Universal television interface and sync generator therefor
First Claim
Patent Images
1. Apparatus for generating synchronization signals from an ongoing program received at a television receiver from a TV r.f. signal transmission source, comprising:
- means for generating a substantially white area on the screen of the television receiver;
means optically coupled to the screen of the television receiver and responsive to a portion of the raster in synchronism with the ongoing program; and
means coupled to said optically coupled means responsive for generating horizontal and vertical synchronization signals in synchronism with the horizontal and vertical synchronization signals of the ongoing program.
0 Assignments
0 Petitions
Accused Products
Abstract
Apparatus for generating horizontal and vertical synchronization signals in synchronism with synchronization signals generated by an ongoing television program received by a user without internal connections to the user'"'"'s television receiver, is provided by optically extracting pulses from a displayed raster of the ongoing television program and generating therefrom the synchronization signals in synchronization with the ongoing program.
16 Citations
13 Claims
-
1. Apparatus for generating synchronization signals from an ongoing program received at a television receiver from a TV r.f. signal transmission source, comprising:
-
means for generating a substantially white area on the screen of the television receiver; means optically coupled to the screen of the television receiver and responsive to a portion of the raster in synchronism with the ongoing program; and means coupled to said optically coupled means responsive for generating horizontal and vertical synchronization signals in synchronism with the horizontal and vertical synchronization signals of the ongoing program. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Apparatus for overlaying an auxiliary presentation on an ongoing program received by a television receiver from a TV r.f. signal transmission source, comprising:
-
means for generating a substantially white area on the screen of the television receiver; means optically coupled to the screen of the television receiver and responsive to a portion of the raster in synchronism with the ongoing program; means coupled to said optically coupled means responsive for generating horizontal and vertical synchronization signals in synchronism with the horizontal and vertical synchronization signals of the ongoing program; and means for generating an auxiliary presentation coupled to said means for generating horizontal and vertical synchronization signals. - View Dependent Claims (11, 12, 13)
-
Specification