Research/Patents/US 4651332
US 4651332

SECTOR SCAN COMPUTER

Assignee

Filed

Jun 2, 1972

Granted

Mar 17, 1987

Location

ALEXANDRIA VA US

Abstract

A sector-scan period computer comprising a pulse-width discriminator and aulse-interval filter to allow only pulses falling into a predetermined width range and with a given time interval between them to pass. These pulses are fed to an integrator which provides an integrated signal for each group (burst) of pulses, the bursts being periodic. The integrated signals are divided by two and a pulse is produced for each signal that remains. Extraneous non-periodic signals are filtered out by a period filter and the time between successive pulses is counted by a BCD counter. The counter output is stored in a memory and displayed by a decimal number display.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Oct 6, 1981

Rescinded

Jun 12, 1986

Duration

4 years, 8 months

Inventor

  • 1BRUCE J. BROWN
Back to patent indexSource: USPTO 35 USC §181 secrecy order records