A/D and D/A Conversion,analog to digital and digital to analog


Data Converter impacts the factor for the performance of the overall radio design
Requirements: very high sampling rates, high number of effective quantization bits, an operating bandwidth of several Ghz, a large spurious-free dynamic range, a reasonable price
DAC and ADC converters
Sampling and Quantization
Nyquist Zones
Aliasing
Bandpass filtering – uses image to translate bandpass signals to baseband
Errors occurs in Quantization
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Digital-to-Analog Analog-to-Digital
Data Handling Systems
Both data about the physical world and control signals sent to interact with the physical world are typically analog or continuously varying quantities.
In order to use the power of digital electronics, one must convert from analog to digital form on the experimental measurement end and convert from digital to analog form on the control or output end of a laboratory system.
Digital-to-Analog Conversion
When data is in binary form, the 0's and 1's may be of s ....etc

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detailed working of a DIGITAL NOCTURNAL NUISANCE using logic gates ....etc

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APPLICATIONS OF DIGITAL OBJECT COUNTER USING LDR & IC 555 MONOSTABLE MULTIVIBRATOR ....etc

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1. A synopsis of recent work in edge detection using the DWT
2. Automated estimation of the upper surface of the diaphragm in 3-D CT images
3. Adaptive bilateral filter for sharpness enhancement and noise removal
4. Phase shifting for Non-separable 2D Hear wavelets
5. Universal Impulse noise filter based on Genetic programming
6. Efficient Non-local mean for De-noising of Textural patterns
7. Dynamic De-noising of tracking sequences
8. Analysis and compensation of rolling shutter effect
9. Coherent multi-scale image processing using dua ....etc

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a) Implementation of image restoration.
b) Implementation of color optimization.
c) Image blur reduction using adaptive tonal correction
d) Image enhancement using histogram techniques
e) Implementation of visual cryptography using DH method.
f) Image segmentation and texture extraction for Number Recognition system.
g) Implementation of reverse watermarking system
h) Image denoising using DWT
i) Image denoising using ROF method.
j) Implementation of IMAGE steganography using LSB
k) JPEG compression using DCT.
l) Multi resolution w ....etc

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hi....we want the project abstract of lcd based digital alarm clock with digital thermometer using 8051/89c51........ ....etc

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a) Frequency Meter

b) LPG/CNG gas leak detector and controller.

c) Electronic eye security system

d) Solar tracking and trapping system

e) Automatic plant irrigator

f) Anti-Theft alarm for two wheelers

g) Ultrasonic Wind speed meter

h) Quality control in industrial production unit.

i) Emergency alert and notification in Bank

j) Vehicle activity analysis

k) Boiler Automatic Feed Water and Steam Level Control

l) Automatic Garden Water Irrigation Control

m) Prepaid card for petrol bunk

n) Microcontroller base ....etc

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Abstract— Computational Private Information Retrieval (cPIR) protocols allow a client to retrieve one bit from a database, without the server inferring any information about the queried bit. These protocols are too costly in practice because they invoke complex arithmetic operations for every bit of the database. In this paper, we present pCloud, a distributed system that constitutes the first attempt toward practical cPIR. Our approach assumes a disk-based architecture that retrieves one page with a single query. Using a striping technique, ....etc

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Abstract:

Digital audio broadcasting, DAB, is the most fundamental advancement in radio technology since that introduction of FM stereo radio. It gives listeners interference - free reception of CD quality sound, easy to use radios, and the potential for wider listening choice through many additional stations and services.

DAB is a reliable multi service digital broadcasting system for reception by mobile, portable and fixed receivers with a simple, non-directional antenna. It can be operated at any frequency from 30 MHz ....etc

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