Invention Application
US20020186774A1 Process for changing the resolution of MPEG bitstreams, and a system and a computer program product therefor
有权
用于改变MPEG比特流的分辨率的过程，以及用于其的系统和计算机程序产品
- Patent Title: Process for changing the resolution of MPEG bitstreams, and a system and a computer program product therefor
- Patent Title (中): 用于改变MPEG比特流的分辨率的过程，以及用于其的系统和计算机程序产品
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Application No.: US10075087Application Date: 2002-02-11
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Publication No.: US20020186774A1Publication Date: 2002-12-12
- Inventor: Danilo Pau , Daniele Alfonso , Fabrizio Basso , Emiliano Piccinelli , Alessandro Cremonesi
- Applicant: STMicroelectronics, S.r.I.
- Applicant Address: IT Agrate Brianza
- Assignee: STMicroelectronics, S.r.I.
- Current Assignee: STMicroelectronics, S.r.I.
- Current Assignee Address: IT Agrate Brianza
- Priority: EP01830227.3 20010330; EP01830084.8 20010209
- Main IPC: H04N007/12
- IPC: H04N007/12
Abstract:
A process and a system is described for generating an MPEG output bitstream starting from an MPEG input bitstream. The output bitstream has a resolution modified with respect to the resolution of the input bitstream. -In the input bitstream, first portions that substantially do not affect and second portions that do affect resolution variation are distinguished. The second portions are then subjected to a function of modification of the resolution obtained by filtering the second portions in a domain of the discrete cosine transform, and then are transferred to the output bitstream. A corresponding computer program product is also provided.
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