Inventor

JOHNSTON JAMES D

51 patents

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

JOHNSTON JAMES D

AT & T BELL LAB

Method and apparatus for coding audio signals based on perceptual model

Adaptive non-linear quantizer

Perceptual coding of audio signals

Perceptual coding of audio signals

High definition television coding arrangement with graceful degradation

Image processing system

Method and apparatus for two-component signal compression

Adaptive leak hdtv encoder

JOHNSTON JAMES D

Spatial audio encoding and reproduction

Stereo image widening

Loudness-based compensation for background noise

Multichannel sound rendering via virtualization in a stereo loudspeaker system

Loudspeaker array providing direct and indirect radiation from same set of drivers

Interaural time delay restoration system and method

AT & T CORP

Method and apparatus for coding audio signals based on perceptual model

Perceptual coding of audio signals using entropy coding and/or multiple power spectra

Perceptually-adapted image coding system

Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels

Tailored error protection

ETHYL CORP

Process for producing magnesium utilizing aluminum metal reductant

Process for producing magnesium utilizing aluminum-silicon alloy reductant

Process for producing magnesium utilizing aluminum metal reductant

Nickel extraction process

Process for preparation of organic acid halide

NASA

Wrist joint assembly

Pneumatic inflatable end effector

Combined docking and grasping device

Apparatus for assembling space structure

LUCENT TECHNOLOGIES INC

Rate loop processor for perceptual encoder/decoder

Method and apparatus for two-component signal compression

Noise imaging protection for multi-channel audio signals

SMIRNOV SERGE

Perceptually weighted digital audio level compression

Dynamic bass boost filter

Bass boost filtering techniques

Immersion Services LLC

Adaptive audio decoder system, method and article

Adaptive audio codec system, method and article

Adaptive audio encoder system, method and article

BELL TELEPHONE LABOR INC

Silence editing speech processor

Endpoint detector

JOT JEAN-MARC

Encoding and reproduction of three dimensional audio soundtracks

Spatial audio encoding and reproduction of diffuse sound

DTS INC

Spatial audio encoding and reproduction of diffuse sound

Room characterization and correction for multi-channel audio

SIRIVARA SUDHEER

Digital media universal elementary stream

Digital media universal elementary stream

AMERICAN TELEPHONE & TELEGRAPH

Sound location arrangement

FEJZO ZORAN

Room characterization and correction for multi-channel audio

ZHANG ZHENGYOU

Virtual sound source positioning

THOMPSON MATTHEW T

Femoral implant for hip arthroplasty

INST OF ORTHOPEDIC RES AND EDU

Femoral implant for hip arthroplasty