JP2007312189A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate setting or adjustment in a device where an antenna for receiving broadcast is integrated with or embedded in a television receiver and directivity of the antenna is changed. <P>SOLUTION: The television receiver is equipped with a means (4) for controlling the directivity to measure receiving states, for example, receiving power and noise levels in each direction, etc. and displays the measured information in association with directions on the basis of the receiver (5, 7, 8). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a television receiver, and more particularly to a television receiver with an integrated or built-in antenna capable of controlling directivity.

  Conventionally, a television receiver with a built-in antenna using a lot antenna or a casing is known. For example, Patent Document 1 uses a housing or a chassis to improve the gain of the antenna.

  Also, a technique described in Patent Document 2 that displays and provides an antenna installation procedure with video and audio for the purpose of antenna installation and antenna setting for viewing is known.

  Further, Patent Document 3 discloses that the received power and the received sensitivity are displayed in one dimension as a method for displaying the reception state.

  On the other hand, a technique for easily controlling the directivity of an antenna using an ESPAR antenna of Patent Document 4, a Butler matrix (Patent Document 5) using a microstrip line, or an adaptive array is also known.

JP-A-2005-295135 JP-A-11-266212 JP 2004-180271 A JP 2002-16432 A Japanese Patent Laid-Open No. 08-250923

  However, in a television receiver equipped with a conventional antenna device, the reception power and the reception sensitivity are only displayed, so it is unclear how to best set the reception device. There is a problem that it is difficult to set or adjust the apparatus, which takes time.

The present invention
A television receiver for receiving and displaying digital broadcasts,
A directional variable antenna device for receiving broadcasts,
Control means for controlling the directivity of the directivity variable antenna device;
Measuring means for measuring the reception state in each direction for each directivity;
Display means for displaying the reception status information obtained by measurement based on the reception status obtained by the means for measuring and analyzing on the display screen in relation to the orientation relative to the receiving device;
The control means provides the television receiving apparatus characterized by controlling the display means based on the reception state obtained by the measuring means.

  According to the present invention, since the reception state is displayed in association with the orientation with respect to the television receiver, the setting or adjustment of the television receiver can be performed easily or in a short time.

  Embodiments of the present invention will be described below with reference to the drawings. The present invention is not limited to a reception-only device intended only for receiving a television broadcast, and can be applied to a part having a function of a television receiver built in a mobile phone, for example. "Is to be interpreted as including devices having the function of receiving television broadcasts in various forms.

Embodiment 1 FIG.
FIG. 1 shows a television receiver according to Embodiment 1 of the present invention.

  In FIG. 1, 1a is a receiving antenna, 1b is a parasitic antenna, and the impedance of the antenna is changed by a varicap 1c attached to the lower part of the antenna, and the mutual impedance of the receiving antenna 1a is changed, thereby changing the directivity. . The receiving antenna 1a and the parasitic antenna 1b constitute an ESPAR antenna 2 with variable directivity.

  3 is a channel selection unit that selects a channel from the received signal of the feeding antenna and performs frequency conversion, and 4 is a digital demodulation unit that demodulates the output signal of the channel selection unit 3 and provides reception state information Rs such as reception power and noise. Reference numeral 5 denotes a control unit that receives the reception state information Rs from the digital demodulation unit 4 and generates display information, and is configured by, for example, a programmed computer, for example, a microcomputer. The control unit 5 also changes the directivity of the ESPAR antenna 2 by changing the voltage (directivity control signal) Dc applied to the parasitic antenna 1b.

  Reference numeral 6 denotes a decoder unit that converts a digital signal output from the digital demodulator 4 into a video signal, and reference numeral 7 denotes a video signal from the decoder unit 6 and reception state information Rs that matches each direction from the control unit 5. A display signal generating unit that generates a display signal by mixing the display signals, 8 is a screen display unit, 9 is a memory for storing reception state information Rs in each direction, and 10a is for a user to operate the television receiver. It is a remote control receiving part which receives the signal from remote control 10b.

  FIG. 2 shows an example in which the channel reception status information Rs in the first embodiment of the present invention is two-dimensionally displayed on the screen display unit 8 in relation to the orientation of the receiving device. FIG. 3 similarly shows an example in which the screen display unit 8 is expressed in three dimensions in relation to the orientation of the receiving device.

  Hereinafter, the television receiver according to the first embodiment will be described with reference to FIGS. 1 to 3.

For example, when setting the television receiver, the control unit 5 changes the voltage applied to the parasitic antenna 1b stepwise, thereby changing the directivity of the ESPAR antenna 2 stepwise. For example, the directivity is changed so that the direction of the maximum receiving sensitivity (the direction of the antenna) changes by an angle corresponding to 1/16 of one rotation (360 degrees). Then, information representing the reception state when the maximum reception sensitivity is in each direction is collected and analyzed.
In collecting and analyzing this information, for example, the received power can be obtained by measuring the power at regular intervals, and the reception status information Rs such as noise power can be created from the pilot signal of the digital signal.

  The generated reception state information Rs is stored in the memory 9 and a display signal Dd corresponding to the reception state information Rs is generated by the control unit 5. In the display signal generation unit 7, the video signal Vd from the decoder unit 6 is generated. Superimposed. The video signal from the display signal creation unit 7 is supplied to the display unit 8 for display.

The display signal Dd output from the control unit 5 represents, for example, the received power and the noise level for each azimuth with reference to the receiving device as a continuous line LC on the polar coordinates as shown in FIG. 2, or FIG. The arrows AR1 to AR4 indicate the direction and magnitude (reception power, noise level) of the incoming television signal.
In the examples of FIG. 2 and FIG. 3, the letters CF, CB, CL, and CR such as “front”, “back”, “left”, and “right” are also displayed. The orientation is expressed. Instead of such characters, a specific symbol may be used to represent the azimuth relative to the receiving device.

  2 and 3, the reception state is displayed on a part of the screen SC. However, the reception state may be displayed on the entire screen or may be displayed in a window format.

  As described above, the directivity of the reception antenna is changed, and the reception state information Rs for each direction is acquired and displayed on the screen. For example, an antenna integrated or built in the television receiver is installed. In the case of reception at a moved place such as reception by a mobile phone, setting or adjustment can be performed easily and in a short time by accurately indicating the strongest direction of radio waves. Even when the directivity is automatically changed, the state of the transmission path that changes from time to time is displayed on the screen, for example, when viewing TV on a mobile phone, the user can receive optimal reception with the automatic tracking function of the antenna. You can receive at the location. For example, if the directivity is usually adjusted automatically by a microcomputer, but it cannot be handled by automatic adjustment, a change in the location of the television receiver or the movement of the user carrying the mobile phone is received. It is possible to assist by displaying the status.

Embodiment 2. FIG.
FIG. 4 shows an example in which the reception status information Rs of a plurality of channels is two-dimensionally displayed on the same position on the screen in the second embodiment of the present invention. Here, the reception status information Rs of each channel is an example displayed in a different color. In FIG. 4, the first color is represented by a solid line C1, the second color is represented by a chain line C2, and the third color is represented by a dotted line C3. A signal for displaying the reception status information Rs of such a plurality of channels is also generated by the control unit 5 in FIG.
Since the user can know the direction of the incoming wave of the channel to be selected next by displaying a plurality of channels simultaneously in this way, the channel can be changed by changing the reception direction (direction in which reception sensitivity is maximized) in advance. Immediately after switching, reception can be performed reliably (with higher sensitivity or less noise).
When the television receiver is a fixed receiver, all the receivable channels are displayed at the same time, thereby making it easy to make a comprehensive judgment when installing the fixed receiver.

Embodiment 3 FIG.
FIG. 5 is a flowchart showing the processing of the control unit 5 relating to the display of the optimum reception direction in the third embodiment of the present invention, and FIG. 6 shows the display of the optimum antenna direction (direction in which reception sensitivity is maximized). An example is shown. The processing shown in the flowchart of FIG. 5 is also performed by the control unit 5 of FIG.

  Hereinafter, the television receiver in the third embodiment will be described with reference to FIGS. 5 and 6.

In the flowchart of FIG. 5, first, the ESPAR antenna 2 is adjusted, and the digital demodulator 4 acquires reception state information Rs for each azimuth with reference to the receiving device, and transmits it to the controller 5 (ST11). The control unit 5 multiplies the reception state information Rs for each direction by a correction coefficient for each direction (ST12). This correction coefficient is determined in consideration of the fact that the directivity of the antenna is not uniform in all directions due to the housing or chassis of the television receiver. For example, since the sensitivity of the front side of the television receiver is slightly reduced by the display device, the actual reception power is multiplied by a correction coefficient larger than 1 to cancel such influence (or relative to the coefficient for other directions). Multiplied by a large correction factor). By multiplying the correction coefficient in this way, it is possible to obtain accurate reception state information Rs for each azimuth (correcting the influence of the directivity (attenuation characteristics with respect to the azimuth) of the television receiver itself).
The corrected reception state information Rs for each azimuth is stored (ST13), the direction of the maximum value is searched from the stored information, and the integration for each azimuth is performed (ST14, ST15). From these two pieces of information, the success or failure of reception when the arrival direction and directivity of the currently received channel are varied is determined (ST16). In order to confirm the success or failure of reception, directivity may be actually controlled. In this way, the direction of arrival of a channel is estimated and the reception state is determined (not only the success or failure of reception, but the reception margin is determined from the maximum level and the average level), and the same processing is performed for the next channel. Each direction of arrival is estimated and received. After confirming the state of all channels, the direction in which the most channels can be received from the reception state of each channel is displayed on the screen (ST17). Here, the reception state of each channel for each direction is estimated from the data integrated for each direction of arrival and direction for each channel, and the best direction is selected and displayed on the screen. (For example, the arrival direction of the channel that is most difficult to receive is used as a reference, and whether other channels can be received even if the direction of the television receiver is changed in that direction is calculated.)
In FIG. 6, as an example, the above-mentioned optimum direction is indicated by a straight arrow Dx, and the rotation angle is indicated by a rotation arrow Rx. Since the display shown in FIG. 6 can be recognized intuitively, the setting or adjustment of the television receiver is facilitated.

Embodiment 4 FIG.
FIG. 7 is a flowchart showing processing of the control unit 5 regarding display of the optimum reception direction in Embodiment 4 of the present invention, and FIG. 8 is an example of display of the optimum reception direction.

  Hereinafter, the television receiver in the fourth embodiment will be described with reference to FIG. 7 and FIG.

In the flowchart of FIG. 7, first, the ESPAR antenna 2 is adjusted, and the digital demodulator 4 acquires reception state information Rs for each direction and transmits it to the controller 5 (ST11).
Reception state information Rs for each azimuth is stored in the memory 9 (ST22). This is used later as past reception state information Rs.
The reception status information Rs for each direction acquired in step ST11 is compared with the past reception status information Rs stored in the memory 9 (ST23), and the control unit 5 calculates the deterioration amount as the difference information (ST24). .
The amount of deterioration is compared with a predetermined threshold value, and if it is larger than the threshold value, the user is informed that an obstacle exists in the calculated direction (ST25).
For example, as shown in FIG. 8, the straight arrow Dy and the character information CH “There is an obstacle in the direction of the arrow” give information about the obstacle to the user.
The reception state information Rs for each direction stored in the memory 9 in step ST23 is used later as “past reception state information Rs” for comparison in step ST23.
The “past reception status information Rs” used for comparison in step ST23 is the reception status information Rs in the past of a relatively long time, for example, at the time of installation or periodically (daily or weekly) reception status investigation. Alternatively, it may be the reception status information Rs in the past of a relatively short time, for example, the previous power-off time. For example, in the fixed reception device, the past reception state information Rs of a relatively long time may be used, whereas in the case of a mobile phone reception device with a lot of movement, the past reception state information of a relatively long time. It is desirable to use Rs.

Embodiment 5 FIG.
FIG. 9 is a block diagram of a television receiver according to Embodiment 5 of the present invention, and FIG. 10 is an example of display of the optimum reception direction.

9, the same reference numerals as those in FIG. 1 denote the same or corresponding members.
11a is the first receiving antenna, 11b is the first parasitic antenna, and the impedance of the antenna is changed by the varicap 11c attached to the lower part of the antenna, thereby changing the mutual impedance of the first receiving antenna 11a. Directivity changes.
13a is the second receiving antenna, 13b is the second parasitic antenna, and the impedance of the antenna is changed by the varicap 13c attached to the lower part of the antenna, and the mutual impedance of the second receiving antenna 13a is changed. Directivity changes.
Here, the first ESPAR antenna 12 is configured by the first receiving antenna 11 and the first parasitic antenna 12, and the second ESPAR antenna 14 is configured by the second receiving antenna 13 and the second parasitic antenna 14. It is configured.
Both the first and second ESPAR antennas are directional variable antennas.
For example, the first ESPAR antenna 12 is disposed on the left side of the television receiver, and the second ESPAR antenna 14 is disposed on the right side of the television receiver. Is also called.

  Reference numeral 15 denotes a first channel selection unit that selects a channel from the reception signal of the first feeding antenna 11 and performs frequency conversion. Reference numeral 16 denotes a second channel that selects a channel from the reception signal of the second feeding antenna 13 and performs frequency conversion. A channel selection unit 17 demodulates the signal of the first channel selection unit 15 and provides reception state information Rs 1 such as reception power and noise, and 18 a second channel selection unit 16. A second digital demodulator that demodulates the signal and provides reception state information Rs2 such as reception power and noise.

  A digital signal from the first digital demodulator 17 and the second digital demodulator 18 is diversity-combined to output a combined digital signal 20, and the first digital demodulator 17 and the second digital demodulator 18. Is a diversity combining unit that generates reception state information Rs1 and Rs2 output from the above as combined reception state information Rss.

The control unit 5 receives the reception state information Rs1 and Rs2 from the first digital demodulation unit 17 and the second digital demodulation unit 18, and also receives the combined reception state information Rss from the diversity combining unit 20, and generates display information. .
The control unit 5 also changes the directivity of the first ESPAR antenna 12 by changing the voltage (directivity control signal) Dc1 applied to the first parasitic antenna 11b, thereby changing the second parasitic antenna 13b. The directivity of the second ESPAR antenna 14 is changed by changing the voltage (directivity control signal) Dc2 applied to.

The decoder 6 converts the combined digital signal from the diversity combining unit 20 into a video signal.
The display signal creation unit 7 creates a display signal by mixing the video signal from the decoder unit 6 and the display signal created based on the combined reception state information Rss in accordance with each direction from the control unit 5.

  FIG. 10 shows an example in which channel reception state information Rs1, Rs2, and Rss are two-dimensionally displayed in the fifth embodiment of the present invention.

  Hereinafter, the television receiver in the fifth embodiment will be described with reference to FIG. 9 and FIG.

The control unit 5 changes the voltage applied to the first parasitic antenna 12 and the second parasitic antenna 14 in a stepwise manner, and thereby directivity of the first ESPAR antenna 12 and the second ESPAR antenna 14. Is gradually changed. For example, the directivity is changed so that the direction of the maximum receiving sensitivity (the direction of the antenna) changes by an angle corresponding to 1/16 of one rotation (360 degrees). Then, information representing the reception state when the maximum reception sensitivity is in each direction is collected and analyzed.
In collecting and analyzing this information, for example, the received power can be obtained by measuring the power every fixed time, and reception status information such as noise power can be created from the pilot signal of the digital signal.
The collection and analysis of this information is performed by the reception state information Rs1 and Rs2 of the first and second ESPAR antennas 12 and 14 output from the first and second digital demodulation units 17 and 18, and the output from the diversity combining unit 20. Is performed based on the combined reception state information Rss.

  These reception state information Rs1, Rs2, and Rss are stored in the memory 9, and the display signal Dd corresponding to the reception state information Rs1, Rs2, and Rss is generated by the control unit 5. In the display signal generation unit 7, the decoder unit 6 is superimposed on the video signal Vd. The video signal from the display signal creation unit 7 is supplied to the display unit 8 for display.

  The display signal Dd output from the control unit 5 is based on the receiving apparatus as reception state information Rs1 and Rs2 for the first ESPAR antenna (left antenna) 12 and the second ESPAR antenna (right antenna) 14. The received power and noise level for each direction are represented by, for example, continuous lines C1 to C3 on polar coordinates as shown in FIG. 10, and the combined reception state information Rss is represented by an arrow indicating the optimum reception direction. is there. In the example shown in FIG. 10, the reception state information Rs1 of the first ESPAR antenna (left antenna) 12, the reception state information Rs2 of the second ESPAR antenna (right antenna) 14, and the combined reception state information Rss are respectively Different positions on the screen, for example, upper left, upper right, and lower center as shown in the figure, characters CAL, CAR, “left antenna”, “right antenna”, and “synthesis information” are displayed at the respective positions. In CSY, the meaning of each display is shown, and the letters CF, CB, CL, CR which are “front”, “back”, “left” and “right” are also displayed. The orientation relative to the device is represented. As described in connection with the first embodiment, a specific symbol may be used instead of such a character, and the direction based on the receiving apparatus may be represented.

  In the above example, the reception state information Rs1 and Rs2 obtained from the left and right antennas and the combined reception state information Rss are all displayed on the same screen, but only the information on the left and right antennas is displayed. It may be displayed, or only the information after synthesis may be displayed.

Embodiment 6 FIG.
FIG. 11 is a block diagram of a television receiver according to Embodiment 6 of the present invention.
11, the same reference numerals as those in FIG. 1 denote the same or corresponding members.
In the first embodiment, the ESPAR antenna 2 including the receiving antenna 1a and the parasitic antenna 1b is used. However, in the embodiment of FIG. 11, a plurality of directional antennas 51a to 51d are arranged instead of the ESPAR antenna 2. Antenna selection unit 52, and the antenna selection unit 52 selects the outputs of the plurality of directional antennas 51a to 51d based on the selection signal Ss. In this case, the directional variable antenna device 53 is configured by the plurality of directional antennas 51 a to 51 d and the selection unit 52.
Even with such a configuration, it is possible to acquire received power, noise, and the like in the same number of directions as the number of antennas (for example, four directions when four antennas 51a to 51d are used as shown). And the same effect as in the first embodiment can be obtained.

Embodiment 7 FIG.
FIG. 12 is a block diagram of a television receiver according to Embodiment 7 of the present invention.
12, the same reference numerals as those in FIG. 1 denote the same or corresponding members. 31 is a first receiving antenna, 32 is a second receiving antenna, 33 is a third receiving antenna, 34 is a fourth receiving antenna, 35 is a first channel selector, 36 is a second channel selector, 37 denotes a third channel selection unit, 38 denotes a fourth channel selection unit, 39 denotes an adaptive beam by multiplying signals from the first to fourth reception antennas 31 to 34 by complex weighting coefficients, An adaptive array control unit that estimates the direction of an incoming wave and outputs arrival wave direction estimation result information De.

The digital demodulator 4 in FIG. 12 demodulates the signal from the adaptive array 39 and provides reception state information Rs such as reception power and noise.
The control unit 5 receives the reception state information Rs from the digital demodulation unit 4 and generates display information.
The control unit 5 also controls the adaptive array 39 with the directivity control signal (combining coefficient of each antenna that controls directivity) Dc, so that the adaptive array 39 and the first to fourth receiving antennas 31 to 34 Controls the directivity of the configured directivity variable antenna. Reference numerals 6, 7, and 8 denote the same parts as those in the fifth embodiment.

  Hereinafter, the television receiver according to the seventh embodiment will be described with reference to FIG.

  In the adaptive array 39, the reception signals of the first to fourth reception antennas 31 to 34 are received, the reception signals are calculated by an estimation algorithm such as MMSE, and the arrival directions of the main wave and the sub-wave are estimated. Generate arrival wave direction estimation result information. The arrival wave direction estimation result information De is sent to the control unit 5.

  Also, the digital demodulator 4 analyzes and analyzes the received signal from the adaptive array 39, and obtains received power by measuring the power at regular intervals, for example. Based on the received power information and the arrival wave direction estimation result information, the control unit 5 calculates and displays the received power in each direction.

In the first to sixth embodiments described above, the reception state information Rs is described as being displayed at an arbitrary timing. However, for example, the display of the reception state information Rs in each direction of each channel is specified by the receiver. It may be controlled to display only in the state (for example, installation adjustment state).
Further, by configuring the display to have an on / off function, it may be controlled to display the reception state information in each direction only in a specific state, for example, when the reception state deteriorates. . Furthermore, it may be always displayed (for example, when a television broadcast is received).
Such control is performed by the control unit 5, and display selection is performed using, for example, the remote control 10b and the remote control reception unit 10a.

1 is a block diagram of a television receiving device in Embodiment 1. FIG. 6 is a diagram illustrating an example in which reception state information of a single channel in the first embodiment is displayed two-dimensionally. FIG. 6 is a diagram illustrating an example in which single channel reception state information is displayed in a three-dimensional manner in Embodiment 1. FIG. It is a figure which shows an example which displayed two-dimensionally the reception status information of multiple channels in Embodiment 2. FIG. 10 is a flowchart of processing performed by the control unit 5 for displaying an optimum reception direction in the third embodiment. FIG. 10 is a diagram illustrating an example of display of an optimum reception direction in the third embodiment. 14 is a flowchart of processing performed by the control unit 5 for displaying a reception state in the fourth embodiment. FIG. 18 is a diagram illustrating an example of display of an optimal reception direction in the fourth embodiment. FIG. 10 is a block diagram of a television receiver in a fifth embodiment. FIG. 20 is a diagram illustrating an example of display of reception state information in the fifth embodiment. FIG. 18 is a block diagram of a television receiver in a sixth embodiment. FIG. 20 is a block diagram of a television receiver in a seventh embodiment.

Explanation of symbols

  1a receiving antenna, 1b parasitic antenna, 1c varicap, 2 ESPAR antenna, 3 channel selection unit, 4 digital demodulation unit, 5 control unit, 6 decoder unit, 7 display signal creation unit, 8 screen display unit, 9 memory, 10a Remote control receiver, 10b Remote control, 11a First reception antenna, 11b First parasitic antenna, 11c Varicap, 12 First ESPAR antenna, 13a Second reception antenna, 13b Second parasitic antenna, 13c Vari Cap, 14 second ESPAR antenna, 15 first channel selection unit, 16 second channel selection unit, 17 first digital demodulation unit, 18 second digital demodulation unit, 20 diversity combining unit, 31 first Receiving antenna, 32 second receiving antenna 33 3rd receiving antenna, 34 4th receiving antenna, 35 1st channel selection part, 36 2nd channel selection part, 37 3rd channel selection part, 38 4th channel selection part, 39 Adaptive array Control part, 51a-51d Directional antenna, 52 Antenna selection part.

Claims (15)

A television receiver for receiving and displaying digital broadcasts,
A directional variable antenna device for receiving broadcasts,
Control means for controlling the directivity of the directivity variable antenna device;
Measuring means for measuring the reception state in each direction for each directivity;
Display means for displaying the reception status information obtained by measurement based on the reception status obtained by the means for measuring and analyzing on the display screen in relation to the orientation relative to the receiving device;
The television receiver according to claim 1, wherein the control unit controls the display unit based on a reception state obtained by the measuring unit.   The television receiving apparatus according to claim 1, wherein the reception state is a reception power or a noise level.   2. The television receiver according to claim 1, wherein the reception state is a direction of an incoming wave. The measuring means comprehensively evaluates the reception state for a plurality of channels, and determines the optimum direction for reception,
2. The television receiver according to claim 1, wherein the display means displays an optimum direction for the reception as the reception state. A plurality of the directivity variable antenna devices,
Means for synthesizing received signals from the plurality of directivity variable antennas;
The measurement means measures each reception state of the plurality of directivity variable antenna apparatuses and a combined reception state representing a reception signal state obtained by combining reception signals from the plurality of directivity variable antennas. And
2. The television according to claim 1, wherein the control unit displays each reception state of the plurality of directivity variable antenna devices and the combined reception state on the same display screen of the same display unit. John receiver. It further has storage means for storing the reception state obtained by the measurement means,
The control unit compares the current reception state measured by the measurement unit with a past reception state stored in the storage unit, and detects this when the reception state in a specific direction is deteriorated. ,
The television receiver according to claim 1, wherein the deterioration is notified to the user by the display means or by voice.   The television receiving apparatus according to claim 1, wherein the directivity variable antenna apparatus is an ESPAR antenna.   The television receiving apparatus according to claim 1, wherein the directivity variable antenna apparatus includes a plurality of antennas and an antenna selection unit.   The television receiving apparatus according to claim 1, wherein the directivity variable antenna apparatus includes a plurality of antennas and an adaptive array control unit. The adaptive array control unit estimates the arrival directions of the main wave and the sub wave by calculating the reception signals of each of the plurality of antennas,
The measurement means calculates reception power in each direction by performing calculation based on information representing reception power obtained from the plurality of antennas and directions of arrival of the main wave and subwave,
The television receiver according to claim 9, wherein the control unit causes the display unit to display received power in each direction calculated by the measuring unit.   The television receiver according to claim 1, wherein the display is a two-dimensional display.   The television receiver according to claim 1, wherein the display is a three-dimensional display.   2. The television receiver according to claim 1, wherein in the display, reception states of a plurality of channels are displayed simultaneously and superimposed on each other.   2. The television receiver according to claim 1, wherein in the display, reception states of a plurality of channels are displayed in different colors.   A means for selecting whether the display is always performed, is performed only when the receiving apparatus is in a specific state, or is not performed when the receiving apparatus is in a specific state. The television receiver according to 1.

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