Beschreibung
Data communication and networks are fast becoming the largest industry in the world. It is one area of work with which every virtual person has some involvement, whether it be using the telephone or connecting to the Internet. An IT specialist must know existing technologies, but must also know where the industry will go. This book is intended to cover the existing tech nologies and also the emerging technologies. I believe that the growth areas in the coming years will be in: - Windows NT networking and associated networking programs. - TCPIIP communications. - NetWare 4. - Data encryption. - Data compression. - Digitization of video, audio and images. - Fast Ethernet. - ATM. - FDDI. - HTML/Java/JavaScript. - Virtually anything to do with the Internet and especially Intranets. This book discusses each of these technologies in great detail and covers areas which are currently relevant, such as Ethernet, UNIX, RS-232 and electronic mail. The book splits into seven main sections and some appendices, such as: - General data compression (Chapters 2 and 3). - Video, images and sound (Chapters 4-10). - Error coding and encryption (Chapters 11-15). - TCPIIP and the Internet (Chapters 16-23). - Network operating systems (Chapters 24-26). - LANslW ANs (Chapters 27-33). - Cables and connectors (Appendix B).
Autorenporträt
Inhaltsangabe1.1 Introduction.- 1.2 A Little bit of history.- 1.3 Information.- 1.4 Digital versus analogue.- 1.5 Conversion to digital.- 1.6 Sampling theory.- 1.7 Quantization.- 1.8 Exercises.- Compression Techniques.- 2.1 Introduction.- 2.2 Compression methods.- 2.3 Letter probabilities.- 2.4 Coding methods.- 2.5 Statistical encoding.- 2.6 Repetitive sequence suppression.- 2.7 Differential encoding.- 2.8 Transform encoding.- 2.9 Exercises.- 2.10 Letter probability program.- Huffman/Lempel-Ziv Compression Methods.- 3.1 Introduction.- 3.2 Huffman coding.- 3.3 Adaptive Huffman coding.- 3.4 Lempel-Ziv coding.- 3.5 Lempel-Ziv Welsh coding.- 3.6 Variable-length-code LZW compression.- 3.7 Disadvantages with LZ compression.- 3.8 Practical Lempal-Ziv/Huffman coding.- 3.9 Exercices.- Image Compression (GIF/TIFF/PCX).- 4.1 Introdution.- 4.2 Comparison of the different methods.- 4.3 GIF coding.- 4.4 TIFF coding.- 4.5 GIF interlaced images.- 4.6 PCX coding.- 4.7 Exercises.- Image Compression (JPEG).- 5.1 Introduction.- 5.2 JPEG coding.- 5.3 JPEG decoding.- 5.4 JPEG file format.- 5.5 JPEG modes.- 5.6 Exercises.- Video Signals.- 6.1 Introduction.- 6.2 Color-difference signals.- 6.3 Quadrature modulation.- 6.4 Baseband video signals.- 6.5 Digitizing TV signals.- 6.6 100 Hz pictures.- 6.7 Compressed TV.- 6.8 HDTV quality.- 6.9 Exercise.- Motion Video Compression.- 7.1 Motion video.- 7.2 MPEG-1 overview.- 7.3 MPEG-1 video signals.- 7.4 MPEG-1 compression process.- 7.5 MPEG-1 decoder.- 7.6 MPEG-1 audio compression.- 7.7 MPEG-2.- 7.8 MPEG-2 system layer.- 7.9 Other MPEG-2 enchancements.- 7.10 MPEG-2 bit rate.- 7.11 Exercises.- Speech and Audio Signals.- 8.1 Introduction.- 8.2 PCM parameters.- 8.3 Differential encoding.- 8.4 Speech compression.- 8.5 A-Law and ?-Law companding.- 8.6 Speech sampling.- 8.7 PCM-TDM systems.- 8.8 Exercises.- Audio Signals.- 9.1 Introduction.- 9.2 Principles.- 9.3 Digital audio standards.- 9.4 Error control.- 9.5 Interleaving.- 9.6 CD audio system.- 9.7 Digital audio compression.- 9.8 The 44.1 kHz sampling rate.- 9.9 Exercise.- Audio Compression (MPEG-Audio and Dolby AC-3).- 10.1 Introduction.- 10.2 Psycho-acoustic model.- 10.3 MPEG audio coding.- 10.4 Backward/forward adaptive bit allocation methods.- 10.5 Comparison between forward and backward adaptive methods.- 10.6 Dolby AC-1 and AC-2.- 10.7 Dolby AC-3 coding.- AC-3 parameters.- 10.9 Exercises.- Erro Coding Principles.- 11.1 Introduction.- 11.2 Modulo-2 arithetic.- 11.3 Binary manipulation.- 11.4 Hamming distance.- 11.5 General probability theory.- 11.6 Error probability.- 11.7 Combinations of Errors.- 11.8 Linear and cyclic codes.- 11.9 Block and convolutional coding.- 11.10 Systematic and unsystematic coding.- 11.11 Feedforward and feedback error correction.- 11.12 Error types.- 11.13 Coding gain.- 11.14 Exercises.- Error Coding (Detection).- 12.1 Introduction.- 12.2 Parity.- 12.3 Block parity.- 12.4 Checksum.- 12.5 Cyclic redundancy checking (CRC).- 12.6 Exercises.- Error Coding (Correction).- 13.1 Introduction.- 13.2 Longitudinal/vertical redundancy checks (LRC/VR).- 13.3 Hamming code.- 13.4 Representations of Hamming code.- 13.5 Single error correction/double error detection Hamming code.- 13.6 Reed-Solomon coding.- 13.7 Convolution codes.- 13.8 Tutorial.- Data Encryption Principles.- 14.1 Introduction.- 14.2 Government pressure.- 14.3 Cryptography.- 14.4 Legal issues.- 14.5 Basic encryption principles.- 14.6 Exercises.- Data Encryption.- 15.1 Introduction.- 15.2 Private-key encryption.- 15.3 Public-key encryption.- 15.4 Exercises.- TCP/IP.- 16.1 Introduction.- 16.2 TCP/IP gateways and hosts.- 16.3 Function of the IP protocol.- 16.4 Internet datagram.- 16.5 ICMP.- 16.6 TCP/IP internets.- 16.7 Domain name system.- 16.8 Internet naming structure.- 16.9 Domain name server.- 16.10 Bootp protocol.- 16.11 Example network.- 16.12 Exercises.- TCP/IP II.- 17.1 Introduction.- 17.2 IP Ver6.- 17.3 Transmission control protocol.- 17.4 TCP/IP commands.- 17.5 Exercises.- Electronic Mai
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Springer Verlag GmbH
Tiergartenstr. 17
69121 Heidelberg
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E-Mail: juergen.hartmann@springer.com
