Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Multiplexed audio-video signal transmission system through pair-wire










Image Number 14 for United States Patent #5778303.

A multiplexed audio-video signal transmission system has a camera-equipped intercom which produces a balanced audio-video signal. A twisted pair-wire connected to the intercom transmits a multiplexed signal of audio signal, video signal modulated to a frequency band not overlapping the audio signal frequency, and DC power. The audio signal and video signal are carried in the pair-wire in opposite phase in a balanced condition, and the DC power is carried between the pair-wire. A relay device is inserted in the pair-wire to refine the video signal. Main line branching device and door branching device are provided to branch out the multiplexed signal to a television equipped control unit 17.








 
 
  Recently Added Patents
Insulin derivative
Near-field optical disk having surface plasmon amplification by stimulated emission of radiation
Apparatus and method for exerting force on a subject tissue
Crystal structure of human JAK3 kinase domain complex and binding pockets thereof
Method of patterning color conversion layer and method of manufacturing organic EL display using the patterning method
Immunotherapy in cancer treatment
Cryptographically generated addresses using backward key chain for secure route optimization in mobile internet protocol
  Randomly Featured Patents
Devices, methods and softwares for telecommunication service provider to receive fax on behalf of subscriber on voice telephone line
Aromatic carboxylic acid bicyclic sulfur compounds
Photoluminescent materials for outputting yellow-green light
Two wire flow condition sensing system
Non-impact printer apparatus with improved current mirror driver
Portable earth boring machine
Vehicle article carrier unit
Cooling cosmetic or dermatological preparations comprising (1R,2S,5R)-2-isopropyl-5-methyl-N-(2-(pyridin-2-yl)ethyl)-cyclohexane carboxamide and/or (1R,2S,5R)-N-(4-cyanomethyl-phenyl)-2-is
Down hole electrically operated safety valve
Method for plutonium-gallium separation by anodic dissolution of a solid plutonium-gallium alloy