The Use of Videodisc Technology in the Storage and Retrieval of Visual Information: The Hong Kong Polytechnic Library Experience
Barry Burton · Purdue e-Pubs (Purdue University System) · 2012
LEARNINGVideodisc is characterized by analog signaling, large video capacity, and access to individual frames independently of any of the other (for CAV or Constant Angular Velocity format only).The analog signals of the videodis e are created by frequency modulation, which is used both to write and retrie Ve video images from laser-burned pits.The technology enables as 12-inch CAV ' d format videodisc to store 54,000 frames or 36 minutes of video images per s~e 98 In Ot vi