The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 1998
Filed:
Aug. 14, 1996
Leo Cloutier, Bethesda, MD (US);
Paul Brewer, Arlington, VA (US);
Bell Atlantic Network Services, Inc., Arlington, VA (US);
Abstract
Two MPEG-encoded digital data streams are simultaneously decoded in a digital entertainment terminal to provide Picture-in-Picture (PIP) and Picture-on-Picture (POP) capabilities for a conventional television. A primary MPEG-encoded data stream is decoded using a digital video processor optimized for MPEG2 decoding or a dedicated MPEG2 decoder system. A secondary MPEG-encoded data stream is partially processed by filtering the B frames of the secondary MPEG-encoded data stream and using the corresponding I and P frames in a partial decoding arrangement to obtain decompressed video data providing a limited-resolution representation of a second program. Partial decoding may also be performed using only I frames. The partial decoding may be implemented through execution of software by a general-purpose microprocessor. Alternatively, the media processor may perform the partial decoding during the idle intervals of the dedicated media processor.