JPH0432392A - Monitor device incorporating a satellite broadcast tuner - Google Patents

Abstract

PURPOSE:To attain simple channel button operation for a BS channel operation by selecting the input mode into an input mode in which an output from a descramble unit is selected as a video audio source when a scramble broadcast channel stored in a storage means is received. CONSTITUTION:When a BS channel command is outputted from a remote commander RC and inputted to a CPU 12, the CPU 12 discriminates whether or not the BS channel is a registered channel. When the channel is a registered scramble processing broadcast channel, the CPU connects a terminal I3 of an input mode selection circuit section 6 to the channel so as to be registered corresponding to the channel and allows the BS tuner 2 to select the channel. Thus, the BS channel operation is not complicated and difficult and simple channel button operation is attained independently of the scramble processing broadcast.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a monitor television device with a built-in satellite broadcast tuner.

[Summary of the Invention] A monitor device with a built-in satellite broadcast tuner according to the present invention uses, as a video and audio source, a satellite broadcast channel that is scrambled and broadcast, and an output from a descrambling unit that descrambles the scramble process of the satellite broadcast channel. The selected input mode is memorized, and when receiving a scrambled satellite broadcast channel, the input mode that uses the satellite broadcast tuner as the video and audio source is automatically changed to the input mode that uses the descrambling unit as the video and audio source. This allows the switch to be made.

[Prior Art] With the introduction of charges for receiving satellite broadcasting, some satellite broadcasting channels have appeared that perform scramble processing on video signals before broadcasting. Once scrambled and broadcast, the channel is simply tuned to a satellite tuner (hereinafter referred to as
If the video is only received using a BS tuner (BS tuner), the video will not be displayed on the monitor screen. To output a video, after receiving it with a BS tuner, the received signal is once input to a decoder unit (descrambling unit) to cancel the scrambling process, and the video signal (video signal) output from the descrambling unit is and R audio signals) must be supplied to the monitor unit. (
In other words, if you do not use a descrambling unit, you cannot watch the satellite broadcast of that channel. The input mode of the monitor device is different when viewing a broadcast and when viewing a satellite broadcast on a channel that is not scrambled.

In other words, if the monitor device has a built-in BS tuner, during normal satellite broadcasting, the circuitry inside the monitor device will operate in normal BS tuner compatible mode without using the external input terminal, but when viewing scrambled broadcasts, is the built-in BS
After being received by the tuner, the detected signal is first output to a descrambling unit which is an external device, and the descrambled signal is obtained from the external input terminal connected to the descrambling unit of the monitor device and output on the screen. The circuit system within the monitor device must be switched to external input mode for operation.

Therefore, for example, when switching from a normal satellite broadcasting channel to a scrambled satellite broadcasting channel, it is necessary to perform a channel switching operation and an operation of switching the input mode of the monitor television apparatus.

For this reason, despite having a built-in BS tuner,
In addition to making the BS channel operation quite complicated, this also poses a problem in that a user who is not familiar with the equipment and does not understand the input mode of the monitor device may be unable to perform channel switching operations.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and it is possible to view satellite broadcasts of each channel with or without scrambling by just normal channel operations. In order to make it possible to perform the A monitor device with a built-in satellite broadcast tuner is provided with a control means capable of switching an input mode to an input mode corresponding to a descrambling unit stored for the channel when receiving a broadcast channel.

[Function] A satellite broadcasting channel that is scrambled and broadcast and an external input terminal to which a descrambling unit for descrambling the scrambling is connected are stored in the memory means in advance. When a channel that requires scrambling processing is selected,
The control means can change the input mode corresponding to the channel by switching the switching circuit section for switching the input signal based on the data stored in the memory means.

[Embodiment] FIG. 1 is a block diagram showing an embodiment of a monitor device with a built-in BS tuner of the present invention.

- 1 surrounded by a dotted chain line indicates the BS tuner built-in monitor device, and 2 is a descrambling unit connected separately to the BS tuner built-in monitor device 1.

3 is a BS tuner, into which a signal received by a satellite broadcasting antenna 3a, amplified by a BS converter 3b, and converted to a first intermediate frequency is inputted, and a channel is selected. In addition, in case the selected broadcast channel is being scrambled, a detection output terminal T DET and a digital control data output (pit stream) terminal TBT for the descrambling unit 2 are provided and connected to the descrambling unit 2. has been done. In other words, in the case of scrambled broadcasting, control data and detection signals for descrambling processing are supplied to the descrambling unit 2, and the descrambling processing is canceled in the descrambling unit 2. signal) will be obtained.

Reference numeral 4 denotes an external input terminal section, which is provided with three terminals (1) and -I3, to which video signals from three external AV devices can be input. For example, a laser disc is connected to terminal I, a VTR is connected to terminal I2, and the descrambling unit 2 is connected to terminal 3, and the descrambled video signal is input from terminal I. be done.

A TV tuner 5 detects and amplifies radio waves received by the TV antenna 5a.

Video signals output from the BS tuner 3, external input terminal section 4, and TV tuner 5 are each supplied to an input mode selection circuit section 6, and a predetermined input video signal (input mode) is selected. The selected video signal is converted to an intermediate frequency by the intermediate frequency amplification section 7, and is further output as video and audio from the monitor CRTIO, speaker 11L, and IIR via the video signal processing section 8 and the audio signal processing section 9. .

Reference numeral 12 denotes a system controller (CPU), which controls channel selection operations in the BS tuner 3 and TV tuner 5, mode switching operations in the input mode selection circuit section 6, video signal processing section 8 and audio signal processing section 9 via the control bus B. Various types of signal processing are controlled based on user operations and control programs. Control data and control programs are held in the ROM 13 or RAM 14.

Reference numeral 15 denotes an infrared light receiving section, which detects a command signal output from the remote commander RC by a user's operation. The detected infrared command signal is amplified as an electrical signal in the operation signal generating section 16, and further converted into a digital code and inputted to the CPU 12 via the control bus B. Although not shown, the operation information is also sent to the CPU 1 when the panel button provided on the outer casing is operated.
2.

In the monitor device with a built-in BS tuner configured as described above, the input mode is different when viewing normal satellite broadcasting and when viewing scrambled satellite broadcasting. That is, in the input mode selection circuit section 6, I3
It is necessary to switch between the terminal and the BS terminal.

In such a case, in this embodiment, as an initial setting before use, the CPU 12 first executes a registration operation as shown in the flowchart of FIG. 2, for example, by the user's operation.

That is, after operating the remote commander RC and setting it to the registration mode (Floo), the terminal to which the descrambling unit 2 is connected is selected as an input. In other words, in the input mode selection circuit section 6, 1. Operate so that the terminal is connected (FIOI.

FI02), and then select the satellite broadcasting channel that has been scrambled and broadcast (F2O
3, F2O3). When the user completes the above operations, the CPU 12 registers the selected input mode and the satellite broadcasting channel in the RAM 14 in correspondence (F1O51゜If the BSII channel is to be broadcast after being scrambled) , "Ii'B5-11: Input terminal work," is written to a predetermined address in the RAM 14.

After the registration is executed in this manner, when a BS channel switching command is input, the CPU 12 performs the control shown in the flowchart of FIG. 3.

That is, when the BS channel command is output from the remote commander RC and input to the CPU 12 (F2
00), first, it is determined whether the BS channel is the registered channel (F201), and if it is an unregistered BS channel, the BS terminal is connected in the input mode selection circuit section 6 (F202). , B
Select the relevant channel on S tuner 2 (F
204).

However, if it is a registered BS channel (that is, a scrambled broadcast channel), the I3 terminal is connected in the input mode selection circuit section 6 (F203) so that it is registered corresponding to that channel, and the BS tuner 2 Select the relevant channel (F204)
.

By the CPU 12 performing the above control, the user can control all B channels by simple channel operation (channel up/down button operation or direct channel button operation) regardless of whether it is scrambled broadcast or not.
You will be able to watch S channel broadcasts. For example, when switching from BS7 channel to BSII channel which is scrambled broadcasting, or when switching from B511
There is no need to perform an input mode switching operation when switching from a channel to a B515 channel that is not scrambled broadcasting. Therefore, even an inexperienced user will not be confused by the operation.

Note that the registration operation procedure is not limited to the procedure shown in FIG. 2, as long as the scrambled broadcast channel and the corresponding input mode of the descrambling unit 2 can be stored. For example, it is not possible to consider a registration procedure in which the input mode and BS channel are registered in correspondence by setting the input mode to a descrambling unit compatible input mode, then changing to the registration mode and selecting the BS channel. Furthermore, if the channel and input mode are known in advance, it may be stored in a ROM as registered data during the manufacturing process.

[Effects of the Invention] As explained above, the monitor device with a built-in satellite broadcast tuner of the present invention automatically changes the input mode when selecting a BS channel to be scrambled and broadcast based on information stored in the memory means. Therefore, regardless of whether or not the broadcast is scrambled, BS channel operation does not become complicated or difficult, and can be accomplished with simple channel button operations, making it easier for inexperienced users to switch to the descramble unit compatible mode. It can be easily handled by even the most advanced users.

Input terminal section, 6 is input mode selection circuit section, 12 is CPU
, 14 indicates a RAM.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of a monitor device with a built-in satellite broadcast tuner according to the present invention, Fig. 2 is a flowchart showing an example of registration operation in this embodiment, and Fig. 3 is a flowchart showing an example of a registration operation in this embodiment. It is a flowchart which shows an example of control operation.

Claims (1)

[Scope of Claims] A monitor device with a built-in satellite broadcast tuner capable of outputting audio and video in response to a plurality of video and audio sources including at least a satellite broadcast tuner, which includes a satellite broadcast channel that is scrambled and broadcast. , storage means for storing the output from the descrambling unit that descrambles the satellite broadcasting of the channel in correspondence with an input mode selected as a video/audio source; The present invention is characterized by comprising a control means capable of switching the input mode to an input mode in which the output from the descrambling unit is selected as the video/audio source when receiving a satellite broadcast of a channel broadcast on the Monitor device with built-in satellite broadcast tuner.