Zenith Electronics Corporation received U.S. Patent 5574509 for an antenna adjustment system that displays real-time signal quality on-screen, allowing viewers to optimally position their antenna. The system compares a received digital TV frame sync symbol code against a reference code to generate a visual error signal on the display.
| MicroPatent via Individual Inc. : Abstract: An antenna adjustment system for a digital television receiver includes a graphics generator for receiving an error signal input and developing an on-screen signal quality display. An antenna is positionable by the viewer while referring to the on-screen signal quality display which enables optimal orientation of the antenna for best signal quality. The error signal is developed by comparing a rugged frame sync in the received television signal with a reference frame sync in the television receiver.
Ex Claim Text: In combination: a television receiver for processing digital signals; a positionable antenna coupled to said television receiver for receiving a digital television signal including a robust frame sync symbol code, said television receiver including a reference frame sync symbol code; means for comparing the frame sync symbol code in said digital signal with said reference frame sync symbol code for developing an error signal; and means including a graphics generator for producing a visual indication on a display screen of said television receiver based on said error signal for enabling optimal orientation of said positionable antenna. Assignee: Zenith Electronics Corporation Patent Number: 5574509 Issue Date: -&dD1996 11 12-&d@ Inventor(s): Citta, Richard W.Sgrignoli, Gary J. If you would like to purchase a copy of this patent, please call MicroPatent at 800-984-9800. |
