Abstract:
A video encoding and decoding system that implements an adaptive transfer function method internally within the codec for signal representation. A focus dynamic range representing an effective dynamic range of the human visual system may be dynamically determined for each scene, sequence, frame, or region of input video. The video data may be cropped and quantized into the bit depth of the codec according to a transfer function for encoding within the codec. The transfer function may be the same as the transfer function of the input video data or may be a transfer function internal to the codec. The encoded video data may be decoded and expanded into the dynamic range of display(s). The adaptive transfer function method enables the codec to use fewer bits for the internal representation of the signal while still representing the entire dynamic range of the signal in output.
Abstract:
Video processing techniques and pipelines that support capture, distribution, and display of high dynamic range (HDR) image data to both HDR-enabled display devices and display devices that do not support HDR imaging. A sensor pipeline (210) may generate standard dynamic range (SDR) data (230A) from HDR data captured by a sensor using tone mapping (226), for example local tone mapping. Information used to generate the SDR data may be provided to a display pipeline (260) as metadata (230B) with the generated SDR data (230B). If a target display does not support HDR imaging, the SDR data may be directly rendered by the display pipeline. If the target display does support HDR imaging, then an inverse mapping technique (276) may be applied to the SDR data according to the metadata to render HDR data for display. Information used in performing color gamut mapping may also be provided in the metadata and used to recover clipped colors for display.
Abstract:
An electro-optical device includes a control circuit in which, when a selection signal (S1) is output, a corresponding first signal line is selected. When a selection signal (S2) is output during an output period of the selection signal (S1), a corresponding second signal line is selected. The control circuit outputs a selection signal so that an overlapping period occurs at a partial selection period of the first and second signal lines. Similarly, the control circuit outputs a selection signal so that an overlapping period occurs at a partial selection period of the second signal line corresponding to the selection signal (S2) and the third signal line corresponding to the selection signal (S3), or at a partial selection period of the third signal line corresponding to the selection signal (S3) and the fourth signal line corresponding to the selection signal (S4).