1 (reception channels) BS7, BS3, CS20, 4 (VHF), 5 (V
HF), ... Are stored. When a direct channel position control signal or a channel position raising or lowering control signal is supplied to the tuner control device 3 by the tuning operator of the input device 5 or the operation unit of the controller 8, the channel position is determined and the tuner is determined. The control device 3 generates a channel selection control signal for the reception channel corresponding to the channel position, supplies the channel selection control signal to the tuner 1, and the tuner 1 selects the channel.

After this, the description will be given separately for Examples I and II. [Example I] "A" or "B" for a reception channel whose voice mode is fixed to A mode or B mode in advance, and "-" for a reception channel having no voice mode, By operating the input device 5, a control signal is supplied to the tuner control device 3 and stored in the memory 4.
Furthermore, for a reception channel that has no possibility of scrambling, or for a reception channel that can be descrambled even in the scramble state, "-" is not required for scrambling, and in the scramble state, descramble is impossible. For the reception channel, a scramble skippable “◯” is supplied to the tuner control device 3 by operating the input device 5 and stored in the memory 4.

Next, referring to the flow charts (1) and (2) of FIGS. 3 and 4, the input device 5 or the receiving circuit is operated by operating the tuning operator of the operation unit of the input device 5 or the controller 8. The channel position raising or lowering control signal generated from 6 is supplied to the tuner control device 3, and the tuner control device 3 generates a tuning control signal based on this,
The function of the microcomputer of the tuner control device 3 and the channel selection operation of the television receiving device when supplied to the tuner 1 will be described.

In step ST-1, the channel position increase control signal CH-UP is input from the input device 5 or the receiving circuit 6.
If YES, the process proceeds to step ST-2, and if NO, the process proceeds to step ST-9. Channel position (number) in step ST-2
After increasing N by 1, the process proceeds to step ST-3. At step ST-3, from the contents stored in the memory 4,
After finding the reception channel M corresponding to the channel position N + 1, the process proceeds to step ST-4. Step ST
-4, after generating the tuning control signal of the receiving channel M corresponding to the channel position N + 1, step ST-5
Move to. In step ST-5, the reception channel M
After selecting the station and receiving the station of the receiving channel M,
Transition to step ST-6.

In step ST-6, it is determined whether or not the scramble skip unnecessary registration (storage) is performed on the reception channel M in the memory 4.
If YES, it proceeds to step ST-8, and if NO, it proceeds to step ST-7. In step ST-7, it is judged whether or not a scramble signal (detection signal) is detected from the reception signal of the station of the reception channel M,
If YES, the process proceeds to step ST-9, and if NO, the process proceeds to step ST-8. In step ST-8, the tuner 1 continues the reception of the channel M station and ends.

In ST-9, after the reception of the channel M is stopped, the process returns to step ST-2 and the channel position N is increased by 1 again. Thus, channel N is 1
When the number is increased again, the fact that the receiving channel is in the scrambled state is displayed on the monitor receiver 11 or a dedicated display, or the screen in the scrambled state is displayed on the monitor receiver 11 for a short time. To When YES at step ST-7, through step ST-9,
Return to step ST-2 and set the channel position N to 1 again.
Only increase. In this way, when the channel N is increased by 1 again, the fact that the receiving channel is in the scrambled state is displayed on the monitor receiver 11 or a dedicated display, or the screen in the scrambled state is displayed as described above. Is displayed on the monitor receiver 11 for a short time.

In step ST-10, the channel position increase control signal CH-U is input from the input device 5 or the receiving circuit 6.
It is determined whether or not P has occurred. If YES, the process proceeds to step ST-11, and if NO, step ST-1.
Return to. In step ST-11, the channel position (number) N is increased by 1, and then the process proceeds to step ST-12. In step ST-12, the reception channel M corresponding to the channel position N + 1 is found from the stored contents of the memory 4, and then the process proceeds to step ST-13. In step ST-13, a channel selection control signal for the reception channel M corresponding to the channel position N + 1 is generated, and then the process proceeds to step ST-14. In step ST-14, the receiving channel M is selected and the station of the receiving channel M is received, and then the process proceeds to step ST-15.

In step ST-15, it is determined whether or not the scramble skip-necessary registration (storage) is performed on the reception channel M in the memory 4.
If YES, the process proceeds to step ST-17, and if NO, the process proceeds to step ST-16. Step ST-1
At 6, it is determined whether or not a scramble signal (detection signal) is detected from the reception signal of the station of the reception channel M. If YES, the process proceeds to step ST-18 and NO.
If so, the process proceeds to step ST-17. Step ST
At -17, the tuner 1 continues reception of the channel M station and ends.

In ST-18, after the reception of the channel M is stopped, the process returns to step ST-11 and the channel position N is increased by 1 again. Thus, channel N
Is incremented by 1 again, as in the above, the fact that the receiving channel is scrambled is displayed on the monitor receiver 11 or a dedicated display, or the scrambled screen is displayed on the monitor receiver 11 To be displayed for a short time. When YES at step ST-16, go through step ST-18 and return to step ST-11,
Increase the channel position N by 1 again. Thus, when the channel N is incremented by 1 again, the fact that the reception channel is in the scrambled state is displayed on the monitor receiver 11 or a dedicated display, or the scrambled state is displayed, as described above. Monitor screen 11
To be displayed for a short time.

[Embodiment II] Based on the channel position raising control (or lowering control) generated from the input device 5 or the receiving circuit 6 by the operation of the tuning operator of the operation unit of the input device 5 or the controller 8, The tuner control device 3 generates a tuning control signal of a reception channel corresponding to a channel position one above (or one below) the current channel position,
The tuner control device 3 detects whether the audio mode of the received signal due to the channel selection is the A mode or the B mode by supplying it to the TV tuner 1 and selecting the A mode (or B mode). When the B-mode (or A-mode) is detected, the station of the reception channel continues receiving.
Mode), or if it is detected that neither the A mode nor the B mode is detected, the tuner controller 3
May generate a channel selection control signal for a reception channel corresponding to a channel position one level above (or one level below) the current channel position and supply it to the television tuner 1 for channel selection.

Although illustration and description of a new flow chart corresponding to the flow charts of FIGS. 3 and 4 in this case are omitted, some of the steps of the flow charts of FIGS. 3 and 4 are changed as follows, and others. If the part of is left as it is, a new flowchart can be obtained. That is, in this case, in the memory 4, the voice mode is A mode (or B mode).
Mode) "A" (or "B") for receiving channels, "-" for receiving channels that are neither A mode nor B mode, for receiving channels that change between A mode and B mode "A / B" are stored respectively. And FIG. 3 and FIG.
In step ST-6 and step ST-15, it is determined whether or not there is B mode (or A mode) registration for the reception channel M. In step ST-7 and step ST-16, it is determined whether the B mode (or A mode) signal (detection signal) is detected from the reception signal of the reception channel M.

[0021]

As described above, according to the present invention, it is possible to avoid a wasteful search when searching the contents of a program of a TV station including a station that transmits a scrambled or deviated transmission radio wave. A receiving device can be obtained. According to another aspect of the present invention described above, there is provided a television receiver capable of avoiding an unnecessary search when searching the content of a television program of a station transmitting a transmission radio wave whose audio mode is the A mode or the B mode. Obtainable.

[Brief description of drawings]

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

FIG. 2 is a table diagram showing an example of stored contents of a memory of the embodiment of FIG.

FIG. 3 is a flowchart (1) for explaining the function of the tuner control device of the embodiment and the tuning operation of the embodiment.

FIG. 4 is a flowchart (2) for explaining the function of the tuner control device of the embodiment and the tuning operation of the embodiment.

FIG. 5 is a diagram showing an overall configuration of signal multiplexing of satellite broadcast audio signals.

[Explanation of symbols]

 1 Tuner 2 Descrambler 3 Tuner Controller 4 Tuner Preset Table Memory 5 Input Device 6 Receiver Circuit 7 Receiver 8 Controller 9 Transmitter 10 Transmitter Circuit 11 Monitor Receiver

Claims (2)

[Claims] 1. A television tuner and a tuner control device for supplying a channel selection control signal to the television tuner, and based on channel position raising control (or lowering control),
1 from the current channel position from the tuner controller
Generate a channel selection control signal for the receiving channel corresponding to the next (or one) channel position and supply it to the above TV tuner for channel selection. Whether or not the received signal by that channel selection is scrambled Is detected by the tuner control device, and when it is detected that the scramble state is not present, reception of the station of the reception channel is continued, and when it is detected that the scramble state is set, the tuner control device is again received. From the current channel position, a channel selection control signal for the receiving channel corresponding to the channel position one level above (or one channel below) the current channel position is generated and supplied to the television tuner for channel selection. TV receiver. 2. A television tuner and a tuner control device for supplying a tuning control signal to the television tuner, and based on channel position raising control (or lowering control),
1 from the current channel position from the tuner controller
Generates a channel selection control signal for the receiving channel corresponding to the channel position one level above (or one channel below) and supplies it to the above TV tuner for channel selection, and the audio mode of the received signal due to that channel selection is A mode. The tuner control device detects whether there is an A mode or a B mode, and when it is detected that the A mode (or the B mode), the station of the reception channel continues to receive the B mode (or the A mode). ) Is detected again, the tuner controller again moves up (or down) one channel from the current channel position.
A television receiving device, characterized in that a channel selection control signal for a receiving channel corresponding to the channel position is generated and supplied to the television tuner for channel selection.