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:
May. 16, 2000
Filed:
Nov. 05, 1996
Richard John Aras, Santiago, CL;
Paul A Alioshin, San Francisco, CA (US);
Silicon Light Machines, Sunnyvale, CA (US);
Abstract
A method and apparatus are used for converting a stream of incoming serial video data which is received frame by frame and is formatted with all data bits arriving together for each pixel into digital PWM video formatted as a sequence of like-weighted bits. Incoming video data is temporarily stored in a digital memory. A controller organized the data in the memory into a plurality of buffers, each buffer having only bits of like weight. The data is collected as groups within the buffers. The data is then coupled to a display device as the groups of like-weighted bits after a predetermined fraction of a frame time for producing the desired PWM signal. Since each bit of the incoming video data is stored for a fraction of a frame time, the present invention facilitates decimation of the total amount of buffer memory, compared to that of the prior art. A method of and apparatus are used for converting a stream of incoming serial PWM video data which is received frame by frame and is organized with all data for a single pixel transmitted concurrently into digital PWM video organized into groups of like-weighted bits. Once the stream of incoming serial PWM video data is received it is stored in a digital memory. A controller organized the data in the memory into a plurality of bit planes, each bit plane having only bits of like weight. The data is collected as groups within the bit planes. The data is coupled to a display device as groups of like-weighted bits. As groups of the shortest duration bit weight are formed, they are coupled to the display. This allows less than an entire frame of data to be stored.