JP2010114707A - Rf conversion device, and rf conversion method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an RF conversion device and an RF conversion method, which help a user to use an analogue television and a remote controller in the prior art with no change in usability for viewing digital broadcasting and also allow the user to make the setting easily. <P>SOLUTION: A remote control signal from an A remote controller 104 for an analogue television 103 is received and the received remote control signal is analyzed. A physical channel number of analogue broadcasting which corresponds to the remote control channel signal contained in the remote control signal is selected. A physical channel number of the analogue broadcasting is set. A physical channel number of the digital broadcasting corresponding to the physical channel number of the selected analogue broadcasting is selected. The digital broadcasting tuned to a physical channel number of the selected digital broadcasting is converted to the RF signal of a frequency corresponding to the set physical channel number of the analogue broadcasting for output thereof. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an RF conversion apparatus and an RF conversion method for receiving a digital television broadcast and converting it into a signal equivalent to an analog broadcast.

  Television broadcasting (hereinafter referred to as TV broadcasting) is shifting from analog to digital worldwide. In Japan, terrestrial digital broadcasting has started in December 2003, and simulcast broadcasting is currently performed in analog and digital formats. Simulcast broadcasting means that one broadcast station broadcasts the same program simultaneously with different broadcast waves.

In the terrestrial broadcast channel, the frequency band from 90 MHz to 770 MHz is divided every 6 MHz, and each divided band is set as one channel.
In analog broadcasting, video signals and audio signals are modulated and transmitted in accordance with the NTSC (National Television Standards Committee) system. A standard television 1 program service is provided in a transmission band of 6 MHz per channel.
On the other hand, in terrestrial digital broadcasting, signals modulated by OFDM (Orthogonal Frequency Division Multiplexing) are transmitted. One high definition (HD) program or standard television (SD) with a transmission band of 6 MHz per channel
Definition) Simultaneous service of 3 programs and data broadcasting.

Channels 1 to 12 are called VHF (Very High Frequency) bands and are used for terrestrial analog broadcasting.
Channels 13 to 62 are called UHF (Ultra High Frequency) bands, and terrestrial analog broadcasting and terrestrial digital broadcasting are mixed. Different channels are assigned even in simulcast broadcasting so that different broadcast waves do not interfere.
Terrestrial analog broadcasting has started broadcasting in the VHF band, but after that, a relay station is provided in an area where the radio wave condition is bad, converted into the UHF band, and retransmitted.
Therefore, the same program is broadcast on different channels depending on the region.

On the other hand, channel keys 1 to 12 are generally used for a remote controller of a television broadcast receiver (hereinafter referred to as a television). This is because it is matched with the VHF channel and facilitates key input.
Therefore, when receiving with UHF, it is common for a TV with a region code to replace channels 1 to 12 input from the channel key of the remote controller with UHF channels to facilitate channel switching with the remote controller. Has been done.
The channel input from the remote control channel key at this time is called a remote control channel, and the actually received UHF channel is called a physical channel.
Since terrestrial digital broadcasting is also transmitted in the UHF band, processing for converting a remote control channel into a physical channel is performed in the television.

In Japan, the end of analog broadcasting is scheduled for July 2011. When analog broadcasting ends, channels 1 to 12 and 53 to 62 become vacant channels, and use for purposes other than television broadcasting is being studied.
However, when analog broadcasting ends, analog television that is still used by many users cannot receive television broadcasting. In that case, the user is forced to replace the digital TV. Since digital TV is more expensive than analog TV, it is difficult for all users to replace it with digital TV.
In addition, it is more difficult to replace all analog TVs in each home with digital TVs.
Furthermore, there is a sense of resistance to disposing of unbroken analog TV from the viewpoint of effective use of resources.

In view of this, a digital tuner device that converts a digital broadcast into an analog video signal of a D terminal or an RCA terminal and outputs the same so that the analog television can be effectively used is commercially available.
However, when such a digital tuner device is connected to an analog television for television viewing, it is necessary to perform input switching instead of the conventional channel switching for the analog television. That is, for an analog TV, since the input is at the D terminal or the RCA terminal, the setting of the analog TV must be switched to an external input.

In addition, when performing channel switching, it is necessary to perform channel switching operation on the digital tuner device using the remote controller of the digital tuner device.
For this reason, there is a problem that the same operation as a conventional analog television cannot be performed and the operation is difficult to understand.
Further, since it is necessary to prepare both a remote controller for analog TV and a remote controller for digital tuner device, there is a problem that erroneous operation due to a mistake in the remote controller is likely to occur.

Therefore, an RF conversion device is proposed that is disposed between a digital tuner device and an analog television and converts an analog video signal output from the digital tuner device into an analog RF (Radio Frequency) signal (for example, Patent Document 1). .
The RF conversion device according to Patent Document 1 includes a wireless remote controller, and converts a received wireless remote control signal into an infrared signal for a digital tuner device and outputs it, thereby realizing a channel switching operation of the digital tuner device. .

In addition, an RF conversion device is disclosed that is disposed in the front stage (antenna side) of an analog television, receives an RF signal in which digital broadcast and analog broadcast are mixed, converts the RF signal into an analog RF signal, and outputs the analog RF signal (for example, Patent Documents). 2).
In the RF conversion device according to Patent Document 2, when the selected channel band RF signal is a digital broadcast, the digital broadcast is converted into an analog television by converting it into an analog RF signal and outputting it to the same channel frequency band. It becomes possible to see in.
JP 2007-174356 A JP 2003-224780 A

  However, in Patent Document 1, an operation on the digital tuner device, which is the front stage of the RF conversion device, is considered, but an operation on the subsequent analog television is not considered. That is, the analog RF signal output from the RF converter is assumed to be output to a fixed channel. Therefore, in order to use the RF converter, it is necessary to match the channel of the analog television with the fixed channel set by the RF converter in advance. Therefore, the above-described problems that the operation is difficult to understand and that an erroneous operation is likely to occur are not sufficiently solved.

  Patent Document 2 discloses a method of replacing a channel through which digital broadcasting is transmitted with an analog wave as described above. As described above, since digital broadcasting and analog broadcasting are broadcast on different physical channels, in order to view a channel converted from digital to analog by the method described in Patent Document 2, the user must set analog television. There was a need to do. Specifically, since analog TV only stores physical channels for analog broadcasting, it is necessary for the user to set up to be able to receive physical channels for digital broadcasting and to support remote control channels. there were.

An object of the present invention is to provide an RF conversion device and an RF conversion method that allow a user to view a digital broadcast by using a conventional analog television and a remote controller as usual.
In addition, a second problem of the present invention is to provide an RF conversion device and an RF conversion method that can simplify a user's setting operation.

  An RF conversion apparatus according to a first aspect of the present invention includes a physical channel association unit that associates an analog broadcast physical channel with a digital broadcast physical channel, and an analog region that stores an analog broadcast physical channel for each region. Code storage means, digital broadcast receiving means for receiving digital broadcasts, decoding means for decoding the digital broadcasts received by the broadcast receiving means, and video signals and audio signals decoded by the decoding means as analog broadcast video Signal converting means for converting into a signal and an audio signal, and an RF output for converting the analog broadcast format video and audio signal converted by the signal converting means into an analog RF signal having a frequency corresponding to a physical channel of the analog broadcast Means.

  The RF conversion method according to the second aspect of the present invention relates to the analog broadcast physical channel and the digital broadcast physical channel, stores the analog broadcast physical channel for each region, receives the digital broadcast, The received digital broadcast is decoded, the decoded video signal and audio signal are converted into an analog broadcast format video signal and audio signal, and the converted analog broadcast format video and audio signal correspond to the analog broadcast physical channel. It is characterized in that it is converted into an analog RF signal of frequency and output.

  According to the present invention, a user can view a digital broadcast by using a conventional analog TV and a remote controller as usual.

The best mode for carrying out the present invention will be described below with reference to the drawings.
In the following description, specific numerical values, configurations, operations, and the like are shown and described, but these can be changed as appropriate.

(First embodiment)
FIG. 1 is a diagram showing a form in which a first embodiment of an RF conversion apparatus according to the present invention is used.
The antenna 101 receives terrestrial digital broadcast and transmits the received digital broadcast RF signal to the RF converter 102.
The RF converter 102 receives a digital RF signal via the antenna 101, performs digital decoding, and then modulates and outputs the analog RF signal.
The analog television 103 is an existing analog television that can receive only analog broadcasting. The analog television 103 is connected to the RF conversion device 102 to input an analog RF signal output from the RF conversion device 102 and display a television broadcast.

  An analog TV remote controller (hereinafter referred to as “A remote controller”) 104 is a remote control device attached to the analog TV 103, and transmits an instruction of the user to the analog TV 103 by emitting infrared rays. Here, the user instruction represents channel selection, volume adjustment, and the like. The remote controller (remote controller) is an abbreviation for remote controller, and is an operation input device for remotely operating the main device (here, the analog television 103). The A remote controller 104 of this embodiment uses infrared rays as described above, but may use radio waves.

  The RF converter 102 receives the infrared signal emitted from the A remote controller 104, selects a digital broadcast channel in accordance with the channel instructed to be selected by the analog television 103, converts it to an analog broadcast channel, and outputs it. To do.

FIG. 2 is a block diagram illustrating details of the RF conversion apparatus 102 according to the first embodiment.
The RF conversion apparatus 102 according to this embodiment includes a light receiving unit 201, a remote control code analyzing unit 202, an analog television (hereinafter referred to as ATV) remote control code table 203, a digital / analog conversion table 204, and an analog region code table 205. The RF conversion apparatus 102 includes a digital tuner 206, a decoding unit 207, a down-conversion unit 208, an RF output unit 209, and the like.

The light receiving unit 201 is remote control receiving means for receiving a remote control signal. When the light receiving unit 201 receives a remote control signal emitted from the A remote controller 104, the light receiving unit 201 converts the received light into an electric signal and transmits it to the remote control code analyzing unit 202.
The remote control code analysis unit 202 analyzes the remote control code of the remote control signal received by the light receiving unit 201. The remote control code analysis unit 202 refers to an ATV remote control code table 203 described later when analyzing the remote control code.

The ATV remote control code table 203 is remote control code storage means that stores remote control codes for a plurality of types of analog televisions. Specifically, a code table of each manufacturer of analog TV is stored.
The digital-analog conversion table 204 functions as a physical channel association unit that associates physical channels of analog broadcasting with physical channels of digital broadcasting.

The analog region code table 205 functions as an analog region code storage unit that stores physical channels of analog broadcasting for each region.
The digital tuner 206 functions as a digital broadcast receiving unit that receives and demodulates a digital broadcast RF signal input from the antenna 101.

The decoding unit 207 decodes (decodes) the compressed digital broadcast received by the digital tuner 206, transmits it to the down-conversion unit 208, and outputs it to the D terminal.
The down-conversion unit 208 functions as a signal conversion unit that performs conversion to reduce the image size of the video signal decoded by the decoding unit 207 to the analog broadcast format size. Also, the audio signal decoded by the decoding unit 207 is converted into an analog broadcast format audio signal.

  The RF output unit 209 converts (modulates) the analog broadcast format video and audio signals converted by the down-conversion unit 208 into analog RF signals having a frequency corresponding to the physical channel of the analog broadcast, and outputs the analog RF signal.

Next, the operation of the RF conversion device of this embodiment will be described.
The light receiving unit 201 receives the signal from the A remote control 104 and sends a signal to the remote control code analysis unit 202. Here, the remote control signal represents a signal in a general infrared remote control signal format. The remote control signal is composed of a custom code representing a manufacturer and a data code representing a command.

  The remote control code analysis unit 202 extracts a custom code in the transmitted remote control signal. Further, the remote control code analysis unit 202 analyzes the data code with reference to the ATV remote control code table 203 using the custom code as an argument. The analyzed data code is command-converted according to the command system in the RF converter 102 and output.

Here, the initial setting will be described.
First, the user inputs an analog region code to the analog television 103 as an initial setting. This operation is a function implemented in a general analog television 103, and is performed to associate a remote control channel with a physical channel.
The analog region code input by the user is also sent to the RF conversion device 102 as a remote control signal, and command-converted by the remote control code analysis unit 202.
The command-converted analog area code is sent to the digital / analog conversion table 204 and the analog area code table 205, where the area code is set.

Next, an operation when the user issues a channel instruction in the usage state after the initial setting will be described.
When the user presses the remote control channel key, a remote control signal indicating a channel is transmitted from the A remote control 104. As described above, the remote control code analysis unit 202 also converts the remote control signal for channel instruction into a command and outputs it. The commanded remote control channel is transmitted to the analog area code table 205.

  The analog region code table 205 selects an analog physical channel corresponding to the remote control channel according to a preset region code. The analog region code table 205 transmits the analog physical channel number to the digital / analog conversion table 204. Further, the analog region code table 205 transmits the analog physical channel frequency setting corresponding to the analog physical channel to the RF output unit 209.

  The digital / analog conversion table 204 selects a digital physical channel from an analog physical channel number according to a preset region code. The digital / analog conversion table 204 transmits the digital physical channel number to the decoding unit 207. Further, the digital / analog conversion table 204 transmits a digital physical channel frequency setting corresponding to the digital physical channel number to the digital tuner 206.

  The digital tuner 206 tunes according to the digital physical channel frequency and selects a channel. Further, demodulation is performed to convert an RF signal input from the antenna 101 into a TS (transport stream) signal. The TS signal converted by the digital tuner 206 is input to the decoding unit 207.

The decoding unit 207 decodes the TS signal and converts it into a video signal and an audio signal. The video signal here is generally an HDTV (High Definition Television) video signal. In digital broadcasting, SD (Standard Definition) is also set, and it is used in multiplex broadcasting or the like, but the usage frequency is not high. The video signal and audio signal decoded by the decoding unit 207 are output to the outside using a D terminal or the like.
The video signal and audio signal decoded by the decoding unit 207 are input to the down-conversion unit 208 and converted into an NTSC signal. The NTSC signal is input to the RF output unit 209.

  The RF output unit 209 modulates the NTSC signal into an analog RF signal. The RF frequency at this time is set according to the set value of the analog physical channel frequency transmitted from the analog region code table 205.

FIG. 3 is a diagram illustrating an example of conversion from digital to analog physical channels.
As described in the background art section, since terrestrial digital broadcasting is modulated by OFDM, signals are transmitted in a 6 MHz band. On the other hand, in terrestrial analog broadcasting, video signals and audio signals are transmitted at different frequencies within a 6 MHz band.
As shown in FIG. 3, completely different channels are set for the digital physical channel and the analog physical channel.
FIG. 3 shows an example of a local area where analog broadcasting is converted into a UHF band by a relay station. In the region where reception is performed in the VHF band, the same channels 1 to 12 as the remote control channel are set as analog physical channels.

Many conventional analog televisions are provided with a function for performing automatic channel setting in which a remote control channel and an analog physical channel are linked for each region.
When regional setting is performed on the analog television 103, the RF converter 102 also receives the remote control signal.
When the RF conversion apparatus 102 receives a remote control signal for setting the area for the analog television 103, the RF conversion apparatus 102 sets an analog physical channel in accordance with the area where the automatic channel of the analog TV 103 is set.

On the other hand, since digital broadcasting also has different physical channels for each region, the digital physical channel is set according to the region setting.
Since digital broadcast and analog broadcast are performed by simulcast broadcasting, there is a one-to-one physical channel of the same broadcasting station. Each physical channel setting is stored in correspondence in the digital / analog conversion table 204.

  As described above, according to the first embodiment, a user can view a digital broadcast simply by performing the same channel selection operation as a conventional one using a familiar remote controller used in a conventional analog television. It becomes possible.

(Second Embodiment)
FIG. 4 is a block diagram showing a second embodiment of the RF conversion device.
In addition, the same code | symbol is attached | subjected to the part which fulfill | performs the same function as 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted suitably.
The priority setting unit 401 sets channel setting priorities. Specifically, the priority setting unit 401 switches and sets whether to give priority to a channel selection channel for analog broadcasting or channel selection channel for digital broadcasting. The result set by the priority setting unit 401 is transmitted to the remote control code analysis unit 202.

In analog broadcasting and digital broadcasting, not only physical channels but also remote control channels may be different. For example, the remote control channel of the broadcasting station D is 10 channels for analog broadcasting, but 5 channels for digital broadcasting.
The priority setting unit 401 switches the setting of digital broadcast priority / analog broadcast priority (or ON / OFF) using, for example, a slide switch. The digital broadcast priority / analog broadcast priority setting set by the priority setting unit 401 is sent to the remote control code analysis unit 202 to change the channel selection operation of the remote control code analysis unit 202.
If you want to watch the broadcasting station D with 10 channels and feel like a conventional analog TV, set the priority setting unit 401 to analog broadcasting priority (or OFF) to select the 10 channels of the remote control signal. Select broadcasting station D.

  Also, if you want to watch the broadcasting station D on 5 channels according to the settings of the digital TV, if you set the priority setting unit 401 to digital broadcasting priority (or ON), broadcast to the 5 channel selection of the remote control signal Select station D.

  As described above, by using the method of the second embodiment, it is possible to change the operation for the remote control operation according to the user's preference for the channel selection operation, and the convenience can be improved.

(Third embodiment)
FIG. 5 is a block diagram showing a third embodiment of the RF conversion device.
In the third embodiment, setting of a remote control channel is performed using a GUI (Graphic User).
Interface) is customizable on the interface.
In addition, the same code | symbol is attached | subjected to the part which fulfill | performs the same function as 2nd Embodiment mentioned above, and the overlapping description is abbreviate | omitted suitably.

In the third embodiment, a custom setting unit 501 is provided instead of the priority setting unit 401 in the second embodiment, and a synthesis unit 502 is provided between the down-conversion unit 208 and the RF output unit 209.
The custom setting unit 501 changes the association between the remote control channel signal and the analog broadcast physical channel number according to an instruction from the user. The setting contents of the custom setting unit 501 are sent to the remote control code analysis unit 202. The custom setting unit 501 also sends a GUI screen for setting the remote control channel to the combining unit 502.
The synthesis unit 502 synthesizes the video signal sent from the down-conversion unit 208 and the GUI screen sent from the custom setting unit 501.

Next, the operation of the RF conversion apparatus 102 according to the second embodiment will be described.
When a specific key of a remote controller (not shown) for the RF conversion device 102 is pressed, a signal corresponding to the specific key is sent from the remote control code analysis unit 202 to the custom setting unit 501.
The custom setting unit 501 creates a GUI screen for setting the remote control channel and sends it to the combining unit 502.
The combining unit 502 combines the video signal and the GUI screen, and outputs a combined image to the RF output unit 209.
The user sets the remote control channel by operating the remote control while viewing the GUI screen.

When setting the remote control channel, the setting value of the automatic channel setting is displayed on the GUI, and the user moves the cursor to the value portion to be changed and changes the value.
The result set by the user is held in the custom setting unit 501. The custom setting unit 501 can change the channel setting of the remote control code analysis unit 202 by setting the remote control code analysis unit 202.

  As described above, when the method of the third embodiment is used, the RF converter according to the present invention can be used even when the user manually adjusts the channel setting of the analog television.

(Fourth embodiment)
In the fourth embodiment, the function of the RF converter according to the present invention is included in a digital television.
FIG. 6 is a diagram illustrating a form in which the digital television according to the fourth embodiment is used.
In addition, the same code | symbol is attached | subjected to the part which fulfill | performs the same function as 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted suitably.

The digital television 601 receives a digital broadcast and displays a decoded digital image.
The D remote controller 602 is a remote controller for the digital television 601 and performs channel selection operation, volume adjustment, and the like of the digital television 601.
In addition, the digital television 601 has a function of converting a digital image into an analog image, performing RF modulation, and outputting the analog image. This output is an analog RF output. The analog RF output is input to the RF input terminal of the analog television 103.
The A remote control 104 performs channel selection operation, volume adjustment, and the like of the analog television 103. The remote control signal of the A remote control 104 is also received by the digital television 601.
The digital television 601 performs analog RF output in accordance with the channel selection operation of the analog television 103.

FIG. 7 is a block diagram of the digital television 601.
In FIG. 7, only the part related to the present invention is shown in a simplified manner. Hereinafter, only a different part from FIG. 2 of 1st Embodiment is demonstrated.
The splitter 701 receives the digital RF signal and distributes the digital RF signal to the first tuner 702 and the second tuner 703.
When a channel selection operation is performed with the D remote controller 602, channel selection is performed with the first tuner 702 or the second tuner 703, and a video signal is sent to the display device 704 via the decoding unit 207. A video is displayed.

On the other hand, when the channel selection operation is performed by the A remote controller 104, the channel selection is performed by the first tuner 702 or the second tuner 703, and the decoding unit 207, the down-conversion unit 208, and the RF output unit 209 are selected. And output as analog RF.
Adjustment of which of the two tuners (702, 703) is used is performed by the adjustment unit 705.
In general, the functions of the remote control code analysis unit 202 and the adjustment unit 705 are often configured by a microcomputer (not shown) and processed by software.
When the analog television 103 is not used, two tuners (702, 703) can be used on the digital television 601 and applications such as two-screen display can be used.

As described above, when the method of the fourth embodiment is used, the digital tuner is shared by both the digital television 601 and the analog television 103, so that the digital broadcast can be viewed by both the digital television 601 and the analog television 103.

(Deformation)
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the scope of the present invention.
(1) In the first to third embodiments, an example in which one digital tuner is provided has been described. For example, a plurality of digital tuners may be provided to simultaneously output RF signals of all channels. In this case, the RF converter may omit a receiving unit (light receiving unit) that receives a remote control signal. In addition, digital broadcasting can be viewed on a plurality of analog televisions using a single RF converter.

(2) In the fourth embodiment, the example in which the RF conversion device of the present invention is included in the digital television has been described. However, the present invention is not limited to this, and for example, the RF conversion device of the present invention is applied to a digital broadcast recording device such as a hard disk recorder device. May be included.

  Note that the first embodiment to the fourth embodiment and modifications may be used in appropriate combination, but detailed description thereof is omitted. Further, the present invention is not limited by the embodiments described above.

It is a figure which shows the form using 1st Embodiment of RF conversion apparatus by this invention. It is the block diagram which showed the detail of RF conversion apparatus 102 of 1st Embodiment. It is a figure which shows the example converted from a digital to an analog physical channel. It is the block diagram which showed 2nd Embodiment of RF conversion apparatus. It is the block diagram which showed 3rd Embodiment of RF conversion apparatus. It is a figure which shows the form using the digital television of 4th Embodiment. 1 is a block diagram of a digital television 601. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Antenna 102 RF converter 103 Analog television 104 A Remote control 201 Light receiving part 202 Remote control code analysis part 203 ATV remote control code table 204 Digital analog conversion table 205 Analog area code table 206 Digital tuner 207 Decoding part 208 Down-conversion part 209 RF output part 401 Priority setting unit 501 Priority setting unit 502 Composition unit 601 Digital television 602 D remote control 701 Splitter 702 First digital tuner 703 Second digital tuner 704 Display device 705 Adjustment unit

Claims (7)

Physical channel association means for associating a physical channel of analog broadcasting with a physical channel of digital broadcasting;
Analog region code storage means for storing physical channels of analog broadcasting for each region;
A digital broadcast receiving means for receiving a digital broadcast;
Decoding means for decoding the digital broadcast received by the broadcast receiving means;
A signal conversion means for converting the video signal and the audio signal decoded by the decoding means into an analog broadcast format video signal and an audio signal;
RF output means for converting an analog broadcast format video and audio signal converted by the signal conversion means into an analog RF signal having a frequency corresponding to a physical channel of the analog broadcast and outputting the analog broadcast signal;
An RF conversion device comprising: Remote control receiving means for receiving a remote control signal from a remote control for analog television;
Remote control code analyzing means for analyzing the remote control signal received by the remote control receiving means;
With
The analog region code storage means selects the analog broadcast physical channel number corresponding to the remote control channel signal included in the remote control signal and sets the analog broadcast physical channel number in the RF output means,
The physical channel associating means selects a digital broadcast physical channel number corresponding to the analog broadcast physical channel number selected by the analog region code storage means,
The digital broadcast receiving means tunes the physical channel number of the digital broadcast selected by the physical channel association means,
The RF output means outputs an RF signal having a frequency corresponding to the physical channel number of the analog broadcast set by the analog area code storage means for the digital broadcast received by the digital broadcast receiving means. ,
The RF conversion apparatus according to claim 1. Remote control code storage means for storing remote control codes of multiple types of analog TVs,
The remote control code analyzing means corresponds to a plurality of types of analog television remote control signals by using a remote control code stored in the remote control code storage means;
The RF converter according to claim 2. Providing priority setting means for switching whether the remote control channel signal included in the remote control signal and the physical channel number of the analog broadcast are performed with priority given to analog broadcast or digital broadcast;
The RF conversion device according to claim 2 or 3, wherein Custom setting means for changing the correspondence between the remote control channel signal included in the remote control signal and the physical channel number of the analog broadcast according to an instruction by the user;
The RF conversion device according to claim 2 or 3, wherein Corresponding analog broadcast physical channel and digital broadcast physical channel,
Remember the analog broadcast physical channel for each region,
Receive digital broadcasts,
Decode the received digital broadcast,
The decoded video signal and audio signal are converted into an analog broadcast format video signal and audio signal,
Converting the converted analog broadcast format video and audio signal into an analog RF signal having a frequency corresponding to the analog broadcast physical channel, and outputting the analog RF signal;
An RF conversion method characterized by the above. Receive remote control signal from analog TV remote control,
Analyzing the received remote control signal,
Selecting the analog broadcast physical channel number corresponding to the remote control channel signal included in the remote control signal and setting the analog broadcast physical channel number;
Select the digital broadcast physical channel number corresponding to the selected analog broadcast physical channel number,
The digital broadcast received by selecting the physical channel number of the selected digital broadcast is converted into an RF signal having a frequency corresponding to the set physical channel number of the analog broadcast, and output.
The RF conversion method according to claim 6.

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