Abstract: The present invention may include a wireless AV transmission system to support wireless transmission of AV data from an AV source device to an AV sink device. Each sink device may be associated with an AV output component, for example, a speaker. The sink devices each may have a unique address in the system. During operation, AV data having a format corresponding to a wired data protocol may be modulated onto RF channels and broadcast to the AV sink device(s). Each AV sink device may identify portion(s) of the RF channels that contain data to be output at the sink device and any timing signals to be decoded to keep the sink devices synchronized. Each AV sink device may demodulate and decode its respective AV channel from within the RF broadcasts, synchronize operation to the timing references in the broadcast signal and output its respective AV channel data.

Abstract: Display structures and methods are provided that introduce redundancy and use this redundancy with different mapping rules on different interleaved display lines to visually diffuse display artifacts. The artifacts are typically produced by errors in the transmission and recovery of analog display signals that subsequently drive digital displays. This visual diffusion substantially reduces the display artifacts and, because these visual improvements require only one element (an ADC) in the display system to be configured at a higher resolution, the visual advantageous are realized with relatively low cost.

Abstract: Analog-to-digital converters (ADCs) generally make code errors as they convert analog display signals to digital display signals of digital displays. Code-correction structures are provided that correct these code errors by initially configuring the ADCs to provide digital signals with redundant resolution. In particular, analog display signal having 2N discrete analog levels are converted with M-bit ADCs wherein M exceeds N. This redundancy is utilized with a controller that distinguishes differences between an occurrence pattern of digital codes and a desired error-free pattern of digital codes. Subsequently, the controller corrects the digital code to reduce the observed differences.

Abstract: Methods and structures are provided for generating a digital display signal in response to an analog display signal whose amplitude varies at a pixel rate and in response to a synchronization signal that defines spatial order for the analog display signal. The structures include a transform generator for providing a Fourier transform of the digital display signal and a transform analyzer which generates frequency and phase control signals in respective response to the frequency of an error spectral component and amplitudes of image spectral components in the transform. The frequency and control signals are applied to respectively adjust the sample rate of the sample clock and alter the phase of the sample clock.

Abstract: Structures and methods are provided for generating a digital display signal from an analog signal that is limited to 2N discrete analog levels and from a synchronization signal that defines spatial order for the digital display signal. These structures and methods accurately synchronize digitizers to the analog signal and they follow from a recognition that enhanced digitizer resolution will generate code patterns which easily distinguish between correct and incorrect sampling of the analog signals. Accordingly, the digitizers quantize the analog samples into an M-bit digital display signal wherein M exceeds N.