James D. Logan

System for electrically distributing personalized information

Audio message exchange system

Time delayed digital video system using concurrent recording and playback

Audio program player including a dynamic program selection controller

Systems and methods for computer enhanced broadcast monitoring

Methods and apparatus for selectively reproducing segments of broadcast programming

Interactive system for authoring hypertext document collections

Techniques for changing the behavior of a link in a hypertext document

Apparatus and methods for broadcast monitoring

Systems and methods for modifying broadcast programming