JP2006020305A - 移動通信端末機の映像信号伝送方法 - Google Patents
移動通信端末機の映像信号伝送方法 Download PDFInfo
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- JP2006020305A JP2006020305A JP2005183416A JP2005183416A JP2006020305A JP 2006020305 A JP2006020305 A JP 2006020305A JP 2005183416 A JP2005183416 A JP 2005183416A JP 2005183416 A JP2005183416 A JP 2005183416A JP 2006020305 A JP2006020305 A JP 2006020305A
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- 238000000034 method Methods 0.000 title claims abstract description 118
- 238000010295 mobile communication Methods 0.000 title claims abstract description 33
- 230000008054 signal transmission Effects 0.000 title claims abstract description 28
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000013139 quantization Methods 0.000 description 1
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Abstract
【解決手段】 移動通信端末機の映像信号伝送方法は、映像信号の現在画面を所定サイズのGOBに分割する段階と、前記分割されたGOBのうち伝送される現在GOBが1番目のGOBであるか否かを判断する段階と、前記伝送される現在GOBが1番目のGOBでないと、以前GOBの制御パラメータ値を利用して前記現在GOBのビット量を制御して伝送する段階と、を含む。
画面内GOBアップデート方式と画面間GOBアップデート方式を混合したハイブリッド方式を利用するため、画面間ビット量の変化が大いに減少し、チャンネルのデータ伝送を効率的に利用することができ、使用者に最適の画質を提供する。
【選択図】 図2
Description
Thomas Wiegandら、「IEEE Transactions On Circuits And Systems For Video Technology」、1996年4月号(Vol.6, No.2)
(項目1)
映像信号の現在画面を所定サイズのGOBに分割する段階と、
前記分割されたGOBのうち伝送される現在GOBが1番目のGOBであるか否かを判断する段階と、
前記伝送される現在GOBが1番目のGOBでないと、以前GOBの制御パラメータ値を利用して前記現在GOBのビット量を制御して伝送する段階と、
からなることを特徴とする移動通信端末機の映像信号伝送方法。
(項目2)
前記判断する段階で、前記現在GOBが1番目のGOBであると、以前画面の1番目のGOBの制御パラメータ値を利用して前記現在GOBのビット量を制御して伝送する段階をさらに含むことを特徴とする項目1に記載の移動通信端末機の映像信号伝送方法。
(項目3)
前記現在GOBのビット量が、前記以前画面の前記1番目のGOBの制御パラメータ値、符号化ビット量、前記現在画面の目標ビット量を前記現在画面のGOBの総数で割った値を利用して制御されることを特徴とする項目2に記載の移動通信端末機の映像信号伝送方法。
(項目4)
前記制御パラメータが、ラグランジュ乗数を含むことを特徴とする項目1に記載の移動通信端末機の映像信号伝送方法。
(項目5)
前記映像信号の1番目の画面の1番目のGOBに対する前記制御パラメータ値は任意に割り当てられることを特徴とする項目1に記載の移動通信端末機の映像信号伝送方法。
(項目6)
前記現在GOBのビット量が、
(項目9)
前記Btargetが、前記現在画面の目標ビット量であることを特徴とする項目6に記載の移動通信端末機の映像信号伝送方法。
(項目10)
前記gが、前記現在画面のGOBの数であることを特徴とする項目6に記載の移動通信端末機の映像信号伝送方法。
(項目11)
前記現在GOBのビット量が、前記現在画面内で前記以前GOBの制御パラメータ値、前記以前GOBまで符号化した符号化ビット量の総和、前記以前GOBまで符号化した総符号化ビット量と前記現在GOBまで割り当てられた総目標ビット量との差値を利用して制御されることを特徴とする項目1に記載の移動通信端末機の映像信号伝送方法。
(項目12)
前記現在GOBのビット量が、
(項目15)
前記mが、前記現在画面内で1番目のGOBから前記現在GOBまでのGOBの総数であることを特徴とする項目12に記載の移動通信端末機の映像信号伝送方法。
(項目16)
前記gが、前記現在画面内で前記GOBの総数であることを特徴とする項目12に記載の移動通信端末機の映像信号伝送方法。
(項目17)
前記
(項目18)
前記Bnewtargetが、新しく設定された目標ビット量であることを特徴とする項目17に記載の移動通信端末機の映像信号伝送方法。
(項目19)
前記bが、前記現在画面内で前記現在GOB以後から最終GOBまでのGOBの総数であることを特徴とする項目17に記載の移動通信端末機の映像信号伝送方法。
(項目20)
前記
画面内GOBアップデート方式と画面間GOBアップデート方式を混合したハイブリッド方式を利用するため、画面間ビット量の変化が大いに減少し、チャンネルのデータ伝送を効率的に利用することができ、使用者に最適の画質を提供する。
Claims (21)
- 映像信号の現在画面を所定サイズのGOBに分割する段階と、
前記分割されたGOBのうち伝送される現在GOBが1番目のGOBであるか否かを判断する段階と、
前記伝送される現在GOBが1番目のGOBでないと、以前GOBの制御パラメータ値を利用して前記現在GOBのビット量を制御して伝送する段階と、
からなることを特徴とする移動通信端末機の映像信号伝送方法。 - 前記判断する段階で、前記現在GOBが1番目のGOBであると、以前画面の1番目のGOBの制御パラメータ値を利用して前記現在GOBのビット量を制御して伝送する段階をさらに含むことを特徴とする請求項1に記載の移動通信端末機の映像信号伝送方法。
- 前記現在GOBのビット量が、前記以前画面の前記1番目のGOBの制御パラメータ値、符号化ビット量、前記現在画面の目標ビット量を前記現在画面のGOBの総数で割った値を利用して制御されることを特徴とする請求項2に記載の移動通信端末機の映像信号伝送方法。
- 前記制御パラメータが、ラグランジュ乗数を含むことを特徴とする請求項1に記載の移動通信端末機の映像信号伝送方法。
- 前記映像信号の1番目の画面の1番目のGOBに対する前記制御パラメータ値は任意に割り当てられることを特徴とする請求項1に記載の移動通信端末機の映像信号伝送方法。
- 前記Btargetが、前記現在画面の目標ビット量であることを特徴とする請求項6に記載の移動通信端末機の映像信号伝送方法。
- 前記gが、前記現在画面のGOBの数であることを特徴とする請求項6に記載の移動通信端末機の映像信号伝送方法。
- 前記現在GOBのビット量が、前記現在画面内で前記以前GOBの制御パラメータ値、前記以前GOBまで符号化した符号化ビット量の総和、前記以前GOBまで符号化した総符号化ビット量と前記現在GOBまで割り当てられた総目標ビット量との差値を利用して制御されることを特徴とする請求項1に記載の移動通信端末機の映像信号伝送方法。
- 前記mが、前記現在画面内で1番目のGOBから前記現在GOBまでのGOBの総数であることを特徴とする請求項12に記載の移動通信端末機の映像信号伝送方法。
- 前記gが、前記現在画面内で前記GOBの総数であることを特徴とする請求項12に記載の移動通信端末機の映像信号伝送方法。
- 前記Bnewtargetが、新しく設定された目標ビット量であることを特徴とする請求項17に記載の移動通信端末機の映像信号伝送方法。
- 前記bが、前記現在画面内で前記現在GOB以後から最終GOBまでのGOBの総数であることを特徴とする請求項17に記載の移動通信端末機の映像信号伝送方法。
- 前記制御方法によって画面間発生ビット量の変化を大幅に減らすことを特徴とする請求項11に記載の移動通信端末機の映像信号伝送方法。
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EP1320831A2 (en) | 2000-09-12 | 2003-06-25 | Koninklijke Philips Electronics N.V. | Video coding method |
WO2003002506A1 (fr) * | 2001-06-29 | 2003-01-09 | Asahi Kasei Kabushiki Kaisha | Procédé de production d'éther vinylique fluoré |
KR20030042115A (ko) | 2001-11-21 | 2003-05-28 | 정한승 | 다중 레퍼런스 프레임 기반의 동영상 부호화 방법 |
CN1206864C (zh) * | 2002-07-22 | 2005-06-15 | 中国科学院计算技术研究所 | 结合率失真优化的码率控制的方法及其装置 |
DE10354556B4 (de) | 2002-11-25 | 2008-10-09 | Samsung Electronics Co., Ltd., Suwon | Vorrichtung und Verfahren zum Anzeigen von Bildern in einem mobilen Endgerät |
CN1190969C (zh) * | 2003-03-08 | 2005-02-23 | 华中科技大学 | 一种视频编码比特率控制方法 |
-
2004
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2005
- 2005-06-23 JP JP2005183416A patent/JP4420862B2/ja not_active Expired - Fee Related
- 2005-06-29 US US11/171,968 patent/US7801222B2/en not_active Expired - Fee Related
- 2005-06-29 EP EP05014112.6A patent/EP1624683B1/en not_active Not-in-force
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107623851A (zh) * | 2017-09-01 | 2018-01-23 | 苏州科达科技股份有限公司 | 视频码流传输控制装置及控制方法 |
CN107623851B (zh) * | 2017-09-01 | 2019-12-31 | 苏州科达科技股份有限公司 | 视频码流传输控制装置及控制方法 |
CN113246991A (zh) * | 2021-06-29 | 2021-08-13 | 新石器慧通(北京)科技有限公司 | 用于无人车的远程驾驶端的数据传输方法和装置 |
CN113246991B (zh) * | 2021-06-29 | 2021-11-30 | 新石器慧通(北京)科技有限公司 | 用于无人车的远程驾驶端的数据传输方法和装置 |
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CN1717057A (zh) | 2006-01-04 |
CN100466734C (zh) | 2009-03-04 |
KR100631714B1 (ko) | 2006-10-09 |
JP4420862B2 (ja) | 2010-02-24 |
EP1624683A2 (en) | 2006-02-08 |
EP1624683B1 (en) | 2017-03-01 |
US7801222B2 (en) | 2010-09-21 |
EP1624683A3 (en) | 2010-06-30 |
US20060002478A1 (en) | 2006-01-05 |
KR20060001556A (ko) | 2006-01-06 |
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