Abstract:
In the present invention an apparatus and method for providing compensation against temperature, process and supply voltage variation in MOS circuits has been proposed. The invention provides a change in process, temperature and voltage detection circuit, which controls the body bias and the drive of the devices in the CMOS circuit. The detection circuit is independent of any input or internal signal of the CMOS circuit to be controlled.
Abstract:
An improved turbo encoder comprising multiple interleaved parallel concatenated recursive systematic convolutional encoder wherein each recursive systematic convolutional encoder is provided with an LUT that simultaneously provides the output bit pattern as well as the next state value corresponding to a defined set of multiple input bits and present state for operating said recursive systematic convolutional encoder. Thus the approach works with improved LUTs, which do the job of both puncturing and multiplexing for four input bits at a time. Theoretically the proposed approach works almost four times faster than the conventional approach, which can handle only one input bit at a time.
Abstract:
An improved FFT / IFFT processor comprising computation means capable of processing butterfly operations, and storage means for storing the operands of butterfly operations, and a mechanism for storing the operands of multiple consecutive butterfly operations in contiguous storage locations, and wherein the computation means is capable of simultaneously accessing and processing said multiple butterfly operations.
Abstract:
A macro-block level parallel implementation of a video decoder in parallel processing environment comprising a Variable Length Decoding (VLD) block to decode the encoded Discrete Cosine Transform (DCT) coefficient; a master node which receives said decoded Discrete Cosine Transform (DCT) coefficients; and, plurality of slave nodes/processors for parallel implementation of Inverse Discrete Cosine Transform (IDCT) and motion compensation at macro-block level.
Abstract:
An improved multi-wordline memory architecture providing decreased bitline coupling for increased speed and reduced power consumption comprising an interleaving arrangement for connecting adjacent bitcells to different wordlines, coupled to a multiplexing arrangement for sharing bitlines of adjacent bitcells.
Abstract:
This invention relates to an electronic protection device. According to the invention, this protection device disables the output from a digital circuit whenever an input signal is below a threshold voltage level and comprises :
a threshold voltage detector, and a gating means for enabling/disabling the output from the digital circuit, having its control input connected to the output of the threshold voltage detector.
Abstract:
A method and system for reducing power consumption in digital circuits using charge redistribution, comprising a plurality of signal lines, an intermediate floating virtual source / sink, and a charge redistribution circuit connected to each said signal line that isolates said line from its source and connects it to the intermediate floating virtual source / sink during an idle period prior to a change of state. This charge redistribution provides steady state statistical independent advantage due to charge recycling without inserting extra complimentary line.
Abstract:
An improved fractional divider that provides high resolution without the need for any analog components. It comprises an integer value storage means containing the integer part of the division value 'K' connected to the input of a programmable counter means that is configured for a count value of 'K' or 'K+1' depending upon the state of a count control signal and generates the output signal as well a terminal count signal which is connected to an enable input of a fractional accumulator means that produces said count control signal on an addition overflow and has a first input connected to its result output and a second input connected to the output of a fractional value storage means, containing the fractional part of the divider value.
Abstract:
This invention relates to an improved binary-weighted, switched-capacitor, charge-redistribution successive approximation Analog-to-Digital Converter (ADC) characterized in that it includes an adjusting mechanism for adding a charge corresponding to one-half of the Least Significant Bit (LSB) of said ADC to the charge stored in the switched capacitor array after the sampling phase of said ADC so as to provide a quantization error that is evenly distributed between +0.5 LSB and -0.5 LSB, without the need for any additional processing clock cycles.
Abstract:
L'invention concerne un circuit de génération d'une tension de référence (V OUT ), comprenant une première source de courant (M4) en série avec un premier transistor bipolaire (Q8) ; une deuxième source de courant (M5) en série avec une première résistance (R8) ; une troisième source de courant (M6) en série avec un deuxième transistor bipolaire (Q9), la troisième source de courant étant en miroir de courant avec la première source de courant ; une deuxième résistance (R9) entre la base du deuxième transistor bipolaire (Q9) et le point de connexion entre la deuxième source de courant et la première résistance ; et une quatrième source de courant (M7) en série avec une troisième résistance (R10), le point de connexion entre la quatrième source de courant (M7) et la troisième résistance (R10) définissant une borne de tension de référence (V OUT ).