Inventor

ISHIGAKI YUKINOBU

52 patents

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

ISHIGAKI YUKINOBU

VICTOR COMPANY OF JAPAN

Spread spectrum modulating apparatus using either PSK or FSK primary modulation

Spread spectrum communication system

Spread spectrum communication system

Phase-locked loop circuit

Variable directional microphone system

Noise reduction system having series connected low and high frequency emphasis and de-emphasis filters

Spread spectrum modulating and demodulating apparatus for transmission and reception of FSK and PSK signals

Modulation and demodulation system for spread spectrum transmission

Spread spectrum communication system

Noise reducing apparatus

Variable-directivity microphone device

System for removing interference distortion in the demodulated signal of a frequency-modulated signal

Spread spectrum communication system

Noise reduction for stereophonic FM signals by high-speed sampling and linear interpolation

Noise reduction by linear interpolation using a dual function amplifier circuit

Noise reduction by integrating frequency-split signals with different time constants

System for demodulating angle-modulated signals

Apparatus for automatic selective switching and transmission of input signals

Frequency converting circuit

Receiving device for receiving and demodulating spread spectrum-modulated GPS wave

Single-sideband generator suitable for integrated circuits

Circuit for reconstructing noise-affected signals

Quarternary differential PSK demodulator

Impulse noise reduction by linear interpolation having immunity to white noise

Circuit arrangement for reconstructing noise-affected signals

Multipath distortion compensation circuit and method

System for removing interference distortion in the demodulated signal of a frequency-modulated signal

Noise reduction by linear interpolation using a dual function amplifier circuit

Variable-directivity microphone device

Noise reduction system having series connected variable frequency filters

Circuit arrangement for eliminating waveform distortion of an angle-modulated signal transmitted over multipaths

Cancellation of interference distortions caused by intermodulation between FM signals on adjacent channels

Noise reducing apparatus

System for demodulating angle-modulated signals

Demodulation system for spread spectrum communication

Scrambler system

Phase tracked loop frequency demodulator

Frequency converting circuit

Frequency converting circuit

Impulse noise reduction by linear interpolation having a deemphasis characteristic

Circuit arrangement for deriving a level control signal using silicon diodes

Record disc recording system with signal amplitude controlled by stylus arm position

Signal frequency band control system

Audio magnetic recording and/or reproducing apparatus utilizing frequency modulation

Rectifying and smoothing circuit

System for removing interference distortion in the demodulated signal of a frequency-modulated signal

Multichannel record disc recording system

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

Phase locked loop circuit

Phase locked loop angle modulation system with large modulation index

Angle-modulated signal transmission system