Abstract:
A method for decoding a Manchester-II encoded DISPLAYPORT compatible signal is provided. In this method, several counters are reset. A unit interval (UI) counter is incremented for each UI received upon receipt of a valid UI, and the value of the UI counter is compared to a plurality of threshold values after the UI counter is incremented. When the value of the UI counter exceeds each of the threshold values, for each clock cycle, a sum counter is incremented corresponding to the exceeded threshold value, and a plurality of window lengths are calculated, where each window is calculated based at least in part on the value of one of the sum counters at predetermined values of the UI counter.
Abstract:
A method and system of lossless adaptive Golomb/Rice (G/R) encoding of integer data using a novel backward-adaptive technique having novel adaptation rules. The adaptive G/R encoder and decoder (codec) and method uses adaptation rules that adjust the G/R parameter after each codeword is generated. These adaptation rules include defining an adaptation value and adjusting the G/R parameter based on the adaptation value. If the adaptation value equals zero, then the G/R parameter is decreased by an integer constant. If the adaptation value equals one, then the G/R parameter is left unchanged. If the adaptation value is greater than one, then the G/R parameter is increased by the adaptation value. In addition, the adaptive G/R encoder and method include fractional adaptation, which defines a scaled G/R parameter in terms of the G/R parameter and updates and adapts the scaled G/R parameter to slow down the rate of adaptation.
Abstract:
A method and apparatus for decoding, on a pixel-by-pixel basis, audio/video data using a table of encoded pixel parameter values, wherein each pixel is represented by an entry including a dominant pixel color component and by scaling a set of segment reference pixels comprised of segment reference pixel values according to each entry in the table of encoded pixel parameter values to produce decoded pixels comprised of decoded pixel parameter values.
Abstract:
A generalized Gray code converter includes a decimal-binary to intermediate-binary converter and an intermediate-binary to Gray code converter. The decimal-binary to intermediate-binary converter is operable to convert a sequence of sets of electrical signals encoded in decimal-binary format (decimal-binary sequence) to a sequence of sets of electrical signals encoded in intermediate-binary format (intermediate sequence). The intermediate-binary to Gray code converter, connected to the decimal-binary to intermediate-binary converter, is operable to convert the intermediate sequence to a sequence of sets of electrical signals encoded in Gray code-binary format (Gray code sequence).
Abstract:
A conversion method converting characters from a source character set to a destination character set. An index table, a key table, and an encoding table are provided. Source character code of a character is divided into a first part and a second part. A head offset and a tail offset are acquired in the index table according to the first part. The second part is searched in the key table based on the head offset and the tail offset. Destination character code of the character is retrieved from the encoding table matching to the searching result.
Abstract:
Binary signals that are transmitted by Manchester coding and frequency modulation are demodulated based on the behavior of the phase or complex vector value of the received signal. The polarities of the information bits may be determined by measuring the phase excursions in the middles of the Manchester symbols. A phase reference is established from a plurality of candidate phase references as a basis for comparison of the mid-symbol phase. The phase can be measured at the start-points and end-points of the symbols and averaged, or measured a plurality of times during each symbol period to generate a reference phase.
Abstract:
Binary coded decimal operands may be operated on by use of a binary arithmetic logic unit and the result corrected to provide a binary coded decimal result by use of correction logic which is responsive to the result produced by the binary arithmetic logic unit, the type of operation being performed and whether the binary arithmetic logic unit produced a carry as a result of its arithmetic operation on such operands.
Abstract:
Circuitry for evaluating a serial binary number after each of several modifications with respect to given constants and further modifying the result in connection with the sign of the result obtained by the previous modification to provide serial binary to BCD conversion. Further circuitry is illustrated for converting from a BCD word to a serial binary word by adding together one or more serial binary words each representative of the value of the logic ones appearing in the BCD word.
Abstract:
Decoder logic is limited to decoding of BCD digital signals to a seven segment code for numeric characters. Intermediate stages of decoding are utilized and complex MOS implemented gates reduce the logical circuitry for digital display of numeric characters by energizing segments of a seven segment display device.
Abstract:
A system and method for converting binary coded decimal numbers to binary and for converting binary to binary coded decimal. Read only memories include a programmed mapping between the binary and binary coded decimal codes. Input to the read only memory in one code is converted to an output in the other code. The outputs from the read only memories are summed to produce the desired result.