INTRODUCTION High-accuracy rotary encoders are required for rotational axis position measurement in ultraprecision manufacturing and measurement equipments. A typical rotary encoder is made of a glass disk with a fine grating pattern and a scanning read head unit. Digital pulse trains are output from the read head to represent the disk rotary position. The angular measurement accuracy of such a...

Algorithmically optimized AVC (MPEG-4 part 10 / H.264) video encoder with parallel processing of data is presented in the paper. The paper reveals the architecture of the proposed encoder together with the description of the applied software optimization techniques. Conducted experiments show exactly the degree of parallelization of computations in the encoder and the compression performance of...

The optimal coding problem in two-user white Gaussianchannels with feedback is discussed. The messages are taken as Gauss-Markov processes. The optimal decoder pair and the optimal linear encoderpair are developed. A nonlinear class (additive feedback type) of encoderpairs in which the optimal linear encoder pair is optimal is presented.

A complexity management approach is proposed for an H.264 encoder running in a processor/power constrained environment. The objective is to maintain smooth video frame rate whilst ensuring that the frame quality is not degraded unacceptably. Subjective results show that the managed complexity encoder outperforms the normal encoder (where frames are dropped when processing power is limited) cons...

We describe an attentive encoder that combines tree-structured recursive neural networks and sequential recurrent neural networks for modelling sentence pairs. Since existing attentive models exert attention on the sequential structure, we propose a way to incorporate attention into the tree topology. Specially, given a pair of sentences, our attentive encoder uses the representation of one sen...

We propose a low cost polymeric optical waveguides-based optical CDMA encoder and decoder modules. The structures of the optical CDMA encoder and decoder modules are presented. The performance of the optical CDMA encoder and decoder modules is simulated using 10-chip binary phase-shift keying (BPSK) coding schemes. The optical CDMA encoder and decoder modules can effectively transmit and recove...

This paper addresses a low-cost and real-time solution for the implementation of super-resolution (SR) algorithms over SOC (System-On-Chip) platforms in order to achieve high-quality image improvements. Lowcost constraints are accomplished in the sense that SR is performed without developing a specific hardware, but re-using a video encoder IP block. This encoder can be used either in compressi...

This paper presents a high performance design for ContextBased Adaptive Variable Length Coding (CAVLC) used in the H.264/ AVC standard. A two-stage encoder is proposed to make the scan and encode stage work simultaneously. The scan engine scans four coefficients at each cycle. Parallel encoder for four “levels” and parallel encoder for four “Run before” are adopted to accelerate the encode engi...

In current Deep Submicron (DSM) era, interconnects play important role in overall performance of the chip. The factors such as power dissipation and crosstalk through RC modeled interconnects substantially affect the entire working of the chip. Therefore, to enhance the performance, minimization or elimination of coupling between interconnects is essential. Bus-invert method is the best method ...

In order to achieve adaptive channel coding and adaptive modulation, the main causes of degradation to system performance are the decoder selection error and modulator estimation error. The utilization of supplementary information, in an estimation system utilizing channel estimation results, blind modulation estimation, and blind encoder estimation using several decoders information and encode...