Cirrus Logic has been granted a patent for methods and apparatus for transferring multiple digital data streams, particularly digital audio data, over a single wire using pulse-length modulation (PLM) modulator circuitry. The technology allows for efficient data transmission and extraction over a first communications link. GlobalData’s report on Cirrus Logic 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 Cirrus Logic, Voice biometrics was a key innovation area identified from patents. Cirrus Logic's grant share as of May 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Digital data transmission circuitry with pulse-length modulator
The granted patent (Publication Number: US12002482B2) discloses digital data transmission circuitry that includes interface circuitry capable of receiving an input signal comprising data pulses representing input data and transmitting them over a first communications link. The interface circuitry consists of pulse-length modulator circuitry that generates data pulses based on input digital data streams and a clock signal, encoding the data bits within each transfer period. The rising and falling edges of the data pulse encode the current data bits of the input digital data streams, allowing for efficient data transmission.
Furthermore, the digital data transmission circuitry can be used for audio data transmission over a single link, such as a wire, bus, or plug-socket connection. The interface circuitry is bi-directional, with the pulse-length modulator circuitry transmitting data pulses during one transfer period and receiving them during another. The occurrence of rising and falling edges of the data pulse is quantized in time within the transfer period, ensuring accurate data encoding. Additionally, the circuitry allows for the encoding of different combinations of input data by selecting between possible data pulses to minimize any DC imbalance over time in the transmitted data pulses. This innovative technology offers a reliable and efficient method for digital data transmission, particularly suited for audio data streams and control data in various electronic devices.
To know more about GlobalData’s detailed insights on Cirrus Logic, buy the report here.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
