Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method and apparatus for producing a difference signal between two signal frequencies, and for detection of modulation

Method and apparatus for producing a difference signal between two signal frequencies, and for detection of modulation

US Patent 5732108 · Granted Mar 24, 1998

Estimated economic value: $30,163,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Antenna direction finding in mobile phones2005
Method of calculating the position of a mobile radio station based on shortest p2004
Keyboard and key and telephone apparatus with such a keyboard2004
Wireless communication device2003
Mobile terminal employing 30kHz/200kHz carrier identification2002
contactless coupling between a host unit and a smart card2001
Communication system, a primary radio station, a secondary radio station, and a 2001
Terminal switching to a lower speech codec rate when in a non-acoustically coupl2001
Universal wireless communication system, a transmission protocol, a wireless com2000
Dual band architectures for mobile stations having transmitter linearization fee2000
Radio communication device2000
Flat elementary electrochemical cell and precursor element2000