Bose has been granted a patent for a self-powered speaker system that includes a processor, audio signal and control connector, dedicated power supply, front end backup power supply, and power connector. The system allows for audio signal and control communication between modules and includes an amplifier module in each module. GlobalData’s report on Bose gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Bose, acoustic authentication was a key innovation area identified from patents. Bose's grant share as of September 2023 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Self-powered speaker system with backup power supply and amplifier module
A recently granted patent (Publication Number: US11778380B2) describes a self-powered speaker system and line array with backup power capabilities. The system includes multiple modules, each equipped with a processor and an audio signal and control connector for communication between modules. The system also features a dedicated power supply and a front end backup power supply.
The first module, along with other modules in the speaker system, includes an amplifier module. The power connector enables input power from an AC power source to the dedicated power supply and output power from the front end backup power supply. The output power, which is DC power, is sent to a front end power supply for a control circuit. This control circuit includes a field programmable gate array (FPGA) section for controlling the audio signal and communication.
In the event of a front end power supply failure, the output power from the front end backup power supply is available for use. It is designed to support the FPGA section for a defined period, ensuring uninterrupted operation of the control circuit. The FPGA is also configured to mitigate latency between digital audio signals received at the first module and other modules.
The patent also describes a self-powered line array, which consists of multiple speaker systems. Each speaker system includes a first module and may also include a second module. The modules are connected via daisy chained connections. The amplifier modules in distinct speaker systems are also connected in a daisy chained configuration.
The line array system includes an input power source, a front end power supply, and a control circuit connected to the front end power supply. The power connector enables input power to the dedicated power supply and output power from the front end backup power supply. The control circuit, which includes an FPGA section, can utilize the output power in case of a front end power supply failure.
The line array system further includes a power distribution block for providing power to each speaker system and a signal distribution block for distributing digital audio signals and control signals. Additional modules, apart from the first module, can receive digital audio signals and control signals directly from the signal distribution block.
Overall, this patent describes a self-powered speaker system and line array with backup power capabilities, ensuring uninterrupted audio signal and control communication in case of power failures. The use of FPGA technology helps in reducing latency and maintaining efficient signal processing.