Patent · US Expired

Video system with programmable VCR

US4717970A · kind A · utility

21Cited by
4References
10Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 28, 1987
Grant dateJan 5, 1988
Priority date
Expiry dateJan 28, 2007

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N7/16
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A video system includes a VCR coupled to the output of a summation circuit that has two inputs. The first input is supplied from an active splitter and the second from a UHF modulator/upconverter which has its input connected to the active splitter through a decoder/converter. The output of the summation circuit is coupled through a passive splitter to the VCR and the VCR is connected to the TV receiver in normal fashion. The arrangement permits full use of the VCR capabilities.

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