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
Light-emitting device package and method of manufacturing the same
Multi-layer, microporous polyolefin membrane, its production method, battery separator and battery
Method for designing sunlight-reflection and heat-radiation multilayer film
Differentiated PSIP table update interval technology
Method of forming a power supply controller and structure therefor
Antimony and germanium complexes useful for CVD/ALD of metal thin films
Method and apparatus for optimizing paging in a communication network
  Randomly Featured Patents
Transistor including insertion layer and channel layer with different work functions and method of manufacturing the same
Process for producing light olefins
Catalyst obtained by prepolymerization of polyolefin and olefin polymerization method using the same
Method and system for automatically distributing fees, including a reseller commission, during a digital file transaction
Knock-down, returnable, high load capacity plastic cable reel
Means for indexing a rotary arm in small angular steps
Hybrid probe for testing semiconductor devices
Method of electrostatic transferring very small dry toner particles using an intermediate
Service cart with recessed drawer handles
Viterbi decoder and speech recognition method using same using non-linear filter for observation probabilities