Fujitsu grant share with future of work as a theme is 31% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Clock frequency adjusting circuit and method for adjusting clock frequency (Patent ID: US20240072778A1)

The patent filed by Fujitsu Ltd. describes an adjusting circuit that detects noise in electric power inputted into an integrated circuit operating with a clock signal and adjusts the clock frequency accordingly. The detection circuit includes delay circuits that output delayed clock signals based on the operation voltage and a threshold voltage, with a detection signal output circuit comparing the phases of these signals to determine the presence of noise. The controlling circuit then switches between a first clock signal with a higher frequency and a second clock signal with a lower frequency in response to the detection signal.

The patent also outlines a method for adjusting the clock frequency in the circuit, involving the output of delayed clock signals from the detection circuit based on different voltages, comparison of these signals to detect noise, and subsequent adjustment of the clock frequency by the controlling circuit. An adjustment circuit is included to fine-tune the delays in the delay circuits to ensure they fall within a clock cycle of the first clock frequency. Additionally, the method includes storing delay amounts for different voltage and frequency combinations and adjusting these delays dynamically based on changes in the operation voltage or clock frequency of the integrated circuit.

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