JP2010124188A - 無線lsi装置及び妨害波検出回路 - Google Patents
無線lsi装置及び妨害波検出回路 Download PDFInfo
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- JP2010124188A JP2010124188A JP2008295438A JP2008295438A JP2010124188A JP 2010124188 A JP2010124188 A JP 2010124188A JP 2008295438 A JP2008295438 A JP 2008295438A JP 2008295438 A JP2008295438 A JP 2008295438A JP 2010124188 A JP2010124188 A JP 2010124188A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
- H04B1/202—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver by remote control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4126—The peripheral being portable, e.g. PDAs or mobile phones
- H04N21/41265—The peripheral being portable, e.g. PDAs or mobile phones having a remote control device for bidirectional communication between the remote control device and client device
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Selective Calling Equipment (AREA)
- Noise Elimination (AREA)
- Details Of Television Systems (AREA)
- Transceivers (AREA)
Abstract
【構成】本発明による無線LSI装置は、現在送受信チャネルにおけるRSSI信号を取り込む妨害波検出回路を含む。該妨害波検出回路は、該RSSI信号の値が所定の閾値以上であるか否かを判定する電界強度判定器と、判定結果が所定の閾値以上である妨害波の継続時間をカウントする継続時間カウンタと、該継続時間が該継続時間比較値を超えたときに割込信号を生成する継続時間比較器とを含み、該無線LSI装置は該割込信号の生成に応じて現在送受信チャネルの設定を変更する。
【選択図】図5
Description
12、22 ホストマイコン
13、14、13、24 電源ライン
15、25 電源
26 キースキャンユニット
30 無線LSI装置
31 RF送受信部
32 復調部
33 RSSI測定部
34 RF制御部
35 変調部
36 物理層処理部
37 MAC層処理部
38 ホストコントローラ
39 レギュレータ
40 妨害波検出回路
41 電界強度判定器
42 継続時間比較器
43 電界強度閾値レジスタ
44 継続時間比較値レジスタ
45 継続時間カウンタ
100 テレビジョン(TV)装置
200 リモートコントローラ(リモコン)
Claims (5)
- 複数の無線チャネルを有するRF送受信部と、前記無線チャネルうちの何れか1のチャネルを選択し、これを前記RF送受信部の現在送受信チャネルに設定するRF制御部と、を含む無線LSI装置であって、
前記RF送受信部から前記現在送受信チャネルのRSSI信号を取り込む妨害波検出回路を含み、
前記妨害波検出回路は、
前記RSSI信号の値が所定の閾値以上であるか否かを判定する電界強度判定器と、
前記電界強度判定器の判定結果が所定の閾値以上である妨害波の継続時間をカウントする継続時間カウンタと、
前記継続時間カウンタによってカウントされた妨害波の継続時間と所定の継続時間比較値とを比較し、前記妨害波の継続時間が前記継続時間比較値を超えたときに割込信号を生成する継続時間比較器と、
を含み、前記RF制御部は、前記割込信号の生成に応じて前記現在送受信チャネルの設定を変更することを特徴とする無線LSI装置。 - 前記妨害波検出回路は、前記閾値を外部設定可能とする電界強度閾値レジスタと、前記継続時間比較値を外部設定可能とする継続時間比較値レジスタと、をさらに含むことを特徴とする請求項1記載の無線LSI装置。
- 前記継続時間比較値レジスタには、前記継続時間比較値として、前記無線チャネルにおいて送受信される無線信号のパケット長の略2倍に相当する時間が設定されることを特徴とする請求項2記載の無線LSI装置。
- RSSI信号の値に応じて妨害波の有無を検出する妨害波検出回路であって、
前記RSSI信号の値が所定の閾値以上であるか否かを判定する電界強度判定器と、
前記電界強度判定器の判定結果が所定の閾値以上である妨害波の継続時間をカウントする継続時間カウンタと、
前記継続時間カウンタによってカウントされた妨害波の継続時間と所定の継続時間比較値とを比較し、前記妨害波の継続時間が前記継続時間比較値を超えたときに、前記妨害波の存在を示す割込信号を生成する継続時間比較器と、
を含むことを特徴とする妨害波検出回路。 - 前記閾値を外部設定可能とする電界強度閾値レジスタと、前記継続時間比較値を外部設定可能とする継続時間比較値レジスタと、をさらに含むことを特徴とする請求項4記載の妨害波検出回路。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008295438A JP5197317B2 (ja) | 2008-11-19 | 2008-11-19 | 無線lsi装置及び妨害波検出回路 |
US12/619,705 US8538336B2 (en) | 2008-11-19 | 2009-11-17 | Radio LSI device and interfering wave detecting circuit |
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JP2008295438A JP5197317B2 (ja) | 2008-11-19 | 2008-11-19 | 無線lsi装置及び妨害波検出回路 |
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JP2010124188A true JP2010124188A (ja) | 2010-06-03 |
JP5197317B2 JP5197317B2 (ja) | 2013-05-15 |
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Families Citing this family (3)
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WO2011024560A1 (ja) * | 2009-08-28 | 2011-03-03 | オリンパスメディカルシステムズ株式会社 | 受信システム |
US9166730B2 (en) * | 2013-09-26 | 2015-10-20 | Ford Global Technologies, Llc | RF jamming detection and mitigation system |
US11350153B2 (en) * | 2020-04-03 | 2022-05-31 | Charter Communications Operating, Llc | Remote control with automated audio and video selection control |
Citations (2)
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JPH0879203A (ja) * | 1994-09-02 | 1996-03-22 | Matsushita Electric Ind Co Ltd | 雑音抑圧装置 |
JP2008072646A (ja) * | 2006-09-15 | 2008-03-27 | Toshiba Corp | 通信装置およびプログラム |
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JP2002051232A (ja) * | 2000-08-04 | 2002-02-15 | Canon Inc | 受信装置、リモートコントロール装置、受信システム及び被制御装置 |
US6909879B1 (en) * | 2000-08-22 | 2005-06-21 | Cellco Partnership | Methods and apparatus for utilizing radio frequency spectrum simultaneously and concurrently in the presence of co-channel and/or adjacent channel television signals |
US6891496B2 (en) * | 2002-05-03 | 2005-05-10 | Atheros Communications, Inc. | Method and apparatus for physical layer radar pulse detection and estimation |
US8942639B2 (en) * | 2005-03-15 | 2015-01-27 | Qualcomm Incorporated | Interference control in a wireless communication system |
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US7388529B1 (en) * | 2006-01-23 | 2008-06-17 | Marvell International Ltd. | Interference detection using a moving window |
JP4659638B2 (ja) * | 2006-02-17 | 2011-03-30 | Okiセミコンダクタ株式会社 | データ送受信装置およびその制御方法 |
US20090077600A1 (en) * | 2007-09-17 | 2009-03-19 | High Tech Computer Corp. | Mobile computing device and method for switching mobile television channels thereof |
US7929508B1 (en) * | 2008-06-11 | 2011-04-19 | Atheros Communications, Inc. | Radio frequency signal analysis and classification using time-frequency information |
KR101003588B1 (ko) * | 2008-10-31 | 2010-12-22 | 삼성전기주식회사 | 무선 통신용 간섭 검출 장치 및 간섭 검출 방법 |
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Patent Citations (2)
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JPH0879203A (ja) * | 1994-09-02 | 1996-03-22 | Matsushita Electric Ind Co Ltd | 雑音抑圧装置 |
JP2008072646A (ja) * | 2006-09-15 | 2008-03-27 | Toshiba Corp | 通信装置およびプログラム |
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JP5197317B2 (ja) | 2013-05-15 |
US8538336B2 (en) | 2013-09-17 |
US20100123835A1 (en) | 2010-05-20 |
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