6456 results about "Digital control" patented technology

A digital display apparatus includes an array of light-emitting pixels, each with a first and second electrode, formed on a display substrate. A plurality of chiplets is located on the display substrate, each chiplet including an electrode connection pad, a signal connection pad, and a pixel circuit. The electrode connection pad is connected to one of the first or second electrodes. Each chiplet includes one or more pixel circuits formed in the chiplet and electrically connected to the corresponding electrode and signal connection pads. A digital image signal is provided to the signal connection pad(s) of at least one of the chiplets. Each pixel circuit converts at least one digital image signal value to a continuously valued analog pixel-driving signal that controls the luminance of a pixel. The display provides higher-performance pixel circuits with digital control resulting in improved image quality.

An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across which a digital signal is communicated. The system provides a means of communication across the isolation barrier that is highly immune to amplitude and phase noise interference. Clock recovery circuitry may be employed on one side of the isolation barrier to extract timing information from the digital signal communicated across the barrier, and to filter the effects of phase noise introduced at the barrier. Delta-sigma converters may be disposed on both sides of the isolation barrier to convert signals between analog and digital domains. An isolated power supply may also be provided on the isolated side of the barrier, whereby direct current is generated in response to the digital data received across the isolation barrier. A bidirectional isolation system is provided whereby bidirectional communication of digital signals is accomplished using a single pair of isolation capacitors. In preferred embodiments, the digital data communicated across the barrier consists of digital delta-sigma data signals multiplexed in time with other digital control, signaling and framing information. Finally, the isolation system may include a pulse transformer to accommodate ADSL circuitry, whereby power is transmitted through the pulse transformer.