Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Wireless device with extendable antenna
Actuators and moveable elements with position sensing
Process cartridge and electrophotographic image forming apparatus
Semiconductor device
System and method for optimizing utilization of inventory space for dispensable articles
Testing apparatus and testing method for telephone apparatus
Audio signal clip detection
  Randomly Featured Patents
Tub-shower header-bar accessory-rack w/universal-bracket
Environmental controller for a sealed structure
Inhibiting popcorn polymer formation with sulfur-containing compounds
Priority mechanism for scheduling isochronous and asynchronous transactions on a shared bus
Technique for implementing a distributed lock in a processor-based device
Wheelchair access pathway for sand, beaches, lawns, grass and fields
Compatible compositions of poly(phenylene ether) resins and semi-crystalline resins
Bandage assembly
Retroreflective adherent particles and their use
Process and apparatus for recycling of PET-material