Invention Grant
- Patent Title: Moving picture compression/encoding method conversion device and moving picture communication system
- Patent Title (中): 运动图像压缩/编码方法转换装置和运动图像通信系统
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Application No.: US10552398Application Date: 2004-03-19
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Publication No.: US07986732B2Publication Date: 2011-07-26
- Inventor: Kazuhiro Koyama
- Applicant: Kazuhiro Koyama
- Applicant Address: JP Tokyo
- Assignee: NEC Corporation
- Current Assignee: NEC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2003-106614 20030410
- International Application: PCT/JP2004/003794 WO 20040319
- International Announcement: WO2004/093457 WO 20041028
- Main IPC: H04N7/12
- IPC: H04N7/12
Abstract:
To enable to output, from a transcoder, a coded bit stream which can be decoded and reproduced by a receiving side moving image decoding device, irrespective of whether a coding tool or the like of the moving image compression-coding system being used in the receiving side moving image decoding device. A coding control unit outputs coding tool control information based on receiving decoding information received from the receiving side moving image decoding device. A DCT, a quantizer and a variable length encoder change operations based on the coding tool control information. The coding control unit outputs coding start information based on the receiving decoding information. A transcode start judging unit outputs a moving image signal based on the coding start information so as to operate to start transcoding.
Public/Granted literature
- US20060215757A1 Moving picture compression/encoding method conversion device and moving picture communication system Public/Granted day:2006-09-28
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