MegaChips has been granted a patent for an integrated circuit device featuring a MEMS resonator that compensates for temperature-dependent frequency variations. The device includes temperature sensors and circuitry to generate a timing signal with reduced temperature variation, along with digital correction factors for external timing signal adjustments. GlobalData’s report on MegaChips gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on MegaChips, Cloud gaming was a key innovation area identified from patents. MegaChips's grant share as of July 2024 was 63%. Grant share is based on the ratio of number of grants to total number of patents.
Temperature-compensated timing signal generator using mems resonator
The patent US12047071B1 describes an integrated circuit device that incorporates a microelectromechanical systems (MEMS) resonator and associated circuitry designed to manage temperature-dependent variations in resonant frequency. The device consists of a first die housing the MEMS resonator, which vibrates at a frequency that varies with temperature, and at least one sensor that measures both the operating temperature of the resonator and its resonant frequency. A second die contains circuitry that processes the signals from the sensor to generate a timing signal with reduced low-order temperature-dependent variation. Additionally, the circuitry identifies digital correction factors that represent the high-order components of this variation, which can be used by an external device to further refine the timing signal.
The claims also detail various configurations of the device, including the placement of sensors on either die, the use of thermistors, and the implementation of analog temperature compensation using complementary metal oxide semiconductor (CMOS) technology. The design allows for the integration of multiple MEMS resonators, enabling the circuitry to generate signals that account for temperature variations based on the divergence of their respective frequencies. Furthermore, the circuitry may utilize a locked-loop system for temperature-based adjustments and can incorporate look-up tables for retrieving correction factors. Overall, this patent presents a sophisticated approach to enhancing the stability and accuracy of timing signals in integrated circuit applications, particularly in environments where temperature fluctuations are a concern.
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