JP2001128077A - Signal processor and signal processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten the time until next channel-selecting operation becomes possible after channel-selecting operation, and to shorten the time until a user selects a desired in the case of executing selection operation by changing a channel number in order. SOLUTION: A signal processor is provided with a receiving means for receiving program data concerning a program, a designating means for designating a program which has to be received by the receiving means and a control means for controlling the receiving means to receive the program designated by the designation means in accordance with non-execution of the designated operation for a prescribed period from designated operation by the designating means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television signal receiving apparatus, and more particularly to a program selection process.

[0002]

2. Description of the Related Art Currently, a communication satellite (CS; Comm)
IRD (Integrate) as a digital broadcast receiver for receiving digital satellite TV broadcasts using an unication satellite
d Receiver / Decoder) is known. In the IRD, TS (Transport Stream) data in which a video signal, an audio signal, and other data signals are multiplexed is received, each signal is extracted from the TS data, and decoding processing is performed on each signal.

In this type of apparatus, program data relating to a program selected by the operation is extracted from the TS data in accordance with an operation of an operation unit such as a remote controller, the decoding processing is performed, and then the decoding processing is performed. The video related to the performed video signal is output to the display unit. At this time, in order to decode the image data compressed by MPEG2, an intra-frame coded intra picture (hereinafter, I-picture) is required. Also, in the TS of MPEG2, 2 is usually called GOP.
The interval between two I-pictures is 15 frames, and I-pictures are transmitted every 0.5 seconds at most.

[0004]

However, in the conventional digital broadcast receiving apparatus, each time a channel selection operation is performed, the video of the program is displayed on the display unit. Until the decoding processing of the first screen of the image data of the selected program ends, the next channel selection operation has not been accepted. That is, after performing the channel selection operation, the user has to wait for a maximum of 0.5 seconds for the channel selection operation before the next channel selection operation becomes possible.

[0005] In particular, when a channel selection operation is performed using an up-down key or the like, since channels are selected one by one, the user must select a desired channel before the channel is selected.
It took a long time.

The present invention resides in solving the above-mentioned problems.

It is still another object of the present invention to reduce the time after a channel selection operation until the next channel selection operation becomes possible.

It is still another object of the present invention to reduce the time required for a user to select a desired channel when a channel number is sequentially changed and a selection operation is performed.

[0009]

For such a purpose, in the signal processing apparatus of the present invention, a receiving means for receiving program data relating to a program, and a designating means for designating a program to be received by the receiving means And control means for controlling the receiving means so as to receive the program specified by the specifying means in response to the specified operation not being executed for a predetermined period from the last specified operation by the specifying means. Is done.

In the signal processing device of the present invention,
Receiving means for receiving program data relating to a program, specifying means for specifying a program to be received by the receiving means, and control means for controlling the receiving means in accordance with the operation of the specifying means; A first mode for receiving the designated program in response to the designation operation by the designation means, and a designation mode in which the designation operation is not executed for a predetermined period from the designation operation by the immediately preceding designation means. A second mode for receiving a program specified by the means.

The signal processing apparatus according to the present invention further comprises: receiving means for receiving program data relating to a program; designating means for designating a program to be received by the receiving means; Control means for controlling means, the control means comprising: a first mode in which the receiving means receives a program designated by the designation means in response to a designation operation by the designation means; A second mode for receiving the program specified by the specifying means in response to the specified operation not being performed for a predetermined period from the specifying operation by the user; and performing the specified operation for a predetermined period from the specifying operation by the specifying means. And a third mode for receiving the program specified by the specifying means in response to the absence of the program or the specifying operation by the specifying means being performed a predetermined number of times. Ete constructed.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, a first embodiment of the present invention will be described. FIG. 1 is a diagram showing a configuration of a digital TV broadcast receiving apparatus to which the present invention is applied.

In FIG. 1, a signal received by an antenna or a cable (not shown) is input to a tuner section 101. The tuner unit 101 performs processing such as demodulation and error correction on an input signal, and generates digital data in a format called a transport stream. Furthermore, the generated transport stream (TS)
The data is output to the descrambler 102.

When descrambled TS data for viewing restriction is input from the tuner unit 101, the descrambler 102 sends the descramble key information included in the TS data and the IC card control unit 115 The descrambling is performed based on the output key information and output to the demultiplexer 103.

Here, the IC card control unit 115 includes an IC card in which key information for decrypting key information for descrambling included in the contract information of the user and the TS data is stored. When there is key information for decrypting the input key information for descrambling, the key information is output to the descrambler 102.

When descrambled TS data is input from the tuner section 101, the descrambler 102 outputs the TS data to the demultiplexer 103 as it is.

The demultiplexer 103 is selected from time-division multiplexed TS data of video, audio data, EPG data, and the like for a plurality of channels input from the descrambler 102 by operating the operation unit 114. The video data D1 and the audio data D2 related to the program currently being broadcast in the channel that has been broadcast are taken out and output to the video decoder 104 and the audio decoder 105, respectively. Here, the operation unit 114 includes a remote controller and a light receiving unit in addition to the operation unit installed on the main body side.

The demultiplexer 103 extracts the EPG data D3 from the above-mentioned TS data and outputs it to the EPG decoder 106 and the memory 107. Memory 10
7 is the EPG data D3 from the demultiplexer 103
Is stored.

The EPG data is periodically received by the tuner unit 101, and the memory 107 always stores the latest EPG data.
The PG data is updated. Further, the user's operation unit 114
The EPG data is received in response to the EPG data reception instruction by the operation of (1), and the received EPG data is stored in the memory 107.

Further, TS data is transmitted in packet units, and a PID (PacketT IdenTif
icaTion). Demultiplexer 103
Identifies the video data D1, audio data D2, and EPG data D3 by reading the PID.

Each block is connected to a common bus 118, as shown in FIG.

First, the video data will be described. The video decoder 104 performs MPEG2 decoding processing on the video data D1 input from the demultiplexer 103, and outputs the decoded video data to the display control unit 109. The display control unit 109 controls the video decoder 10
4. The image data input from the EPG screen forming unit 108, the UI screen forming unit 111, and the cursor generating unit 117 are displayed on the image display unit 112 by switching or multiplexing the screens according to the operation of the operation unit 114. .

Here, the UI screen forming unit 111 includes the operating unit 1
In response to the operation 14, a screen for supporting the user operation is created and output to the display control unit 109. Cursor generator 11
Reference numeral 7 outputs the video data of the selection cursor to the display control unit 109 so as to display the selection cursor on a screen that requires the selection cursor, such as an EPG screen. The operation unit 114
The video data of the selection cursor is output to the display control unit 109 so as to move the selection cursor on the screen in response to the operation. The EPG screen forming unit 108 will be described later.

The image display unit 112 includes a monitor and a video signal input terminal (not shown).

Next, audio data will be described. The audio decoder 105 performs MPEG2 decoding processing on the audio data D2 input from the demultiplexer 103, and outputs the decoded audio data to the DAC 110. DAC 110 is an audio decoder 105
The input audio data is subjected to D / A conversion processing and output to the audio output unit 113. The audio output unit 113 includes a speaker and an audio signal input terminal (not shown).

Next, the EPG data will be described.
The data required to construct the EPG is "IEC13818-1M
"PEG2 SYSTEM" and the Association of Radio Industries and Businesses (known as ARIB)
Is transmitted in a data structure defined by a standard such as "program display information used for digital broadcasting". S that transmits information about the organization channel, such as the name of the organization channel and the name of the broadcaster, as the main configuration data
BAT (Bouquet Assoc) that transmits information about the bouquet, such as DT (Service Description Table), the name of the bouquet (set of organized channels), and the included channels.
EIT (Event Infor) that transmits information about the program, such as the information table, the program name, the broadcast start date and time, and a description of the content.
mation table), TD that transmits current date and time information
T (Time Date Table) and the like.

When an operation for displaying an EPG is performed on the operation unit 114, an EPG display instruction from the operation unit 114 is input to the system control unit 116.

When an EPG display instruction is input from the operation unit 114, the system control unit 116 reads necessary information from the memory 107 and outputs it to the EPG decoder 106. The EPG decoder 106 performs a decoding process on the EPG data D3, and decodes the decoded EPG data D4.
Is output to the EPG screen configuration unit 108.

The EPG screen forming unit 108 generates various signals such as a character signal for forming an EPG screen based on the EPG data D4 input from the EPG decoder 106 and a control signal from the system control unit 116. ,
Output to the display control unit 109. The display control unit 109 outputs a video signal to the image display unit 112 to switch and display a video screen, an EPG screen, or the like.

The system control unit 118 includes a microprocessor, and has various operation switches for channel selection, power ON, and the like.
The tuner 101, the descrambler 102, the demultiplexer 103, the respective decoders 104 to 106, the screen composing unit 108, the display control unit 109, and the DAC 110 are controlled.

FIG. 2 shows a display example of the EPG screen displayed by such processing. The user operates the remote control guide 20
By operating the 1 arrow key, the selection cursor 202 is displayed.
To a desired program, and press a decision button 506 to select a desired program.

Here, when the selection is determined using the selection cursor 202 as in an EPG screen or an EPG information setting screen described later, a remote control guide 201 is displayed on the screen.

Each operation key of the remote control guide 201 is shown in FIG.
The keys correspond to the operation keys of the remote controller as shown in FIG.
Corresponds to the up, right, and down keys. That is, when the keys 2, 4, 6, and 8 on the remote controller are pressed, the system control unit 116 controls the display control unit 109 to move the selection cursor 202 left, up, right, and down, respectively. The cancel button and the enter button on the remote control guide 201 are the cancel button 505 and the enter button 50 of the remote control.
6 is operated.

Further, when it is desired to directly input a number using a numeric keypad for changing channels while an EPG screen or an EPG information screen to be described later is displayed, a remote controller switching key 510 of the remote controller is pressed as shown in FIG. . When the remote control switching key 510 is pressed, the display of the arrow keys of the remote control guide 201 is changed to the display of ten keys, and the display is the same as each key of the remote control in FIG. Then, the system control unit 116 performs a control operation according to the operation keys of the remote controller. However, when the remote control guide 201 is not displayed on the screen, the operation acceptance of the remote control switching key 510 is prohibited.

As shown in FIG. 3, it is also possible to display the EPG information of the program being broadcast on a broadcast screen displaying a video relating to the selected program. In the figure,
Reference numeral 301 denotes a screen displaying a broadcast being received, and 302 denotes EPG information of a selected program.

The EPG information 302 is displayed based on the display contents, display position, presence / absence of display, etc. set on the EPG information setting screen as shown in FIG. 401 is an EPG
A content setting area for setting the presence or absence of display of each item of information; 402, a display mode when the selected item is not displayed in the EPG information setting area; 403, a display position of EPG information on the broadcast screen; , A determination button 405 for finally determining the setting contents of the EPG information setting screen, a return button for returning to the previous screen, and 406 a selection cursor for selecting each item.

Here, the remote control guide on the EPG information setting screen is the same as the remote control guide 201 on the above-mentioned EPG screen, and the user operates the remote control as shown in FIG. By moving the cursor 406 to any item of the EPG information and pressing the cancel button 505 or the decision button 506,
Set non-display or display of the item.

In the position setting area 403, the selection cursor 406 is set to any position, and the non-display or display of the position is set by pressing the cancel button 505 or the decision button 506. In FIG. 4, the setting is such that the genre item is not displayed and the EPG information is displayed on the upper right.

FIG. 5 shows a configuration example of a remote controller which is a part of the operation unit 114. However, this figure shows only buttons for performing operations for realizing the functions necessary for explaining the present embodiment, and the operation buttons necessary for the actual receiving apparatus are not limited to these.

A pointing device such as a mouse can be used in addition to the one shown in FIG.

In FIG. 5, reference numeral 501 denotes a light emitting unit for performing infrared communication between a remote controller and a light receiving unit provided in the main body of the digital broadcast receiving apparatus, 502, a power key for turning on / off the power, and 503, the EPG information described above. A menu button for displaying a menu screen for selecting the display of the setting screen, etc.
Reference numeral 504 denotes a numeric keypad for inputting a number such as a channel number, 505 denotes a cancel button for canceling the number input by the numeric keypad, 506 denotes a determination button for determining the number input by the numeric keypad, and 507 denotes an output voice. A mute button for turning off, an up / down key 508 for increasing / decreasing the channel number, a volume button 509 for increasing / decreasing the volume of the output sound, and a remote control switch 510 for switching a correspondence between a remote control key and a command. Is the key.

Next, the channel selection operation will be described in detail.

First, a case where a channel number is selected by inputting a channel number on the operation unit 114 will be described.

The user presses a ten key on the remote controller as shown in FIG. 5, and inputs a desired channel number. Here, the main unit includes a display unit (not shown) for displaying a channel number, and changes the channel number display according to a ten-key input of a remote controller. The system control unit 116
The tuner unit 101 is controlled so as to receive TS data in which data related to the input channel number is multiplexed. The TS data received by the tuner unit 101 is
If the data input to the descrambler 102 and the data related to the input channel number is scrambled, based on the key information in the TS data and the key information output from the IC card control unit 115 as described above. Perform descrambling.

The data descrambled by the descrambler 102 is separated by the demultiplexer 103 into video data D1 and audio data D2, and input to the video decoder 104 and the audio decoder 105, respectively. The video decoder 104 and the audio decoder 105 decode the video data and the audio data, respectively, and output the decoded data to the image display unit 112 and the audio output unit 113 via the display control unit 109 and the DAC 110.

Next, a case where a desired program is selected on the EPG screen as shown in FIG. 2 will be described.

As shown in FIG. 2, on the EPG screen, program information is displayed on the vertical axis in the order of channel numbers and on the horizontal axis in the order of broadcast start time, and a program is selected by the selection cursor 202 in the EPG screen. The user operates the remote control guide 201 by operating the remote control shown in FIG. 5 as described above, and moves the selection cursor 202 to a desired program to determine the selection.

Further, even when the EPG screen is being displayed as described above, it is possible to select a program by inputting a channel number.

Next, a case where a channel is selected by operating the up / down key 508 as shown in FIG. 5 will be described.

FIG. 6 shows the system control unit 116 when a channel is selected by operating the up / down key 508.
6 is a flowchart showing the operation of the embodiment.

In S601, when the user presses the up / down key 508 as shown in FIG. 5, the timer in the system control unit 116 is turned on (S602). At this time, time T = 0.

In step S603, the value of the NCH (next channel), which is the channel to be received, is changed. Here, the value of NCH is changed based on channel number information indicating which channel is present in response to a channel up / down operation. The channel number information is periodically multiplexed with the TS data and transmitted, and is extracted from the TS data by the demultiplexer 103 described above.

Based on the channel program information extracted by the demultiplexer 103, the system control unit 116
The next larger or smaller channel number after H (current channel) is read and set as the value of NCH.

In S604, it is determined whether or not NCH is a receivable channel. Here, system control section 116 determines whether or not NCH can be received based on scramble information included in the TS data and contract information included in IC card control section 115.

If it is determined that the NCH is not a receivable channel, the process returns to S602, resets the timer, and changes NCH to the next value (S603). N
If it is determined that CH is a receivable channel, N
The EPG information related to the CH is displayed (S605). Here, the system control unit 116 reads out the EPG data related to the NCH from the memory 107, and
6. Each unit is controlled via the EPG screen configuration unit 108 and the display control unit 109 so as to output the EPG information to the image display unit 112 as shown in FIG.

In S606, it is determined whether or not the up / down key 508 has been pressed. If it is determined that the up / down key 508 has been pressed, the time T measured by the above-described timer is set in advance. It is determined whether it is longer than the predetermined time T2 (S60).
7). That is, it is determined whether or not the predetermined time T2 has elapsed since the up / down key 508 was continuously pressed.

If it is determined that the time T is longer than the predetermined time T2, the process returns to S602, and the processing of displaying NPG EPG information is repeated. If it is determined that the time T is shorter than the predetermined time T2, the process returns to S606.

In step S606, the up / down key 508
If it is determined that is not pressed, the timer is reset, and the time from when the pressing of the up / down key 508 is stopped is measured (S608). At this time, time T = 0. In S609, it is determined whether the time T is longer than a predetermined time T1 set in advance (S609). That is, it is determined whether or not the predetermined time T1 has elapsed since the pressing of the up / down key 508 was stopped.

If it is determined that the time T is shorter than the predetermined time T1, it is determined in S610 whether the up / down key 508 has been pressed again. If it is determined that the key has not been pressed, the flow returns to S609. If it is determined that the up / down key 508 has been pressed, the process returns to S602 to perform NCH EPG information display processing.

In S609, the time T is equal to the predetermined time T1.
If it is determined that the value is larger than the predetermined channel T, that is, if it is determined that the predetermined time T1 has elapsed since the pressing of the up / down key 508 was stopped, the value of the CCH (current channel) that is the currently received channel is set to NCH And controls the tuner unit 101 to receive the NCH (S611).

That is, the system control unit 116 executes S611
Until the broadcast program is reached, the broadcast video of the same program is continuously displayed on the broadcast screen without changing the received program, and only the EPG information display is changed corresponding to the selected channel.

Here, the predetermined time T1 and the predetermined time T2
Is set on the time setting screen as shown in FIG.
This time setting screen is displayed on the menu button 503 of the remote control.
Is pressed to display a menu screen (not shown).

On the time setting screen, by operating the ten keys 504 of the remote controller, a number is entered in the setting field of T1,
When the enter button 506 is pressed, a cursor (not shown)
Move to the setting column of 2. Furthermore, when a number is entered in the setting field of T2 and the enter button 506 is pressed, a cursor (not shown) moves to the setting field of T1.

In order to finally determine T1 and T2 set in this way, the determination button 506 is pressed for several seconds and the time setting screen is terminated.

The predetermined times T1 and T2 can be set from 0 to 5 seconds in increments of 0.1 second. When T1 = 0 seconds, the pressing of the up / down key 508 is stopped at the same time. The value of CCH is changed to the value of NCH (S611 in FIG. 6).

As described above, in this embodiment, when a channel is selected by operating the up / down key of a channel, the reception is not performed until the up / down key is not pressed again within a predetermined time after the pressing of the up / down key is stopped. Since the channel to be changed is changed, the time required for decoding the video data in each channel not desired by the user can be eliminated, and the time required for selecting the channel desired by the user can be reduced.

In this embodiment, the display of the EPG information is changed according to the operation of the up / down key.
The user can find a desired program while checking the PG information.

Further, in this embodiment, the condition setting for the duration of the press of the up / down key and the time from the stop of the press of the up / down key to the press of the up / down key again can be changed by the user operation. The timing for shifting to the process for the next channel number can be changed to the timing desired by the user, and a more flexible channel selection operation can be performed.

For example, if it is desired to shift the channel while checking the EPG information, the conditions for shifting to the processing for the next channel number are as follows: Set a longer time until is pressed.

In this embodiment, the predetermined times T1 and T2
Can be set in 0.1 second increments from 0 to 5 seconds, but the predetermined times T1 and T2 are not limited to these times, and may be set to any time within a range where no inconvenience occurs during channel operation. .

In this embodiment, the predetermined times T1 and T2 are set by inputting numbers on the time setting screen. However, the power key 502 and the menu By pressing an arbitrary operation key other than the button 503, the cancel button 505, and the enter button 506 twice, the interval between the presses may be set to a predetermined time, and the enter button 506 may be used to confirm.

In this embodiment, if the up-down key is not pressed again within a predetermined time after the pressing down of the up-down key, the channel selected in the tuner section is changed. The channel may be changed according to the pressing of the up / down key, and the operation of each decoder unit may be started only after the pressing of the up / down key is stopped and the up / down key is not pressed again within a predetermined time.

In this embodiment, the EPG shown in FIG.
The remote control guide is displayed on the screen and the EPG information setting screen shown in FIG. 4, and the remote control guide is operated by operating the remote control of the operation unit 114. The selection cursor may be moved or the selection item may be determined without going through.

In this embodiment, the EPG shown in FIG.
Although the remote control guide on the screen and the EPG information setting screen shown in FIG. 4 is operated by operating the remote control of the operation unit 114, the remote control guide is not limited to the remote control of the operation unit 114. The remote control guide may be operated by an operation.

The E related to the newly received channel
The PG information may be configured to be automatically deleted from the broadcast screen after a predetermined time has elapsed.

Next, a second embodiment of the present invention will be described in detail.

The digital TV broadcast receiver according to the present embodiment has the same configuration as the digital TV broadcast receiver according to the first embodiment.

This embodiment is different from the first embodiment in that
When a channel is selected by operating the channel up / down key 508, a screen confirmation mode for changing a channel to be received in accordance with the operation of the up / down key 508, and again within a predetermined time after stopping the pressing of the up / down key 508 When the up / down key 508 is not depressed, the channel to be received is changed for the first time when the first channel is changed, and when the up / down key 508 is not pressed again within a predetermined time after the up / down key 508 is stopped,
In addition to changing the receiving channel, a high-speed switching second mode for changing the receiving channel for each predetermined channel is provided.

FIG. 8 shows a basic setting screen for setting each mode described above. FIG. 8 is a screen provided with a mode setting area on the EPG information setting screen according to the first embodiment. The setting items in the mode setting area and the setting items in the display position setting area are as described above.

First, the mode setting will be described. FIG.
801 is a mode setting area, 802 is a setting selection display of the high-speed switching first mode which is not received immediately after the operation of the up / down key 508 as in the first embodiment, 803
Is not received immediately after the operation of the up / down key 508 as in the first embodiment, but is a setting selection display of a high-speed switching second mode for changing a channel to be received for each predetermined channel. It is a setting selection display of a screen confirmation mode for changing a channel to be received immediately after the operation.

The mode setting in FIG. 8 is performed by operating the remote controller so as to move the selection cursor to each mode display and pressing the enter button 506 or the cancel button 505 to set or cancel the setting of each mode.

In the setting of the high-speed switching second mode, the selection cursor is moved to the setting selection display 803 of the high-speed switching second mode as described above, and the enter button 506 is pressed. State. Here, in the setting field of the number of channel changes,
Any number from 1 to 20 is displayed, and by operating an arrow key on the remote control guide 201, the number increases or decreases.

Next, the setting of the EPG information display position will be described. The display position setting area 40 is operated by remote control operation.
By moving the selection cursor 406 to one of the four corners of the screen in 3 and pressing the cancel button 505 or the enter button 506, non-display or display of the EPG information at the selected position is set. Also, the decision button 50
By repeatedly pressing 6, the user can set either the NCH EPG information display or the CCH EPG information display at the selected display position.

Here, the content to be displayed in the content setting area 401 of the basic setting screen is set as the EPG information of the NCH, while the EPG information of the CCH is a channel number and a program title.

In the basic setting screen shown in FIG. 8, after the up / down key 508 is stopped, if the up / down key 508 is not pressed again within a predetermined time, the channel to be received is changed not only for the first time but also ten times. It is set to change the receiving channel every time. In addition, settings are made so that the EPG information of the NCH is displayed at the upper right of the screen, and the EPG information of the CCH is displayed at the lower right of the screen.

Next, the channel selection operation will be described.

The channel selection operation in the case of selecting a channel by inputting a channel number in the operation unit 114 and the channel selection operation in the case of selecting a desired program on the EPG screen are the same as those in the first embodiment in each mode. It is.

The operation for selecting a channel by operating the up / down key 508 will be described.

In the screen confirmation mode, the receiving channel is changed in accordance with the operation of the up / down key 508, and the video relating to the changed channel is displayed. The operation at this time is the same operation as the channel selection by the direct number input and the channel selection by the selection on the EPG screen in the first embodiment.

However, when displaying the EPG information in the screen check mode, the EPG of the currently received CCH is displayed.
Display information only.

In the high-speed switching first mode, the operation is the same as in the first embodiment. However, for the EPG information, the NC specified by the up / down key 508
The EPG information of H and the currently received CCH, that is, the EPG information of the channel displayed on the broadcast screen are displayed on the broadcast screen.

The NCH EPG information is changed in response to the pressing of the up / down key 508 and is displayed in red. Further, when the receiving channel is changed and the NCH specified by the up / down key 508 and the channel displayed on the broadcast screen become the same, the EPG information of the NCH is displayed in green.

[0094] In addition, when the channel displayed on the broadcast screen and the NCH are different, the EPG information of the CCH is
H is displayed on the broadcast screen separately from the EPG information. In other words, while the NCH is being changed by pressing the up / down key 508, it is displayed on the broadcast screen, the channel to be received is changed, and the N channel specified by the up / down key 508 is changed.
When the channel and the channel displayed on the broadcast screen become the same, the channel is deleted from the broadcast screen.

A case in which channel selection is performed by operating the up / down key 508 in the high-speed switching second mode will be described. FIG. 9 shows a system control unit 11 when a channel is selected by operating the up / down key 508.
6 is a flowchart illustrating an operation of the sixth embodiment.

The operations in S901 to S904 are the same as those in S60 in FIG.
The operations are the same as those in steps 1 to S604. In S905,
One is added to a counter that counts the number of times the receivable channel is changed. In S906, it is determined whether or not the number of channel changes is equal to or greater than the number N of changes set on the basic setting screen.

If it is determined that the number of changes is N or more, the value of NCH is used as the value of CCH, and tuner section 101 is controlled to receive CCH (S907). S908
In the above, the ECH information of the NCH displayed at the display position set on the basic setting screen is changed to the EPG information of the channel set as the CCH, and the display is displayed in red until the video related to the CCH is displayed on the screen. .

Then, at the same time when the video relating to CCH is displayed on the screen, the EPG information of NCH is changed to green,
H EPG information is deleted from the broadcast screen. Further, the counter for counting the number of changes is reset (S90).
9) The process proceeds to S913.

If it is determined in S906 that the number of changes is not N or more, it is determined whether the number of changes is one (S910), and if it is determined that the number of changes is one, the CCH The EPG information is displayed in green at the display position set on the basic setting screen (S911). When it is determined that the number of changes is not one, the EPG information of the NCH is displayed in red at the display position set on the basic setting screen described above (S912).

The operations of S913 to S917 are performed in S60 of FIG.
The operations are the same as those in steps 6 to S610.

In S918, it is determined whether the value of CCH is equal to the value of NCH. If it is determined that the value of CCH is equal to the value of NCH, that is, the channel to be received by the predetermined number of N times of channel change is determined. If changed, the channel selection operation ends. The value of CCH is NC
If it is determined that the value is different from the value of H, in S919, N
The value of CH is set to the value of CCH, and tuner section 101 is controlled to receive CCH.

FIG. 10 is a display example of EPG information displayed based on the settings on the basic setting screen shown in FIG. The EPG information 302 of the NCH is displayed at the upper right of the screen.
The channel is displayed in red when the channel is selected by the up / down key 508, and is displayed in green when the channel corresponds to the image displayed on the broadcast screen. The EPG information 1001 of the CCH is displayed at the lower right of the screen, is displayed in green, and is erased from the screen when the channel corresponds to the video displayed on the broadcast screen.

As described above, in the present embodiment, when a channel is selected by operating a channel up / down key, the reception is not performed until the up / down key is not pressed again within a predetermined time after the up / down key is stopped. Since the channel to be changed is changed, the time required for decoding the video data in each channel not desired by the user can be eliminated, and the time required for selecting the channel desired by the user can be reduced.

In this embodiment, the display of the EPG information is changed according to the operation of the up / down key.
The user can find a desired program while checking the PG information.

In this embodiment, the condition setting for the duration of the press of the up / down key and the time from when the press of the up / down key is stopped until the up / down key is pressed again can be changed by the user operation. The timing for shifting to the process for the next channel number can be changed to the timing desired by the user, and a more flexible channel selection operation can be performed.

For example, if it is desired to shift the channel while confirming the EPG information, the conditions for shifting to the processing for the next channel number include the duration of the press of the up / down key and the stop of the press of the up / down key. Set a longer time until is pressed.

In the present embodiment, the predetermined times T1 and T2
Can be set in 0.1 second increments from 0 to 5 seconds, but the predetermined times T1 and T2 are not limited to these times, and may be set to any time within a range where no inconvenience occurs during channel operation. .

In this embodiment, the predetermined times T1 and T2 are set by inputting numbers on the time setting screen. However, in the time setting screen (not shown) different from this embodiment, the power key 502 and the menu By pressing any operation key other than the key 503, the cancel key 505, and the enter key 506 twice, the interval between the presses may be set to a predetermined time and the enter key 506 may be used to confirm.

In this embodiment, the EPG shown in FIG.
The remote control guide is displayed on the screen and the EPG information setting screen shown in FIG. 4, and the remote control guide is operated by operating the remote control of the operation unit 114. The selection cursor may be moved or the selection item may be determined without going through.

In this embodiment, the EPG shown in FIG.
Although the remote control guide on the screen and the EPG information setting screen shown in FIG. 4 is operated by operating the remote control of the operation unit 114, the remote control guide is not limited to the remote control of the operation unit 114. The remote control guide may be operated by an operation.

[0111] The EPG information of the NCH displayed in green may be automatically deleted from the broadcast screen after a predetermined time has elapsed.

In this embodiment, when the EPG information of the NCH does not correspond to the video data displayed on the broadcast screen, the EPG information of the NCH is displayed in red, and when the EPG information corresponds, the green is displayed in green. However, this display color is not limited to red and green and may be any color.

In the screen confirmation mode, the EPG information is not displayed in the broadcast screen, but the channel number corresponding to the broadcast screen is displayed. In the high-speed switching first or second mode, the EPG information is displayed in the broadcast screen. May be set as a default.

In this embodiment, if the up-down key is not pressed again within a predetermined time after the up-down key is stopped, the channel selected in the tuner section is changed. The channel may be changed according to the pressing of the up / down key, and the operation of each decoder unit may be started only after the pressing of the up / down key is stopped and the up / down key is not pressed again within a predetermined time.

[0115]

As described above, according to the present invention,
After the channel selection operation, the time until the next channel selection operation becomes possible can be reduced.

Further, when the channel number is sequentially changed and the selection operation is performed, the time required for the user to select the desired channel can be reduced.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a digital TV broadcast receiving apparatus to which the present invention is applied.

FIG. 2 is a diagram showing a display example of an EPG screen.

FIG. 3 is a diagram showing a display example of a broadcast screen on which EPG information is multiplexed.

FIG. 4 is a diagram showing a display example of an EPG information setting screen.

FIG. 5 is a diagram illustrating an example of a remote controller included in the operation unit 114.

FIG. 6 shows a system control unit 116 according to the first embodiment.
6 is a flowchart showing the channel selection operation of FIG.

FIG. 7 is a diagram showing a display example of a time setting screen.

FIG. 8 is a diagram showing a display example of a basic setting screen.

FIG. 9 illustrates a system control unit 116 according to the second embodiment.
6 is a flowchart showing the channel selection operation of FIG.

FIG. 10 is a diagram illustrating a display example of a broadcast screen in which EPG information of NCH and CCH is multiplexed.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/035 H04Q 9/00 301 F term (reference) 5C025 AA23 CA06 CA09 CB05 CB09 CB10 DA01 DA04 DA10 5C056 AA05 BA02 CA06 DA08 DA09 DA20 5C063 AA20 AB03 AB07 AB20 AC10 CA11 CA16 CA23 CA29 CA36 CA40 DA07 DB10 5K048 AA08 BA03 FB10 FB15 HA04 HA06

Claims (22)

[Claims] 1. A receiving means for receiving program data relating to a program, a specifying means for specifying a program to be received by the receiving means, and the specifying operation not being performed for a predetermined period from a specifying operation by the immediately preceding specifying means. Control means for controlling the receiving means so as to receive the program specified by the specifying means in response to the request. 2. When a second program is designated within the predetermined period after the designation of the first program by the designation means,
2. The signal processing apparatus according to claim 1, wherein the control unit controls the receiving unit so as to continuously receive the first program. 3. The method according to claim 1, wherein the specifying unit includes a specifying switch for specifying a program, and while the specifying switch is continuously operated, the control unit does not change the program received by the receiving unit. 2. The signal processing apparatus according to claim 1, wherein the signal processing unit controls the receiving unit to receive the program data. 4. The designating means includes a designation switch for designating a program, and when the designation switch is operated again within the predetermined time after the designation switch is operated, the control means: 2. The signal processing apparatus according to claim 1, wherein the receiving means is controlled so as to receive the program data without changing the program received by the receiving means. 5. When the second program is designated after the lapse of the predetermined period after the designation of the first program by the designation means, the control means controls the reception so as to receive the second program. 2. The signal processing device according to claim 1, wherein the control unit controls the means. 6. The control means according to claim 5, wherein
2. The signal processing apparatus according to claim 1, wherein the receiving unit is controlled so as to receive the program specified by the specifying unit at the Nth time for each of the specifying operations. 7. The signal processing apparatus according to claim 1, further comprising setting means for manually setting the predetermined time. 8. The receiving means further comprises display means for receiving program information data relating to the program and displaying a video relating to the program data and program information relating to the program information data received by the receiving means. 2. The signal processing apparatus according to claim 1, wherein the control unit controls the display unit in accordance with a reception operation of the reception unit or a designation operation of the designation unit. 9. The control means displays an image relating to the received program in response to a receiving operation of the receiving means, and further includes program information relating to the specified program in response to a specifying operation of the specifying means. 9. The signal processing device according to claim 8, wherein the display unit is controlled so as to display. 10. The display means displays program information relating to a program designated by the designation means, and when an image relating to the same program as the program relating to the displayed program information is displayed by the display means. 9. The signal processing apparatus according to claim 8, wherein the control unit controls the display unit so as to change a display color of the displayed program information. 11. When the program related to the program data received by the receiving unit is different from the program specified by the specifying unit, the control unit controls the received program information together with the program information related to the specified program. 9. The signal processing apparatus according to claim 8, wherein said display means is controlled to display program information of a program related to program data on the same screen. 12. The control unit prohibits display of program information of the program related to the received program data in response to the video of the program related to the received program data being displayed by the display unit. The signal processing apparatus according to claim 11, wherein the display means is controlled as described above. 13. A receiving means for receiving program data relating to a program, a designating means for designating a program to be received by the receiving means, and a control means for controlling the receiving means in accordance with the operation of the designating means. Wherein the control means includes: a first mode for receiving the specified program in response to the specifying operation by the specifying means; and the specifying operation not being executed for a predetermined period from the immediately preceding specifying operation by the specifying means. And a second mode for receiving the program specified by the specifying means in accordance with the first mode. 14. The receiving means further comprises display means for receiving program information data relating to the program and displaying a video relating to the program data and program information relating to the program information data received by the receiving means. 14. The apparatus according to claim 13, wherein the control unit sets the first mode when the display unit does not display the program information, and sets the second mode when the display unit displays the program information. A signal processing device according to claim 1. 15. The signal processing apparatus according to claim 13, further comprising switching means for switching between the first mode and the second mode. 16. A receiving means for receiving program data relating to a program, a specifying means for specifying a program to be received by the receiving means, and a control means for controlling the receiving means in accordance with an operation of the specifying means. Comprising, the control means, a first mode in which the receiving means receives a program specified by the specifying means according to a specifying operation by the specifying means,
A second mode for receiving a program specified by the specifying means in response to the specified operation not being performed for a predetermined period from the immediately preceding specifying operation by the specifying means; and A third mode for receiving a program designated by the designation unit in response to the designation operation not being executed or the designation operation by the designation unit being performed a predetermined number of times. Processing equipment. 17. The receiving means further comprises display means for receiving program information data relating to the program and displaying a video relating to the program data and program information relating to the program information data received by the receiving means. The control means sets the first mode when the program information is not displayed by the display means, and sets the second mode or the third mode when the program information is displayed by the display means. The signal processing device according to claim 16, wherein 18. The signal processing apparatus according to claim 16, further comprising switching means for switching between the first mode, the second mode, and the third mode. 19. A decoding means for decoding program data relating to an inputted program, a designating means for designating the program to be inputted, and wherein the designating operation is not executed for a predetermined period from a designating operation by the designating means immediately before. Control means for controlling the decoding means so as to decode the program designated by the designation means in response to the request. 20. Receiving program data relating to a program, designating the program to be received, and receiving the designated program in response to the fact that the designated operation has not been executed for a predetermined period from the immediately preceding designated operation. A signal processing method. 21. Receiving means for receiving program data relating to a program, switching means for switching a receiving channel in response to operation of an up / down key for instructing program switching, and switching of the receiving channel during continuous operation of the up / down key. Control means for controlling the switching means so as not to perform the switching. 22. Receiving means for receiving program data relating to a program, switching means for switching a receiving channel in response to operation of an up / down key for instructing program switching, and within a predetermined period from the immediately preceding operation of the up / down key. Control means for controlling the switching means so as not to switch the receiving channel when the up / down key is operated.