JP4894530B2 - Receiving device and electronic device using the same - Google Patents

Receiving device and electronic device using the same Download PDF

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JP4894530B2
JP4894530B2 JP2007008810A JP2007008810A JP4894530B2 JP 4894530 B2 JP4894530 B2 JP 4894530B2 JP 2007008810 A JP2007008810 A JP 2007008810A JP 2007008810 A JP2007008810 A JP 2007008810A JP 4894530 B2 JP4894530 B2 JP 4894530B2
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reception quality
unit
demodulated signal
value
calculation value
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JP2008177812A (en
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泰信 槻尾
浩明 尾関
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Radio Transmission System (AREA)

Description

本発明は、２以上のアンテナから信号を受信する受信装置とこれを用いた電子機器に関するものである。   The present invention relates to a receiving apparatus that receives signals from two or more antennas and an electronic apparatus using the receiving apparatus.

従来、この種の受信装置は、図６に示すごとく、アンテナ（図示せず）から受信信号を伝達される受信端子１、２と、前記受信信号から復調信号を作成する復調部３、４と、前記復調信号から受信品質算出値を算出する受信品質算出部５ａ、６ａと、前記受信品質算出値から平均化処理算出値を算出する平均化処理部５ｂ、６ｂと、平均化処理部５ｂからの平均化処理算出値と平均化処理部６ｂからの平均化処理算出値に基づき、復調部３からの復調信号と復調部４からの復調信号との合成比を算出する合成比算出部７と、前記合成比に基づき復調部３からの復調信号と復調部４からの復調信号とを合成して合成復調信号を作成する合成部８とを備えることにより、１つのアンテナから受信した信号から復調信号を作成し出力するものよりも、原則として良い受信品質を有する合成復調信号を出力する構成を実現していた。   Conventionally, as shown in FIG. 6, this type of receiving apparatus includes receiving terminals 1 and 2 that receive a received signal from an antenna (not shown), and demodulating units 3 and 4 that create a demodulated signal from the received signal. From reception quality calculation units 5a and 6a that calculate reception quality calculation values from the demodulated signals, averaging processing units 5b and 6b that calculate average processing calculation values from the reception quality calculation values, and averaging processing unit 5b A synthesis ratio calculation unit 7 for calculating a synthesis ratio of the demodulated signal from the demodulator 3 and the demodulated signal from the demodulator 4 based on the averaged process calculation value and the averaging process calculated value from the averaging processor 6b; And a synthesizing unit 8 for synthesizing the demodulated signal from the demodulating unit 3 and the demodulated signal from the demodulating unit 4 based on the synthesizing ratio to create a synthesized demodulated signal, thereby demodulating from the signal received from one antenna Rather than creating and outputting signals The combined demodulated signal having a good reception quality in principle has been realized configured to output.

なお、この出願の発明に関する先行技術文献情報としては、例えば、特許文献１が知られている。
特開２００６−８０６２４号公報 As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.
JP 2006-80624 A

このような従来の受信装置では、１つのアンテナから信号を受信し、復調信号を作成するものよりも、結果的に悪い受信品質を有する合成復調信号を出力してしまう可能性があることが問題となっていた。   In such a conventional receiving apparatus, there is a possibility that a combined demodulated signal having a bad reception quality may be output as a result, rather than receiving a signal from one antenna and creating a demodulated signal. It was.

即ち、一方のアンテナが受信した信号の受信品質が、他方のアンテナが受信した信号の受信品質よりも著しく大きくなる、例としては、図７（ａ）に示すごとく、この受信装置を有する自動車９において、指向性の異なる２つのアンテナ１０、１１を有する自動車９が走行方向を変更することにより、例えば信号１２の到来方向が図７（ｂ）に示すごとく変化し、その結果として、アンテナ１０の信号１２に対する受信レベルがアンテナ１１におけるそれよりも著しく高くなり、その結果として、一方のアンテナ１０が受信した信号の受信品質が、他方のアンテナ１１が受信した信号の受信品質よりも著しく大きくなることがある。   That is, the reception quality of the signal received by one antenna is significantly higher than the reception quality of the signal received by the other antenna. For example, as shown in FIG. In FIG. 7B, for example, the arrival direction of the signal 12 changes as shown in FIG. 7B by changing the traveling direction of the automobile 9 having the two antennas 10 and 11 having different directivities. The reception level for the signal 12 is significantly higher than that at the antenna 11, and as a result, the reception quality of the signal received by one antenna 10 is significantly higher than the reception quality of the signal received by the other antenna 11. There is.

このような受信状態において、アンテナ１０の受信品質（例えば、受信信号のキャリアレベルとノイズレベルの比（以下、Ｃ／Ｎ比））を図６に示す受信品質算出部５ａにより、アンテナ１１の受信品質を受信品質算出部６ａにより算出すると、図８（ａ）に示すごとく、アンテナ１０の受信品質を受信品質算出部５ａで算出した受信品質算出値１３が、受信状態に大きな変化があったｔ１を過ぎた時点から急激に立ち上がり、図８（ｂ）に示すごとく、アンテナ１１の受信品質を受信品質算出部５ｂで算出した受信品質算出値１４が、ｔ１を過ぎた時点から急激に下降する。   In such a reception state, the reception quality (for example, the ratio between the carrier level and noise level of the received signal (hereinafter referred to as C / N ratio)) of the antenna 10 is received by the reception quality calculation unit 5a shown in FIG. When the quality is calculated by the reception quality calculation unit 6a, the reception quality calculation value 13 obtained by calculating the reception quality of the antenna 10 by the reception quality calculation unit 5a is greatly changed in the reception state as shown in FIG. 8A. As shown in FIG. 8B, the reception quality calculation value 14 obtained by calculating the reception quality of the antenna 11 by the reception quality calculation unit 5b rapidly decreases from the time after t1.

次に、受信信号のばらつきに影響されずに２つの復調信号の合成比を定めることを目的として、平均化処理部５ｂ、６ｂにおいて、これら受信品質算出値１３、１４に対し平均化処理が行われる。受信品質算出値１３、１４を平均化処理すると、それぞれ図８（ａ）（ｂ）に示すような平均化処理算出値１５、１６となる。   Next, for the purpose of determining the composite ratio of the two demodulated signals without being affected by variations in the received signals, the averaging processing units 5b and 6b perform an averaging process on these received quality calculated values 13 and 14. Is called. When the reception quality calculation values 13 and 14 are averaged, the average processing calculation values 15 and 16 as shown in FIGS. 8A and 8B are obtained.

ここで、この平均化処理部５ｂ、６ｂでは、過去の受信品質算出値１３、１４の値をも考慮して平均化処理が行われるため、実際にはｔ１において、受信品質算出値１３の値は急激に立ち上がり、受信品質算出値１４の値は急激に下降しているにもかかわらず、平均化処理算出値１５、１６は緩やかなカーブを描いて変化することとなる。   Here, since the averaging processing units 5b and 6b perform the averaging process in consideration of the values of the past reception quality calculation values 13 and 14, the value of the reception quality calculation value 13 is actually at t1. Rises abruptly, and even though the reception quality calculation value 14 sharply decreases, the averaging processing calculation values 15 and 16 change in a gentle curve.

合成比算出部７は、このような平均化処理算出値１５、１６に基づいて、復調部３からの復調信号と復調部４からの復調信号との合成比を算出するため、実際の受信品質算出値１３、１４に基づけば９：１若しくは１：０の割合で合成すべきところを、例えば６：４の割合で合成するべきであると判断してしまい、その結果として、１つのアンテナから信号を受信し、復調信号を出力するものよりも、悪い受信品質を有する合成復調信号を合成部８が出力してしまう可能性があった。   Since the synthesis ratio calculation unit 7 calculates the synthesis ratio of the demodulated signal from the demodulator 3 and the demodulated signal from the demodulator 4 based on the average processing calculation values 15 and 16, the actual reception quality Based on the calculated values 13 and 14, it is determined that a portion to be combined at a ratio of 9: 1 or 1: 0 should be combined at a ratio of, for example, 6: 4. There is a possibility that the synthesizing unit 8 outputs a combined demodulated signal having a reception quality worse than that of receiving a signal and outputting a demodulated signal.

そこで本発明は、２以上のアンテナから信号を受信して復調信号を作成し出力する受信装置において、その出力における受信品質を向上させることを目的とする。   Accordingly, an object of the present invention is to improve reception quality at the output of a receiving apparatus that receives signals from two or more antennas and generates and outputs a demodulated signal.

そして、この目的を達成するために本発明は、合成復調信号から第３の受信品質算出値を算出する第３の受信品質算出部と、前記第３の受信品質算出値から第３の平均化処理算出値を算出する第３の平均化処理部と、第１の平均化処理算出値と第２の平均化処理算出値と前記第３の平均化処理算出値とを比較する比較選択出力部とを設け、この比較選択出力部は、前記第１の平均化処理算出値と前記第２の平均化処理算出値と前記第３の平均化処理算出値の内、前記第１の平均化処理算出値が最も良い場合には前記第１の復調信号を出力し、前記第２の平均化処理算出値が最も良い場合には前記第２の復調信号を出力し、前記第３の平均化処理算出値が最も良い場合には前記合成復調信号を出力する構成とした受信装置としたものである。   In order to achieve this object, the present invention provides a third reception quality calculation unit for calculating a third reception quality calculation value from the combined demodulated signal, and a third averaging from the third reception quality calculation value. A third averaging processing unit for calculating a processing calculation value, and a comparison selection output unit for comparing the first averaging processing calculation value, the second averaging processing calculation value, and the third averaging processing calculation value; And the comparison / selection output unit includes the first averaging process among the first averaging process calculated value, the second averaging process calculated value, and the third averaging process calculated value. When the calculated value is the best, the first demodulated signal is output, and when the calculated value is the best, the second demodulated signal is output, and the third averaging process is performed. When the calculated value is the best, the receiving apparatus is configured to output the combined demodulated signal.

この構成により、本発明の受信装置は、合成復調信号の受信品質を示す第３の平均化処理算出値よりも、第１若しくは第２の復調信号の受信品質を示す第１若しくは第２の平均化処理算出値が良い場合には、これら第１若しくは第２の復調信号を、他の復調信号と合成することなくそのまま出力させることができるため、出力における受信品質を向上させることができるのである。   With this configuration, the receiving apparatus of the present invention has the first or second average indicating the reception quality of the first or second demodulated signal, rather than the third averaging processing calculation value indicating the reception quality of the combined demodulated signal. When the digitization processing calculation value is good, the first or second demodulated signal can be output as it is without being combined with other demodulated signals, so that the reception quality at the output can be improved. .

（実施の形態１）
以下、本発明の実施の形態１における受信装置について図面を参照しながら説明する。 (Embodiment 1)
Hereinafter, the receiving apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings.

図１において、本実施の形態における受信装置は、信号を受信する受信アンテナ（図示せず）にそれぞれ電気的に接続されるとともに、この受信アンテナ（図示せず）から受信信号が伝達される受信端子１７、１８と、この受信端子１７、１８にそれぞれ電気的に接続される復調部１９、２０と、この復調部１９、２０に電気的に接続される受信品質算出部２１ａ、２２ａと、この受信品質算出部２１ａ、２２ａに電気的に接続される平均化処理部２１ｂ、２２ｂと、この平均化処理部２１ｂ、２２ｂに電気的に接続される合成比算出部２３と、この合成比算出部２３及び復調部１９、２０に電気的に接続される合成部２４と、合成部２４に電気的に接続される受信品質算出部２５ａと、この受信品質算出部２５ａに電気的に接続される平均化処理部２５ｂと、復調部１９、２０、合成部２４、及び平均化処理部２１ｂ、２２ｂ、２５ｂに電気的に接続される比較選択出力部２６とを備えている。   In FIG. 1, the receiving apparatus according to the present embodiment is electrically connected to a receiving antenna (not shown) that receives a signal, and receives a received signal from the receiving antenna (not shown). Terminals 17, 18; demodulating sections 19, 20 electrically connected to the receiving terminals 17, 18; reception quality calculating sections 21a, 22a electrically connected to the demodulating sections 19, 20; Averaging processors 21b and 22b electrically connected to the reception quality calculators 21a and 22a, a synthesis ratio calculator 23 electrically connected to the averaging processors 21b and 22b, and a synthesis ratio calculator 23 and a synthesizing unit 24 electrically connected to the demodulation units 19 and 20, a reception quality calculating unit 25a electrically connected to the synthesizing unit 24, and an average electrically connected to the reception quality calculating unit 25a A processing section 25b, and includes demodulator 19, 20, combining unit 24, and the averaging processing unit 21b, 22b, and a comparison selective output section 26 that is electrically connected to 25b.

次に、本実施の形態における受信装置の動作原理について説明する。   Next, the operating principle of the receiving apparatus in this embodiment will be described.

図１において、まず、受信アンテナ（図示せず）が受信した受信信号が受信端子１７、１８に伝達される。   In FIG. 1, first, a reception signal received by a reception antenna (not shown) is transmitted to reception terminals 17 and 18.

次に、この受信信号が復調部１９、２０に伝達されるとともに、この復調部１９、２０においてそれぞれ復調信号が作成される。   Next, the received signal is transmitted to the demodulating units 19 and 20, and the demodulating units 19 and 20 generate demodulated signals, respectively.

その後、この復調信号がそれぞれ受信品質算出部２１ａ、２２ａに伝達されるとともに、この受信品質算出部２１ａ、２２ａにおいて、図２（ａ）（ｂ）に示すごとく受信品質算出値２７、２８が算出される。なお、本実施の形態においては、受信品質算出値２７、２８としてＣ／Ｎ比を例に挙げて説明するが、その他、受信端子の前段にある可変アンプ（図示せず）の利得を制御するＡｕｔｏ Ｇａｉｎ Ｃｏｎｔｒｏｌ電圧（以下、ＡＧＣ検出）等の受信品質に関する指標であっても構わない。   Thereafter, the demodulated signals are transmitted to reception quality calculation units 21a and 22a, respectively, and reception quality calculation values 27 and 28 are calculated in reception quality calculation units 21a and 22a as shown in FIGS. Is done. In the present embodiment, the C / N ratio will be described as an example of the reception quality calculation values 27 and 28. In addition, the gain of a variable amplifier (not shown) in the preceding stage of the reception terminal is controlled. It may be an index relating to reception quality such as an Auto Gain Control voltage (hereinafter, AGC detection).

次に、この受信品質算出値２７、２８が図１に示す平均化処理部２１ｂ、２２ｂに伝達されるとともに、この平均化処理部２１ｂ、２２ｂにおいて、図２（ａ）（ｂ）に示すごとく平均化処理算出値２９、３０が算出される。   Next, the reception quality calculation values 27 and 28 are transmitted to the averaging processing units 21b and 22b shown in FIG. 1, and the averaging processing units 21b and 22b receive the values as shown in FIGS. 2 (a) and 2 (b). Averaging processing calculation values 29 and 30 are calculated.

その後、この平均化処理算出値２９、３０が、図１に示す合成比算出部２３に伝達されるとともに、この合成比算出部２３において、復調部１９による復調信号と復調部２０による復調信号との合成比を算出する。   Thereafter, the average processing calculation values 29 and 30 are transmitted to the synthesis ratio calculation unit 23 shown in FIG. 1, and in the synthesis ratio calculation unit 23, the demodulated signal by the demodulator 19 and the demodulated signal by the demodulator 20 Is calculated.

次に、この合成比が合成部２４に伝達されるとともに、この合成部２４において前記合成比に基づき復調部１９による復調信号と復調部２０による復調信号との合成が行われ、合成復調信号が作成される。   Next, the synthesis ratio is transmitted to the synthesis unit 24, and the synthesis unit 24 combines the demodulated signal by the demodulator 19 and the demodulated signal by the demodulator 20 based on the synthesis ratio. Created.

その後、この合成復調信号が受信品質算出部２５ａに伝達されるとともに、この受信品質算出部２５ａにおいて、図２（ｃ）に示すごとく合成復調信号の受信品質算出値３１が算出される。   Thereafter, the combined demodulated signal is transmitted to the reception quality calculation unit 25a, and the reception quality calculation unit 25a calculates the reception quality calculation value 31 of the combined demodulation signal as shown in FIG.

次に、この受信品質算出値３１が図１に示す平均化処理部２５ｂに伝達されるとともに、この平均化処理部２５ｂにおいて、図２（ｃ）に示すごとく平均化処理算出値３２が算出される。   Next, the reception quality calculation value 31 is transmitted to the averaging processing unit 25b shown in FIG. 1, and the averaging processing calculation value 32 is calculated in the averaging processing unit 25b as shown in FIG. 2C. The

その後、図１に示す平均化処理部２１ｂにより算出された平均化処理算出値２９（図２参照）と、平均化処理部２２ｂにより算出された平均化処理算出値３０（図２参照）と、平均化処理部２５ｂにより算出された平均化処理算出値３２（図２参照）とが比較選択出力部２６に伝達されるとともに、図３に示すごとく、平均化処理算出値２９、３２、３０を単位時間（例えばｔ０〜ｔ１、ｔ１〜ｔ２）当たりに区切ってその大小を比較する。   After that, the averaging process calculation value 29 (see FIG. 2) calculated by the averaging processing unit 21b shown in FIG. 1, the averaging process calculation value 30 (see FIG. 2) calculated by the averaging processing unit 22b, The average processing calculation value 32 (see FIG. 2) calculated by the averaging processing unit 25b is transmitted to the comparison / selection output unit 26, and as shown in FIG. 3, the average processing calculation values 29, 32, and 30 are set. A unit time (for example, t0 to t1, t1 to t2) is divided and compared.

本実施の形態においては、この平均化処理算出値２９、３２、３０の内、ｔ０〜ｔ１においては平均化処理算出値３２が、ｔ１〜ｔ２においては平均化処理算出値２９が最も良い値となっているため、比較選択出力部２６は、ｔ０〜ｔ１に関しては復調部１９からの復調信号を、ｔ１〜ｔ２に関しては合成部２４からの合成復調信号を出力する。   In the present embodiment, among the averaging process calculation values 29, 32, and 30, the averaging process calculation value 32 is the best value from t0 to t1, and the averaging process calculation value 29 is the best value from t1 to t2. Therefore, the comparison / selection output unit 26 outputs the demodulated signal from the demodulating unit 19 for t0 to t1, and the combined demodulated signal from the combining unit 24 for t1 to t2.

このような構成により、出力における受信品質を向上させることができる。以下、その理由について説明する。   With such a configuration, the reception quality at the output can be improved. The reason will be described below.

まず、図１に示す合成比算出部２３において算出される、復調部１９による復調信号と復調部２０による復調信号との合成比は、それらの受信品質を図２（ａ）（ｂ）に示すごとく平均化処理した平均化処理算出値２９、３０に基づいて算出するわけであるが、受信端子１７に接続されたアンテナ（図示せず）と、受信端子１８に接続されたアンテナ（図示せず）とのＣ／Ｎ比がさほど変わらないｔ０〜ｔ１においては、平均化処理算出値２９、３０に基づいて復調部１９、２０による復調信号が合成されることにより、図３に示すごとく、二つの復調信号の平均化処理算出値２９、３０よりも良い平均化処理算出値３２を得ることができる。キャリアレベルは、平均化処理部２１ｂが出力するＣ／Ｎ比と平均化処理部２２ｂが出力するＣ／Ｎ比との比に基づいて、復調部１９からの復調信号と復調部２０からの復調信号のキャリアを合成するため大きくなるのに対し、ノイズレベルは、復調部１９からの復調信号と復調部２０からの復調信号との間において無相関であるため、合成しても大きくならないからである。   First, the composite ratio of the demodulated signal by the demodulator 19 and the demodulated signal by the demodulator 20 calculated by the composite ratio calculator 23 shown in FIG. 1 indicates their reception quality as shown in FIGS. The calculation is performed based on the average processing calculation values 29 and 30 that are averaged as described above. The antenna (not shown) connected to the receiving terminal 17 and the antenna (not shown) connected to the receiving terminal 18 are used. 3), the demodulated signals by the demodulating units 19 and 20 are synthesized based on the average processing calculation values 29 and 30, so that the C / N ratio does not change so much as shown in FIG. It is possible to obtain an average processing calculation value 32 better than the average processing calculation values 29 and 30 of the two demodulated signals. The carrier level is determined based on the ratio between the C / N ratio output from the averaging processor 21b and the C / N ratio output from the averaging processor 22b, and the demodulated signal from the demodulator 19 and demodulated from the demodulator 20. This is because the signal level is increased because the carrier of the signal is combined, but the noise level is not correlated between the demodulated signal from the demodulator 19 and the demodulated signal from the demodulator 20, and therefore does not increase even if the signal is combined. is there.

一方、ｔ１〜ｔ２においては、平均化処理算出値２９、３０に基づいて復調部１９、２０による復調信号が合成されることにより、図３に示すごとく、平均化処理算出値２９よりも悪い平均化処理算出値３２を得ることとなる。   On the other hand, at t1 to t2, the demodulated signals by the demodulating units 19 and 20 are synthesized based on the average processing calculation values 29 and 30, so that the average is worse than the average processing calculation value 29 as shown in FIG. The calculation processing value 32 is obtained.

即ち、平均化処理算出値２９、３０は、図２（ａ）（ｂ）に示すごとく、過去の受信品質算出値１３、１４の値をも考慮して定められるため、実際にはｔ１において、受信品質算出値２７の値は急激に立ち上がり、受信品質算出値２８の値は急激に下降しているにもかかわらず、平均化処理算出値２９、３０はそれぞれ緩やかなカーブを描いて変化することとなる。図１に示す合成比算出部２３は、このような平均化処理算出値２９、３０に基づいて、復調部１９からの復調信号と復調部２０からの復調信号との合成比を算出するため、実際の受信品質算出値１３、１４に基づけば９：１若しくは１：０の割合で合成すべきところを、例えば６：４の割合で合成するべきであると判断してしまい、その結果として、平均化処理算出値２９よりも平均化処理算出値３２の値が低く算出されることとなる。   That is, the average processing calculation values 29 and 30 are determined in consideration of the past reception quality calculation values 13 and 14 as shown in FIGS. 2 (a) and 2 (b). Although the value of the reception quality calculation value 27 rises rapidly and the value of the reception quality calculation value 28 sharply decreases, the average processing calculation values 29 and 30 change in a gentle curve respectively. It becomes. 1 calculates a synthesis ratio between the demodulated signal from the demodulator 19 and the demodulated signal from the demodulator 20 based on the averaging processing calculation values 29 and 30 as described above. Based on the actual reception quality calculation values 13 and 14, it is determined that the portion to be combined at a ratio of 9: 1 or 1: 0 should be combined at a ratio of 6: 4, for example. The value of the averaging process calculation value 32 is calculated to be lower than the averaging process calculation value 29.

しかし、本実施形態の受信装置においては、比較選択出力部２６が、図３に示すごとく、平均化処理算出値２９、３０、３２の内、平均化処理算出値２９が最も良い場合には復調部１９による復調信号を出力し、平均化処理算出値３０が最も良い場合には復調部２０による復調信号を出力し、平均化処理算出値３２が最も良い場合には合成部２３による合成復調信号を出力する構成としているため、平均化処理算出値２９よりも、合成復調信号の平均化処理算出値３２の値が低く算出されることがあっても、ｔ０〜ｔ１においては平均化処理算出値３２を、ｔ１〜ｔ２においては平均化処理算出値２９を出力するため、出力における受信品質を向上させることができるのである。   However, in the receiving apparatus of the present embodiment, the comparison / selection output unit 26 demodulates when the averaging process calculation value 29 is the best among the averaging process calculation values 29, 30, and 32 as shown in FIG. The demodulated signal from the unit 19 is output. When the average processing calculation value 30 is the best, the demodulated signal from the demodulator 20 is output. When the averaging processing calculation value 32 is the best, the composite demodulated signal from the synthesis unit 23 is output. Therefore, even if the value of the average processing calculation value 32 of the composite demodulated signal is calculated to be lower than the average processing calculation value 29, the average processing calculation value at t0 to t1. 32, since the average processing calculation value 29 is output from t1 to t2, the reception quality in the output can be improved.

さらにこの効果は、携帯端末にこの受信装置を用いる場合などにおいて、特に有効に発揮される。即ち、携帯端末の場合は、例えば外部アンテナと内部アンテナなど、二つのアンテナの利得が異なることに起因し、両者が受信する信号の受信品質が大きく異なる場合や、二つのアンテナの指向性が異なることに起因し、受信端末の向きによって両者が受信する信号の受信品質が大きく異なる場合などが多々有るため、本発明の効果が特に有効に発揮される。なお、その他の電子機器においても本発明の効果は有用である。   Furthermore, this effect is particularly effective when the receiving device is used for a portable terminal. That is, in the case of a portable terminal, for example, when the gains of two antennas such as an external antenna and an internal antenna are different, the reception quality of signals received by the two antennas is greatly different, or the directivity of the two antennas is different. Because of this, there are many cases where the reception quality of the signals received by the two differs greatly depending on the orientation of the receiving terminal, and therefore the effect of the present invention is particularly effectively exhibited. Note that the effects of the present invention are also useful in other electronic devices.

なお、図４に示すごとく、図１における比較選択出力部２６の代わりに比較出力部２６ａを平均化処理部２１ｂ、２２ｂ、２５ｂに接続するとともに、平均化処理部２５ｂからの平均化処理算出値が平均化処理部２１ｂ（あるいは平均化処理部２２ｂ）からの平均化処理算出値よりも悪い値となる場合には、その情報を合成比算出部２３にフィードバックし、復調部１９による復調信号と復調部２０による復調信号との合成比を１：０（あるいは０：１）となるよう制御し、この合成比に基づいて合成部２４が合成復調信号を作成し、この合成復調信号を比較出力部２６ａに伝達し、この比較出力部２６ａがこの合成復調信号を出力する構成としても構わない。   As shown in FIG. 4, the comparison output unit 26a is connected to the averaging processing units 21b, 22b, and 25b instead of the comparison / selection output unit 26 in FIG. 1, and the average processing calculation value from the averaging processing unit 25b is used. Is a value worse than the average processing calculation value from the averaging processing unit 21b (or the averaging processing unit 22b), the information is fed back to the synthesis ratio calculation unit 23 and the demodulated signal from the demodulating unit 19 The demodulating unit 20 controls the demodulated signal to have a synthesis ratio of 1: 0 (or 0: 1), the synthesizing unit 24 creates a synthesized demodulated signal based on the synthesized ratio, and outputs the synthesized demodulated signal as a comparison output. The comparison output unit 26a may be configured to output the combined demodulated signal.

また、図５に示すごとく、比較出力部２６ａの代わりに比較部２６ｂを平均化処理部２１ｂ、２２ｂ、２５ｂに接続するとともに、平均化処理部２５ｂからの平均化処理算出値が平均化処理部２１ｂ（あるいは平均化処理部２２ｂ）からの平均化処理算出値よりも悪い値となる場合には、その情報を合成比算出部２３にフィードバックし、復調部１９による復調信号と復調部２０による復調信号との合成比を１：０（あるいは０：１）と成るよう制御し、この合成比に基づいて合成部２４が合成復調信号を作成するとともに、直接出力する構成としても構わない。   Further, as shown in FIG. 5, the comparison unit 26b is connected to the averaging processing units 21b, 22b, and 25b instead of the comparison output unit 26a, and the average processing calculation value from the averaging processing unit 25b is the averaging processing unit. If the value is worse than the average processing calculation value from 21b (or the averaging processing unit 22b), the information is fed back to the synthesis ratio calculation unit 23, and the demodulated signal from the demodulating unit 19 and the demodulated by the demodulating unit 20 are demodulated. The composition ratio with the signal may be controlled to be 1: 0 (or 0: 1), and the composition unit 24 may create a composite demodulated signal based on the composition ratio and directly output it.

さらに、以下に示すような構成とすることにより、消費電力を削減することができるという効果を得ることができる。   Furthermore, by adopting a configuration as shown below, it is possible to obtain an effect that power consumption can be reduced.

まず、図１において、平均化処理部２５ｂからの平均化処理算出値が任意の値よりも良い場合には、それを比較選択出力部２６が検出するとともに、平均化処理部２１ｂからの平均化処理算出値及び平均化処理部２２ｂからの平均化処理算出値との比較動作を行うことなく、合成部２４からの合成復調信号を出力する構成とすることにより、当該比較動作で消費していた電力を削減することができる。   First, in FIG. 1, when the average processing calculation value from the averaging processing unit 25b is better than an arbitrary value, the comparison / selection output unit 26 detects it and averages from the averaging processing unit 21b. A comparison demodulated signal from the synthesis unit 24 is output without performing a comparison operation between the process calculation value and the averaging process calculation value from the averaging processing unit 22b, thereby consuming the comparison operation. Electric power can be reduced.

ここで、任意の値とは、ある閾値を指すものであり、変調方式の違いや本受信装置自体の移動速度により、適宜設定するものである。   Here, the arbitrary value refers to a certain threshold value, and is set as appropriate depending on the difference in modulation method and the moving speed of the receiving apparatus itself.

なお、平均化処理部２１ｂからの平均化処理算出値が任意の値よりも良い場合には、比較選択出力部２６が上述の平均動作を行うことなく、復調部１９による復調信号を出力し、平均化処理部２２ｂからの平均化処理算出値が任意の値よりも良い場合には、比較選択出力部２６が上述の平均動作を行うことなく、復調部２０による復調信号を出力する構成としても、電力削減の効果を得ることができる。   If the average processing calculation value from the averaging processing unit 21b is better than an arbitrary value, the comparison / selection output unit 26 outputs the demodulated signal by the demodulating unit 19 without performing the above-described averaging operation, When the average processing calculation value from the averaging processing unit 22b is better than an arbitrary value, the comparison / selection output unit 26 may output a demodulated signal from the demodulating unit 20 without performing the above-described averaging operation. The effect of reducing power can be obtained.

さらに、そのような場合においては、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも一方の動作を停止するとともに、合成部２４からの合成復調信号を任意時間出力する構成とすることにより、当該合成復調信号を受信品質算出部２５ａにおいて受信品質算出値を算出する電力、又は平均化処理部２５ｂにおいて平均化処理算出値を算出する電力を削減することができる。   Further, in such a case, by stopping the operation of at least one of the reception quality calculation unit 25a and the averaging processing unit 25b and outputting the combined demodulated signal from the combining unit 24 for an arbitrary time, It is possible to reduce the power for calculating the reception quality calculation value in the reception quality calculation unit 25a or the power for calculating the averaging process calculation value in the averaging processing unit 25b.

なお、このように平均化処理部２５ｂからの平均化処理算出値が任意の値を上回るか否かを判断する構成としても構わないが、比較選択出力部２６の後段に他の受信品質算出部を設け、その値が任意の値を上回るか否かを判断する構成としても構わない。   In addition, although it may be configured to determine whether or not the average processing calculation value from the averaging processing unit 25b exceeds an arbitrary value in this way, other reception quality calculation units are provided at the subsequent stage of the comparison selection output unit 26. And determining whether the value exceeds an arbitrary value may be adopted.

また、復調部１９からの復調信号の受信品質が、復調部２０からの復調信号の受信品質よりも常に高く、比較選択出力部２６が復調部１９からの復調信号を任意時間継続して出力するような場合には、復調部２０、受信品質算出部２２ａ、平均化処理部２２ｂ、合成比算出部２３、合成部２４、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   Further, the reception quality of the demodulated signal from the demodulator 19 is always higher than the received quality of the demodulated signal from the demodulator 20, and the comparison / selection output unit 26 continuously outputs the demodulated signal from the demodulator 19 for an arbitrary time. In such a case, the operation of at least one of the demodulation unit 20, the reception quality calculation unit 22a, the averaging processing unit 22b, the synthesis ratio calculation unit 23, the synthesis unit 24, the reception quality calculation unit 25a, and the averaging processing unit 25b is performed. By stopping, the power consumed in the stopped part can be reduced.

逆に、復調部２０からの復調信号の受信品質が、復調部１９からの復調信号の受信品質よりも常に高く、比較選択出力部２６が復調部２０からの復調信号を任意時間継続して出力するような場合には、復調部１９、受信品質算出部２１ａ、平均化処理部２１ｂ、合成比算出部２３、合成部２４、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   Conversely, the reception quality of the demodulated signal from the demodulator 20 is always higher than the reception quality of the demodulated signal from the demodulator 19, and the comparison / selection output unit 26 continuously outputs the demodulated signal from the demodulator 20 for an arbitrary time. In such a case, the operation of at least one of the demodulation unit 19, the reception quality calculation unit 21a, the averaging processing unit 21b, the synthesis ratio calculation unit 23, the synthesis unit 24, the reception quality calculation unit 25a, and the averaging processing unit 25b. By stopping the operation, it is possible to reduce the power consumed in the stopped portion.

また、図４において、平均化処理部２５ｂからの平均化処理算出値が任意の値よりも良い場合には、それを比較出力部２６ａが検出するとともに、平均化処理部２１ｂからの平均化処理算出値及び平均化処理部２２ｂからの平均化処理算出値との比較動作を行うことなく、合成部２４からの合成復調信号を出力する構成とすることにより、当該比較動作で消費していた電力を削減することができる。   In FIG. 4, when the average processing calculation value from the averaging processing unit 25b is better than an arbitrary value, the comparison output unit 26a detects it and the averaging processing from the averaging processing unit 21b. The power consumed in the comparison operation is configured by outputting the combined demodulated signal from the combining unit 24 without performing the comparison operation with the calculated value and the average processing calculated value from the averaging processing unit 22b. Can be reduced.

さらに、そのような場合においては、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも一方の動作を停止するとともに、合成部２４からの合成復調信号を任意時間出力する構成とすることにより、当該合成復調信号を受信品質算出部２５ａにおいて受信品質算出値を算出する電力、又は平均化処理部２５ｂにおいて平均化処理算出値を算出する電力を削減することができる。   Further, in such a case, by stopping the operation of at least one of the reception quality calculation unit 25a and the averaging processing unit 25b and outputting the combined demodulated signal from the combining unit 24 for an arbitrary time, It is possible to reduce the power for calculating the reception quality calculation value in the reception quality calculation unit 25a or the power for calculating the averaging process calculation value in the averaging processing unit 25b.

なお、このように平均化処理部２５ｂからの平均化処理算出値が任意の値を上回るか否かを判断する構成としても構わないが、比較出力部２６ａの後段に他の受信品質算出部を設け、その値が任意の値を上回るか否かを判断する構成としても構わない。   In addition, although it may be configured to determine whether or not the average processing calculation value from the averaging processing unit 25b exceeds an arbitrary value in this way, another reception quality calculation unit is provided at the subsequent stage of the comparison output unit 26a. It may be configured to determine whether or not the value exceeds an arbitrary value.

また、復調部１９からの復調信号の受信品質が、復調部２０からの復調信号の受信品質よりも常に高く、合成比算出部における合成比が任意時間継続して１：０である場合には、復調部２０、受信品質算出部２２ａ、平均化処理部２２ｂ、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   Further, when the reception quality of the demodulated signal from the demodulator 19 is always higher than the reception quality of the demodulated signal from the demodulator 20, and the combining ratio in the combining ratio calculator is 1: 0 continuously for an arbitrary time. The power consumed in the stopped part by stopping at least one of the operation of the demodulator 20, the reception quality calculator 22a, the averaging processor 22b, the reception quality calculator 25a, and the averaging processor 25b Can be reduced.

逆に、復調部２０からの復調信号の受信品質が、復調部１９からの復調信号の受信品質よりも常に高く、合成比算出部における合成比が任意時間継続して０：１である場合には、復調部１９、受信品質算出部２１ａ、平均化処理部２１ｂ、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   On the contrary, when the reception quality of the demodulated signal from the demodulator 20 is always higher than the reception quality of the demodulated signal from the demodulator 19, and the synthesis ratio in the synthesis ratio calculation unit is 0: 1 continuously for an arbitrary time. Was consumed at the stopped part by stopping the operation of at least one of the demodulator 19, the reception quality calculator 21a, the averaging processor 21b, the reception quality calculator 25a, and the averaging processor 25b. Electric power can be reduced.

さらに、図５において、平均化処理部２５ｂからの平均化処理算出値が任意の値よりも良い場合には、それを比較部２６ｂが検出するとともに、平均化処理部２１ｂからの平均化処理算出値及び平均化処理部２２ｂからの平均化処理算出値との比較動作を行うことなく、合成部２４が合成復調信号を出力する構成とすることにより、当該比較動作で消費していた電力を削減することができる。   Furthermore, in FIG. 5, when the average processing calculation value from the averaging processing unit 25b is better than an arbitrary value, the comparison unit 26b detects it and calculates the averaging processing from the averaging processing unit 21b. The power consumed in the comparison operation is reduced by adopting a configuration in which the combining unit 24 outputs the combined demodulated signal without performing the comparison operation with the value and the average processing calculation value from the averaging processing unit 22b. can do.

さらに、そのような場合においては、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも一方の動作を停止するとともに、合成部２４が合成復調信号を任意時間出力する構成とすることにより、当該合成復調信号を受信品質算出部２５ａにおいて受信品質算出値を算出する電力、又は平均化処理部２５ｂにおいて平均化処理算出値を算出する電力を削減することができる。   Further, in such a case, the operation of at least one of the reception quality calculation unit 25a and the averaging processing unit 25b is stopped, and the synthesis unit 24 outputs a synthesized demodulated signal for an arbitrary time. It is possible to reduce the power for calculating the reception quality calculation value for the combined demodulated signal in the reception quality calculation unit 25a or the power for calculating the average processing calculation value in the averaging processing unit 25b.

なお、このように平均化処理部２５ｂからの平均化処理算出値が任意の値を上回るか否かを判断する構成としても構わないが、比較部２６ｂの後段に他の受信品質算出部を設け、その値が任意の値を上回るか否かを判断する構成としても構わない。   It should be noted that although it is possible to determine whether or not the average processing calculation value from the averaging processing unit 25b exceeds an arbitrary value in this way, another reception quality calculation unit is provided after the comparison unit 26b. It is also possible to determine whether or not the value exceeds an arbitrary value.

また、復調部１９からの復調信号の受信品質が、復調部２０からの復調信号の受信品質よりも常に高く、合成比算出部における合成比が任意時間継続して１：０である場合には、復調部２０、受信品質算出部２２ａ、平均化処理部２２ｂ、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   Further, when the reception quality of the demodulated signal from the demodulator 19 is always higher than the reception quality of the demodulated signal from the demodulator 20, and the combining ratio in the combining ratio calculator is 1: 0 continuously for an arbitrary time. The power consumed in the stopped part by stopping at least one of the operation of the demodulator 20, the reception quality calculator 22a, the averaging processor 22b, the reception quality calculator 25a, and the averaging processor 25b Can be reduced.

逆に、復調部２０からの復調信号の受信品質が、復調部１９からの復調信号の受信品質よりも常に高く、合成比算出部における合成比が任意時間継続して０：１である場合には、復調部１９、受信品質算出部２１ａ、平均化処理部２１ｂ、受信品質算出部２５ａ、平均化処理部２５ｂの内少なくとも１つの動作を停止することにより、停止させた部位で消費していた電力を削減することができる。   On the contrary, when the reception quality of the demodulated signal from the demodulator 20 is always higher than the reception quality of the demodulated signal from the demodulator 19, and the synthesis ratio in the synthesis ratio calculation unit is 0: 1 continuously for an arbitrary time. Was consumed at the stopped part by stopping the operation of at least one of the demodulator 19, the reception quality calculator 21a, the averaging processor 21b, the reception quality calculator 25a, and the averaging processor 25b. Electric power can be reduced.

本発明の受信装置は、その出力における受信品質を向上させることができるという効果を有し、各種電子機器において有用である。   The receiving apparatus of the present invention has an effect that reception quality at the output can be improved, and is useful in various electronic devices.

本発明の実施の形態１における受信装置のブロック図Block diagram of receiving apparatus in embodiment 1 of the present invention （ａ）〜（ｃ）は本発明の実施の形態１における受信装置の受信品質算出値及び平均化処理算出値の時間的特性図(A)-(c) is the time characteristic figure of the reception quality calculation value of the receiver in Embodiment 1 of this invention, and an averaging process calculation value 本発明の実施の形態１における受信装置の平均化処理算出値の時間的特性図Temporal characteristic diagram of averaging processing calculation value of receiving apparatus in embodiment 1 of the present invention 本発明の実施の形態１における受信装置の他の実施例を示すブロック図Block diagram showing another example of the receiving apparatus according to Embodiment 1 of the present invention. 本発明の実施の形態１における受信装置の他の実施例を示すブロック図Block diagram showing another example of the receiving apparatus according to Embodiment 1 of the present invention. 従来の受信装置のブロック図Block diagram of conventional receiver （ａ）（ｂ）は従来の受信装置におけるアンテナの配置を示す上面図(A) and (b) are the top views which show arrangement | positioning of the antenna in the conventional receiver. （ａ）（ｂ）は従来の受信装置における受信品質算出値及び平均化処理算出値の時間的特性図(A) and (b) are temporal characteristic diagrams of reception quality calculation values and averaging processing calculation values in a conventional receiver.

符号の説明Explanation of symbols

１７ 受信端子
１８ 受信端子
１９ 復調部
２０ 復調部
２１ａ 受信品質算出部
２１ｂ 平均化処理部
２２ａ 受信品質算出部
２２ｂ 平均間処理部
２３ 合成比算出部
２４ 合成部
２５ａ 受信品質算出部
２５ｂ 平均化処理部
２６ 比較選択出力部 DESCRIPTION OF SYMBOLS 17 Reception terminal 18 Reception terminal 19 Demodulation part 20 Demodulation part 21a Reception quality calculation part 21b Averaging process part 22a Reception quality calculation part 22b Inter-average process part 23 Combining ratio calculation part 24 Composition part 25a Reception quality calculation part 25b Average process part 26 Comparison selection output section

Claims (7)

第１の信号を受信する第１の受信端子と、
前記第１の信号から第１の復調信号を作成する第１の復調部と、
前記第１の復調信号から第１の受信品質算出値を算出する第１の受信品質算出部と、
前記第１の受信品質算出値から第１の平均化処理算出値を算出する第１の平均化処理部と、
第２の信号を受信する第２の受信端子と、
前記第２の信号から第２の復調信号を作成する第２の復調部と、
前記第２の復調信号から第２の受信品質算出値を算出する第２の受信品質算出部と、
前記第２の受信品質算出値から第２の平均化処理算出値を算出する第２の平均化処理部と、
前記第１の平均化処理算出値と前記第２の平均化処理算出値から
前記第１の復調信号と前記第２の復調信号との合成比を算出する合成比算出部と、
前記合成比に基づき前記第１の復調信号と前記第２の復調信号とを合成して
合成復調信号を作成する合成部とを備え、
前記合成復調信号から第３の受信品質算出値を算出する第３の受信品質算出部と、
前記第３の受信品質算出値から第３の平均化処理算出値を算出する第３の平均化処理部と、
前記第１の平均化処理算出値と前記第２の平均化処理算出値と前記第３の平均化処理算出値とを比較する比較選択出力部とを設け、
この比較選択出力部は、
前記第１の平均化処理算出値と前記第２の平均化処理算出値と前記第３の平均化処理算出値の内、
前記第１の平均化処理算出値が最も良い場合には前記第１の復調信号を出力し、
前記第２の平均化処理算出値が最も良い場合には前記第２の復調信号を出力し、
前記第３の平均化処理算出値が最も良い場合には前記合成復調信号を出力する構成とした受信装置。 A first receiving terminal for receiving a first signal;
A first demodulator that creates a first demodulated signal from the first signal;
A first reception quality calculation unit for calculating a first reception quality calculation value from the first demodulated signal;
A first averaging processing unit that calculates a first averaging processing calculation value from the first reception quality calculation value;
A second receiving terminal for receiving a second signal;
A second demodulator that creates a second demodulated signal from the second signal;
A second reception quality calculation unit for calculating a second reception quality calculation value from the second demodulated signal;
A second averaging processing unit for calculating a second averaging processing calculation value from the second reception quality calculation value;
A synthesis ratio calculator for calculating a synthesis ratio of the first demodulated signal and the second demodulated signal from the first averaged process calculated value and the second averaged process calculated value;
A combining unit that combines the first demodulated signal and the second demodulated signal based on the combining ratio to create a combined demodulated signal;
A third reception quality calculation unit for calculating a third reception quality calculation value from the combined demodulated signal;
A third averaging processing unit for calculating a third average processing calculation value from the third reception quality calculation value;
A comparison / selection output unit for comparing the first averaging process calculation value, the second averaging process calculation value, and the third averaging process calculation value;
This comparison / selection output unit
Of the first averaging process calculation value, the second averaging process calculation value, and the third averaging process calculation value,
When the first average processing calculation value is the best, output the first demodulated signal,
When the second average processing calculation value is the best, output the second demodulated signal,
A receiving apparatus configured to output the combined demodulated signal when the third average processing calculation value is the best. 第３の平均化処理算出値が任意の値よりも良い場合には、
比較選択出力部が第１の平均化処理算出値と第２の平均化処理算出値と第３の平均化処理算出値とを比較することなく、
合成復調信号を出力し、
第１の平均化処理算出値が任意の値よりも良い場合には、
比較選択出力部が第１の平均化処理算出値と第２の平均化処理算出値と第３の平均化処理算出値とを比較することなく、
第１の復調信号を出力し、
第２の平均化処理算出値が任意の値よりも良い場合には、
比較選択出力部が第１の平均化処理算出値と第２の平均化処理算出値と第３の平均化処理算出値とを比較することなく、
第２の復調信号を出力する構成とした請求項１に記載の受信装置。 When the third average processing calculation value is better than an arbitrary value,
Without the comparison selection output unit comparing the first averaging process calculated value, the second averaging process calculated value, and the third averaging process calculated value,
Outputs a composite demodulated signal,
When the first averaging process calculated value is better than an arbitrary value,
Without the comparison selection output unit comparing the first averaging process calculated value, the second averaging process calculated value, and the third averaging process calculated value,
Outputting a first demodulated signal;
When the second average processing calculation value is better than an arbitrary value,
Without the comparison selection output unit comparing the first averaging process calculated value, the second averaging process calculated value, and the third averaging process calculated value,
The receiving apparatus according to claim 1, wherein the receiving apparatus is configured to output a second demodulated signal. 第３の平均化処理算出値が任意の値よりも良い場合には、
第３の受信品質算出部と第３の平均化処理部の内少なくとも一方の動作を停止する構成とした請求項２に記載の受信装置。 When the third average processing calculation value is better than an arbitrary value,
The receiving apparatus according to claim 2, wherein the operation of at least one of the third reception quality calculation unit and the third averaging processing unit is stopped. 比較選択出力部が第１の復調信号を任意時間継続して出力した場合には、
第２の復調部、第２の受信品質算出部、第２の平均処理部、合成比算出部、合成部、第３の受信品質算出部、第３の平均化処理部の内少なくとも１つの動作を停止し、
比較選択出力部が第２の復調信号を任意時間継続して出力した場合には、
第１の復調部、第１の受信品質算出部、第１の平均処理部、合成比算出部、合成部、第３の受信品質算出部、第３の平均化処理部の内少なくとも１つの動作を停止する構成とした請求項１に記載の受信装置。 When the comparison selection output unit continuously outputs the first demodulated signal for an arbitrary time,
Operation of at least one of the second demodulation unit, the second reception quality calculation unit, the second average processing unit, the synthesis ratio calculation unit, the synthesis unit, the third reception quality calculation unit, and the third averaging processing unit Stop
When the comparison selection output unit continuously outputs the second demodulated signal for an arbitrary time,
Operation of at least one of the first demodulation unit, the first reception quality calculation unit, the first average processing unit, the synthesis ratio calculation unit, the synthesis unit, the third reception quality calculation unit, and the third averaging processing unit The receiving device according to claim 1, wherein the receiver is configured to stop. 受信品質算出部はＡＧＣ電圧値を用いて受信品質を算出する請求項１から４の内いずれかに記載の受信装置。 The receiving apparatus according to any one of the reception quality calculator from claim 1 to calculate the reception quality using the AGC voltage value 4. 受信品質算出部はＣ／Ｎ比を用いて受信品質を算出する請求項１から４の内いずれかに記載の受信装置。 The receiving apparatus according to any one of the reception quality calculator from claim 1 to calculate the reception quality using a C / N ratio of 4. 第１の信号を受信する第１のアンテナと、
前記第１の信号から第１の復調信号を作成する第１の復調部と、
前記第１の復調信号から第１の受信品質算出値を算出する第１の受信品質算出部と、
前記第１の受信品質算出値から第１の平均化処理算出値を算出する第１の平均化処理部と、
第２の信号を受信する第２のアンテナと、
前記第２の信号から第２の復調信号を作成する第２の復調部と、
前記第２の復調信号から第２の受信品質算出値を算出する第２の受信品質算出部と、
前記第２の受信品質算出値から第２の平均化処理算出値を算出する第２の平均化処理部と、
前記第１の平均化処理算出値と前記第２の平均化処理算出値から
前記第１の復調信号と前記第２の復調信号との合成比を算出する合成比算出部と、
前記合成比に基づき前記第１の復調信号と前記第２の復調信号とを合成して
合成復調信号を作成する合成部とを備え、
前記合成復調信号から第３の受信品質算出値を算出する第３の受信品質算出部と、
前記第３の受信品質算出値から第３の平均化処理算出値を算出する第３の平均化処理部と、
前記第１の平均化処理算出値と前記第２の平均化処理算出値と前記第３の平均化処理算出値とを比較する比較選択出力部とを設け、
この比較選択出力部は、
前記第１の平均化処理算出値と前記第２の平均化処理算出値と前記第３の平均化処理算出値の内、
前記第１の平均化処理算出値が最も良い場合には前記第１の復調信号を出力し、
前記第２の平均化処理算出値が最も良い場合には前記第２の復調信号を出力し、
前記第３の平均化処理算出値が最も良い場合には前記合成復調信号を出力する構成とした電子機器。 A first antenna for receiving a first signal;
A first demodulator that creates a first demodulated signal from the first signal;
A first reception quality calculation unit for calculating a first reception quality calculation value from the first demodulated signal;
A first averaging processing unit that calculates a first averaging processing calculation value from the first reception quality calculation value;
A second antenna for receiving a second signal;
A second demodulator that creates a second demodulated signal from the second signal;
A second reception quality calculation unit for calculating a second reception quality calculation value from the second demodulated signal;
A second averaging processing unit for calculating a second averaging processing calculation value from the second reception quality calculation value;
A synthesis ratio calculator for calculating a synthesis ratio of the first demodulated signal and the second demodulated signal from the first averaged process calculated value and the second averaged process calculated value;
A combining unit that combines the first demodulated signal and the second demodulated signal based on the combining ratio to create a combined demodulated signal;
A third reception quality calculation unit for calculating a third reception quality calculation value from the combined demodulated signal;
A third averaging processing unit for calculating a third average processing calculation value from the third reception quality calculation value;
A comparison / selection output unit for comparing the first averaging process calculation value, the second averaging process calculation value, and the third averaging process calculation value;
This comparison / selection output unit
Of the first averaging process calculation value, the second averaging process calculation value, and the third averaging process calculation value,
When the first average processing calculation value is the best, output the first demodulated signal,
When the second average processing calculation value is the best, output the second demodulated signal,
An electronic apparatus configured to output the combined demodulated signal when the third average processing calculation value is the best.
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