Communications, satellite, network, DAMA, interactive, digital data, special purpose instructional aids. The project thrust is to investigate techniques and technology to modify regional satellite-based instructional audio/video delivery systems to accommodate audio and data responses from handicapped individuals. Presently, the regional model incorporates audio talkback via terrestrial telephone lines for interaction. While this system is adequate for non-handicapped students, a more flexible response system will be required for handicapped students. It will be necessary to provide features such as continuous dedicated audio return paths (i.e.. Not dial up telephone lines) and digital return data links (teletype in lieu of audio response) to accommodate certain handicapping conditions some students may require the use of written messages to digital signal translation prior to transmission. These techniques require the development of low cost satellite earth station transmit terminals capable of both analog and digital transmission, a master receiving terminal (for use at the programming originating point) and a low cost demand assignment multiple access (DAMA) protocol which will allow a single satellite voice and data circuit to be shared by many different handicapped students. A number of special purpose voice and data input devices must be developed to enable the largest number of handicapped students to benefit from the system. Res.: Phase I will design a response system compatible with the special needs of handicapped persons desiring interactive instruction. Extensive research into alternative interfacing due to varying degrees of impairment, will be incorporated in phase I design criteria. Phase ii is the development of prototype hardwares and softwares, each being thoroughly field tested, to ensure phase I design constraints are met.
Keywords:1. Communication and control systems2. Devices/systems for physically impaired
