| Paper: | SPTM-P7.3 | ||
| Session: | Signal Enhancement and Reconstruction | ||
| Time: | Thursday, May 20, 09:30 - 11:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Signal Restoration, Reconstruction, and Enhancement | ||
| Title: | DIGITAL PRE-COMPENSATION FOR FAULTY D/A CONVERTERS: THE "MISSING PIXEL" PROBLEM | ||
| Authors: | Sourav Dey; Massachusetts Institute of Technology | ||
| Andrew Russell; Massachusetts Institute of Technology | |||
| Alan Oppenheim; Massachusetts Institute of Technology | |||
| Abstract: | In some contexts, DACs fail in such a way that specific samples are dropped. For example in flat-panel video displays, one of the pixel LEDs can malfunction and get permanently set to a particular value. We refer to this as the ``missing pixel'' problem. Under certain conditions, it may be possible to compensate for the dropped sample by pre-processing the digital signal. This paper describes a number of such compensation strategies. Each strategy is analyzed and results from numerical simulations are presented. Of particular interest is the relationship between compensation and the class of discrete prolate spheroidal sequences. | ||
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