Demonstration of the Feasibility of Using Delta Modulation for Pictorial Tranmission
Abstract
An extensive investigation of delta modulation techniques for encoding pictorial data was made to determine the parameters of delta modulation systems for various image communication applica tions by system analysis computer simulation, and experimentation. The analysis and computer sim ulation included one-bit and two-bit systems with linear integration, double linear integra tion with prediction, and exponential integra tion. A feasibility model of a 25-mc two-bit exponential integration delta modulation encoding and decoding system with a serial bit rate of 100 mpps was designed, constructed, and tested. A table of the key parameters of PCM and delta modulation encoding systems, based upon the anal ysis, simulation, and implementation, is present ed. It is concluded that for a typical image communication system, two-bit delta modulation with exponential integration and sampling at two to three times the information bandwidth repre sents the best compromise of parameter. The re sultant compaction over six-bit PCM is two to three.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1963
- Accession Number
- AD0409600
Entities
People
- Albert F. Tillman
- George R. Strohmeyer
- Robert D. Vernot
- Robert V. Cotton