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
Buckle (tube)
Depth estimation apparatus and method
Semiconductor device and manufacturing method thereof
Precision geolocation of moving or fixed transmitters using multiple observers
Estimating stack distances
Process for preparation of Efavirenz
Candle holder
  Randomly Featured Patents
Systems, methods, and apparatus for signal separation using data driven techniques
Aircraft armament apparatus
Iron compound particles and magnetic recording medium using same
Opto-electronic transducer arrangement having a lens-type optical coupling
DC-DC converter for overvoltage protection
Water well rehabilitation apparatus
Cleaning and refurbishing chamber components having metal coatings
DOCUMENT PROCESSOR, DOCUMENT CLASSIFICATION DEVICE, DOCUMENT PROCESSING METHOD, DOCUMENT CLASSIFICATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM FOR RECORDING PROGRAMS FOR EXECUTING THE
Toaster
Thermotropic adhesive tape