Digital broadcasting receiver

Abstract

To provide a digital broadcast receiver for which a user can easily understand settings of the receiver.SOLUTION: In a digital broadcast receiver having a control unit and a display processing unit, the control unit obtains a reception state value indicating whether a reception state of a broadcast signal of a channel being selected is good or bad, determines a broadcasting system of the channel, and converts the reception state value based on a desired stabile reception state value necessary for stable reception of the broadcast system corresponding to the determined broadcasting system. The display processing unit causes the display unit to display the converted reception state value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a digital broadcast receiving device. [Background technology]

[0002] 2. Description of the Related Art Digital broadcast receiving devices are known that detect malfunctions caused by factors that exist regardless of the installation state (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2010-252166 A Summary of the Invention [Problem to be solved by the invention]

[0004] The required reception strength for stable reception is different between 2K broadcasting and 4K8K broadcasting. Therefore, the current reception strength may be sufficient for 2K broadcasting but insufficient for 4K8K broadcasting, which can be confusing for users when setting up the receiver (especially setting the antenna direction).

[0005] An object of one aspect of the present invention is to provide a digital broadcast receiving device that allows a user to easily understand settings for the receiver. [Means for solving the problem]

[0006] A digital broadcast receiving device according to one embodiment of the present invention is a digital broadcast receiving device comprising a control unit and a display processing unit, wherein the control unit acquires a reception state value indicating whether the reception state of the broadcast signal of a channel currently being selected is good or bad, determines the broadcasting method of the channel, and converts the reception state value based on a required stable reception state value required for stable reception of the broadcasting method corresponding to the determined broadcasting method, and the display processing unit displays the converted reception state value on the display unit.

[0007] A digital broadcast receiving device according to one embodiment of the present invention is a digital broadcast receiving device comprising a control unit and a display processing unit, wherein the control unit selects a broadcast signal for each of a plurality of broadcast signals, acquires the broadcasting method of the selected broadcast signal, acquires a reception state value indicating whether the reception state of the selected broadcast signal is good or bad, converts the reception state value based on a required stable reception state value required for stable reception of the broadcasting method corresponding to the broadcasting method, and the display processing unit displays the converted reception state value on a display unit. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating an example of a configuration of a digital broadcast receiving device according to an embodiment; [Diagram 2] 13 is an example of a flowchart of a display process of reception quality based on a broadcasting system according to an embodiment. [Diagram 3] 13 is an example of a display screen for displaying reception quality based on a broadcasting system. [Figure 4] 13 is an example of a flowchart of a display process of reception strength based on a broadcasting system according to an embodiment. [Diagram 5] 13 is an example of a display screen for displaying reception strength based on a broadcasting system. [Figure 6] 13 is an example of a flowchart of a display process of reception quality and reception strength based on the broadcast system of each of a plurality of satellite numbers (in the case of BS right-hand rotation) according to an embodiment. [Figure 7] 13 is an example of a display screen for displaying reception quality and reception strength based on the broadcasting system of each of a plurality of satellite numbers. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments will be described with reference to the drawings. In the drawings, the same or equivalent elements are designated by the same reference numerals, and duplicated explanations will be omitted.

[0010] FIG. 1 is a diagram illustrating an example of a configuration of a digital broadcast receiving device according to an embodiment.

[0011] The digital broadcast receiving device 100 has a main system unit 10, a speaker 60, and a display unit 70. The digital broadcast receiving device 100 is also connected to an external antenna unit (receiver) 80. The digital broadcast receiving device is, for example, a television receiver. The antenna unit 80 has an antenna 82 and a booster 84. The antenna 82 receives a broadcast signal and transmits the received broadcast signal to the booster 84. The booster 84 amplifies the broadcast signal of a predetermined frequency band supplied from the antenna 82.

[0012] The main system section 10 processes a television broadcast signal input from an antenna section 80, outputs the audio represented by the broadcast signal from a speaker 60, and outputs the video represented by the broadcast signal from a display section 70. The main system section 10 includes a control section 12, a tuner section 14, a demodulation section 16, a descrambling and demuxing section 18, an audio processing section 20, a display processing section 24, a storage section 26, and a flash memory 28.

[0013] The control unit 12 performs overall control of each unit of the digital broadcast receiving device 100. The control unit 12 identifies the broadcasting system of the currently selected channel based on TMCC (Transmission and Multiplexing Configuration and Control) information obtained from the selected digital broadcast channel. The control unit 12 obtains a C / N (received signal quality) value of the currently selected channel from the demodulation unit 16. The control unit 12 can also obtain a reception strength (received signal strength) value of the currently selected channel from the tuner unit 14. The C / N (received signal quality) value and the reception strength (received signal strength) value are examples of reception state values ​​that indicate the quality of the reception state of a broadcast signal.

[0014] The tuner unit 14 selects a transmission channel of a broadcast signal received from an external antenna unit 80 .

[0015] The demodulation unit 16 demodulates the broadcast signal obtained from the tuner unit 14 to generate a digital signal.

[0016] The descrambling and demuxing processor 18 descrambles the broadcast signal input from the demodulator 16, and divides the descrambled signal into a video signal, an audio signal, and other signals (subtitle data, etc.). The divided video signal is output to a display processor 24, and the divided audio signal is output to an audio processor 20.

[0017] The display processing unit 24 generates display data by processing signals input from at least one of the control unit 12 and the descrambling and demux processing unit 18 so that they can be displayed on the display unit 70, and outputs the generated display data to the display unit 70.

[0018] The display unit 70 displays on a display surface the display data input from the display processing unit 24. The display unit 70 is, for example, a liquid crystal panel or an organic EL (Electro-Luminescence) panel.

[0019] The audio processing unit 20 generates audio data by processing signals input from at least one of the control unit 12 and the descrambling and demux processing unit 18, and outputs the generated audio data to the speaker 60. The audio processing unit 20 can be configured, for example, by an audio output processing circuit such as an amplifier.

[0020] The speaker 60 outputs the audio data input from the audio processor 20 to the outside.

[0021] The storage unit 26 is used as a main storage unit in which the control program is loaded by the control unit 12. The storage unit 26 is, for example, a RAM (Random Access Memory).

[0022] Flash memory 28 is a non-volatile storage device capable of storing various types of information, and is used as an auxiliary storage unit for the main storage unit, storage unit 26. Note that the auxiliary storage unit is not limited to flash memory 28, and may be, for example, a hard disk drive or the like.

[0023] Next, the process of displaying the reception quality based on the C / N value will be described with reference to FIGS.

[0024] Fig. 2 is an example of a flowchart of a display process of reception quality based on a broadcasting format according to an embodiment of the present invention, and Fig. 3 is an example of a display screen of the display process of reception quality based on a broadcasting format.

[0025] First, the control unit 12 selects one of a plurality of channels in response to a user operation.

[0026] In step S201, the control unit 12 acquires from the demodulation unit 16 the C / N value of the broadcast signal of the selected channel.

[0027] In step S202, the control unit 12 acquires from the descrambling and demuxing unit 18 TMCC information including information for identifying the broadcasting format of the selected channel.

[0028] In step S203, the control unit 12 determines the broadcasting format of the selected channel from the TMCC information acquired in step S202. If it is determined that the broadcasting format of the selected channel is 4K8K broadcasting, the control proceeds to step S204, and if it is determined that the broadcasting format of the selected channel is not 4K8K broadcasting (i.e., the broadcasting format of the selected channel is 2K broadcasting), the control proceeds to step S205. Examples of 4K8K broadcasting include 4K BS (4K-BS) broadcasting, 8K BS (8K-BS) broadcasting, 4K CS110 degrees (4K-CS110 degrees) broadcasting, and 8K CS110 degrees (8K-CS110 degrees) broadcasting. Examples of 2K broadcasting include 2K BS (2K-BS) broadcasting, 2K CS110 degrees (2K-CS110 degrees) broadcasting, and 2K terrestrial broadcasting. In the embodiment, a case will be described in which digital broadcast receiving device 100 receives 2K-BS broadcasting, 4K BS (4K-BS) broadcasting, or 8K BS (8K-BS) broadcasting.

[0029] In step S204, the control unit 12 converts the C / N value acquired in step S201 into a 4K8K reception signal quality, and calculates the 4K8K reception signal quality. Specifically, for example, a modulation method called 16APSK7 / 9 is applied to 4K-BS broadcasting and 8K-BS broadcasting. The reception C / N value (required C / N) required to receive broadcasting of this method is theoretically about 13 dB. In order to maintain a stable reception state, a C / N value of about 15 dB (required stable reception state value) obtained by adding a margin to the required C / N is considered to be necessary. The control unit 12 uses a conversion formula that provides a reception quality (target reception quality) that the user uses as an index for installation adjustment when the C / N value is 15 dB. The target reception quality is, for example, preset and stored in the flash memory 28. The value obtained by adding a margin to the required C / N is an example of a required stable reception state value required to stably receive broadcasting. The required C / N, margin, and required stable reception state values ​​are, for example, set in advance and stored in the flash memory 28.

[0030] For example, if the reception quality (target reception quality) is 100 as an index for installation adjustment, when a conversion formula using simple multiplication is used, the multiplication coefficient is 100 / 15, which is the target reception quality divided by the required stable reception state value (a value obtained by adding a margin to the required C / N value). Therefore, the control unit 12 multiplies the C / N value acquired in step S201 by the above coefficient to calculate the reception signal quality for 4K8K. The reception quality (target reception quality) as an index for installation adjustment is an example of a target value. Note that the conversion formula using multiplication is an example, and addition, subtraction, or division may be used, or addition, subtraction, multiplication, and division may be combined.

[0031] In step S205, the control unit 12 converts the C / N value acquired in step S201 into a 2K reception signal quality to calculate the 2K reception signal quality. Specifically, for example, a modulation method called TC-8PSK2 / 3 is applied to 2K-BS broadcasting. The reception C / N value (required C / N) required to receive broadcasting of this method is theoretically about 9 dB. Since the C / N value varies due to the influence of the reception environment, it is considered that a C / N value of about 11 dB (required stable reception state value) obtained by adding a margin to the required C / N is required to maintain a stable reception state. The control unit 12 uses a conversion formula that results in a reception quality (target reception quality) that the user uses as an index for installation adjustment when the C / N value is 11 dB. The target reception quality is, for example, preset and stored in the flash memory 28. The value obtained by adding a margin to the required C / N is an example of a required stable reception state value required to stably receive broadcasting. The required C / N, margin, and required stable reception state values ​​are, for example, set in advance and stored in the flash memory 28.

[0032] For example, if the reception quality (target reception quality) to be used as an index for installation adjustment is set to 100, when a conversion formula using simple multiplication is used, the multiplication coefficient is the target reception quality divided by the required stable reception state value (a value obtained by adding a margin to the required C / N value) = 100 / 11. Therefore, the control unit 12 multiplies the C / N value acquired in step S201 by the above coefficient to calculate the reception quality for 2K.

[0033] In step S206, the display processing unit 24 causes the display unit 70 to display the reception quality calculated in step S204 or S205.

[0034] Specifically, for example, if a C / N value of 16.5 is acquired in step S201 and the broadcasting method is determined to be 4K8K broadcasting in step S203, the reception signal quality for 4K8K is calculated in step S204. If the target reception quality is 100 as described in step S204, the reception signal quality for 4K8K is 16.5*(100 / 15)=110. Using the target reception quality of "100", the display processing unit 24 displays "Adjust the antenna direction, booster, etc. so that the reception signal quality is 100 or more" on the display unit 70 as shown in FIG. 3. Furthermore, the display processing unit 24 displays the calculated reception signal quality for 4K8K, "110", as the current value on the display unit 70. Also, the display processing unit 24 displays BS-17, which is the satellite number (transponder number) of the selected channel, on the display unit 70. For example, the flash memory 28 stores channels and satellite numbers in association with each other in advance, and the display processing unit 24 acquires the satellite number corresponding to the selected channel from the flash memory 28 and displays it on the display unit 70. The display processing unit 24 may also display the satellite number on the display unit 70 based on data acquired from the broadcast signal. For example, the display processing unit 24 acquires data (TLV-NIT when the broadcast method is 4K8K broadcasting, and NIT when the broadcast method is 2K broadcasting) included in the demodulated broadcast signal. The tlv_stream_id included in the TLV-NIT is 16-bit data, of which 5 bits are the number of the satellite repeater. For example, if the satellite number is BS-17, 5 bits of the 16 bits of the tlv_stream_id are "10001". The transport_stream_id included in the NIT is 16-bit data, of which 5 bits are the number of the satellite repeater. For example, if the satellite number is BS-17, 5 bits of the 16 bits of the transport_stream_id are "10001". The display processing unit 24 may cause the display unit 70 to display the satellite number based on the satellite repeater number included in the tlv_stream_id or transport_stream_id.

[0035] The display processing unit 24 may obtain the satellite number of the selected channel from other data obtained by demodulating the broadcast signal, or may obtain the satellite number of the selected channel from a predetermined server on the Internet or a LAN (Local Area Network). This server may store channels and satellite numbers in association with each other in advance, and when making an inquiry to this server, it may transmit information on the selected channel and return the corresponding satellite number.

[0036] In the embodiment, MER (Modulation Error Ratio) or BER (Bit Error Rate) may be used instead of the C / N value.

[0037] Traditionally, the C / N value and reception strength value obtained by the tuner or demodulator section of a digital broadcast receiving device have been used as numerical values ​​representing the reception status of a broadcast signal (indicators of signal quality), and the C / N value and reception strength value have been processed and displayed according to the product specifications of each receiving device manufacturer.

[0038] In the newly launched 4K / 8K satellite broadcasting, conventional 2K and 4K / 8K broadcasting channels are mixed within the same BS, and the same channels are mixed in the 110° CS broadcasting. However, because the broadcasting methods are different, there are differences in the C / N value and reception strength value of the signal that the receiving device can stably receive. Therefore, if the numerical processing (multiplication coefficient, etc.) defined for each BS / CS110° broadcasting is uniformly used to quantify the above reception state, the numerical value required for stable reception (signal quality index) will differ for each broadcasting method, which may confuse users when adjusting the installation.

[0039] For example, when adjusting the installation of a receiver for a 2K-BS broadcast channel, the C / N required for stable reception is approximately 11 dB, whereas when adjusting the installation of a receiver for a 4K-BS broadcast channel, the C / N required for stable reception is approximately 15 dB. If the same coefficient is multiplied and displayed, the installation adjustment will be based on different values, which will be difficult for users to understand.

[0040] To avoid this, in the embodiment, the coefficient to be multiplied is changed for each broadcasting system, and the index value for installation adjustment that allows stable reception is unified, thereby simplifying and streamlining the adjustment work for the user.

[0041] Using the above example, if the multiplication coefficient of the conversion formula when the broadcasting format is 2K broadcasting such as 2K-BS is 100 / 11, and the multiplication coefficient of the conversion formula when the broadcasting format is 4K8K broadcasting such as 4K-BS is 100 / 15, the installation adjustment index value will be 100 for both 2K broadcasting and 4K8K broadcasting, and can be made common.

[0042] According to the digital broadcast receiving device of the embodiment, for example, regardless of whether the broadcasting format is 2K broadcasting or 4K8K broadcasting, the target value for stable reception regarding the reception quality displayed after conversion is the same, making it easier for the user to understand the settings of the antenna and booster, improving convenience.

[0043] In the example described in the above embodiment, when the broadcasting method is 4K8K broadcasting and the C / N value is the required stable reception state value (=15) of the 4K8K broadcasting, the reception signal quality for 4K8K is calculated as 100, which is the same as the target reception quality, and when the broadcasting method is 2K broadcasting and the C / N value is the required stable reception state value (=11) of the 2K broadcasting, the reception signal quality for 2K is calculated as 100, which is the same as the target reception quality. In this way, when the C / N value is the required stable reception state value of the broadcasting method, in both the case of 2K broadcasting and 4K8K broadcasting, the values ​​calculated by the conversion formula (4K8K reception signal quality and 2K reception signal quality) are the same value (=100). However, when the C / N value is the required stable reception state value of the broadcasting method, a conversion formula is used in which the values ​​calculated in each broadcasting method are the same, but any conversion formula may be used in which the difference between the values ​​calculated in each broadcasting method when the C / N value is the required stable reception state value of the broadcasting method is smaller than a predetermined value. This allows the use of simpler calculation formulas, simplifying the calculation process.

[0044] For example, the predetermined value is the difference between values ​​calculated using the same conversion formula for each broadcasting system when the C / N value is the required stable reception state value for that broadcasting system. Specifically, in both the 2K broadcasting and the 4K8K broadcasting, when the conversion formula of multiplying the C / N value by 100 / 15 is used, if the broadcasting system is 4K8K broadcasting and the C / N value is the required stable reception state value for 4K8K broadcasting (=15), the calculated value is 100, and if the broadcasting system is 2K broadcasting and the C / N value is the required stable reception state value for 2K broadcasting (=11), the calculated value is 73, and the difference between the two calculated values ​​is 27 (=100-73). Therefore, in this case, the predetermined value is 27.

[0045] In this case, the conversion formula used when the broadcasting system is 2K broadcasting should be a conversion formula that calculates a value greater than 73 (but less than 100) when the C / N value is the required stable reception state value for 2K broadcasting (=11).

[0046] In this way, the deviation between the values ​​calculated for each broadcasting system when the required stable reception state value is met is small (less than 27), which is an improvement over the case where the same conversion formula is used for each broadcasting system and the calculated values ​​are displayed, making it easier to understand the settings of antennas and boosters.

[0047] Furthermore, the conversion formula for each broadcasting method may be a conversion formula in which, when the C / N value is the required stable reception state value for that broadcasting method, the difference between values ​​calculated using the conversion formula for each broadcasting method is smaller than the minimum step of the calculated value (reception quality) when displayed on the display unit 70. For example, the minimum step and the predetermined value may be 1. For example, when the calculated value (reception quality) displayed on the display unit 70 is displayed as an integer by rounding down decimals, the difference between values ​​calculated using the conversion formula for each broadcasting method is set to be less than 1 when the C / N value is the required stable reception state value for that broadcasting method. Specifically, a conversion formula may be used in which, when the broadcasting method is 4K8K broadcasting and the C / N value is the required stable reception state value for 4K8K broadcasting (=15), the received signal quality for 4K8K is a value of 99 or more less than 100 (for example, 99.8), and when the broadcasting method is 2K broadcasting and the C / N value is the required stable reception state value for 2K broadcasting (=11), the received signal quality for 2K is a value of 99 or more less than 100 (for example, 99.2). In this case, the received signal quality for 4K8K when the broadcasting method is 4K8K broadcasting and the C / N value is the required stable reception state value for 4K8K broadcasting (=15) and the received signal quality for 2K when the broadcasting method is 2K broadcasting and the C / N value is the required stable reception state value for 2K broadcasting (=11) are displayed as 99, so that it can be said that it is generally correct to display "Adjust the antenna direction, booster, etc. so that the received signal quality is 100 or more" as shown in FIG. 3, and the display can be made without contradiction.

[0048] Furthermore, the digital broadcast receiving device 100 may perform a process of displaying the reception strength based on the broadcasting system as described below.

[0049] Fig. 4 is an example of a flowchart of the display process of the reception strength based on the broadcasting system according to the embodiment. Fig. 5 is an example of a display screen of the display process of the reception strength based on the broadcasting system.

[0050] First, the control unit 12 selects one of a plurality of channels in response to a user operation.

[0051] In step S401, the control unit 12 acquires from the tuner unit 14 the reception strength value of the broadcast signal of the selected channel.

[0052] In step S402, the control unit 12 acquires from the descrambling and demuxing unit 18 TMCC information including information for identifying the broadcasting format of the selected channel.

[0053] In step S403, the control unit 12 determines the broadcasting format of the selected channel from the TMCC information acquired in step S402. If it is determined that the broadcasting format of the selected channel is 4K8K broadcasting, control proceeds to step S404, and if it is determined that the broadcasting format of the selected channel is not 4K8K broadcasting (i.e., the broadcasting format of the selected channel is 2K broadcasting), control proceeds to step S405.

[0054] In step S404, the control unit 12 converts the reception strength value acquired in step S401 into a reception signal strength for 4K8K, and calculates the reception signal strength for 4K8K. Specifically, for example, a modulation method called 16APSK7 / 9 is applied to 4K-BS broadcasting and 8K-BS broadcasting. The reception strength value (required reception strength value) required to receive broadcasting of this method depends on the tuner sensitivity, but needs to be higher than that for 2K-BS reception, and is set to -65 dBm in this embodiment. In order to maintain a stable reception state, it is considered that a reception strength value of about -60 dBm, which is obtained by adding a margin (=5) to the required reception strength value, is required. The control unit 12 uses a conversion formula such that when the reception strength value is -60 dBm, the reception strength (target reception strength) becomes a user's index for installation adjustment. The target reception strength is, for example, preset and stored in the flash memory 28. The value obtained by adding a margin to the required reception strength value is an example of a required stable reception state value required to stably receive broadcasting. The required reception strength value, the margin, and the required stable reception state value are, for example, set in advance and stored in the flash memory 28.

[0055] For example, if the reception strength (target reception strength) is 60 as an index for installation adjustment, when a conversion formula using simple addition is used, the added value is the difference between the target reception strength value and the value obtained by adding a margin to the required reception strength value = 120 (= 60 - (-65 + 5)). Therefore, the control unit 12 adds the added value to the signal reception strength value acquired in step S401 to calculate the reception signal strength for 4K8K. The value obtained by adding a margin to the required reception strength value is an example of a required reception state value necessary for stable reception of broadcasts. The reception strength (target reception strength) as an index for installation adjustment is an example of a target value. Note that the conversion formula using addition described above is an example, and subtraction, multiplication, or division may be used, or addition, subtraction, multiplication, and division may be combined.

[0056] In step S405, the control unit 12 converts the reception strength value acquired in step S401 into the reception signal quality for 2K, and calculates the reception signal strength for 2K. Specifically, for example, a modulation method called TC-8PSK2 / 3 is applied to 2K-BS broadcasting. The reception strength value (required reception strength value) required to receive broadcasting of this method depends on the tuner sensitivity, but is set to -70 dBm in this embodiment. Since the reception strength value varies due to the influence of the reception environment, it is considered that a reception strength value of about -65 dBm, which is obtained by adding a margin (=5) to the required reception strength value, is required to maintain a stable reception state. The control unit 12 uses a conversion formula such that when the reception strength value is -65 dBm, the reception strength (target reception strength) becomes a user's index for installation adjustment. The target reception strength is, for example, preset and stored in the flash memory 28. The value obtained by adding a margin to the required reception strength value is an example of a required stable reception state value required to stably receive broadcasting. The required reception strength value, the margin, and the required stable reception state value are, for example, set in advance and stored in the flash memory 28.

[0057] For example, if the reception strength (target reception strength) used as an index for installation adjustment is 60, when a conversion formula using simple addition is used, the added value is the difference between the target reception strength and the required reception strength value plus a margin = 125 (= 60 - (-70 + 5)). Therefore, the control unit 12 adds the added value to the reception strength value acquired in step S401 to calculate the reception signal strength for 2K.

[0058] In step S406, the display processing unit 24 causes the display unit 70 to display the reception strength calculated in step S404 or S405.

[0059] Specifically, for example, if a reception strength value = -50 is acquired in step S401 and the broadcasting method is determined to be 4K8K broadcasting in step S403, the reception signal strength for 4K8K is calculated in step S404. If the target reception strength is 60 as described in step S404, the reception signal quality for 4K8K is -50 + 120 = 70. Using the target reception strength "60", the display processing unit 24 causes the display unit 70 to display "Adjust the antenna direction, booster, etc. so that the reception signal strength is 60 or more" as shown in FIG. 3. Furthermore, the display processing unit 24 causes the display unit 70 to display the calculated reception signal strength for 4K8K, "70", as the current value. Also, the display processing unit 24 causes the display unit 70 to display BS-17, which is the satellite number of the selected channel.

[0060] According to the digital broadcast receiving device of the embodiment, for example, regardless of whether the broadcasting format is 2K broadcasting or 4K8K broadcasting, the target value for stable reception regarding the reception strength displayed after conversion is the same, making it easier for the user to understand the settings of the antenna and booster, improving convenience.

[0061] Furthermore, the digital broadcast receiving device 100 may perform display processing of the reception quality and reception strength based on the broadcasting system of each of a plurality of satellite numbers (transponder numbers) as described below. That is, the digital broadcast receiving device 100 may perform display processing of the reception quality and reception strength based on the broadcasting system of each transponder (repeater) used in the satellite broadcast.

[0062] Fig. 6 is an example of a flowchart of a display process of reception quality and reception strength based on the broadcasting system of each of a plurality of satellite numbers according to an embodiment (in the case of BS right-hand rotation). Fig. 7 is an example of a display screen of a display process of reception quality and reception strength based on the broadcasting system of each of a plurality of satellite numbers.

[0063] In the embodiment, for BS broadcasting using right-hand circularly polarized waves (BS right-hand rotation), a display process of reception quality and reception strength based on the broadcasting system of each of a plurality of satellite numbers is performed.

[0064] In step S601, the control unit 12 acquires all satellite numbers of the BS right-hand circular polarization. As described above, the control unit 12 may acquire the satellite numbers from the flash memory 28, or may acquire the satellite numbers based on data acquired from a broadcast signal.

[0065] In step S602, the control unit 12 selects one unselected satellite number from among the satellite numbers acquired in step S601.

[0066] In step S603, the control unit 12 selects one of the channels included in the satellite number selected in step S602.

[0067] The process of step S604 is similar to the process of step S201, and therefore a detailed description thereof will be omitted.

[0068] The process of step S605 is similar to the process of step S401, and therefore a detailed description thereof will be omitted.

[0069] The process of step S606 is similar to the process of step S202, and therefore a detailed description thereof will be omitted.

[0070] The process of step S607 is similar to the process of step S203, and therefore a detailed description thereof will be omitted.

[0071] The process of step S608 is similar to the process of step S204, and therefore a detailed description thereof will be omitted.

[0072] The process in step S609 is similar to the process in step S404, and therefore a detailed description thereof will be omitted.

[0073] The process of step S610 is similar to the process of step S205, and therefore a detailed description thereof will be omitted.

[0074] The process of step S611 is similar to the process of step S405, and therefore a detailed description thereof will be omitted.

[0075] In step S612, the display processing unit 24 causes the display unit 70 to display the satellite number selected in step S602.

[0076] In step S613, the display processing unit 24 causes the display unit 70 to display the reception quality calculated in step S608 or S610 as the reception quality of the satellite number selected in step S602.

[0077] In step S614, the display processing unit 24 causes the display unit 70 to display the reception strength calculated in step S609 or S611 as the reception strength of the satellite number selected in step S602.

[0078] In step S615, the display processing unit 24 causes the display unit 70 to display the broadcasting format determined in step S607 as the broadcasting format of the satellite number selected in step S602.

[0079] In step S616, the control unit 12 determines whether or not there are any unselected satellite numbers. If it is determined that there are any unselected satellite numbers (i.e., there are any satellite numbers among the satellite numbers acquired in step S601 that have not been selected in step S602), control returns to step S602; if it is determined that there are no unselected satellite numbers, the processing is terminated.

[0080] By the display process of reception quality and reception strength based on the broadcasting system of each of the multiple satellite numbers in Fig. 6, the reception quality, reception strength, and broadcasting system of each satellite number are displayed as shown in Fig. 7. This allows the user to see a list of the reception quality, reception strength, and broadcasting system of each satellite number, and easily know whether there is a satellite number for which stable reception is not possible.

[0081] In the above embodiment, the conversion formula for the C / N value or the reception strength is changed depending on whether the broadcasting system is 2K or 4K8K, but the cases may be further divided. For example, the C / N value or the reception strength may be converted using a different conversion formula depending on whether the broadcasting system is 2K BS broadcasting, 4K BS broadcasting, 8K BS broadcasting, terrestrial broadcasting, 2K CS110-degree broadcasting, or 4K CS110-degree broadcasting.

[0082] (Example of software implementation) The control blocks of the digital broadcast receiving device 100 (particularly, the control unit 12, the tuner unit 14, the demodulation unit 16, the descrambling and demuxing processing unit 18, the audio processing unit 20, and the display processing unit 24) can be realized by a logic circuit (hardware) formed in an integrated circuit (IC (Integrated Circuit) chip) or the like, or may be realized by software using a CPU (Central Processing Unit). In the latter case, the digital broadcast receiving device 100 includes a CPU that executes instructions of a program, which is software that realizes each function, a ROM or storage device (these are referred to as "recording medium") in which the above program and various data are recorded so as to be readable by a computer (or CPU), and a RAM in which the above program is expanded. The computer (or CPU) reads and executes the above program from the recording medium, thereby operating as the control unit 12, the tuner unit 14, the demodulation unit 16, the descrambling and demuxing processing unit 18, the audio processing unit 20, and the display processing unit 24, thereby achieving the object of the present invention. The recording medium may be a "non-transitory tangible medium", such as a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, etc. The program may be supplied to the computer via any transmission medium capable of transmission.

[0083] The present invention is not limited to the above-described embodiment and may be modified, and the above configurations may be replaced with substantially the same configurations, configurations that achieve the same effects, or configurations that can achieve the same purpose. [Explanation of symbols]

[0084] 100 Digital broadcast receiver 12 Control section 24 Display processing section 70 Display section 80 Antenna section

Claims

1. A digital broadcast receiving device including a control unit and a display processing unit, The control unit is A reception status value indicating whether the reception status of the broadcast signal of the selected channel is good or bad is obtained; determining a broadcast format of the channel; converting the reception state value based on a required stable reception state value necessary for stable reception of the broadcasting system corresponding to the determined broadcasting system; The display processing unit is a digital broadcast receiving device that displays the converted reception status value on a display unit.

2. The control unit is When the determined broadcasting system is a first broadcasting system, converting the reception state value by multiplying the reception state value by a first coefficient obtained by dividing a target value by a first required stable reception state value required for stable reception of the first broadcasting system; 2. The digital broadcast receiving device of claim 1, wherein, when the determined broadcasting system is a second broadcasting system, the reception state value is converted by multiplying the reception state value by a second coefficient obtained by dividing the target value by a second required stable reception state value required for stable reception of the second broadcasting system.

3. The control unit is When the determined broadcasting system is a first broadcasting system, converting the reception state value by adding a difference between a target value and a first required stable reception state value required for stable reception of the first broadcasting system to the reception state value; 2. The digital broadcast receiving device of claim 1, wherein when the determined broadcasting system is a second broadcasting system, the reception state value is converted by adding to the reception state value the difference between the target value and a second required stable reception state value required for stable reception of the second broadcasting system.

4. The control unit is If the determined broadcasting system is a first broadcasting system, converting the reception state value using a first conversion formula; If the determined broadcasting system is a second broadcasting system, converting the reception state value using a second conversion formula; A digital broadcast receiving device as described in claim 1, wherein the difference between a first value calculated by the first conversion formula when the determined broadcasting method is a first broadcasting method and the reception state value is a first required stable reception state value required for stable reception of the first broadcasting method, and a second value calculated by the second conversion formula when the determined broadcasting method is a second broadcasting method and the reception state value is a second required stable reception state value required for stable reception of the second broadcasting method, is smaller than a predetermined value.

5. A digital broadcast receiving device including a control unit and a display processing unit, The control unit is For each of a plurality of broadcast signals, a channel of the broadcast signal is selected, a broadcast system of the selected broadcast signal is acquired, and a reception state value indicating whether a reception state of the selected broadcast signal is good or bad is acquired; converting the reception state value based on a required stable reception state value necessary for stable reception of the broadcasting system corresponding to the broadcasting system; The display processing unit is a digital broadcast receiving device that displays the converted reception status value on a display unit.

6. 6. The digital broadcast receiving apparatus according to claim 1, wherein the reception condition value is a C / N value.

7. The digital broadcast receiving device according to claim 1 , wherein the reception condition value is a reception strength.

Images