JP2007282077A - Broadcast receiver and broadcast receiving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver and a broadcast receiving method capable of automatically executing optimum video processing and audio processing having good harmony between image quality and sound quality. <P>SOLUTION: The genre of a received broadcast program is identified on the basis of EPG information. In order to obtain reception state with display quality and sound quality optimum to the identified genre, an image quality parameter and a sound quality parameter to be applied to the image and sound processing are acquired as a combination of both the parameters from a web site. The video data processing and the sound data processing for displaying video images and outputting sounds are executed while applying the image quality parameter and the sound quality parameter which are acquired. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a broadcast receiving apparatus and a broadcast receiving method in which, when a broadcast program is received, adjustment for viewing with the image quality and sound quality suitable for the program is automatically performed.

In recent years, for example, in a broadcast receiving apparatus such as a digital television receiver, there is a tendency to select more than 100 programs. The image quality or the sound quality for viewing the program in an optimal state depending on the program or the genre to which the program corresponds is not uniform. For this reason, in order to always watch in a good state, it is necessary to adjust the image quality or the sound quality according to the program or the genre to which the program corresponds.

In order to respond to such adjustments, recent digital television receivers have an image quality or sound quality adjustment function such as a theater mode and a music mode, and the viewer can set according to his / her preference. . Furthermore, parameters such as brightness, contrast, and color temperature can be adjusted. However, it is too complicated for the viewing user to make such adjustments whenever necessary.
Various proposals for recognizing such a situation as a technical problem and solving the problem have been disclosed.

An object of the present invention is to provide an image processing apparatus that cooperates with an EPG, determines a program type to be processed, and automatically selects an optimal video processing method according to the program type.
The EPG received by the PG acquisition unit is held in the EPG memory, the type of video is determined from the channel set in the tuner, the broadcast time set in the timer, and the EPG stored in the EPG memory, and the determined video The processing method is determined based on the type. A technique of a video processing apparatus is proposed in which video is processed by a video processing unit based on the determined processing method. (See Patent Document 1).

There is also a proposal for automatically adjusting frequency characteristics in signal processing according to the genre of a program when listening to audio from a television receiver with an audio device. In this proposal, the signal processing unit receives the AV signal and the program genre information A obtained from the TV broadcast receiving unit, receives the genre information B from the web or the like, and sends the AV signal and the program genre information A or B to the recording medium. Record. The recording media unit is, for example, a hard disk or a DVD-RAM.
The AV signal and the program genre information A or B are recorded and reproduced on a recording medium such as a DVD-R, and at this time, the signal output from the signal processing unit from the TV broadcast receiving unit, or recorded. Among the AV signals reproduced from the media section, the audio signal is switched from the equalizer corresponding to the program genre information based on the control of the microcomputer, amplified and reproduced from the speaker.

Referring to the comparison table, the audio equalizer and the equalizer of the amplifying unit are automatically switched according to the program genre information, but the microcomputer searches the EPG from the television broadcast or the web, etc.
It is disclosed that the “program genre” information is taken out and the audio equalizer and the equalizer of the amplification unit are automatically switched (see Patent Document 2).

In addition, other detailed disclosure has already been made about the fact that various information including genre information is held in the EPG. For example, the EPG has a program title,
Program information such as performers, genres, and program summaries is stored as internal data.
Therefore, by preparing an appropriate user interface, it is possible to search for and display a broadcast-scheduled program by designating a genre or a performer by an operation on the EPG. Similarly, when the receiver has a recording / playback device with a built-in storage such as a set-top box (STB) or HDD, a recorded program recorded on the STB or the recording / playback device with a genre or performer specified. There is a patent document including disclosure that can be searched and displayed (
(See Patent Document 3).
JP 2001-251567 (paragraphs 0002 to 0007, paragraph 0027, FIG. 8) JP 2005-318225 A (paragraph 0007, paragraph 0015 to paragraph 0018, FIG. 1) JP 2001-268467 A (paragraph 0003)

However, in the proposal described in Patent Document 1, it is necessary to adjust the sound quality by trial and error using the sound quality setting function when it is desired to adjust the sound quality setting in addition to the image quality setting as in a movie or a music program. In general, it is difficult for a general user to perform an optimal setting in which image quality and sound quality are harmonized.
In this regard, it is not expected that the image quality and the sound quality are harmonized even if the technology relating to the sound adjustment described in Patent Document 2 is simply used as it is.

In addition, it is understood that a wide variety of program information can be acquired from the EPG in the disclosure described in Patent Document 3, but based on this disclosure, an optimal setting in which image quality and sound quality are harmonized immediately. It is not possible to reach the technology of doing.
The present invention has been made in view of the above situation, and can automatically perform optimum video processing and audio processing in which image quality and sound quality are harmonized when a broadcast program is received and viewed. It is an object to provide a broadcast receiving apparatus and a broadcast receiving method.

In order to solve the above-described problems, the present application proposes the following techniques.
(1) Genre identification means for identifying a genre related to a received broadcast program based on EPG information, and for obtaining a reception state with an optimal display image quality and sound quality for the genre identified by the genre identification means. A parameter set acquisition means for acquiring image quality parameters and sound quality parameters applied to the processing as a combination of both parameters, and applying the image quality parameters and sound quality parameters acquired by the parameter set acquisition means to display video and audio A broadcast receiving apparatus comprising: video processing means and audio processing means for performing output.

In the broadcast receiving apparatus of (1) above, the genre identifying means identifies the genre related to the received broadcast program based on the EPG information, and the image is obtained in order to obtain the reception state with the optimum display image quality and sound quality for the identified genre. The image quality parameter and the sound quality parameter applied to the audio processing are acquired by the parameter set acquisition means as a combination of both parameters. Then, by applying the acquired image quality parameter and sound quality parameter, the video processing unit and the audio processing unit display video and output audio. Since the image quality parameter and sound quality parameter are automatically set as a combination of both parameters,
Optimal video processing and audio processing in which the image quality and the sound quality are harmonized are performed.

(2) The parameter set obtaining means obtains a combination of the corresponding image quality parameter and sound quality parameter from table data representing a correspondence relationship between the genre related to the received broadcast program and the combination of the image quality parameter and the sound quality parameter suitable for the genre. The broadcast receiving apparatus according to (1), wherein the broadcast receiving apparatus is configured to select.
In the broadcast receiving apparatus of (2) above, particularly in the broadcast receiving apparatus of (1), the parameter set acquisition means is a correspondence relationship between a genre related to a received broadcast program and a combination of image quality parameters and sound quality parameters suitable for the genre. Since the combination of the image quality parameter and the sound quality parameter corresponding to the table data representing is selected, the combination of the image quality parameter and the sound quality parameter optimal for the genre related to the received broadcast program is accurately selected, Optimal video processing and audio processing in which the image quality and the sound quality are harmonized are performed.

(3) The broadcast receiving apparatus according to (1), wherein the parameter set acquisition unit is configured to acquire a corresponding image quality parameter and sound quality parameter from a website.
In the broadcast receiving device of (3) above, the parameter set acquiring means is configured to acquire the corresponding image quality parameter and sound quality parameter from the website, in particular in the broadcast receiving device of (1). A combination of the latest image quality parameters and sound quality parameters taught by prominent experts can be acquired. It is also possible to acquire a combination of image quality parameters and sound quality parameters suitable for the user's preference by selecting a website as an information source.

(4) The broadcast receiving apparatus according to (2), wherein the parameter set acquisition unit is configured to be able to acquire the table data from a website and add it.
In the broadcast receiving apparatus of (4) above, particularly in the broadcast receiving apparatus of (2), table data is additionally stored in a memory or the like from the website, and a combination of the corresponding image quality parameter and sound quality parameter from this table data. For example, a combination of the latest image quality parameters and sound quality parameters taught by prominent experts in the field, for example, is selected accurately, and an optimal combination of image quality and sound quality is achieved. Video processing and audio processing are performed. It is also possible to acquire a combination of image quality parameters and sound quality parameters suitable for the user's preference by selecting a website as an information source.

(5) The broadcast receiving apparatus according to (2), wherein the parameter set acquisition unit is configured to be able to add the table data according to an arbitrary user.
In the broadcast receiver of the above (5), particularly in the broadcast receiver of (2), the parameter set acquisition means is configured to be able to add the table data according to the user's arbitrary. Makes it possible to view broadcast programs with image quality and sound quality adjusted as intended.

(6) A combination of the image quality parameter and the sound quality parameter once acquired by the parameter set acquisition means is stored in association with a name representing the combination, and the combination of the image quality parameter and the sound quality parameter specified by the name is stored in the combination. It further comprises parameter set holding means that can be supplied to the video processing means and the audio processing means (1)
Broadcast receiver.

In the broadcast receiving apparatus of (6), particularly in the broadcast receiving apparatus of (1), the combination of the image quality parameter and the sound quality parameter once acquired by the parameter set acquisition unit is associated with the name representing the combination, for example, a memory And a parameter set holding means that can supply a combination of the image quality parameter and the sound quality parameter specified by the name to the video processing means and the sound processing means. Since a desired combination of image quality parameters and sound quality parameters can be selected according to the name and supplied to the video processing means and the sound processing means, it is possible to add a name that can be easily discriminated by the user in advance. When selecting a combination of image quality and sound quality parameters, the selection It is easy.

(7) Image quality parameters and sound quality to be applied to image and sound processing in order to identify the genre related to the received broadcast program based on the EPG information and obtain the reception state with the optimum display image quality and sound quality for the identified genre. Acquiring parameters from the website as a combination of both parameters, and applying the acquired image quality parameters and sound quality parameters to perform video data processing and audio data processing for video display and audio output A broadcast receiving method characterized.

In the broadcast receiving method of (7) above, the genre related to the received broadcast program is identified based on the EPG information, and image and sound processing is performed in order to obtain the reception state with the optimum display image quality and sound quality for the identified genre. Image data processing and audio for acquiring image quality parameters and sound quality parameters to be applied from a website as a combination of both parameters, and applying the acquired image quality parameters and sound quality parameters to display video and output audio Perform data processing.

For this reason, for example, the latest image quality parameters and sound quality parameter combinations taught by prominent experts in the world are selected from the website accurately, and optimal video processing and audio in which image quality and sound quality are in harmony are selected. Processing is performed. It is also possible to acquire a combination of image quality parameters and sound quality parameters suitable for the user's preference by selecting a website as an information source.

(8) Video data processing for displaying video and outputting audio by applying image quality parameters and sound quality parameters set according to the user's preference instead of image quality parameters and sound quality parameters acquired from the website And (7) a broadcast receiving method characterized by executing audio data processing.
In the broadcast reception method of (8) above, in particular, in the broadcast reception method of (7), in place of the image quality parameter and sound quality parameter acquired from the website, the image quality parameter and sound quality parameter set according to the user's option are applied. Thus, since video data processing and audio data processing for displaying video and outputting audio are executed, so-called high-end users can view broadcast programs with image quality and sound quality by adjustment as intended.

(9) A combination of image quality parameters and sound quality parameters once acquired from a website is stored in association with a name representing the combination, and a combination of image quality parameters and sound quality parameters specified by the names is stored in the video processing means. And a broadcast receiving method according to (7), characterized in that the broadcast receiving method is supplied to a sound processing means.
In the broadcast receiving method of (9) above, in particular, in the broadcast receiving method of (7), the combination of the image quality parameter and the sound quality parameter once acquired from the website is stored in association with the name representing the combination, and the name In order to supply the image processing means and the sound processing means with a combination of the image quality parameter and the sound quality parameter specified by the above, a desired image quality parameter and sound quality can be obtained by giving a name that can be easily discriminated by the user in advance. When selecting a combination of parameters, the selection is easy.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings to be referred to below, for the sake of convenience, the main part that is the subject of the description is exaggerated as appropriate, and other than the main part is appropriately simplified or omitted.
FIG. 1 is a diagram showing a broadcast receiving apparatus as one embodiment of the present invention.
In FIG. 1, a digital television receiver 100 as one embodiment of a broadcast receiving apparatus of the present invention is configured to be operable from a corresponding remote controller 200.

The broadcast wave that has been received and converted by the antenna 110 having a frequency converter is supplied to a tuner unit 120 that includes a plurality of tuner circuits.
The tuner unit 120 extracts a signal having a desired specific frequency from a high-frequency data modulation signal including video data and audio data, and performs demodulation processing, deinterleave processing, error correction processing, and the like to demodulate the extracted signal. To output a transport stream. Further, the tuner unit 120 is configured to receive an error rate or C indicating a reception state obtained in the course of error correction processing.
/ N ratio data is generated.

The transport stream that is the output of the tuner unit 120 is supplied to the descrambling unit 130. The descrambling unit 130 descrambles the transport stream using the key information read by the IC card reading unit 132 from the applied IC card 131.
The descrambling unit 130 further includes a demultiplex processing function, and the descrambled transport stream is converted into MPEG2 (Moving Picture Experts G
roup2) video transport packet, audio transport packet, and P
Separated into SI / SI (Program Specific Information / Service Information).

The separated video transport packet and audio transport packet are supplied to the AV decoder unit 140.
A system controller 150 mainly composed of a microprocessor that controls the entire system of the digital television 100 is provided. The system controller 150 includes:
The error rate or C / N ratio data representing the above-described reception state, and PSI / SI data are also input.

The system controller 150 functions as each means or a part constituting it as an essential constituent element of the present invention by the function of each corresponding functional part.
A plurality of channels are multiplexed in the transport stream, and selecting a desired channel from among these is based on the packet ID in which the desired channel is multiplexed in the transport stream from the aforementioned PSI / SI. This is achieved by reading the data, such as whether or not

In addition, transport stream selection (transponder selection) is performed based on PSI / SI.
SI (service information) includes program information (program contents, program start time, program duration,
Genre information).
The AV decoder unit 140 includes a video decoder that decodes video transport packets and an audio decoder that decodes audio transport packets.

This video decoder decodes the input variable length code to obtain a quantization coefficient and a motion vector, and performs inverse DCT transform, motion compensation control based on the motion vector, and the like.
The audio decoder decodes the input encoded signal to generate audio data.
The output of the above video decoder of the AV decoder unit 140 is supplied to the video processing unit 142 via the adder 141, while the output of the above audio decoder is supplied to the audio processing unit 143.

The video processing unit 142 receives the video data from the AV decoder unit 140, performs a process related to image quality adjustment and the like, performs D / A conversion, and converts it to, for example, a composite video signal. On the other hand, the audio processing unit 143 receives the audio data from the AV decoder unit 140 and performs a D / A conversion after performing processing related to the adjustment of the sound quality, for example, an analog signal of the right (R) sound and a left (L
) Generate a sound analog signal.

As will be described later, the video processing unit 142 receives image quality parameters supplied from the system controller 150 and performs video (image) processing corresponding to the image quality parameters to perform image quality adjustment. The audio processing unit 143 performs system adjustment. When the sound quality parameter is supplied from the controller 150, the sound quality is adjusted by performing sound processing according to the sound quality parameter.
The output of the video processing unit 142 is supplied to the display device 160 via the video output unit 144 and the video is displayed on the screen. The output of the audio processing unit 143 is supplied to the speaker 161 via the audio output unit 145 and the audio is received. Is output.

An OSD unit 151 that operates under the control of the system controller 150 is provided, generates video data based on character information and color information instructed to be output from the system controller 150, and outputs the video data to the adder 141. The adder 141 performs processing for incorporating the video data into the received video data output from the AV decoder 140.
A remote control signal receiving unit 152 for receiving a remote control signal by infrared light from the remote controller 200 is provided, and the output is decoded by the remote control signal decoding unit 153 and supplied to the system controller 150. It is configured.

A memory 155 is provided so that various data can be exchanged with the system controller 150, and operation buttons and other controls for directly operating the digital television 100 without using the remote controller 200 are provided. The provided operation unit 156 is connected to the system controller 150. In addition to the memory 155, a flash memory 170 having data defining the design of an EPG screen, which will be described later, is also provided in the system controller 1.
50 is connected so that the corresponding data can be supplied at a required timing. The timer 180 supplies time information to the system controller 150.

On the other hand, the system controller 150 is connected to a web interface unit 157 for enabling connection with the web 400 having a normal specification in this type of video equipment. The digital television 100 of this example is connected to the web 400 through the web interface unit 157 and thus to an information source such as the website 450 via the web 400, and can exchange information over a wide range.

As described above, the OSD unit 151 operating under the control of the system controller 150 generates video data based on character information and color information instructed to be output from the system controller 150 and outputs the video data to the adder 141. EPG based on program information by unit 151
(Electronic Program Guide) display, data broadcast display, menu screen display, etc. can be performed.

The flash memory 170 has an EPG screen design (the layout of each column in the table, the color of the frame and ruled lines, the color in the frame, the color of the characters indicating the program name, etc., and the brightness of each part as described above). The data that prescribes is stored. A plurality of EPG screen designs are registered, and the design can be changed in response to a command from the system controller 150.
Further, as will be described later, the flash memory 170 holds an image quality parameter relating to image quality adjustment and a sound quality parameter relating to sound quality adjustment in a table format as a set of both parameters.

As described above, in the configuration described with reference to FIG.
Has a demultiplexing function and separates the descrambled transport stream into MPEG2 video transport packets, audio transport packets, and PSI / SI. SI (Service Information) includes As program information,
The program title, program content, program start time, program duration, genre information, and the like are included, and this SI is interpreted by the system controller 150 to identify the genre related to the received program.

That is, genre identifying means for identifying the genre related to the received broadcast program based on the EPG information is configured by the corresponding functional units of the descrambling unit 130 and the system controller 150.
The system controller 150, through the web interface unit 157, sets the image quality parameter and the sound quality parameter applied to the processing of the image and the sound in order to obtain the reception state with the optimum display image quality and sound quality for the identified genre. The information is acquired from the website 450 as an information source as a combination and stored in the flash memory 170.

That is, the parameter set acquisition unit is configured by the corresponding functional units of the web interface unit 157 and the system controller 150. As described above, the image quality parameter and the sound quality parameter acquired by the parameter set acquisition unit are acquired in the form of table data representing the correspondence as a combination of both parameters so as to match the genre related to the received broadcast program, or Are acquired, organized into a table data format, and stored in the flash memory 170.

The image quality parameter and the sound quality parameter acquired by the parameter set acquisition unit are selectively read out from, for example, the table data stored in the flash memory 170 as described above and applied, and the video processing unit 142 and the audio as the video processing unit are applied. In the audio processing unit 143 as processing means, adjustment processing for video display and audio output is executed.
Since the image quality parameter and the sound quality parameter are automatically set as a combination of both parameters, optimal video processing and audio processing in which image quality and sound quality are harmonized are performed.

In this embodiment, in the above configuration, the operation from the remote controller 200,
Alternatively, by giving a manual operation signal to the system controller 150 by an operation from the operation unit 156, the image quality parameter set according to the user's option is used instead of the image quality parameter and the sound quality parameter acquired by the parameter set acquisition unit. In addition, sound quality parameters can be applied to display video and output audio.
Therefore, it is possible for a so-called high-end user to view a broadcast program with image quality and sound quality by adjustment as intended.

FIG. 2 is a diagram showing details of the remote controller 200 in FIG. In this FIG.
In particular, the layout of the operation unit (operation button) of the remote controller 200 is shown. A power button 20 that is labeled “Power” at the vicinity of the top of the top surface 202 of the housing 201.
3, buttons 204, 205 and 206 labeled "A", "B" and "C" are arranged side by side at positions retreated from 3, and are broadcast services for terrestrial digital broadcasting, BS digital broadcasting and CS digital broadcasting. Is a button for selecting.

In this example, a numeric key 207 disposed at a position slightly above the center of the upper surface 202 of the housing 201.
In this case, a broadcasting channel is set in advance for each broadcasting service. In addition, “
“Button” is synonymous with “key”.
For example, channel 101 is set in advance for the “1” button for BS digital broadcasting. Here, when the “B” button 205 is pressed, the tuner for BS digital broadcasting is selected and BS digital broadcasting can be received. Subsequently, when the “1” button is pressed, 101 channels of BS digital broadcasting are selected. In response to this, the digital television receiver 1
On the screen of the 00 display 160, a 101-channel television broadcast image is displayed.

A menu button 208 labeled “MENU” at a substantially central position on the top surface 202 of the housing 201.
And an EPG button 209 labeled “program guide” are arranged apart from each other on the left and right.
Up, down, left, and right shift buttons 210, 211, 212, and 213 with arrows in up, down, left, and right directions are arranged in a predetermined layout as shown in the figure at positions retreated from the menu button 208 and the EPG button 209. An enter button 214 is arranged at the center position.

In addition, the back button 215 labeled “return” to the retracted position, and “My Channel”
My channel button 216 labeled as “” is arranged on the left and right sides.
A volume adjustment button 217 that is divided into upper and lower parts and labeled “volume +, volume−” is arranged at a position retracted to the hand side from the return button 215, and a “mute” button 218 is interposed therebetween, A channel selection button 219 labeled “channel selection +, channel selection−” is arranged on the top and bottom.

Color buttons 220, 221, 221, and 223 labeled “blue”, “red”, “green”, and “yellow” are arranged side by side at a position facing the front end portion of the upper surface 202 of the housing 201.
In this embodiment, when the “channel selection +” portion of the channel selection button 219 is pressed, 102 channels that can be received next to channel 101 are selected, and when the “channel selection +” portion is further pressed, 1 is selected.
Channels of BS digital broadcasting are sequentially selected in ascending order, such as 02 and 103 channels.

On the contrary, the “channel selection” portion of the channel selection button 219 is displayed in the reverse order, 103, 102,
As in 101, BS digital broadcasting channels are sequentially selected in descending order.
The my channel button 216 is a button for selecting a channel from a registered favorite channel registered by the user. The EPG button 209 is a button for displaying a program guide (EPG).

FIG. 3 is a flowchart showing an operation when a channel change operation is performed on the digital television receiver 100 of FIG. The channel is tuned to the changed channel, video and audio are output (step S301), and program information is acquired from the above-described SI (step S302).
The program genre and / or title is discriminated from the program information, and broadcast end time data is further separated (step S303). Image quality and sound quality parameters corresponding to the program genre are acquired from the table stored in the flash memory 170 (step S304). By setting the acquired image quality and sound quality parameters in this order in the video processing unit and audio processing unit, the optimum image quality and sound quality are set for the program genre (steps S305 and S306).
).

The time represented by the broadcast end time data separated in step S303 is compared with the current time (step S307), and the program end time is not reached (step S30).
7: NO), the process proceeds to step S308 for monitoring the presence / absence of a channel change operation. When the program end time is reached (step S307: YES), the process returns to step S302.
The process proceeds to step S308, and if it is determined that there is a channel change operation, the process returns to step S301, and if it is determined that there is no channel change operation, the process returns to step S307.

FIG. 4 is an example of a combination of image quality parameters and sound quality parameters applied to the digital television receiver of FIG. Brightness, contrast, and color density can be adjusted as image quality parameters, and bass enhancement and treble enhancement can be adjusted as sound quality parameters, with 50 being the standard value for each, in the range of 0 to 99. In addition to the example shown in FIG. 4, as image quality parameters, sharpness, hue, color temperature, and the like can be similarly adjusted.

Among the parameters in FIG. 4, the brightness becomes brighter when the numerical value is increased, and becomes darker when the numerical value is decreased. Contrast increases as the value increases and decreases as it decreases. The color density becomes darker when the numerical value is increased and lighter when the value is decreased. In the low tone emphasis, when the numerical value is increased, the bass portion in the middle range is emphasized, and in the high tone emphasis, the high portion in the middle range is emphasized when the value is increased.

In the example of the above parameter, news is a standard setting, sports and music are emphasized in contrast, darker settings, and movies are brightened and contrast is emphasized, darker settings. Furthermore, in the movie, the bass is emphasized, and in the music, the bass and treble are emphasized.
When there are a plurality of image quality and sound quality parameters for the program genre, the initial settings can be made using default parameters, and the image quality and sound quality parameters can be changed later according to the viewer's preference.

FIG. 5 is a flowchart showing the operation when there are a plurality of image quality and sound quality parameters for a program genre. Program information is acquired from the above-described SI relating to the currently tuned program (step S501), and the genre and title of the program are determined (step S5).
02) A list of names indicating the image quality and sound quality parameters for the program genre is displayed (step S503).
Next, the remote controller 2 by the user who has viewed the list display in step S503.
00 is selected (step S504), and step S5 is selected.
A preview screen of the parameter selected in 04 is displayed (step S505).

It is determined whether or not an “OK” operation is performed on the preview display in step S505 (for example, the operation of the OK button 214 on the remote controller 200 when in the preview mode) (step S506), and when the preview display is “OK” (step S506). S506
: YES), each parameter corresponding to the preview display is set in the video processing unit and the audio processing unit, respectively (step S507), and these image quality parameter and sound quality parameter are set as default values (step S508).

If the selection of the image quality / sound quality parameter (step S504) is not operated within a predetermined time, the list of names indicating the image quality / sound quality parameter (step S503) is automatically deleted, and the default image quality / sound quality is selected. A parameter is used.
If “OK” for the preview display is not issued in step S506 (step S506: NO), the process returns to step S504.

FIG. 6 is an example of a list display of the genre of the current program displayed in step S503 in the flowchart of FIG. 5, candidates for image quality and sound quality parameters in the case of a movie, and the like. Movie a is an example of a parameter when a movie tends to be dark, movie b is a movie whose image tends to be bright, and movie c is an example of a parameter when a movie with a lot of music is assumed. Here, movie a, movie b, and movie c are names representing the characteristics of such a movie, and can be set as desired by the user.

In the embodiment of the present invention, the combination of the image quality parameter and the sound quality parameter once obtained from the website is the name representing the combination (in FIG. 6, movie a, movie b, movie c).
Are stored in the flash memory 170 in association with each other, and the combination of the image quality parameter and the sound quality parameter specified by the name is supplied to the video processing unit 142 and the audio processing unit 143 under the control of the system controller 150. By giving a name that can be easily discriminated intuitively, it is easy to select a desired combination of image quality parameters and sound quality parameters.

FIG. 7 is a conceptual diagram showing a state of screen display by preview display when the list-displayed parameters in the example of FIG. 6 are applied. The user can determine the suitability of the applied parameter by such a preview display, and if necessary, manually apply the parameter that meets his / her preference.

FIG. 8 is a block diagram showing an internal configuration of the remote controller 200 in FIGS. 1 and 2. In FIG. 8, for convenience of avoiding confusion with each part in FIG. 2, numbers in the 800s are assigned to each part. The important function of the remote controller 200 is realized by a system controller 810 that is provided in the housing 801 and mainly configured by a microprocessor.

The electronic switch unit corresponding to each operation button (operation key) in FIG. 2 described above is configured to sense an operation by the user and transmit it to the system controller 810 in the housing 801. The electronic switch unit is configured as a so-called key matrix, and sequentially applies voltages to m input ports and n output ports, and discriminates whether or not each operation button is operated by detecting the voltage of the input port. .

A remote control signal for receiving an operation input from the operation unit 820 and transmitting a key code signal (remote control signal) by infrared light corresponding to the received operation to the remote control signal receiving unit 152 on the digital television receiver 100 side. The transmission unit 830 also operates in response to a command from the system controller 810.
On the other hand, the memory 840 is connected so as to be able to exchange data with the system controller 810. The memory 840 stores user setting information and the like.

The system controller 810 constitutes an essential component of the remote controller 200 as an embodiment of the present invention by cooperating with each corresponding functional part and related part, and more specifically as follows. It is.
A registration operation control unit that forms a registration operation signal for performing a predetermined registration operation for the above-described program registration unit on the television receiver 100 side according to a user's operation on the operation unit 820 is a system controller 810 and an operation unit 820. The function is realized by working together.

Further, an EP that forms an EPG display control signal for causing the above-described EPG display unit on the television receiver 100 side to display an EPG according to an operation on the operation unit 820 by the user.
The function of the G display control unit is realized by the cooperation of the system controller 810 and the operation unit 820.
Furthermore, a program selection control unit that forms a program selection control signal for causing the above-described program selection unit on the television receiver 100 side to execute a program selection according to a user's operation on the operation unit 820 is also a system controller. The function is realized by the cooperation of 810 and the operation unit 820.

It is a figure showing the broadcast receiver as one embodiment of this invention. It is a figure showing the detail of the remote controller 200 in FIG. (207 is corrected to 205) 2 is a flowchart illustrating an operation when a channel change operation is performed on the digital television receiver of FIG. 1. It is an example of the combination of the image quality parameter applied to the digital television receiver of FIG. 1, and a sound quality parameter. 3 is a flowchart showing the operation of the digital television receiver when a menu button of the remote controller in FIG. 2 is pressed. FIG. 6 is an example of display of a list of current program genres displayed in processing steps in the flowchart of FIG. 5, candidates for image quality and sound quality parameters in the case of movies, and the like. It is a conceptual diagram showing the mode of the screen display by the preview display at the time of applying the parameter displayed in a list in the example of FIG. It is a block diagram which shows the internal structure of the remote controller in FIG. 1 and FIG. (Correction of signal projection unit to signal transmission unit)

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Digital television receiver (broadcast receiver) 130 ... Descramble part
140 ... AV decoder unit 142 ... Video processing unit 143 ... Audio processing unit 144 ... Video output unit 145 ... Audio output unit 150 ... System controller 151 ... OSD unit 157 ...
Web interface section 160 ... display 161 ... speaker 170 ... flash memory 450 ... website

Claims (9)

Applicable to genre identifying means for identifying a genre related to a received broadcast program based on EPG information, and processing of images and sounds to obtain a reception state with optimum display image quality and sound quality for the genre identified by the genre identifying means Set acquisition means for acquiring the image quality parameter and the sound quality parameter as a combination of both parameters, and applying the image quality parameter and the sound quality parameter acquired by the parameter set acquisition means to display video and output audio A broadcast receiving apparatus comprising: a video processing unit and an audio processing unit. The parameter set acquisition means selects a combination of the corresponding image quality parameter and sound quality parameter from table data representing a correspondence relationship between the genre related to the received broadcast program and the combination of the image quality parameter and the sound quality parameter suitable for the genre. The broadcast receiving apparatus according to claim 1, wherein the broadcast receiving apparatus is configured as follows. The broadcast receiving apparatus according to claim 1, wherein the parameter set acquisition unit is configured to acquire a corresponding image quality parameter and sound quality parameter from a website. The broadcast receiving apparatus according to claim 2, wherein the parameter set acquisition unit is configured to be able to acquire and add the table data from a website. The video processing unit and the audio processing unit apply the image quality parameter and the sound quality parameter set according to the user's option in place of the image quality parameter and the sound quality parameter acquired by the parameter set acquisition unit, and display the video and sound. The broadcast receiving apparatus according to claim 1, wherein the broadcast receiving apparatus is configured to perform the output of The combination of the image quality parameter and the sound quality parameter once acquired by the parameter set acquisition means is stored in association with the name representing the combination, and is selected from among a plurality of combinations of the image quality parameter and the sound quality parameter specified by the name. The broadcast receiving apparatus according to claim 1, further comprising a parameter set holding unit capable of supplying to the video processing unit and the audio processing unit what is selected by a user. The genre related to the received broadcast program is identified based on the EPG information, and both the image quality parameter and the sound quality parameter to be applied to the image and sound processing in order to obtain the reception state with the optimum display image quality and sound quality for the identified genre. And a video data process and an audio data process for performing video display and audio output by applying the acquired image quality parameter and sound quality parameter as a combination of the parameters. Broadcast receiving method. Video data processing and audio data for displaying video and outputting audio by applying image quality parameters and sound quality parameters set according to user's preference instead of image quality parameters and sound quality parameters acquired from the website The broadcast receiving method according to claim 7, wherein the process is executed. The combination of the image quality parameter and the sound quality parameter once acquired from the website is stored in association with the name representing the combination, and the combination of the image quality parameter and the sound quality parameter specified by the name is stored in the video processing means and the audio processing. The broadcast receiving method according to claim 7, wherein the broadcast receiving method is supplied to the means.

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