Method and apparatus for transitions and other special effects in digital motion video
February 19, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTwo-dimensional discrete cosine transform processor Digital audio-video presentation display system Video signal compression apparatus for independently compressing odd and even fields Interactive educational and training system with concurrent digitized sound and video output Method and apparatus for head tracked display of precomputed stereo images Digital video editor having lost video frame protection Computer generated wipes for video editing systems Segmented video on demand system Remote display of an image by transmitting compressed video frames representing background and overlay portions thereof Seamless transmission of non-sequential video segments InventorsAssigneeApplicationNo. 801254 filed on 02/19/1997US Classes:348/578, Special effects348/699, Motion vector generation375/240.15, Bidirectional375/240.16Motion vectorExaminersPrimary: Lee, RichardAttorney, Agent or FirmInternational ClassH04N 007/32AbstractA method and apparatus for transition effects in digitally compressed motion video, such video complying with the MPEG-1 standard. Transitions between two frames of video are effectuated by selecting a FROM frame and a TO frame, generating a stream of bidirectionally dependent duplicator frames which vary in their motion vector references to the FROM frame and the TO frame according to a predefined pattern, placing the FROM frame in the past buffer of a decoder, placing the TO frame in the future frame of a decoder, feeding the stream of duplicator frames to the decoder, causing the duplicator frames to be displayed, and beginning normal playback of the video stream containing the TO frame at the TO frame position.Other References
Field of SearchSpecial effectsCombining plural sources Multiple distinct images (e.g., splitscreen) Including insertion of characters or graphics (e.g., titles) Motion vector generation With details of static storage device For storing a sequence of frames or fields Accessing circuitry Compressing in recording or decompressing in reproducing Line, field, or frame skipping Intraframe or interframe Digital compressing COMPUTER LOGIC, OPERATION, OR PROGRAMMING INSTRUCTION | |
