Mediatek Corporation

Industrial Technology Research Institute

Pei-Wei Hsu

Chih-Hui Kuo

Ren-Jr Chen

Chang-Lung Hsiao

Chia-Pin Chen

In a light communication system, a data embedding unit arranged between a transmitter-side communication data processing unit and a light emitting device driver embeds a communication processed data at a spatial domain of an original image according to a modulation scheme, and gets multiple RGB values for a communication data embedded image. A receiving apparatus detects a transmitter-side communication data embedded image, generates a receiver-side communication data embedded image, compensate a deformation of the receiver-side communication data embedded image, outputs a warped communication data embedded image, and extracts a communication processed data from the warped communication data embedded image.

Apparatus and method for data embedding in light communication and the light communication system and method thereof

A CABAC encoding method includes: receiving first and second coefficient flags (Sig, Last); detecting coefficient flags according to positions of the detected coefficient flags and control signal (Sig_first); generating first bin and second bin (bin_val_1, bin_val_2) corresponding to the detected coefficient flags according to the detecting result; updating a value of the second control signal (Sig_first) for the next clock cycle according to the detecting result; generating first and second position parameters (Sig/Last_pos_1, Sig/Last_pos_2) corresponding to the positions of the first and second bins (bin_val_1, bin_val_2); generating a first context index (Ctx_idx_1) according to the control signal (Sig_first) and the first position parameter (Sig/Last_pos_1) and a second context index (Ctx_idx_2) according to the control signal (Sig_first), the second position parameter (Sig/Last_pos_2) and the first bin (bin_val_1); and encoding the first and second bins (bin_val_1, bin_val_2) according to the first and second context indexes (Ctx_idx_1, Ctx_idx_2) respectively to generate the bit stream.

CABAC encoder and CABAC encoding method

A method for performing parallel processing of at least two bins in an arithmetic coded bin stream includes: utilizing a current range to calculate a range for a first bin in the bin stream; simultaneously utilizing the current range to forward predict a plurality of possible ranges and low values for a second bin in the bin stream when the first bin is an MPS; when the range for the first bin is calculated, utilizing the calculated range to select a resultant range from the plurality of possible ranges and low values for the second bin.

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Taipei, Taiwan

Pei-Wei Hsu