Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Television signal data transmission system










Image Number 5 for United States Patent #4706284.

A television signal data transmission system comprises means for transmitting a television signal in which the phase of the RF carrier is modified during a periodically recurring interval by a SAW filter having a varying phase response between the video and audio carrier frequencies of the signal. The periodically recurring interval is modulated between a first width and a second smaller width respectively representing complementary logic states of a data bit. The first width of the width modulated interval preferably extends between two points respectively located within the non-viewable, overscan portions of the video signal immediately adjacent and on either side of a horizontal blanking interval of the television signal. The transmitted signal is received by a decoder which includes a phase modulation detector for detecting the width modulated intervals and a pulse width discriminator responsive thereto for deriving the data bits.








 
 
  Recently Added Patents
Technology for managing traffic via dual homed connections in communication networks
Preventative traffic congestion social networking improvement system within a community
Circuitry for measuring and compensating phase and amplitude differences in NDT/NDI operation
(4933
Adsorptive molded parts and the use thereof
Administrable compositions
Semiconductor device having trapezoidal shaped trenches
  Randomly Featured Patents
Variable surgical access device
Method of concentrating an aqueous caustic alkali using a catholyte heat recovery evaporator
Elastic bushing employing an inertial column of damping fluid
Communication device
Core wire with shapeable tip
Apparatus for applying refractory material to refractory lined vessels
Zero setup time flip flop
Repairable shielded cable connector
Graphical user interface for a display screen or portion thereof
Field adjustable extrication collar