Patent · US Expired

Delay circuits

US4271483A · kind A · utility

5Cited by

3References

2Claims

0Family size

Assignee

Independent Broadcasting Authority · GB

Inventors

John L. E. Baldwin · Warrenville, US
Terence E. Corbyn · London, GB

Key dates

Filing date	Jul 31, 1978
Grant date	Jun 2, 1981
Priority date	—
Expiry date	Jul 31, 1998

Classification

Technology area (CPC H)Electricity
CPC primaryH03K2005/0026
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

Digital delay apparatus for variable delay uses a shift register fixed delay driving a random access memory variable delay. A variable modulus counter controls the read-write addressing, whereby the difference between addresses sets the variable delay of the random access memory. The random access memory capacity is small relative to the shift register for increased efficiency.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.