Inventor

NGAI HING Y

US8 patents

⚠️ This page may combine multiple inventors who share the name “NGAI HING Y”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

INDEX SYSTEMS INC

4 patents

US6487362B1Nov 26, 2002

Enhancing operations of video tape cassette players

INDEX SYSTEMS INC143 citations97

US6125231ASep 26, 2000

Method of adding titles to a directory of television programs recorded on a video tape

INDEX SYSTEMS INC68 citations95

US7499628B2Mar 3, 2009

Enhancing operations of video tape cassette players

INDEX SYSTEMS INC22 citations92

US6636268B1Oct 21, 2003

VBI inserter

INDEX SYSTEMS INC16 citations83

(unassigned)

2 patents

US5706145AJan 6, 1998

Apparatus and methods for audio tape indexing with data signals recorded in the guard band

125 citations90

US5502694AMar 26, 1996

Method and apparatus for compressed data transmission

12 citations73

GEMSTAR DEV CORP

1 patent

US5619383AApr 8, 1997

Method and apparatus for reading and writing audio and digital data on a magnetic tape

GEMSTAR DEV CORP107 citations96

INDEX SYSTEM INC

1 patent

US6701060B2Mar 2, 2004

Enhancing operations of video tape cassette players

INDEX SYSTEM INC47 citations93