A 2nd-Order PWM Pre-Emphasis Technique and its Experimental FPGA Implementation

2013 ◽  
Vol 534 ◽  
pp. 227-232
Author(s):  
Yasushi Yuminaka ◽  
Shingo Ishida ◽  
Kenichi Henmi
Keyword(s):  
Transfer Function ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Pulse Amplitude ◽  
Higher Order ◽  
Fpga Implementation ◽  
Proof Of Concept ◽  
Timing Resolution

In this paper, a Pulse-Width Modulation (PWM) pre-emphasis technique is extended to a2nd-order version to equalize a higher-order transfer function of an interconnection inside/betweenVLSI chips. The PWM pre-emphasis method does not change the pulse amplitude as for conventionalFIR pre-emphasis, but instead exploits timing resolution. As a proof of concept, a 2nd-order timedomainpre-emphasis technique is designed and implemented using an FPGA to demonstrate thecapability of compensating for deterioration of signals caused by interconnections with higher-ordertransfer functions.

Prospects for the use of a modified zero method for measuring temperature with resistance sensors

2020 ◽  
pp. 51-55
Author(s):  
A.V. Filatov ◽  
K.A. Serdyukov ◽  
A.A. Novicova
Keyword(s):  
Temperature Sensor ◽  
Electrical Resistance ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Pulse Amplitude ◽  
Temperature Sensors ◽  
Measuring Devices ◽  
Modulation Control ◽  
Proposed Modification ◽  
Electric Quantity

The issues of the use of linear measuring devices for measuring temperature are considered. A method for measuring temperature by resistive temperature sensors based on a modification of the zero method is described. This modification ensures the invariance of the meter to changes in the gain of the measuring path. Zero balance in the measuring path is automatically supported by the synchronous execution of pulse-amplitude and pulse-width modulation and using a tracking circuit for adjusting the width of the latitudinal signal. When reaching zero balance, the pulse width of the latitude modulation control is connected linearly with the resistance of the temperature sensor. The errors of temperature measurements by the modified zero method are considered. The calibration of the manufactured digital thermometer with a miniature resistive temperature sensor made of platinum is described. The proposed modification of the zero measurement method can be used to create devices containing a sensor with a sensitive element – electrical resistance, changing under the influence of a non-electric quantity.

High-Speed Multiple-Valued Data Transmission Based on Time-Domain Pre-Emphasis Techniques

2010 ◽  
Vol 459 ◽  
pp. 260-270
Author(s):  
Yasushi Yuminaka ◽  
Kenichi Henmi
Keyword(s):  
Time Domain ◽  
Data Transmission ◽  
High Speed ◽  
Pulse Width Modulation ◽  
Pulse Amplitude ◽  
Cmos Technology ◽  
Timing Resolution ◽  
Channel Effects ◽  
Domain Information ◽  
Lower Voltage

This paper describes a Pulse-Width Modulation (PWM) pre-emphasis technique which utilizes time-domain information processing to increase the data rate for a given bandwidth of interconnection. The PWM pre-emphasis method does not change the pulse amplitude as for conventional FIR pre-emphasis, but instead exploits timing resolution. This fits well with recent CMOS technology trends toward higher switching speeds and lower voltage headroom. We discuss multiple-valued data transmission based on time-domain pre-emphasis techniques in consideration of higher-order channel effects.

scholarly journals A Noise-Resilient Neuromorphic Digit Classifier Based on NOR Flash Memories with Pulse-Width Modulation Scheme

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2784
Author(s):  
Gerardo Malavena ◽  
Alessandro Sottocornola Sottocornola Spinelli ◽  
Christian Monzio Monzio Compagnoni
Keyword(s):  
Flash Memory ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Pulse Amplitude ◽  
Modulation Scheme ◽  
Noise Sources ◽  
Viable Solution ◽  
Telegraph Noise ◽  
Incremental Step ◽  
Nor Flash

In this work, we investigate the implementation of a neuromorphic digit classifier based on NOR Flash memory arrays as artificial synaptic arrays and exploiting a pulse-width modulation (PWM) scheme. Its performance is compared in presence of various noise sources against what achieved when a classical pulse-amplitude modulation (PAM) scheme is employed. First, by modeling the cell threshold voltage (VT) placement affected by program noise during a program-and-verify scheme based on incremental step pulse programming (ISPP), we show that the classifier truthfulness degradation due to the limited program accuracy achieved in the PWM case is considerably lower than that obtained with the PAM approach. Then, a similar analysis is carried out to investigate the classifier behavior after program in presence of cell VT instabilities due to random telegraph noise (RTN) and to temperature variations, leading again to results in favor of the PWM approach. In light of these results, the present work suggests a viable solution to overcome some of the more serious reliability issues of NOR Flash-based artificial neural networks, paving the way to the implementation of highly-reliable, noise-resilient neuromorphic systems.

A Light Emitting Diode Driver Based on Pulse Width Modulation and Pulse Amplitude Modulation Diming

2015 ◽  
Vol 35 (9) ◽  
pp. 0922003
Author(s):  
吴玉香 Wu Yuxiang ◽  
尚俊 Shang Jun ◽  
王孝洪 Wang Xiaohong ◽  
文尚胜 Wen Shangsheng
Keyword(s):  
Amplitude Modulation ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Light Emitting Diode ◽  
Pulse Amplitude ◽  
Pulse Amplitude Modulation ◽  
Light Emitting

The 1-Bit Instrument

2020 ◽  
Vol 1 (1) ◽  
pp. 44-74
Author(s):  
Blake Troise
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Interleaving Techniques ◽  
Sonic Environment

The 1-bit sonic environment (perhaps most famously musically employed on the ZX Spectrum) is defined by extreme limitation. Yet, belying these restrictions, there is a surprisingly expressive instrumental versatility. This article explores the theory behind the primary, idiosyncratically 1-bit techniques available to the composer-programmer, those that are essential when designing “instruments” in 1-bit environments. These techniques include pulse width modulation for timbral manipulation and means of generating virtual polyphony in software, such as the pin pulse and pulse interleaving techniques. These methodologies are considered in respect to their compositional implications and instrumental applications.

An Equivalent Circuit Model for Vertical Comb Drive MEMS Optical Scanner Controlled by Pulse Width Modulation

2012 ◽  
Vol 132 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Satoshi Maruyama ◽  
Muneki Nakada ◽  
Makoto Mita ◽  
Takuya Takahashi ◽  
Hiroyuki Fujita ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Comb Drive ◽  
Optical Scanner
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