U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 340/825.61 - Having delay line


Subclass of Class 340 - Communications: electrical
Definition: Subject matter including an element which retards the progress
No. of patents: 12
Last issue date: 04/01/2008


NumberTitleIssue Date
7352826Analog delay circuit
An analog delay circuit to impart a group delay to an analog input signal is described. The analog delay circuit may comprise a capacitor to impart at least a portion of the group delay to the analog output signal and a buffer circuit coupled between the capacitor a...
04/01/2008
6965299High-speed, low-power crossbar switch
In a crosspoint switch, both input buses and output buses are driven at low swing. Self-timed, differential, push-pull, low swing driver circuits drive the input buses and are provided in the crosspoints to drive the output buses. Clocked, regenerative sense amplifi...
11/15/2005
5745533Apparatus and method for adjusting the skew of a timing signal using propagation delay time of signals generated by a ring oscillator forming a digital circuit
When a selector selects a first input terminal, a first loop circuit is formed including first and second input buffer circuits and an output buffer circuit. When the selector selects a second input terminal, a second loop circuit is formed including the ...
04/28/1998
5202678Recognition unit
An electronic recognition unit indicates that a flow of received information is starting when a desired bi-phased pulsed ratio signal starts to be received. The recognition unit discriminates against both noise and spurious radio signals. Desired signals ...
04/13/1993
5170161Wireless transmitting-receiving apparatus for a bicycle
A wireless transmitting-receiving apparatus for detecting and displaying the speed of travel of a bicycle which is mounted on a wheel, including a sensor generating one signal per every rotation of the wheel, a signal receiving apparatus for successively ...
12/08/1992
4982186Pulse train relay
A pulse train relay for relaying pulses of duration not exceeding a maximum value (141), the relay being characterized by the fact that it comprises a receiver (1) having an input (2) suitable for picking up the pulses of a train, and an output (3) suitab...
01/01/1991
4768207Systems for receiving messages transmitted by pulse position modulation (PPM)
The present invention relates to remote control or trajectory calculation systems for missiles for example, and in particular to a message receiving device which may be mounted on the missle itself. The receiver of the invention comprises means for receiving t...
08/30/1988
4763254Information processing system with data storage on plural loop transmission line
An information processing system includes a loop-shaped signal transmission line for transmitting data to be stored, a plurality of transmission control processors disposed around the transmission line, and information processing units for inputting and o...
08/09/1988
4228419Emergency vehicle traffic control system
The present system provides a traffic signal control system which will allow moving emergency vehicles to remotely take control of the traffic signals at an intersection. The transmitter part of the system utilizes a microwave transmitter that is mounted ...
10/14/1980
4196417Single transmission line interrogated multiple channel data acquisition system
A single transmission line interrogated multiple channel data acquisition system is provided in which a plurality of remote station/sensor circuits each monitors a specific process variable and each transmits measurement values over a single transmission ...
04/01/1980
3973241Information transmission system
A remote control system utilizing an alternating signal, in which the duration of the signal is measured with respect to a time frame composed of a succession of adjacent time groups each subdivided into a succession of adjacent time channels. A first ite...
08/03/1976
3968477Control apparatus for electrical devices
A control apparatus for controlling a plurality of electrical devices comprising a plurality of electrical devices, a central operation device for generating a plurality of control signals for controlling the electrical devices, the plurality of control s...
07/06/1976
 
Sign InRegister
Username  
Password   
forgot password?