JP2006033056A5 - - Google Patents
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- JP2006033056A5 JP2006033056A5 JP2004204652A JP2004204652A JP2006033056A5 JP 2006033056 A5 JP2006033056 A5 JP 2006033056A5 JP 2004204652 A JP2004204652 A JP 2004204652A JP 2004204652 A JP2004204652 A JP 2004204652A JP 2006033056 A5 JP2006033056 A5 JP 2006033056A5
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- antenna
- selection circuit
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Claims (10)
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
前記アンテナ選択回路が選択しているアンテナの受信電力が所定値以下の場合、前記アンテナ選択回路に複数のアンテナを選択させるアンテナ制御部とを備えることを特徴とするアンテナ受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
An antenna receiving apparatus comprising: an antenna control unit that causes the antenna selection circuit to select a plurality of antennas when reception power of an antenna selected by the antenna selection circuit is equal to or less than a predetermined value .
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、
アンテナ選択回路が選択したアンテナによる受信信号のＯＦＤＭ（直交周波数多重）復調を行うＯＦＤＭ復調部とを具備し、
前記選択基準は、ＯＦＤＭ復調部後のＣＮ（キャリア／ノイズ比）であることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, and an antenna controller for selectively even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna to the antenna selection circuit,
The OFDM (orthogonal frequency division multiplexing) demodulation of the received signal by the antenna by the antenna selection circuit is selected and a row Cormorant O FDM demodulator,
The receiving apparatus according to claim 1, wherein the selection criterion is a CN (carrier / noise ratio) after the OFDM demodulator .
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、
アンテナ選択回路が選択したアンテナによる受信信号のＯＦＤＭ（直交周波数多重）復調を行って複数キャリア上のパイロットシンボルを生成するＯＦＤＭ復調部とを具備し、
前記選択基準は、該パイロットシンボルに基いて算出される伝送路推定値であることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, and an antenna controller for selectively even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna to the antenna selection circuit,
Comprising a OFDM demodulation section that generates a path for the pilot symbols on multiple carriers performs OFDM (orthogonal frequency division multiplexing) demodulation of the received signal by the antenna by the antenna selecting circuit,
The receiving apparatus according to claim 1, wherein the selection criterion is a channel estimation value calculated based on the pilot symbol .
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、を具備し、
前記切替開始条件は、受信装置を搭載する車両のハンドルの切角が所定値以上、受信装置を搭載する車両に搭載されたジャイロが検出する車両の方向変化が所定値以上、所定の時間周期、及び受信装置を搭載している車両の走行速度が所定値以上の少なくとも１つであることを特徴であることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna equipped with an antenna controller for selectively to the antenna selection circuit,
The switch start condition, the receiving apparatus equipped with a steering wheel of a vehicle of the switching angle is a predetermined value or more on the direction change of the vehicle to be detected is mounted on a gyro vehicle equipped with the receiving device is equal to or greater than a predetermined value, the predetermined time period And the running speed of the vehicle carrying the receiver is at least one more than a predetermined value, The receiver characterized by the above-mentioned.
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、
アンテナ選択回路が選択したアンテナによる受信信号のＯＦＤＭ（直交周波数多重）復調を行うＯＦＤＭ復調部とを具備し、
前記切替開始条件は、ＯＦＤＭ復調部後のＣＮが所定値以下であることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, and an antenna controller for selectively even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna to the antenna selection circuit,
An OFDM demodulator that performs OFDM (orthogonal frequency multiplexing) demodulation of the received signal by the antenna selected by the antenna selection circuit;
The switching start condition is that the CN after the OFDM demodulator is equal to or less than a predetermined value .
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、
アンテナ選択回路が選択したアンテナによる受信信号のＯＦＤＭ（直交周波数多重）復調を行って複数のキャリア上のデータシンボルを生成するＯＦＤＭ復調部と、
該生成されたデータシンボルの誤り訂正を行う誤り訂正部とを具備し、
前記切替開始条件は、該誤り訂正部が訂正したビットの割合が所定値以上、該誤り訂正部が訂正できなかったビットの割合が所定値以上、及び該誤り訂正部が誤りを検出したデータブロックが所定値以上の少なくとも１つであることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, and an antenna controller for selectively even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna to the antenna selection circuit,
An OFDM demodulator for generating data symbols on a plurality of carriers by performing OFDM (Orthogonal Frequency Multiplexing) demodulation of a received signal by an antenna selected by an antenna selection circuit;
An error correction unit for correcting an error of the generated data symbol,
The switching start condition is that a ratio of bits corrected by the error correction unit is a predetermined value or more, a ratio of bits that the error correction unit cannot correct is a predetermined value or more, and a data block in which the error correction unit detects an error. Is at least one greater than or equal to a predetermined value .
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部と、
アンテナ選択回路が選択したアンテナによる受信信号のＯＦＤＭ（直交周波数多重）復調を行って複数のキャリア上のデータシンボルを生成するＯＦＤＭ復調部と、
該生成されたデータシンボルの誤り訂正を行う誤り訂正部と、
前記誤り訂正部の出力をトランスポートストリームとみなして、該トランスポートストリームから映像信号を生成するＴＳデコード回路とを具備し、
前記切替開始条件は、該ＴＳデコード回路において検出された誤りの程度であることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, and an antenna controller for selectively even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna to the antenna selection circuit,
An OFDM demodulator for generating data symbols on a plurality of carriers by performing OFDM (Orthogonal Frequency Multiplexing) demodulation of a received signal by an antenna selected by an antenna selection circuit;
An error correction unit that performs error correction of the generated data symbol;
The output of the error correction unit is regarded as a transport stream, and a TS decoder circuit for generating a video signal from the transport stream,
The receiving apparatus characterized in that the switching start condition is a degree of error detected in the TS decoding circuit.
前記複数のアンテナの少なくとも１つを選択するアンテナ選択回路と、
所定の切替開始条件が満たされるとき、所定の選択基準に従って少なくとも１つのアンテナを決定し、決定されたアンテナを該アンテナ選択回路に選択させるアンテナ制御部とを具備し、
前記アンテナ制御部は、受信中の放送の放送パラメータに応じて前記選択基準及び前記切替開始条件の少なくとも一方を変えることを特徴とする受信装置。 A plurality of antennas arranged to have different directivities , and
An antenna selection circuit for selecting at least one of the plurality of antennas,
When a predetermined switch start condition is satisfied, even without least in accordance with predetermined selection criteria to determine the one antenna, the determined antenna comprising an antenna controller for selectively to the antenna selection circuit,
The antenna control unit changes at least one of the selection criterion and the switching start condition according to a broadcast parameter of a broadcast being received.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004204652A JP2006033056A (en) | 2004-07-12 | 2004-07-12 | Receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004204652A JP2006033056A (en) | 2004-07-12 | 2004-07-12 | Receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006033056A JP2006033056A (en) | 2006-02-02 |
| JP2006033056A5 true JP2006033056A5 (en) | 2007-08-16 |
Family
ID=35898932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004204652A Pending JP2006033056A (en) | 2004-07-12 | 2004-07-12 | Receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2006033056A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7636593B2 (en) | 2004-02-04 | 2009-12-22 | Fujitsu Ten Limited | Receiver |
| JP5006097B2 (en) | 2007-04-24 | 2012-08-22 | 京セラ株式会社 | Reception control method and wireless communication apparatus |
| CN101682389B (en) | 2007-05-29 | 2013-07-10 | 三菱电机株式会社 | Digital broadcast receiver |
| JP5067379B2 (en) * | 2009-02-19 | 2012-11-07 | 株式会社デンソー | In-vehicle communication device and antenna selection method for in-vehicle communication device |
| JP5351327B2 (en) | 2010-02-24 | 2013-11-27 | パナソニック株式会社 | Diversity receiver |
| US20120064841A1 (en) * | 2010-09-10 | 2012-03-15 | Husted Paul J | Configuring antenna arrays of mobile wireless devices using motion sensors |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888619A (en) * | 1994-09-20 | 1996-04-02 | Alpine Electron Inc | Diversity device for fm multiplex broadcast receiver |
| JP3103014B2 (en) * | 1994-12-22 | 2000-10-23 | 三菱電機株式会社 | Receiving machine |
| JP2002033688A (en) * | 2000-07-18 | 2002-01-31 | Clarion Co Ltd | Diversity receiver |
| JP3650334B2 (en) * | 2001-01-16 | 2005-05-18 | シャープ株式会社 | Digital broadcast receiver |
| JP4317335B2 (en) * | 2001-08-06 | 2009-08-19 | 日本放送協会 | Diversity receiver |
| JP4167464B2 (en) * | 2002-01-17 | 2008-10-15 | 富士通テン株式会社 | In-vehicle digital communication receiver |
| JP3996781B2 (en) * | 2002-02-01 | 2007-10-24 | 株式会社日立国際電気 | Diversity receiver for orthogonal frequency division multiplex modulation transmission signal |
| JP4011384B2 (en) * | 2002-04-11 | 2007-11-21 | 株式会社ケンウッド | Diversity receiver |
| JP3642784B2 (en) * | 2002-10-28 | 2005-04-27 | 三菱電機株式会社 | Diversity receiving apparatus and diversity receiving method |
| JP4059762B2 (en) * | 2002-12-11 | 2008-03-12 | 富士通テン株式会社 | Directivity control device for in-vehicle antenna system |
| JP2004312590A (en) * | 2003-04-10 | 2004-11-04 | Sharp Corp | Communication station |
-
2004
- 2004-07-12 JP JP2004204652A patent/JP2006033056A/en active Pending
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