Title:
映像再生装置
Document Type and Number:
Japanese Patent JP4589709
Kind Code:
B2
Abstract:
A video playback device of decoding encoded video data is additionally provided with a compression circuit and a decompression circuit in an existing encoded video decoding circuit. In the compression circuit, a frequency transform circuit transforms played-back video data obtained from the encoded video decoding circuit into frequency coefficient data, which is in turn subjected to IDCT having a reduced order in a frequency compression circuit to obtain compressed video data. The compressed video data, which is image space data having a reduced image size, is stored in a frame memory. The decompression circuit comprises a frequency decompression circuit and an inverse frequency transform circuit which performs a process inverse to that of the compression circuit. The compressed video data from the frame memory is converted by a video output circuit into data which can be displayed, and the resultant data is output to a video display device. Therefore, the additional components are provided while the existing device is used as it is, thereby reducing the size of a frame memory.
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Inventors:
Seiichi Muroya
Tadashi Shibata
Tadashi Shibata
Application Number:
JP2004357661A
Publication Date:
December 01, 2010
Filing Date:
December 10, 2004
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04N19/50; H04N7/30; H04N7/32; H04N19/126; H04N19/132; H04N19/134; H04N19/136; H04N19/137; H04N19/14; H04N19/196; H04N19/40; H04N19/426; H04N19/593; H04N19/60; H04N19/61; H04N19/625; H04N19/91
Domestic Patent References:
| JP2003348598A | ||||
| JP2000050272A | ||||
| JP2000078568A | ||||
| JP10098611A | ||||
| JP10098731A | ||||
| JP2076472A |
Attorney, Agent or Firm:
Hiroshi Maeda
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa
Hiroshi Takeuchi
Takahisa Shimada
Yuji Takeuchi
Katsumi Imae
Kazunari Ninomiya
Tomoo Harada
Iseki Katsumori
Seki Kei
Yasuya Sugiura
Daisuke Kawabe
Masanori Hasegawa
Tsuguya Iwashita
Koji Fukumoto
Ryo Maeda
Mawaki Hachizo
Yukichi Matsunaga
Kenji Kawakita
Shohei Okazawa