Resources Contact Us Home
Television signal data transmission system

Image Number 3 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
Method for producing an adhesive fastening element made of plastic
Combination of a microorganism and a phytosphingosine derivative, composition, methods of use
Direct chemical vapor deposition of graphene on dielectric surfaces
Electronic component
Method and apparatus for controllable communication
Visual model importation
Vacuum cleaner filter adapter ring
  Randomly Featured Patents
Method of mode control in a bus optimized for personal computer data traffic
Device location transition awareness in a wireless modem
Crankcase structure for an overhead-camshaft internal combustion engine, and engine incorporating same
Removing and stacking apparatus
Step up pin for coax cable connector
Method and apparatus for graphically representing information stored in electronic media
Airbag device
Multi-purpose tool
Method of manufacturing a prosthesis to be fixed to implants in the jawbone of a patient, and a system for manufacturing such prostheses
Ring device for running on a flat tire