×

Sequential and/or random polling system with virtually instantaneous response time

  • US 4,742,335 A
  • Filed: 06/18/1986
  • Issued: 05/03/1988
  • Est. Priority Date: 06/18/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. A communication system in which a controller is coupled over a communication path with two or more transponders, at least two of which transponders have different addresses, which controller and transponders communicate by using a polling technique which incorporates time periods to allow communication between the controller and a selected transponder, and means, including the controller, for defining at least one preferred time segment which occurs at a predetermined time in a poll, during which time segment one or more transponders can simultaneously reply to the controller regardless of whether the transponders simultaneously have been specifically addressed by the controller.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×