JP5115155B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiver capable of receiving digital broadcast and analog broadcast.

  Currently, digital broadcasting and analog broadcasting are mixed in television broadcasting services, and broadcast receivers having a function of receiving both digital broadcasting and analog broadcasting are widely used. In such an analog / digital shared receiver, an operation for selecting a desired channel becomes complicated, and a more desirable channel selection method is required.

For example, when a numeric key is operated, the channel selection device disclosed in Patent Document 1 selects a main channel and a predetermined sub-channel assigned to the numeric key, and continues to use the same numeric key within a predetermined time. By accepting this input as a sub-channel change instruction when is operated, an arbitrary main channel and sub-channel can be selected by operating one numerical key.
In Patent Document 2, each time the next number is input, the previously input number is shifted to the left by one digit and the next number is additionally displayed at the right end. There has been proposed a digital broadcast receiver that displays a symbol that separates a channel and a subchannel and switches to broadcasting of the input channel when the input of the subchannel number is completed.
JP 2003-189199 A JP 2002-344828 A

By the way, depending on the region, as a digital broadcasting channel, there is a mixture of a 1-part channel selected by designating only the virtual main channel and a 2-part channel selected by designating the virtual main channel and virtual sub-channel. There is. In such a broadcast reception environment, the conventional broadcast receivers such as Patent Document 1 and Patent Document 2 described above have a problem that appropriate channel selection cannot be performed for a user's channel input.
Specifically, cable television broadcasting in North America is an example of a broadcast reception environment in which one part channel and two part channels are mixed as digital broadcasting channels. In North American cable television broadcasting, as a virtual channel for digital broadcasting, a one-part channel (for example, “456”) composed of a group of numbers and a two-part channel (for example, two numbers separated by a symbol such as a hyphen) ( For example, “45-6”) is mixed, and the user wants to select an analog broadcast channel or a digital broadcast channel only by inputting a virtual main channel by the user. Therefore, it is difficult to select a channel desired by the user, such as a complicated operation is required or a channel other than the desired channel is selected.

  The subject of this invention is providing the broadcast receiver which can perform the channel selection which a user desires more suitably with respect to a user's input.

In order to solve the above problem, the invention according to claim 1 is a broadcast receiver capable of receiving digital broadcast and analog broadcast.
Storage means for storing a physical channel, a virtual main channel, and a virtual subchannel of receivable channels;
First channel information for designating a channel by inputting only a virtual main channel, and a second channel for designating a channel by inputting predetermined symbols for separating the virtual main channel, virtual main channel, and virtual subchannel Information, a virtual main channel, the predetermined symbol, and a third channel information specifying a channel by inputting “0” as a virtual subchannel, a virtual main channel, “0” as the predetermined symbol, and a virtual subchannel. Key input means for receiving input of fourth channel information for designating a channel by inputting a number other than "
Determining means for determining a channel corresponding to the first to fourth channel information input by the key input means using the storage means;
With
The channels of digital broadcasting include a 1-part channel that is selected by designating only the virtual main channel and a 2-part channel that is selected by designating the virtual main channel and virtual sub-channel,
The determining means includes
When the first channel information or the third channel information is input by the key input means, the first part channel is preferentially selected over the two part channel, and the second channel information or the second channel information is selected. When 4-channel information is input, the 2-part channel is preferentially selected over the 1-part channel.

According to a second aspect of the present invention, in the broadcast receiver according to the first aspect, a virtual main channel corresponding to the first to fourth channel information input by the key input unit is stored in the storage unit. In this case, the physical channel of the corresponding virtual main channel is set as a physical channel to be selected, and the virtual main channel corresponding to the first to fourth channel information input by the key input unit is the storage unit. The physical channel setting means for setting the virtual main channel of the first to fourth channel information input by the key input means as a physical channel to be selected,
An update unit that selects a physical channel set by the physical channel setting unit and updates the storage unit based on a virtual main channel and a virtual subchannel of the acquired channel;
It is characterized by providing.

  According to a third aspect of the present invention, in the broadcast receiver according to the first or second aspect, when the third channel information is input by the key input unit, the determination unit is more analog than a digital broadcast channel. It is characterized by preferentially selecting a broadcast channel.

The invention according to claim 4 is a broadcast receiver capable of receiving digital broadcast and analog broadcast.
Storage means for storing a physical channel, a virtual main channel, and a virtual subchannel of receivable channels;
First channel information for designating a channel by inputting only a virtual main channel, and a second channel for designating a channel by inputting predetermined symbols for separating the virtual main channel, virtual main channel, and virtual subchannel Information, a virtual main channel, the predetermined symbol, and a third channel information specifying a channel by inputting “0” as a virtual subchannel, a virtual main channel, “0” as the predetermined symbol, and a virtual subchannel. Key input means for receiving input of fourth channel information for designating a channel by inputting a number other than "
When the virtual main channel corresponding to the first to fourth channel information input by the key input means is stored in the storage means, the physical channel for selecting the physical channel of the corresponding virtual main channel If the virtual main channel corresponding to the first to fourth channel information input by the key input means is not stored in the storage means, the first to first input by the key input means Physical channel setting means for setting the virtual main channel of the fourth channel information as a physical channel to be selected;
An update unit that selects a physical channel set by the physical channel setting unit and updates the storage unit based on a virtual main channel and a virtual subchannel of the acquired channel;
Determining means for determining a channel corresponding to the first to fourth channel information input by the key input means using the storage means updated by the updating means;
With
The channels of digital broadcasting include a 1-part channel that is selected by designating only the virtual main channel and a 2-part channel that is selected by designating the virtual main channel and virtual sub-channel,
The determining means includes
When the first channel information or the third channel information is input by the key input means, the first part channel is preferentially selected over the two part channel, and the second channel information or the second channel information is selected. When 4-channel information is input, the 2-part channel is preferentially selected over the 1-part channel,
When the third channel information is input by the key input unit, an analog broadcast channel is preferentially selected over a digital broadcast channel.

According to the present invention, a physical channel, a virtual main channel, and a virtual subchannel of receivable channels are stored by the storage unit, and the first channel is designated by inputting only the virtual main channel by the key input unit. Second channel information for specifying a channel by inputting channel information, a virtual main channel, a virtual main channel, and a virtual subchannel, and a predetermined symbol, and a virtual main channel, a predetermined symbol, and a virtual subchannel Third channel information for designating a channel by inputting “0”, and a fourth channel for designating a channel by inputting a virtual main channel, a predetermined symbol, and a number other than “0” as a virtual subchannel Information and input are accepted, By the constant unit, using the storage device, the channel corresponding to the first to fourth channel information input is determined by the key input means. Digital broadcast channels include a 1-part channel selected by designating only the virtual main channel and a 2-part channel selected by designating the virtual main channel and virtual sub-channel. When the first channel information or the third channel information is input by the key input means, the first part channel is preferentially selected over the second part channel, and the second channel information or the fourth channel information is input. In this case, the 2-part channel is preferentially selected over the 1-part channel.
That is, when only the virtual main channel is input by the key input means, or when “0” is input as the virtual main channel, the predetermined symbol, and the virtual sub-channel, it is more than the 2-part channel of digital broadcasting. Since it is considered that the user desires the one-part channel, the one-part channel is preferentially selected with respect to the two-part channel. Also, when a virtual main channel and a predetermined symbol are input by the key input means, or when a number other than “0” is input as the virtual main channel, the predetermined symbol, and the virtual subchannel, digital broadcasting Since it is considered that the user desires the 2-part channel rather than the 1-part channel, the 2-part channel is preferentially selected with respect to the 1-part channel. Therefore, it is possible to provide a broadcast receiver that can more suitably perform channel selection desired by the user in response to user input.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the present embodiment, for example, a cable television broadcast in a broadcast reception environment in which a 1 part channel and a 2 part channel are mixed as a digital broadcast channel will be described as an example.

The broadcast receiver 100 according to the present embodiment is a shared receiver for cable digital broadcast and cable analog broadcast, for example.
Specifically, the broadcast receiver 100 according to the present embodiment includes, for example, a receiving unit 1 that is connected to a cable line and receives a cable television broadcast signal, a descrambler unit 2 that performs descrambling processing, and a decoder that performs decoding processing. 3, a video processing unit 4 that performs predetermined video processing on the video signal, an audio processing unit 5 that performs predetermined audio processing on the audio signal, and an OSD that converts the video signal input from the video processing unit 4 to the display unit. An OSD circuit 6 for adding data, a video output unit 7 for outputting a video signal input from the video processing unit 4, an audio output unit 8 for outputting an audio signal input by the audio processing unit 5, and a user receiving various instructions By transmitting to the main unit, a key input unit 9 including a remote controller for operating the main unit of the receiver, and a control unit 1 for controlling the entire broadcast receiver 100 It is configured to include a like.

  The receiving unit 1 is connected to a cable line, receives a broadcast signal of a selected channel from an input cable television broadcast signal, and receives a predetermined demodulation method (for example, 64QAM: Quadrature Amplitude Modulation, 256QAM, 8VSB: Vestigial Sideband) demodulation processing, error correction processing, and the like are executed, and a transport stream (TS) is generated and output to the descrambler unit 2.

  The descrambler unit 2 is connected to an IC card such as a POD (Point of Deployment) card 21, for example. The POD card 21 has a release key for releasing the scramble, and is detachably attached to the apparatus main body. The descrambler unit 2 performs descrambling processing using the release key on the TS input from the receiving unit 1, and outputs the descrambled TS to the decoder unit 3.

  The decoder unit 3 includes, for example, a separation unit 31, a video decoder 32, an audio decoder 33, a data decoder 34, and the like.

The separation unit 31 separates the TS input from the descrambler unit 2 into a plurality of streams. In the TS, for example, video data, audio data, program data, and the like are multiplexed in the MPEG-2 Systems method.
The program data multiplexed and sent to the TS is, for example, PSIP (Program and System Information Protocol). PSIP is, for example, an STT (system time table) describing the current time, an MGT (master guide table) describing information (for example, PID, etc.) related to all other PSIP tables except the STT, being broadcast or scheduled to be broadcast A list of all virtual channels, VCT (virtual channel table) describing the number and name of each virtual channel, EIT (event information table) describing program titles and technical information of programs scheduled to be broadcast in the virtual channel, virtual channels And various tables such as ETT (extended text table) describing detailed information of the program. The VCT is, for example, a CVCT (cable VCT) for cable broadcasting. In addition, a path selection bit, an in-band signal, an out-of-band signal (out-of-band) Is included.
The CPU 101 analyzes these various tables included in PSIP to acquire necessary TS packets from the separated streams, and the video stream is transferred to the video decoder 32, the audio stream is transferred to the audio decoder 33, PSIP, etc. Are output to the data decoder 34.

The video decoder 32 decodes the video stream compressed by the MPEG-2 Video system or the like input from the separation unit 31. Specifically, the video decoder 32 performs various processes such as variable length decoding, inverse quantization, inverse DCT, and motion correction on the video stream, thereby decoding the video stream at a predetermined timing and converting the video data into Generate and output to the video processing unit 4.
The audio decoder 33 decodes the audio stream compressed by the Dolby AC-3 method or the like input from the separation unit 31, generates audio data, and outputs the audio data to the audio processing unit 5.

  The data decoder 34 decodes the input data such as PSIP and outputs it to the control unit 10, the OSD circuit 6, and the like. The PSIP input to the control unit 10 is stored in an EPG memory (not shown) and provided to the user as EPG information.

  The video processing unit 4 performs various video processes on the input video data to generate a video signal. The audio processing unit 5 performs various audio processes on the audio data input from the audio decoder 33 to generate an audio signal. The generated video signal is output to the video output unit 7, and the audio signal is output to the audio output unit 8.

  The OSD circuit 6 performs a process of combining OSD data (not shown) stored in the ROM 105 with a video signal input to the video processing unit 4 in response to an instruction output from the control unit 10.

The video output unit 7 includes a display screen such as an LCD (Liquid Crystal Display) or PDP (Plasma Display Panel), and displays a video based on the video signal input from the video processing unit 4 on the display screen at a predetermined timing. Let
The audio output unit 8 includes, for example, a speaker, and causes the speaker to output audio based on the audio signal input from the audio processing unit 5.

The key input unit 9 is, for example, a remote controller for remotely operating the receiver body, and includes a plurality of keys. The key input unit 9 outputs a remote control signal (hereinafter referred to as a remote control signal) corresponding to the pressed key in response to a key pressing operation by the user.
The key input unit 9 includes, for example, a numeric keypad for inputting a virtual main channel number / virtual subchannel number, a hyphen key for inputting a hyphen as a predetermined symbol for separating the virtual main channel and the virtual subchannel, An enter key or the like for confirming the input is provided, and is used for inputting the first to fourth channel information in the execution of a key input program 105a described later. The key input unit 9 thereby constitutes a part of the key input means.

  The control unit 10 includes a CPU (Central Processing Unit) 101, a time measuring unit 102, a RAM (Random Access Memory) 103, a channel memory 104, a ROM (Read Only Memory) 105, and the like.

  The CPU 101 executes various programs stored in the ROM 105 in accordance with input signals input from each unit of the receiver body, input operation signals input by key operations in the key input unit 9, and the like. The overall operation of the broadcast receiver 100 is comprehensively controlled by outputting an output signal to each part of the receiver body based on the program.

  The RAM 103 is used as a work area of the CPU 101, and stores processing results generated when various programs are executed by the CPU 101, input data, and the like.

The channel memory 104 is composed of, for example, a non-volatile memory such as an EPROM (Erasable Programmable ROM), and stores channel maps (ChMaps) of channels for digital broadcasting and analog broadcasting that can be received by the broadcast receiver 100.
In the channel map of the channel memory 104, for example, as shown in FIG. 2, a digital broadcast channel is a physical channel and a virtual main channel (virtual main channel, major) that is a virtual channel corresponding to the physical channel. channel) and virtual subchannel (virtual subchannel, minor channel) are stored in association with the classification of whether they are 1 part channel (1 part channel) or 2 part channel (2 part channel) Has been.
Thus, the channel memory 104 functions as a storage unit.

Here, the physical channel is a channel number associated with an actual frequency band in which the receiving unit 1 selects a channel. Each physical channel is associated with a frequency having a bandwidth of 6 MHz, for example.
The virtual main channel in digital broadcasting is a channel number recognized by a television broadcasting station or a user, and each is associated with a physical channel. Furthermore, each virtual main channel in digital broadcasting can include a plurality of virtual subchannels that are logical channels.

  The ROM 105 includes a program storage area, and stores, for example, a key input program 105a, a physical channel setting program 105b, an update program 105c, a determination program 105d, and the like.

The key input program 105a includes, for example, first channel information that designates a channel by inputting only the virtual main channel to the CPU 101, a predetermined symbol that separates the virtual main channel, the virtual main channel, and the virtual subchannel. , Second channel information for designating a channel, third main channel information for designating a channel by inputting “0” as a virtual main channel, a predetermined symbol, and a virtual subchannel, and a virtual main channel And a fourth channel information for designating a channel by inputting a predetermined symbol and a number other than “0” as a virtual sub-channel, and a program for realizing an input receiving function.
The CPU 101 functions as a key input unit together with the key input unit 9 by executing the key input program 105a.

Here, a specific example of the first to fourth channel information input by the user using the key input unit 9 in the execution of the key input program 105a will be described.
In the following description, the method of specifying a channel by inputting first channel information is “Null channel selection”, the method of specifying a channel by inputting second channel information is “X channel selection”, and the third channel information is A method for designating a channel by input is called ““ 0 ”channel selection”, and a method for designating a channel by inputting fourth channel information is called “Sub-designated channel selection”.

First, in Null channel selection, only the virtual main channel “8” is input as the first channel information, and the key input (ie, “8”) is confirmed by pressing the enter key.
Second, in the X channel selection, the virtual main channel “8” and the hyphen “−” (predetermined symbol separating the virtual main channel and the virtual subchannel) are input as the second channel information, and the enter The key input (ie, “8-”) is confirmed by pressing the key.
Third, in the “0” channel selection, the virtual main channel “8”, the hyphen “−”, and the virtual subchannel “0” are input as the third channel information, and key input is performed by pressing the enter key. (Ie, “8-0”) is confirmed.
Fourth, in the Sub designated channel selection, the fourth channel information includes a virtual main channel “8”, a hyphen “−”, and a number other than “0” (for example, “1”) as a virtual subchannel. The key input (ie, “8-1”) is confirmed by pressing the enter key.

The physical channel setting program 105b is, for example, when the CPU 101 stores the virtual main channel corresponding to the first to fourth channel information input by executing the key input program 105a in the channel memory 104 (storage means). Sets the physical channel of the corresponding virtual main channel as a physical channel to be selected, and the virtual main channel corresponding to the first to fourth channel information input by executing the key input program 105a is the channel memory 104. Is not stored, the program is for realizing a function of setting the virtual main channel of the first to fourth channel information input by executing the key input program 105a as a physical channel to be selected.
The CPU 101 functions as a physical channel setting unit by executing the physical channel setting program 105b.

  Here, a physical channel determination process for setting a physical channel according to each input of the first to fourth channel information will be described.

  First, a physical channel determination process executed when first channel information (for example, “8”) is input by Null channel selection will be described with reference to the flowchart of FIG.

  First, in step S1, the CPU 101 determines whether the physical channel P = the virtual main channel VM = the analog broadcast channel (NTSC Ch) of the main channel UM input by the user is in the channel map (ChMap) of the channel memory 104. to decide. If the CPU 101 determines that an analog broadcast channel of P = VM = UM is present in the channel map (step S1; Yes), the CPU 101 proceeds to step S2, and if not (step S1; No), proceeds to step S3.

  In step S2, the CPU 101 sets the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. The virtual subchannel VS is set to “0” (that is, analog broadcasting). Further, the channel selection process after the physical channel determination (hereinafter, the channel selection process after the physical channel determination is referred to as “TSM”) is determined as “NA” (described later), and this process is terminated.

  In step S <b> 3, the CPU 101 determines whether or not the virtual main channel VM = one part channel (1 Part Ch) of the main channel UM input by the user is in the channel map of the channel memory 104. When the CPU 101 determines that one part channel of VM = UM is present in the channel map (step S3; Yes), the CPU 101 proceeds to step S4. When it is determined that there is no one (step S3; No), the CPU 101 proceeds to step S5.

  In step S4, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. For example, a specific example when “8” is input as the UM by the user will be described with reference to the channel map of FIG. In the channel map of FIG. 2, a virtual main channel VM “8” for digital broadcasting and a virtual main channel VM “8” for analog broadcasting exist as channels of VM = UM “8”. The physical channel P corresponding to the main channel VM is “5”, and the physical channel P corresponding to the virtual main channel VM for analog broadcasting is “8”. Therefore, the CPU 101 sets the minimum physical channel “5” having VM = UM as the physical channel P to be selected. Further, the CPU 101 sets the main channel UM input by the user as the virtual main channel VM. Also, the virtual subchannel VS is not set as a one-part channel. Further, the TSM is determined as “A” (described later), and this process is terminated.

  In step S <b> 5, the CPU 101 determines whether or not the two-part channel (2 Part Ch) of the main channel VM = main channel UM input by the user is in the channel map of the channel memory 104. If the CPU 101 determines that the two-part channel of VM = UM is in the channel map (step S5; Yes), the CPU 101 proceeds to step S6, and if not (step S5; No), proceeds to step S7.

  In step S6, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. Further, the main channel UM input by the user is set as the virtual main channel VM. In addition, the minimum virtual subchannel VS included in the virtual main channel VM is set as the virtual subchannel VS. For example, a specific example when “8” is input as the UM by the user will be described with reference to the channel map of FIG. In the channel map of FIG. 2, there are two part channels of VM = UM “8”, and “1”, “2”, and “3” exist as virtual subchannels VS of VM “8”. Therefore, the CPU 101 sets the minimum virtual subchannel “1” included in the VM “8” as the virtual subchannel VS. Further, the TSM is determined as “AN” (described later), and this process is terminated.

  In step S7, the CPU 101 sets the main channel UM input by the user as the physical channel P to be selected. For example, a specific example when “13” is input as the UM by the user will be described with reference to the channel map of FIG. In the channel map of FIG. 2, there is no 2-part channel with VM = UM “13”. Therefore, the CPU 101 sets UM “13” as the physical channel P to be selected. Further, the CPU 101 sets the virtual subchannel VS to “0” (that is, analog broadcasting). Further, the TSM is determined as “NA”, and this process is terminated.

  Second, a physical channel determination process executed when second channel information (for example, “8-”) is input by X channel selection will be described with reference to the flowchart of FIG.

  First, in step S <b> 11, the CPU 101 determines whether or not the two-part channel of the virtual main channel VM = the main channel UM input by the user is in the channel map (ChMap) of the channel memory 104. When the CPU 101 determines that the two-part channel of UM = VM is in the channel map (step S11; Yes), the CPU 101 proceeds to step S12. When it is determined that there is no channel map (step S11; No), the CPU 101 proceeds to step S13.

  In step S12, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. Further, the main channel UM input by the user is set as the virtual main channel VM. In addition, the minimum virtual subchannel VS included in the virtual main channel VM is set as the virtual subchannel VS. Further, the TSM is determined as “AN”, and this process is terminated.

  In step S <b> 13, the CPU 101 determines whether or not the virtual main channel VM = one part channel of the main channel UM input by the user is in the channel map of the channel memory 104. When the CPU 101 determines that one part channel of VM = UM is in the channel map (step S13; Yes), the CPU 101 proceeds to step S14, and when it is determined that it is not in the channel map (step S13; No), the process proceeds to step S15.

  In step S14, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. Further, the main channel UM input by the user is set as the virtual main channel VM. Also, the virtual subchannel VS is not set as being a one-part channel. Further, the TSM is determined as “AN”, and this process is terminated.

  In step S15, the CPU 101 sets the main channel UM input by the user as the physical channel P to be selected. The virtual subchannel VS is set to “X” (undecided). Further, the TSM is determined as “AN”, and this process is terminated.

  Third, a physical channel determination process executed when third channel information (for example, “8-0”) is input by “0” channel selection will be described with reference to the flowchart of FIG.

  First, in step S <b> 21, the CPU 101 determines whether or not the virtual main channel VM = one part channel of the main channel UM input by the user is in the channel map of the channel memory 104. When the CPU 101 determines that one part channel of VM = UM is present in the channel map (step S21; Yes), the CPU 101 proceeds to step S22, and when it is determined that it is not present in the channel map (step S21; No), proceeds to step S23.

  In step S22, the CPU 101 sets the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. The virtual subchannel VS is set to “0” (that is, analog broadcasting). Further, the TSM is determined as “NA”, and this process is terminated.

  In step S23, the CPU 101 sets the main channel UM input by the user as the physical channel P to be selected. The virtual subchannel VS is set to “0” (that is, analog broadcasting). Further, the TSM is determined as “N” (described later), and this processing is terminated.

  Fourthly, a physical channel determination process that is executed when fourth channel information (for example, “8-1”) is input by the Sub designated channel selection will be described with reference to the flowchart of FIG.

  First, in step S <b> 31, the CPU 101 determines whether or not the two-part channel of the virtual main channel VM = the main channel UM input by the user is in the channel map of the channel memory 104. If the CPU 101 determines that the two-part channel of VM = UM is in the channel map (step S31; Yes), the CPU 101 proceeds to step S32, and if not (step S31; No), proceeds to step S35.

  In step S <b> 32, the CPU 101 determines whether or not the two-part channel of the virtual subchannel VS = subchannel US input by the user is in the channel map of the channel memory 104. If the CPU 101 determines that the two-part channel of VS = US is in the channel map (step S32; Yes), the CPU 101 proceeds to step S33, and if not (step S32; No), proceeds to step S34.

  In step S33, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. Further, the main channel UM input by the user is set as the virtual main channel VM. Further, the subchannel US input by the user is set as the virtual subchannel VS. Further, the TSM is determined as “A”, and this processing is terminated.

  In step S34, the CPU 101 sets the minimum physical channel P having the virtual main channel VM = the main channel UM input by the user as the physical channel P to be selected. Further, the main channel UM input by the user is set as the virtual main channel VM. Further, the subchannel US input by the user is set as the virtual subchannel VS. Further, the TSM is determined as “BA” (described later), and this processing is terminated.

  In step S35, the CPU 101 sets the main channel UM input by the user as the physical channel P to be selected. Further, the subchannel US input by the user is set as the virtual subchannel VS. Further, the TSM is determined as “BA”, and this process is terminated.

The update program 105c selects, for example, the physical channel set by the CPU 101 by executing the physical channel setting program 105b, and stores the channel memory 104 (storage means) based on the virtual main channel and virtual subchannel of the acquired channel. This is a program for realizing the function to be updated.
Specifically, when the physical channel to be selected is set in the execution of the physical channel setting program 105b described above, the CPU 101 outputs a channel selection instruction to the receiving unit 1 to perform digital broadcasting or analog transmission of the physical channel. Select a broadcast. Then, for example, the PSIP multiplexed with the broadcast signal (digital broadcast signal) of the selected physical channel is analyzed to extract the VCT, and based on the acquired VCT, a channel that is not in the channel map of the channel memory 104 is obtained. Add to the channel map.
FIG. 7 shows an example of the VCT acquired by selecting a physical channel in the execution of the update program 105c. The VCT in FIG. 7 includes, for example, channels that are not stored in the channel memory 104 in FIG. 2. These channels are added to the channel memory 104, and the channel memory 104 is updated. FIG. 8 is a diagram illustrating the channel memory 104 updated based on the VCT of FIG.
The CPU 101 functions as an update unit by executing the update program 105c.

The determination program 105d corresponds to the first to fourth channel information input by executing the key input program 105a using, for example, the channel memory 104 (storage means) updated by the CPU 101 by executing the update program 105c. This is a program for realizing a function for determining a channel. In the execution of the determination program 105d, the CPU 101 preferentially selects one part channel over the two part channel when the first channel information or the third channel information is input by the execution of the key input program 105a. When the second channel information or the fourth channel information is input, the 2-part channel is preferentially selected over the 1-part channel. Further, when the third channel number is input, a function of preferentially selecting an analog broadcast channel over a digital broadcast channel is realized.
The CPU 101 functions as a determination unit by executing the determination program 105d.

  Here, in the execution of the determination program 105d, the selected channel for determining the virtual channel to be selected based on the first to fourth channel information and the channel memory 104 using each TSM determined in the physical channel determination process. The determination process will be described.

  First, a channel selection process performed when the TSM is “N” will be described with reference to the flowchart of FIG. 9.

  First, in step S41, the CPU 101 determines whether or not an analog broadcast signal (NTSC signal) can be received on the designated physical channel P. If the CPU 101 determines in step S41 that analog broadcasting can be received on the designated physical channel P (step S41; Yes), the CPU 101 proceeds to step S42, and if determined not to be able to receive (step S41; No), step 101 Proceed to S43.

In step S42, the CPU 101 determines that the channel of the analog broadcast signal received on the designated physical channel P is a channel to be selected, and ends this process.
In step S43, the CPU 101 enters the “No Signal” state, and ends this process.

  Secondly, a channel selection process performed when the TSM is “A” will be described with reference to the flowchart of FIG.

  First, in step S51, the CPU 101 determines the designated physical channel P, the designated virtual main channel VM (ie, the user input main channel UM), and the designated virtual subchannel VS (ie, the user input sub channel). It is determined whether or not a digital broadcast signal (ATSC signal) of channel US) is receivable. In step S51, the CPU 101 determines that the digital broadcast signal of the designated physical channel P, the designated virtual main channel VM (= UM), and the designated virtual subchannel VS (= US) can be received (step S51). If it is determined that reception is not possible (step S51; No), the process proceeds to step S53.

In step S52, the CPU 101 selects a channel of a digital broadcast signal received through the designated physical channel P, the designated virtual main channel VM (= UM), and the designated virtual subchannel VS (= US). This process is terminated.
In step S53, the CPU 101 enters a “No Signal” state, and the process ends.

  Third, a channel selection process performed when the TSM is “NA” will be described with reference to the flowchart of FIG.

  First, in step S61, the CPU 101 determines whether or not an analog broadcast signal (NTSC signal) can be received on the designated physical channel P. When the CPU 101 determines in step S61 that an analog broadcast signal can be received on the designated physical channel P (step S61; Yes), the CPU 101 proceeds to step S62 and determines that the analog broadcast signal cannot be received (step S61; No). Proceed to step S63.

  In step S62, the CPU 101 determines the channel of the analog broadcast signal received on the designated physical channel P, and ends this process.

In step S63, the CPU 101 determines whether or not the channel map of the channel memory 104 includes the virtual main channel VM of the virtual main channel VM = the main channel UM input by the user. In step S63, if the CPU 101 determines that the VM of VM = UM is in the channel map (step S63; Yes), the CPU 101 proceeds to step S64. If it is determined that there is no VM (step S63; No), the CPU 101 proceeds to step S67.
In step S64, the CPU 101 determines whether or not the channel map includes one part channel of the virtual subchannel VS = subchannel US input by the user. If the CPU 101 determines in step S64 that there is a one-part channel of VS = US (step S64; Yes), it proceeds to step S65. If it is determined that there is no one part channel (step S65; No), it proceeds to step S66.

In step S65, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and sets the virtual subchannel VS as one part. Without this, this process ends.
In step S66, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and the smallest virtual channel in the TS received by the VM. The subchannel VS is determined as the virtual subchannel VS to be selected, and this process is terminated.

  In step S67, the CPU 101 determines whether or not the TS to be received has a one-part channel. If the CPU 101 determines that the received TS has one part channel (step S67; Yes), it proceeds to step S68, and if it determines that there is no one part channel (step S67; No), it proceeds to step S69.

In step S68, the CPU 101 determines that the smallest virtual main channel VM in the TS to be received is the virtual main channel VM to be selected, and does not set the virtual subchannel VS as one part, and ends this processing. To do.
In step S69, the CPU 101 determines the smallest virtual main channel VM in the TS to be received as the virtual main channel VM to be selected, and selects the smallest virtual subchannel VS in the TS received by the VM. The virtual subchannel VS to be determined is determined, and this process is terminated.

  Fourthly, a channel selection process performed when the TSM is “AN” will be described with reference to the flowchart of FIG.

First, in step S71, the CPU 101 determines whether or not the channel map of the channel memory 104 includes the virtual main channel VM of the virtual main channel VM = the main channel UM input by the user. If the CPU 101 determines in step S71 that there is a VM of VM = UM in the channel map (step S71; Yes), the CPU 101 proceeds to step S72, and if not (step S71; No), the process proceeds to step S75.
In step S72, the CPU 101 determines whether or not the channel map includes a two-part channel of the virtual subchannel VS = subchannel US input by the user. If the CPU 101 determines in step S72 that there is a two-part channel of VS = US (step S72; Yes), the process proceeds to step S73. If it is determined that there is no VS = US (step S72; No), the process proceeds to step S74.

In step S73, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and the smallest virtual channel in the TS received by the VM. The subchannel VS is determined as the virtual subchannel VS to be selected, and this process is terminated.
In step S74, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and sets the virtual subchannel VS as one part. Without this, this process ends.

  In step S75, the CPU 101 determines whether or not the received TS has a one-part channel. If the CPU 101 determines that the received TS has one part channel (step S75; Yes), the process proceeds to step S76, and if it is determined that there is no one part channel (step S75; No), the process proceeds to step S77.

In step S76, the CPU 101 determines the smallest virtual main channel VM in the TS to be received as the virtual main channel VM to be selected, and does not set the virtual subchannel VS as one part, and ends this processing. To do. For example, a specific example of selecting a physical channel P “18” and receiving a TS will be described with reference to the channel map of FIG. In the channel map of FIG. 8, the minimum virtual main channel VM of one part channel included in the TS received by the physical channel P “18” is “13”. Therefore, the CPU 101 determines the virtual main channel VM “13” as the virtual main channel VM of one part channel to be selected.
In step S77, the CPU 101 determines the smallest virtual main channel VM in the TS to be received as the virtual main channel VM to be selected, and sets the smallest virtual subchannel VS in the TS received by the virtual main channel VM. Then, the virtual subchannel VS to be selected is determined, and this processing is terminated. For example, a specific example of selecting a physical channel P “18” and receiving a TS will be described with reference to the channel map of FIG. 8 (assuming that there is no one-part channel of VM “13”). In the channel map of FIG. 8, the minimum virtual main channel VM of the two-part channel included in the TS received by the physical channel P “18” is “12”, and “1” is the virtual subchannel VS of the VM “12”. Exists. Therefore, the CPU 101 determines the virtual main channel VM “12” as the virtual main channel VM of the two-part channel to be selected, and selects the minimum virtual subchannel VS “1” included in the VM “12”. The virtual subchannel VS of the two-part channel is determined.

  Fifth, a channel selection process performed when the TSM is “BA” will be described with reference to the flowcharts of FIGS. 13 and 14.

  First, in step S81, the CPU 101 determines whether or not the channel map of the channel memory 104 includes the virtual main channel VM of the virtual main channel VM = the main channel UM input by the user. In step S81, if the CPU 101 determines that there is a VM of VM = UM in the channel map (step S81; Yes), the CPU 101 proceeds to step S82, and if not (step S81; No), the process proceeds to step S87.

  In step S82, the CPU 101 determines whether or not the channel map includes a virtual subchannel VS of the virtual subchannel VS = subchannel US input by the user. If the CPU 101 determines in step S82 that there is a VS of VS = US (step S82; Yes), the CPU 101 proceeds to step S83, and if not (step S82; No), the CPU 101 proceeds to step S84.

  In step S84, the CPU 101 determines whether or not there is a one-part channel in the smallest virtual main channel VM of the TS to be received. If the CPU 101 determines in step S84 that the smallest virtual main channel VM of the received TS has one part channel (step S84; Yes), the CPU 101 proceeds to step S85, and if determined not (step S84; No), step S86. Proceed to

In step S83, the CPU 101 determines the designated virtual main channel VM (ie, the main channel UM input by the user) as the virtual main channel VM to be selected, and designates the designated virtual subchannel VS (ie, the user). Is determined as a virtual subchannel VS to be selected, and this processing is terminated.
In step S85, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and sets the virtual subchannel VS as one part. Without this, this process ends.
In step S86, the CPU 101 determines the designated virtual main channel VM (that is, the main channel UM input by the user) as the virtual main channel VM to be selected, and includes the TS in the TS received by the virtual main channel VM. The smallest virtual subchannel VS is determined as the virtual subchannel VS to be selected, and this processing is terminated.

In step S87, the CPU 101 determines whether or not the virtual subchannel VS of the subchannel US input by the user is present in the channel map. If the CPU 101 determines in step S87 that there is a VS of VS = US (step S87; Yes), the CPU 101 proceeds to step S88. If not (step S87; No), the CPU 101 proceeds to step S89.
In step S89, the CPU 101 determines whether or not there is a one part channel in the smallest virtual main channel VM of the TS to be received. If the CPU 101 determines in step S89 that the smallest virtual main channel VM of the received TS has a one-part channel (step S89; Yes), the CPU 101 proceeds to step S90, and if determined not (step S89; No), step S91. Proceed to

In step S88, the CPU 101 determines the smallest virtual main channel VM in the TS to be received as the virtual main channel VM to be selected, and designates the designated virtual subchannel VS in the TS received by the virtual main channel VM. Is determined as the virtual subchannel VS to be selected, and this processing is terminated.
In step S90, the CPU 101 determines that the smallest virtual main channel VM in the TS to be received is the virtual main channel VM to be selected, and does not set the virtual subchannel VS as one part, and ends this processing. To do.
In step S91, the CPU 101 determines the smallest virtual main channel VM in the TS to be received as the virtual main channel VM to be selected, and sets the smallest virtual subchannel VS in the TS received by the virtual main channel VM. Then, the virtual subchannel VS to be selected is determined, and this processing is terminated.

According to the broadcast receiver 100 of the above embodiment, the physical channel, the virtual main channel, and the virtual subchannel of receivable channels are stored in the channel memory 104 (storage means), and the key input program 105a (key input) by the CPU 101 is stored. The first channel information for designating the channel by inputting only the virtual main channel and the predetermined symbol for separating the virtual main channel, the virtual main channel, and the virtual subchannel by inputting only the virtual main channel. Second channel information for designating, third channel information for designating a channel by inputting “0” as a virtual main channel, a predetermined symbol, and a virtual subchannel, a virtual main channel, a predetermined symbol, and a virtual sub As a channel By inputting a number other than “0”, the input of the fourth channel information specifying the channel is accepted, and by executing the determination program 105d (determination unit), the channel memory 104 (storage unit) is used. Channels corresponding to the first to fourth channel information input by execution of the key input program 105a (key input means) are determined. The digital broadcast channel includes a 1-part channel selected by designating only the virtual main channel and a 2-part channel selected by designating the virtual main channel and virtual subchannel. When the first channel information or the third channel information is input by the key input unit 9 (key input unit) by executing the (determining unit), one part channel is preferentially selected over the two part channel. In addition, when the second channel information or the fourth channel information is input, the two-part channel is preferentially selected over the one-part channel.
That is, when only the virtual main channel is input by the key input unit 9 or when “0” is input as the virtual main channel, the predetermined symbol, and the virtual sub-channel, the two-part channel of digital broadcasting is used. Since it is considered that the user desires the one-part channel, the digital broadcast one-part channel is preferentially selected with respect to the digital broadcast two-part channel. On the other hand, when a virtual main channel and a predetermined symbol are input by the key input unit 9, or when a number other than “0” is input as the virtual main channel, the predetermined symbol, and the virtual subchannel, the digital Since it is considered that the user desires the 2-part channel rather than the broadcast 1-part channel, the 2-part channel of the digital broadcast is preferentially selected with respect to the 1-part channel of the digital broadcast. Become. Therefore, it is possible to provide a broadcast receiver that can more suitably perform channel selection desired by the user in response to user input.

In addition, when the physical channel setting program 105b is executed by the CPU 101, channels corresponding to the first to fourth channel information input by the key input program 105a (key input means) are stored in the channel memory 104 (storage means). In this case, the physical channel of the corresponding channel is set as a physical channel to be selected, and the channel corresponding to the first to fourth channel information input by the key input program 105a (key input means) is the channel memory. If not stored in 104 (storage means), the virtual main channel of the first to fourth channel information input by the key input program 105a (key input means) is set as a physical channel to be selected. Also, the execution of the update program 105c selects the physical channel set by the execution of the physical channel setting program 105b, and the channel memory 104 (storage means) is based on the virtual main channel and virtual subchannel of the acquired channel. Updated.
Therefore, the channel selection desired by the user is more suitably performed in response to the user input.

Furthermore, when the third channel information is input by the key input unit 9 (key input means) by executing the determination program 105d, the analog broadcast channel is preferentially selected over the digital broadcast channel.
That is, when a virtual main channel, a predetermined symbol, and 0 as a virtual subchannel are input, an analog broadcast channel is preferentially selected with respect to a digital broadcast channel. Therefore, the channel selection desired by the user is more suitably performed in response to the user input.

The present invention is not limited to the above embodiment, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, the broadcast receiver is not limited to the one corresponding to the cable television broadcast system exemplified in the above embodiment, and may be a broadcast receiver corresponding to various broadcast systems adopted in each region.

FIG. 2 is a block diagram illustrating a main configuration of a broadcast receiver according to the first embodiment. It is a figure which illustrates the channel map of a channel memory. It is a flowchart which shows the physical channel determination process performed when 1st channel information is input. It is a flowchart which shows the physical channel determination process performed when 2nd channel information is input. It is a flowchart which shows the physical channel determination process performed when 3rd channel information is input. It is a flowchart which shows the physical channel determination process performed when 4th channel information is input. It is a figure which illustrates VCT received in execution of an update program. It is a figure which illustrates the channel map of the channel memory updated by execution of the update program. It is a flowchart which shows the channel selection process performed when TSM is "N". It is a flowchart which shows the channel selection process performed when TSM is "A". It is a flowchart which shows the channel selection process performed when TSM is "NA". It is a flowchart which shows the channel selection process performed when TSM is "AN". It is a flowchart which shows the channel selection process performed when TSM is "BA". It is a flowchart which shows the channel selection process performed when TSM is "BA".

Explanation of symbols

100 Broadcast receiver 9 Key input section (key input means)
101 CPU (key input means, physical channel setting means, update means, determination means)
104 channel memory (storage means)
105a Key input program (key input means)
105b Physical channel setting program (physical channel setting means)
105c Update program (update means)
105d Determination program (determination means)

Claims (4)

In a broadcast receiver capable of receiving digital broadcasts and analog broadcasts,
Storage means for storing a physical channel, a virtual main channel, and a virtual subchannel of receivable channels;
First channel information for designating a channel by inputting only a virtual main channel, and a second channel for designating a channel by inputting predetermined symbols for separating the virtual main channel, virtual main channel, and virtual subchannel Information, a virtual main channel, the predetermined symbol, and a third channel information specifying a channel by inputting “0” as a virtual subchannel, a virtual main channel, “0” as the predetermined symbol, and a virtual subchannel. Key input means for receiving input of fourth channel information for designating a channel by inputting a number other than "
Determining means for determining a channel corresponding to the first to fourth channel information input by the key input means using the storage means;
With
The channels of digital broadcasting include a 1-part channel that is selected by designating only the virtual main channel and a 2-part channel that is selected by designating the virtual main channel and virtual sub-channel,
The determining means includes
When the first channel information or the third channel information is input by the key input means, the first part channel is preferentially selected over the two part channel, and the second channel information or the second channel information is selected. A broadcast receiver characterized by preferentially selecting the two-part channel over the one-part channel when 4-channel information is input. When the virtual main channel corresponding to the first to fourth channel information input by the key input means is stored in the storage means, the physical channel for selecting the physical channel of the corresponding virtual main channel If the virtual main channel corresponding to the first to fourth channel information input by the key input means is not stored in the storage means, the first to first input by the key input means Physical channel setting means for setting the virtual main channel of the fourth channel information as a physical channel to be selected;
An update unit that selects a physical channel set by the physical channel setting unit and updates the storage unit based on a virtual main channel and a virtual subchannel of the acquired channel;
The broadcast receiver according to claim 1, comprising:   3. The determination unit according to claim 1, wherein, when the third channel information is input by the key input unit, the determination unit preferentially selects an analog broadcast channel over a digital broadcast channel. 4. Broadcast receiver. In a broadcast receiver capable of receiving digital broadcasts and analog broadcasts,
Storage means for storing a physical channel, a virtual main channel, and a virtual subchannel of receivable channels;
First channel information for designating a channel by inputting only a virtual main channel, and a second channel for designating a channel by inputting predetermined symbols for separating the virtual main channel, virtual main channel, and virtual subchannel Information, a virtual main channel, the predetermined symbol, and a third channel information specifying a channel by inputting “0” as a virtual subchannel, a virtual main channel, “0” as the predetermined symbol, and a virtual subchannel. Key input means for receiving input of fourth channel information for designating a channel by inputting a number other than "
When the virtual main channel corresponding to the first to fourth channel information input by the key input means is stored in the storage means, the physical channel for selecting the physical channel of the corresponding virtual main channel If the virtual main channel corresponding to the first to fourth channel information input by the key input means is not stored in the storage means, the first to first input by the key input means Physical channel setting means for setting the virtual main channel of the fourth channel information as a physical channel to be selected;
An update unit that selects a physical channel set by the physical channel setting unit and updates the storage unit based on a virtual main channel and a virtual subchannel of the acquired channel;
Determining means for determining a channel corresponding to the first to fourth channel information input by the key input means using the storage means updated by the updating means;
With
The channels of digital broadcasting include a 1-part channel that is selected by designating only the virtual main channel and a 2-part channel that is selected by designating the virtual main channel and virtual sub-channel,
The determining means includes
When the first channel information or the third channel information is input by the key input means, the first part channel is preferentially selected over the two part channel, and the second channel information or the second channel information is selected. When 4-channel information is input, the 2-part channel is preferentially selected over the 1-part channel,
A broadcast receiver characterized by preferentially selecting an analog broadcast channel over a digital broadcast channel when the third channel information is input by the key input means.

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