Adam Leitch is a notable inventor based in Brighton, GB. He has made significant contributions to the field of technology, particularly in the area of time measurement and signal propagation. With a total of 6 patents to his name, Leitch continues to push the boundaries of innovation.

Latest Patents

One of Adam Leitch's latest patents is focused on measuring clock jitter. This invention involves a device and method that corrects time data based on a clock signal affected by jitter. The error due to jitter in a time measurement of an event in the clock signal is determined at the time of the event or as an average over several events. A measurement is made of a time-dependent reference variable associated with a long-time constant device, such as a capacitor, which is relatively immune to localized jitter. The measurement may involve reading the voltage across a charging capacitor. The measured value is then compared to an expected value, and the time error is based on this comparison. The expected value may be stored or calculated from known charging rates of the capacitor. The error due to jitter in a time measurement is approximately linearly proportional to the difference in voltage between the measured and expected values of the capacitor.

Another significant patent by Leitch involves measuring the distance between devices. This invention addresses the challenge of first and second devices having clocks that may operate at different rates. To obtain a measure of the distance of propagation of a signal passing between the devices, a first signal is transmitted from the first device to the second device. After a turnaround time (TAT), a second signal is sent back from the second device to the first device. Any error in the clocks may lead to inaccuracies in the measurement of the turnaround time. One device contains circuitry to calculate the ratio of the clock rates of the first and second devices, either by adjusting frequency divider ratios until there is a low-frequency match or by determining the offset frequency of an envelope of a mixed signal. This ratio is then used to compensate for the turnaround time, mitigating potential errors. The accurate distance measurement can also be utilized to determine if a relay attack has occurred in a vehicle security system.

Career Highlights

Adam Leitch is currently employed at Koninklijke Philips Corporation N.V., where he continues to innovate and develop new technologies. His work has had a significant impact on the field, particularly in enhancing the accuracy of time

Profile summary based on public USPTO records.

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