JP2010232912A - 照明光伝送システム - Google Patents
照明光伝送システム Download PDFInfo
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Abstract
【解決手段】光源3から照射する照明光にデータを重畳させて伝送する照明器具Tと、照明光に重畳されたデータを受信する受信装置Rとを有する照明光伝送システムであって、照明器具Tは、交流電源ACから電源の供給を受けて光源3を点灯させる点灯手段5と、該点灯手段5を制御して光源3から照射される照明光に前記データを重畳する制御手段2と、交流電源ACのゼロクロス点を含む所定期間を検出するゼロクロス点検出手段6と、を備え、制御手段2は、ゼロクロス点検出手段6が検出した所定期間において、前記データに該データ内容とは異なるダミーデータを割り込ますように制御する。
【選択図】図1
Description
以下、本実施形態の照明光伝送システムについて、図1および図2を用いて説明する。
R 受信装置
1 信号源
2 制御手段
3 光源
4 直流電源回路
5 点灯手段
6 ゼロクロス点検出手段
Claims (2)
- 光源から照射する照明光にデータを重畳させて伝送する照明器具と、照明光に重畳されたデータを受信する受信装置とを有する照明光伝送システムであって、前記照明器具は、交流電源から電源の供給を受けて前記光源を点灯させる点灯手段と、該点灯手段を制御して前記光源から照射される照明光に前記データを重畳する制御手段と、前記交流電源のゼロクロス点を含む所定期間を検出するゼロクロス点検出手段と、を備え、
前記制御手段は、前記ゼロクロス点検出手段が検出した所定期間において、前記データに該データ内容とは異なるダミーデータを割り込ますことを特徴とする照明光伝送システム。 - 前記制御手段は、前記ダミーデータによって臨界融合周波数の逆数となる時間における前記照明光の平均出力値が略一定となるように前記点灯手段を制御することを特徴とする請求項1に記載の照明光伝送システム。
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JP2009077658A JP2010232912A (ja) | 2009-03-26 | 2009-03-26 | 照明光伝送システム |
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JP2009077658A JP2010232912A (ja) | 2009-03-26 | 2009-03-26 | 照明光伝送システム |
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JP2010232912A true JP2010232912A (ja) | 2010-10-14 |
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JP2009077658A Pending JP2010232912A (ja) | 2009-03-26 | 2009-03-26 | 照明光伝送システム |
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Cited By (21)
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JP2014007624A (ja) * | 2012-06-26 | 2014-01-16 | Sharp Corp | 可視光通信装置及び画像形成装置 |
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Patent Citations (2)
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