A single-chip CMOS analog/digital mixed NTSC decoder

Abstract

One of the main properties of today's distributed and parallel systems, such as mobile ad-hoc networks and grids, is their heterogeneity in the available resources. Further, many applications of such systems are subject to Time/Utility Function (TUF) time constraints for jobs, unavoidable variability in job characteristics and arrivals, and statistical assurance requirements on timeliness behaviors. In this paper, we propose an exact analytical solution for performance evaluation of dynamic policies used for routing of TUF-constrained Firm Real-Time (FRT) jobs among parallel single-processor queues with arbitrary processing rates and capacities. The analytical method can be used for the evaluation of the compliance of some important statistical assurance requirements. Furthermore, we present a utility-aware dynamic routing policy to improve the expected accrued utility of the parallel system. The policy called Maximum Expected Utility (MEU) behaves based on the information gathered from the analytical solution. MEU is compared with some well-known Dynamic Routing (DR) policies for different TUF shapes and both cases of homogeneous and heterogeneous processors of a two-queue system. The comparisons show the efficiency of MEU for the former case and its good behavior in most situations for the latter case.

High-PSR bias circuitry for NTSC sync separation

“…[6], heavily rely on precise clock sources, particularly H-sync, Vsync, color burst, even/odd field, and back porch [4], [5]. However, these clock sources built in the TV-related products, particularly the compact hand-held or mobile TVs, will be drastically affected by the ambient temperature as well as the highly unreliable power supplies.…”

“…Most of the product data sheets, e.g., [5], were focused on the functionality of video signal processing. On the other hand, most of the related prior works were focused on either the bandgap designs [2], [3], or simple clock generations [6] video decoder [8]. Besides, the peak-to-peak amplitude of the received NTSC signals, called § , will be varied from 2V to 5V.…”