×

Electronic television program guide with selective updating

  • US 5,917,481 A
  • Filed: 12/15/1997
  • Issued: 06/29/1999
  • Est. Priority Date: 03/31/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A video signal receiving device comprising:

  • a tuning system capable of tuning to predetermined frequency channels and converting radio frequency signals received on said predetermined frequency channels into video signals;

    a decoder for receiving said video signals from said tuning system, said video signals comprising a program guide;

    a microprocessor for controlling said tuning system and said decoder; and

    a memory coupled to said microprocessor, said memory operative for storing a programmed subset of said predetermined frequency channels and a portion of said program guide, said portion of said program guide being related to said programmed subset of said predetermined frequency channels;

    wherein said microprocessor is programmed to repeatedly compare said portion of said program guide stored in said memory with a corresponding portion of said program guide contained in said video signals and received subsequent to storing of said portion of said program guide in said memory.

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