Inventor
KELLEY STEPHEN H
17 patents
⚠️ This page may combine multiple inventors who share the name “KELLEY STEPHEN H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
15 patentsUS4484028ANov 20, 1984
Digital loop transceiver having a power up/down circuit
MOTOROLA INC94 citations96
US4432089AFeb 14, 1984
Digital loop transceiver for interfacing a digital PABX to a digital subscriber set via a subscriber line
MOTOROLA INC65 citations96
US4472647ASep 18, 1984
Circuit for interfacing with both TTL and CMOS voltage levels
MOTOROLA INC68 citations95
US4604584AAug 5, 1986
Switched capacitor precision difference amplifier
MOTOROLA INC41 citations92
US4151517AApr 24, 1979
Closed loop companding ratio control for continuously variable slope delta modulation
MOTOROLA INC37 citations92
US4300023ANov 10, 1981
Hybrid circuit
MOTOROLA INC23 citations81
US4618852AOct 21, 1986
Monotonic A/D converter which minimizes circuitry for high order bit conversion
MOTOROLA INC17 citations74
US4387345AJun 7, 1983
Precision gain AC coupled operational amplifier
MOTOROLA INC9 citations73
US4384277AMay 17, 1983
Digital to analog converter
MOTOROLA INC19 citations73
US4370632AJan 25, 1983
Multiple function operational amplifier circuit
MOTOROLA INC15 citations73
US4355285AOct 19, 1982
Auto-zeroing operational amplifier circuit
MOTOROLA INC15 citations73
US4311988AJan 19, 1982
Programmable A-law and μ-law DAC
MOTOROLA INC16 citations73
US4594707AJun 10, 1986
High speed limited distance multiplexed data communications modem using a single twisted pair of conductors
MOTOROLA INC10 citations72
US4689788AAug 25, 1987
Method and apparatus for implementing a cost efficient voice/data communication system with a conventional PBX switch
MOTOROLA INC12 citations69
US4320519AMar 16, 1982
(Sin X)/X correction circuit for a sampled data system
MOTOROLA INC3 citations63