scholarly journals Coder and Decoder of Block 7B8B Simplified with Auxiliary Channel

2020 ◽  
Author(s):  
António D. Reis ◽  
José F. Rocha ◽  
Atílio S. Gameiro ◽  
Jose P. Carvalho
Keyword(s):  
Transmission Lines ◽  
Block Codes ◽  
Main Channel ◽  
Constant Component ◽  
Digital Systems ◽  
System Quality

This work presents the coder and decoder of block 7B8B simplified with auxiliary channel. The coder 7B8B converts an input 7 bits word in an output 8 bits word. It transmits approximately an equal number of 1’s and 0’s to provide a DC constant component. It increases the transitions number, improves the system quality and security. The objective is also to improve the system potentialities with an auxiliary channel to monitor the communication (alarm.) The main channel is real, but the auxiliary channel is fictitious. Keywords: Block Codes, Advanced digital systems, Transmission lines

scholarly journals Coder and Decoder of Block 3B4B with Auxiliary Channel

2020 ◽  
Author(s):  
António D. Reis ◽  
José F. Rocha ◽  
Atílio S. Gameiro ◽  
Jose P. Carvalho
Keyword(s):  
Transmission Lines ◽  
Block Codes ◽  
Main Channel ◽  
Constant Component ◽  
Digital Systems ◽  
System Quality

This work presents the coder and decoder of block 3B4B with auxiliary channel. The coder 3B4B converts an input 3 bits word in an output 4 bits word. It transmits an equal number of 1’s and 0’s to provide a DC constant component. It increases the transitions number, improves the system quality and security. The objective is also to improve the system potentialities with an auxiliary channel to monitor the communication (alarm). The main channel is real, but the auxiliary channel is fictitious. Keywords: Block codes, Digital systems, Transmission lines

scholarly journals Coder and Decoder of Block mBnB Principally the 1B2B or Manchester

2020 ◽  
Author(s):  
António D. Reis ◽  
José F. Rocha ◽  
Atílio S. Gameiro
Keyword(s):  
Information Security ◽  
Transmission Line ◽  
Transmission Lines ◽  
Block Codes ◽  
Constant Component ◽  
Digital Systems ◽  
Transmission Quality

This work presents the coder and decoder of block mBnB of the type 1B2B or Manchester. In the coder 1B2B each block/word of 1 input bit is coded in the block / word of 2 output bits. In the decoder 1B2B happen the inverse, each block of 2 input bits is newly converted in the original block of 1 output bit. The coder injects in the transmission line a number of 1’s exactly equal to the number of 0’s, what guarantees a DC constant component and maximizes the transitions number.  The objective is  to implement the pair coder and decoder 1B2B so that it improves the transmission quality and increases the information security. Keywords: Block codes, Digital systems, Transmission lines

Creating a standard method of controlling digital microscopes: the microscope access protocol (map)

1995 ◽  
Vol 53 ◽  
pp. 16-17
Author(s):  
T. A. Dodson ◽  
E. Völkl ◽  
L. F. Allard ◽  
T. A. Nolan
Keyword(s):  
Data Storage ◽  
Storage Systems ◽  
Digital Systems ◽  
Data Networks ◽  
Digital Microscopy ◽  
Command Language ◽  
Access Protocol ◽  
Analog To Digital ◽  
Basic Physics ◽  
Scanning Electron

The process of moving to a fully digital microscopy laboratory requires changes in instrumentation, computing hardware, computing software, data storage systems, and data networks, as well as in the operating procedures of each facility. Moving from analog to digital systems in the microscopy laboratory is similar to the instrumentation projects being undertaken in many scientific labs. A central problem of any of these projects is to create the best combination of hardware and software to effectively control the parameters of data collection and then to actually acquire data from the instrument. This problem is particularly acute for the microscopist who wishes to "digitize" the operation of a transmission or scanning electron microscope. Although the basic physics of each type of instrument and the type of data (images & spectra) generated by each are very similar, each manufacturer approaches automation differently. The communications interfaces vary as well as the command language used to control the instrument.

Testing of Digital Systems

2003 ◽  
Author(s):  
N. K. Jha ◽  
S. Gupta
Keyword(s):  
Digital Systems
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