JP4485908B2 - Broadcast signal processing equipment, television receiver - Google Patents

Description

  The present invention relates to a broadcast signal processing apparatus including a plurality of tuners to which broadcast signals are input, and a television receiver including the same.

A television receiver, a recording device (video deck), etc. (hereinafter referred to as a television receiver) receives a broadcast signal including a channel signal for a plurality of channels (a signal in which a video signal and an audio signal are superimposed). The video signal and the audio signal of one channel selected through the operation means such as a remote controller are extracted by the tuner from among them, and the monitor and speaker provided in the own device or an externally connected device (recording device) Output to a connected television receiver or the like).
Here, a plurality of broadcast signals such as a terrestrial analog broadcast signal, a terrestrial digital broadcast signal, a BS digital broadcast signal, and an analog CATV signal are input to the television receiver or the like, and a plurality of broadcast signals corresponding to those signal forms are input. Some have a tuner. For example, Patent Literature 1 and Patent Literature 2 show a television receiver including a plurality of different types of tuners.
Thus, in a television receiver or the like having a plurality of tuners, a signal line of a broadcast signal (a signal line connected to a broadcast signal receiving antenna or a CATV modem) to a plurality of signal input terminals to which a broadcast signal is input. There may be many connection patterns of signal lines and the like to be connected.

FIG. 4 is a diagram illustrating an example of a connection pattern of signal lines of broadcast signals to a plurality of tuners in a conventional television receiver or the like.
The television receiver shown in FIG. 4 represents two analog UV tuners 1a and 1b (in the figure, “AN TUNER”) that extract a channel signal from an analog broadcast signal (such as an analog terrestrial broadcast signal or an analog CATV broadcast signal). ) And one digital tuner 1c (denoted as “DG TUNER” in the figure) that extracts a channel signal from a digital broadcast signal (digital terrestrial broadcast signal, digital satellite broadcast signal, etc.). Then, by connecting a signal line of a broadcast signal to each of the three signal input terminals in1 to in3, the broadcast signal is input to each of the tuners 1a to 1c corresponding to the signal input terminals in1 to in3. Also, one analog UV tuner 1a has a function of branching a broadcast signal input to the analog UV tuner 1a and outputting it to a signal output terminal out (RF output terminal).

In addition, the signal line connection pattern of the broadcast signal shown in FIG. 4A is such that the signal input terminal in1 of one analog UV tuner 1a has a signal line of a terrestrial analog broadcast signal and the digital tuner 1c has a satellite digital broadcast signal. In this example, the signal lines are connected to each other, and the signal output terminal out of the one analog UV tuner 1a is connected to the signal input terminal in2 of the other analog UV tuner 1b by a relay signal line.
With this connection pattern, broadcast programs based on terrestrial analog broadcast signals and broadcast programs based on satellite digital broadcast signals can be viewed (tuned), and two broadcast programs on different channels in terrestrial analog broadcast signals can be viewed. Can be displayed on a multi-screen on a video display unit (not shown).
On the other hand, the connection pattern shown in FIG. 4B is a signal line of a terrestrial broadcast signal in which both the terrestrial analog broadcast signal and the terrestrial digital broadcast signal are superimposed on the signal input terminal in1 of one analog UV tuner 1a. The signal line from the terrestrial broadcast receiving antenna) is connected to the other analog UV tuner 1b, and the signal output terminal out of the one analog UV tuner 1a is connected to the digital tuner 1c. This is an example in which the signal input terminal in3 is connected by a relay signal line.
By using such a connection pattern, it is possible to view (tune to) broadcast programs based on terrestrial analog broadcast signals, CATV analog broadcast signals, and satellite digital broadcast signals.
In addition to the above, in the connection pattern of FIG. 4 (a), instead of connecting the signal input terminal in2 to the signal output terminal out, a pattern connecting the signal line of the CATV analog broadcast signal and the signal line of the broadcast signal are distributed. Various connection patterns are conceivable, such as branching by a machine and connecting to the input terminals of multiple tuners.
Japanese Patent Laid-Open No. 10-276373 Japanese Patent No. 2715469

However, it is difficult for a user who is not familiar with the apparatus to select an appropriate connection pattern according to the type of one or a plurality of broadcast signals from various connection patterns and to connect the signal lines correctly. There was a problem of being troublesome. In particular, branching one broadcast signal and inputting it to a plurality of tuners (branching and connecting signal lines) has a problem that it is more difficult for the user to understand.
In addition, depending on the connection state of the signal lines, there may be a problem that the functions of the device cannot be utilized to the maximum.
For example, in the connection pattern shown in FIG. 4A, when the signal output terminal out of one analog UV tuner 1a is not connected to the signal input terminal in3 of the other analog UV tuner 1b, a program of terrestrial analog broadcasting There is no hindrance to watching and the connection is not wrong. However, in such a connection state, it is not possible to utilize the function of displaying programs of two different channels in terrestrial analog broadcasting on multiple screens.
Accordingly, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide one or more signal lines for a plurality of broadcast signals when a plurality of tuners to which broadcast signals are input are provided. An object of the present invention is to provide a broadcast signal processing apparatus capable of facilitating the connection to the end and setting a signal connection state that can make maximum use of the functions of the apparatus, and a television receiver including the same.

In order to achieve the above object, the present invention provides a plurality of signals to which each of the broadcast signals is input when a plurality of tuners to which broadcast signals are input, such as tuners for analog broadcast signals and tuners for digital broadcast signals, are provided. Signal path arbitrary setting means (so-called matrix switcher) capable of arbitrarily setting connection states of signal transmission paths from the input end to the plurality of tuners, control means (signal path control means) for controlling the signal path , Signal type detection means for detecting the type of the broadcast signal inputted from each signal input terminal, and the signal path control means is based on the detection result by the signal type detection means by the signal path arbitrary setting means. signal controls the connection state of the transmission path formed by the broadcast signal processing apparatus, or is constituted as a television receiver comprising it
Thus, even if one or more signal lines of a broadcast signal are connected to any of a plurality of signal input terminals, the signal path arbitrary setting means can input the broadcast signal to a plurality of tuners in an arbitrary pattern. (One broadcast signal can be branched and input to a plurality of tuners). Therefore, when connecting a signal line of a broadcast signal to a plurality of signal input terminals, it is not necessary to consider which of the many possible connection patterns is an appropriate connection pattern. Signal line connection work can be facilitated. Furthermore, the type of the broadcast signal input from each of the plurality of signal input terminals is detected, and the connection state of the signal transmission path by the signal path arbitrary setting means is controlled (automatic control) based on the detection result. Therefore, it is possible to automatically set the connection state (input state) of the broadcast signal to each tuner so that the functions of the apparatus can be utilized to the maximum according to the type of the broadcast signal input.
Further, since it is possible to branch a broadcast signal inputted to one signal input terminal by the signal path arbitrary setting means and transmit it to a plurality of tuners, the tuner is provided more than the number of signal input terminals. It is also applicable when As a result, the number of signal input terminals can be minimized, so that the terminal (connector) configuration on the exterior of the apparatus is simple and suitable.

Further, by controlling the signal path arbitrary setting means, the connection state of the signal transmission paths from the plurality of signal input terminals to the plurality of tuners is sequentially switched, and the connection of the signal transmission paths switched in this way In each state, it is conceivable to detect the type of the broadcast signal based on the signal after channel signal extraction processing has been performed on the broadcast signal by the tuner.
For example, based on whether or not a video signal exists in the signal after channel selection processing has been performed on the broadcast signal by the tuner, or whether or not the format of the signal conforms to a predetermined format. It is conceivable to detect the type of the broadcast signal.
As a result, channel selection processing by the tuner (that is, processing for selecting (extracting) any channel from a plurality of channels (frequency bands) included in the broadcast signal) or the signal of the channel selected by each tuner. On the other hand, the type of broadcast signal can be detected by making use of various signal processing such as detection processing normally performed and format determination processing of a digital broadcast signal, and the apparatus configuration is simplified.

According to the present invention, when a plurality of tuners to which a broadcast signal is input are provided, a signal that can arbitrarily set connection states of signal transmission paths from a plurality of signal input ends to which a broadcast signal is input to a plurality of tuners. Since the route arbitrary setting means is provided and controlled, the operation of connecting the signal lines of one or a plurality of broadcast signals to the plurality of signal input terminals can be facilitated.
Furthermore, since detecting the type of broadcast signal inputted from a plurality of said signal input terminal, respectively, for automatically controlling the connection state of the signal transmission path by the signal path any setting means based on the detection result, the signal path any Broadcasting signal connection status (input status) to each tuner so that the work required for the user to input information necessary for control of the setting means (broadcast signal type information) can be saved and the functions of the device can be utilized to the maximum. ) Can be set.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that the present invention can be understood. The following embodiment is an example embodying the present invention, and does not limit the technical scope of the present invention.
FIG. 1 is a block diagram showing a schematic configuration of the television receiver X according to the embodiment of the present invention. FIG. 2 is a signal transmission path setting process from each signal input terminal to each tuner in the television receiver X. FIG. 3 is a diagram showing an example of a wideband switcher setting table used for setting a signal transmission path from each signal input terminal to each tuner according to the type of broadcast signal in the television receiver X. FIG. FIG. 10 is a diagram illustrating an example of connection patterns of signal lines of broadcast signals to a plurality of tuners in a conventional television receiver.

First, the configuration of the television receiver X according to the embodiment of the present invention will be described with reference to the block diagram of FIG.
The television receiver X is a television receiver capable of switching and displaying a video screen based on a video signal selected (extracted) by each of a plurality of tuners.
As shown in FIG. 1, the television receiver X includes three tuners 1a, 1b, and 1c to which broadcast signals are input, and channel signal processing circuits 2a, 2b, and 2c (corresponding to the tuners 1a, 1b, and 1c). In the figure, it is represented as “Ch processing circuit”), video switching circuit 3, two video processing circuits 4a and 4b, screen composition switching circuit 5, broadband switcher 6, and remote control interface (I / F) circuit 7. And a control circuit 8, a monitor screen 21, a sound switching circuit 10, a sound processing circuit 11, an amplifier 22, and a speaker 23.

Of the three tuners, two tuners 1a and 1b (represented as “AN TUNER” in the figure) receive the broadcast signal when an analog broadcast signal such as an analog terrestrial broadcast signal or an analog CATV broadcast signal is input. Are analog UV tuners 1a and 1b (analog broadcast signal tuners) that select (extract) and output a signal of one channel.
The remaining tuner 1c (represented as “DG TUNER” in the figure) receives a signal of one channel from the broadcast signal when a digital broadcast signal such as a digital terrestrial broadcast signal or a digital satellite broadcast signal is input. Is a digital tuner 1c (a tuner for a digital broadcast signal) that selects (extracts) and outputs it.
Each tuner 1a, 1b, 1c inputs a broadcast signal, performs channel selection processing for extracting (selecting) a channel signal designated by the control circuit 8 from the input signal, and processing the processed signal in a subsequent stage. It transmits to each channel signal processing circuit 2a, 2b, 2c.
The channel signal processing circuits 2a, 2b, and 2c correspond to the types of the tuners 1a, 1b, and 1c (for analog broadcast signals or digital broadcast signals) in the preceding stage, and the tuners 1a, 1b , 1c extracts a video signal and an audio signal from one channel signal (channel signal) transmitted from 1c, and transmits the video signal and the audio signal to the video switching circuit 3 and the audio switching circuit 10, respectively. It is.
Here, the channel signal processing circuits 2a and 2b corresponding to the analog broadcast signal also perform video signal processing such as separation of a horizontal synchronizing signal and a vertical synchronizing signal from the analog video signal extracted by a predetermined detection process.
In addition, the channel signal processing circuit 2c corresponding to the digital broadcast signal performs well-known digital demodulation processing and decoding processing such as OFDM, VSB, and QAM on the IF signal of the channel selected (extracted) from the broadcast signal by the digital tuner 1c. A video signal that can be viewed by generating a TS (Transport Stream) signal by error correction processing, etc., demultiplexing the TS signal into a stream such as video, audio, and data broadcasting, and then decoding the separated signal , Convert to audio signal etc.

Further, whether or not the channel signal processing circuits 2a and 2b corresponding to the analog UV tuners 1a and 1b for analog broadcast signals have detected synchronization signals from the signals after the channel selection processing by the analog UV tuners 1a and 1b. And a determination result (hereinafter referred to as a synchronization signal determination result) is transmitted to the control circuit 8.
Further, the channel signal processing circuit 2c corresponding to the digital tuner 1c for digital broadcast signals stores one or a plurality of signal formats predetermined as digital broadcast signal standards, and the format of the TS signal is , A determination circuit (not shown) for conforming (matching) with any of the predetermined signal formats, and transmitting the determination result (hereinafter referred to as signal format determination result) to the control circuit 8. .
The video switching circuit 3 inputs video signals from each of the channel signal processing circuits 2a, 2b, 2c, and outputs any two of these video signals in accordance with instructions from the control circuit 8. Is.
Each of the video processing circuits 4a and 4b performs various signal processing on each video signal output from the video switching circuit 3. For example, a predetermined image quality improvement process, a process of reducing the video after the image quality improvement process (compressing the time axis), a phase adjustment process of arranging the reduced video signal in the left half of the screen or the right half of the screen, etc. The processed video signal is output to the screen composition switching circuit 5.
The screen composition switching circuit 5 displays one video screen on the monitor screen 21 by switching one of the video signals from each of the video processing circuits 4a and 4b and outputting it to the monitor screen 21. This is for switching whether two video screens are arranged side by side and are simultaneously displayed (screen synthesis).
Further, the screen composition switching circuit 5 has a function of superimposing insertion information input from the control circuit 8 on an output video signal.

The monitor screen 21 is a display means including, for example, a liquid crystal panel forming a so-called wide screen and its peripheral devices, and displays a video signal output from the screen composition switching circuit 5.
The remote control interface circuit 7 acquires operation input information for the remote control from the remote control for operating the television receiver X by wireless transmission such as infrared transmission, and outputs the operation input information to the control circuit 8. Is.
The audio switching circuit 10 receives audio signals from the tuners 1 a and 1 b and the audio signal from the external input unit 2, and receives any one of the audio signals from the control circuit 8. Is output according to the instructions.
The audio processing circuit 11 performs various signal processing on the audio signal output from the audio switching circuit 10 in accordance with an instruction from the control circuit 8. For example, equalization processing or surround processing according to the characteristics of the speaker 23 is performed.
The amplifier 22 performs a process of amplifying or attenuating the audio signal processed by the audio processing circuit 11 in accordance with an instruction from the control circuit 8 and outputs the amplified signal to the amplifier 22.
Of the television receiver X, the rest of the configuration excluding the monitor screen 21 and the audio-related components 10, 11, 22, 23 displays a video screen on the monitor screen 21 (multi-screen display means). This is a part that functions as a multi-screen control device.

The broadband switcher 6 is a so-called matrix switcher (signal that can arbitrarily set connection states of signal transmission paths from two signal input terminals i1 and i2 to which broadcast signals are respectively input to the three tuners 1a, 1b, and 1c. An example of route arbitrary setting means). Thus, in the television receiver X, the tuners 1a, 1b, and 1c are provided more than the number of the signal input terminals i1 and i2. The broadband switcher 6 has a broadband specification so that broadcast signals of various frequency bands can be transmitted.
The control circuit 8 includes an MPU 8a which is an arithmetic means, a ROM 8b (EPROM) which is a storage means in which a control program executed by the MPU 8a is stored in advance, an EEPROM 8c which stores setting information written by processing executed by the MPU 8a, etc. And the entire television receiver X is controlled.
Here, the control circuit 8 corresponds to operation input information (channel selection key operation input and voice volume up key or down key operation input) inputted through the remote control (not shown) and the remote control interface circuit 7. The functions provided in a normal television receiver, such as designating a channel to be selected for the tuners 1a and 1b and outputting an output volume adjustment command to the amplifier 22 It has a control function for realizing.
Further, the control circuit 8 determines whether or not to reduce the video signal for each of the video processing circuits 4a and 4b, and arranges (phase adjustment) in either the left half or the right half of the screen when performing the reduction. ) To output one of the video signals from the video processing circuits 4a and 4b on the monitor screen 21 or the monitor screen. 21 outputs a control signal indicating whether to display a multi-screen (two screens). Further, a control signal for selecting which broadcast channel is to be extracted (channel selection) is output to each of the tuners 1a and 1b, and the tuners 1a and 1b and the external channels are output to the video switching circuit 3. A switching signal for selecting which two video signals are selected from the video signals input from each of the input units 2 and outputting them to each of the video processing circuits 4a and 4b is output.

The control circuit 8 controls the connection state of the signal transmission path of the broadband switcher 6 by outputting a predetermined control signal to the broadband switcher 6 (an example of signal path control means).
Hereinafter, the processing procedure of the broadband switcher 6 control performed by the control circuit 8 executing a predetermined control program will be described with reference to the flowchart of FIG. S1, S2,... Represent identification codes of processing procedures (steps). 2 is performed at a predetermined timing such as when the monitor screen 21 is turned on or when it is detected that a predetermined switcher control start operation is performed through the remote controller and the remote controller interface circuit 7. Executed in
First, the control circuit 8 is configured so that the connection state of the signal transmission path from the two signal input terminals i1 and i2 to the three tuners 1a, 1b, and 1c is one of a plurality of predetermined different connection states. The broadband switcher 6 (signal path arbitrary setting means) is controlled so as to be in one connection state, and the connection state is sequentially switched (an example of S1, signal path sequential switching control means). Then, every time the switching is performed, the processes of steps S2 and S3 described later are executed. The setting (control) of the signal transmission path of the broadband switcher 6 in step S1 is a temporary setting for the purpose of detecting the type of broadcast signal before performing the main setting (S5) described later.
For example, in the configuration of this embodiment, first, an input signal to the signal input terminal i1 is transmitted to the analog UV tuner 1a, and an input signal to the signal input terminal i2 is transmitted to the digital tuner 1c. Next, a second connection state in which an input signal to the signal input terminal i1 is transmitted to the digital tuner 1c and an input signal to the signal input terminal i2 is transmitted to the digital tuner 1c. To do. Information regarding such a connection state is stored in advance in the EEPROM 8c or the like.

Next, the control circuit 8 controls the tuners 1a and 1c to select a predetermined channel in each connection state of the signal transmission path in the broadband switcher 6 that is sequentially switched (S2). Details thereof will be described later.
Further, the control circuit 8 transmits signals from the channel signal processing circuits 2a and 2c corresponding to the tuners 1a and 1c to which signals are inputted in the connection states of the signal transmission paths in the broadband switcher 6 that are sequentially switched. The type of each broadcast signal is detected based on the synchronization signal discrimination result and the signal format discrimination result.
That is, as described above, the synchronization signal determination result is a result of determining whether or not the synchronization signal is detected from the signal after the channel selection processing by the analog UV tuner 1a by the channel signal processing circuit 2a. However, if the synchronization signal is detected, it means that a video signal is present in the signal after the channel selection process. If there is a video signal, the control circuit 8 It is determined (detected) that the broadcast signal input to the UV tuner 1a is an analog broadcast signal.
In addition, the signal format determination result is a predetermined signal in which the format of the TS signal based on the signal after the channel selection processing by the digital tuner 1c is determined in advance by the channel signal processing circuit 2c as the standard of the digital broadcast signal. As a result of the determination as to whether or not it conforms to the format, if the signal conforms to a predetermined signal format, the control circuit 8 indicates that the broadcast signal input to the corresponding digital tuner 1c is digital broadcast. It is determined (detected) that it is a signal. The determination result is stored in the EEPROM 8c.

The control circuit 8 sequentially performs the discrimination (detection) processing as described above for each of the first and second connection states described above, so that the type of broadcast signal input to each of the signal input terminals i1 and i2 It is determined (detected) whether it is an analog broadcast signal or a digital broadcast signal. If it is determined that the signal is neither an analog broadcast signal nor a digital broadcast signal, it is determined that no broadcast signal is input to the signal input terminal.
The process of step S3 is performed in each of the states in which the connection state of the signal transmission path from the signal input terminals i1, i2 to the plurality of tuners 1a, 1b, 1c is sequentially switched by the process of step S1. This is a process of detecting the type of broadcast signal based on the signal after the channel selection process is performed on the broadcast signal by 1a, 1b, 1c, and the control circuit 8 and the channel signal processing circuits 2a, 2b that perform this process. , 2c are examples of signal type detection means.

By the way, when the type of broadcast signal is detected on the basis of the synchronization signal determination result or the signal format determination result, naturally, in step S2, the tuner 1a, 1c selects the channel used in each broadcast signal. There is a need.
Various methods of setting the selected channel by the tuners 1a and 1c in step S2 can be considered.
For example, when there is a channel that is commonly used in any broadcast signal, the channel used is stored in advance in the ROM 8b of the control circuit 8, and the control circuit 8 is connected to each tuner 1a, Let 1c select the channel.
Alternatively, for each type of broadcast signal, a unique channel (hereinafter referred to as a unique channel) that is used in that type of broadcast signal but is not used in other types of broadcast signals is stored in the ROM 8b of the control circuit 8 or the like. The control circuit 8 causes the tuners 1a and 1c to sequentially select the unique channel for each connection state of the signal transmission path, and the type of broadcast signal described above each time the unique channel is selected. It is also possible to perform the detection process. According to this, in addition to detecting the type of analog broadcast signal or digital broadcast signal, for example, identification (detection) of analog terrestrial broadcast signal or analog CATV broadcast signal, or digital terrestrial broadcast signal or digital CATV broadcast signal. It is also possible to identify these. It should be noted that it is possible to determine which type of digital broadcast signal is included in the digital broadcast signal depending on which of the predetermined signal formats the TS signal format is adapted to.

As described above, the control circuit 8 completes the determination of the type of broadcast signal (including the determination that the broadcast signal is not made) for all the input signals to the signal input terminals i1 and i2. The above-described steps S1 to S3 are repeated while sequentially switching the connection state of the signal transmission path in the broadband switcher 6.
Next, the control circuit 8 sets the signal transmission path in the broadband switcher 6 based on the determination result of the type of broadcast signal at the signal input terminals i1 and i2, and then ends the processing. .
FIG. 3 shows a wideband switcher setting table (signal transmission path setting information) used for setting signal transmission paths from the signal input terminals i1 and i2 to the tuners 1a to 1c according to the type of broadcast signal in step S5. It is a figure showing an example. Information of this table is stored in advance in the EEPROM 8c of the control circuit 8 or the like. In FIG. 3, signal output terminals o1 to o3 represent connection terminals (signal output terminals) to the three tuners 1a, 1b, and 1c in the broadband switcher 6, and “i1”, “i2” associated with them. "Indicates that the signal output terminals o1 to o3 are connected to the signal input terminals i1 and i2 by the broadband switcher 6, and"-"indicates that no signal input terminal is connected. .
By controlling the broadband switcher 6 according to a table as shown in FIG. 3, it is possible to set a signal connection state that can make maximum use of the multi-screen (two-screen) display function of the television receiver X.
The control circuit 8 that executes the process of step S5 is based on the detection result of the broadcast signal type detection process (an example of the process of the signal type detection means) in steps S1 to S4. It is an example of a signal path control means for controlling the connection state of the signal transmission path by the path arbitrary setting means.
In this embodiment, the three tuners 1a, 1b, 1c to which broadcast signals are inputted, channel signal processing circuits 2a, 2b, 2c (signal type detection means), and the broadband switcher 6 (signal path arbitrary setting means). The control circuit 8 (signal path control means) constitutes an example of a broadcast signal processing apparatus according to an embodiment of the present invention.

In the television receiver X according to the embodiment described above, the signal after the channel selection processing is performed on the broadcast signal by the tuners 1a to 1c, based on the type of the broadcast signal input to each of the signal input terminals i1 and i2. For example, a broadcast signal is transmitted between the signal input terminals i1 and i2 and the broadband switcher 6 or between the broadband switcher 6 and each of the tuners 1a to 1c. It is also conceivable to determine the type based on itself. However, in that case, it is necessary to separately provide a circuit similar to the channel signal processing circuits 2a to 2c, etc., and the signal processing circuit normally provided in the television receiver cannot be effectively used, and the number of components of the apparatus increases. become.
Further, as a control method of the broadband switcher 6 (signal path arbitrary setting means), in addition to the above-described embodiment, for example, any kind of broadcast signal signal line is connected to any signal input terminal i1, i2. An input screen for such information (hereinafter referred to as broadcast signal type input information) is displayed on the monitor screen 21, and the broadcast signal type input information is input through the remote control and the remote control interface circuit 7 in accordance with a user operation input, It is conceivable that the control circuit 8 controls the broadband switcher 6 according to the result of applying the input information to the broadband switcher setting table (FIG. 3).

  The present invention can be used for a channel selection device provided in a television receiver or the like.

1 is a block diagram illustrating a schematic configuration of a television receiver X according to an embodiment of the present invention. 6 is a flowchart illustrating a procedure of a signal transmission path setting process from each signal input terminal to each tuner in the television receiver X. The figure showing an example of the wideband switcher setting table used for the setting of the signal transmission path | route from each signal input terminal according to the kind of broadcast signal in the television receiver X to each tuner. The figure showing an example of the connection pattern of the signal line of the broadcast signal to the some tuner in the conventional television receiver.

Explanation of symbols

X ... Television receiver 1a, 1b ... Analog UV tuner 1c ... Digital tuner 2a, 2b, 2c ... Channel signal processing circuit 3 ... Video switching circuit 4a, 4b ... Video processing circuit 5 ... Screen composition switching circuit 6 ... Broadband switcher ( Signal path arbitrary setting means)
7: Remote control interface circuit 8: Control circuit (signal path control means)
DESCRIPTION OF SYMBOLS 10 ... Audio | voice switching circuit 11 ... Audio | voice processing circuit 21 ... Monitor screen i1, i2 ... Signal input terminal S1, S2, ... Step (processing procedure)

Claims (7)

A broadcast signal processing apparatus having a plurality of tuners to which broadcast signals are input,
Signal path arbitrary setting means capable of arbitrarily setting connection states of signal transmission paths from a plurality of signal input terminals to which the broadcast signals are respectively input to the plurality of tuners;
Signal path control means for controlling the connection state of the signal transmission path by the signal path arbitrary setting means;
A signal type detection means for detecting the type of the broadcast signal input from each of the plurality of signal input terminals;
Equipped with,
The broadcast signal processing apparatus, wherein the signal path control means controls the connection state of the signal transmission path by the signal path arbitrary setting means based on the detection result by the signal type detection means .   The broadcast signal processing apparatus according to claim 1, wherein more tuners are provided than the number of signal input terminals.   The broadcast signal processing apparatus according to claim 1, wherein the plurality of tuners include an analog broadcast signal tuner and a digital broadcast signal tuner. Comprising signal path sequential switching control means for sequentially switching connection states of signal transmission paths from a plurality of signal input terminals to a plurality of tuners by controlling the signal path arbitrary setting means;
The signal type detection means is based on a signal after channel selection processing is performed on the broadcast signal by the tuner in each connection state of the signal transmission path sequentially switched by the signal path sequential switching control means. The broadcast signal processing apparatus according to claim 1, wherein the broadcast signal processing apparatus detects the type of broadcast signal. The signal type detection means, to claim 4 comprising detecting the type of the broadcast signal based on whether the video signal to the signal after the channel selection process is performed for the broadcast signal by the tuner is present The broadcast signal processing apparatus described. The signal type detection means detects the type of the broadcast signal based on whether or not the format of the signal after channel selection processing is performed on the broadcast signal by the tuner conforms to a predetermined format. The broadcast signal processing apparatus according to claim 4 . Television receiver characterized by comprising comprises a broadcast signal processing apparatus according to any one of claims 1-6.

Images