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公开(公告)号：US09524260B2
公开(公告)日：2016-12-20
申请号：US14308053
申请日：2014-06-18
Applicant: QUALCOMM Incorporated
Inventor： Nir Gerber , Daniel Hyongkyu Kim , Amir Borovietzky , Dan Vardi , Andrey Michael Baranovsky
CPC classification number: G06F13/28 , G06F13/4221 , G06F13/4295 , Y02D10/14 , Y02D10/151
Abstract: Universal serial bus (USB) communication systems and methods are disclosed. In particular, aspects of the present disclosure optimize polling and scheduling of bulk data transfers from bulk endpoints connected through a USB connection. By reducing the amount of polling, and by favoring endpoints that are known to have data to transfer, unnecessary signaling is avoided. Reduction in signaling allows more data to be transferred in a shorter amount of time. Reducing the time required for a data transfer may allow for low power modes to be used, which in turn further saves power.
Abstract translation: 通用串行总线（USB）通信系统和方法被公开。 特别地，本公开的方面优化了通过USB连接连接的批量端点的批量数据传输的轮询和调度。 通过减少轮询量，通过有利于已知具有数据传输的端点，避免了不必要的信令。 信令的减少允许在更短的时间内传输更多的数据。 减少数据传输所需的时间可能允许使用低功耗模式，从而进一步节省功耗。
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公开(公告)号：US20150370733A1
公开(公告)日：2015-12-24
申请号：US14308053
申请日：2014-06-18
Applicant: QUALCOMM Incorporated
Inventor： Nir Gerber , Daniel Hyongkyu Kim , Amir Borovietzky , Dan Vardi , Andrey Michael Baranovsky
CPC classification number: G06F13/28 , G06F13/4221 , G06F13/4295 , Y02D10/14 , Y02D10/151
Abstract: Universal serial bus (USB) communication systems and methods are disclosed. In particular, aspects of the present disclosure optimize polling and scheduling of bulk data transfers from bulk endpoints connected through a USB connection. By reducing the amount of polling, and by favoring endpoints that are known to have data to transfer, unnecessary signaling is avoided. Reduction in signaling allows more data to be transferred in a shorter amount of time. Reducing the time required for a data transfer may allow for low power modes to be used, which in turn further saves power.
Abstract translation: 通用串行总线（USB）通信系统和方法被公开。 特别地，本公开的方面优化了通过USB连接连接的批量端点的批量数据传输的轮询和调度。 通过减少轮询量，通过有利于已知具有数据传输的端点，避免了不必要的信令。 信令的减少允许在更短的时间内传输更多的数据。 减少数据传输所需的时间可能允许使用低功耗模式，从而进一步节省功耗。
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公开(公告)号：US20170371681A1
公开(公告)日：2017-12-28
申请号：US15631088
申请日：2017-06-23
Applicant: QUALCOMM Incorporated
Inventor： Ameya Kulkarni , Andrew Cheung , Jay Yu Jae Choi , Daniel Hyongkyu Kim , Hemant Kumar , Vamsi Krishna Samavedam
CPC classification number: G06F9/4411 , G06F1/3215 , G06F1/3253 , G06F1/3293 , G06F3/16 , G06F3/162 , G06F3/165 , G06F9/44 , G06F13/38 , G06F13/382 , H04L29/06183 , Y02D10/122 , Y02D10/151
Abstract: Systems and methods for using distributed Universal Serial Bus (USB) host drivers are disclosed. In one aspect, USB packet processing that was historically done on an application processor is moved to a distributed USB driver running in parallel on a low-power processor such as a digital signal processor (DSP). While a DSP is particularly contemplated, other processors may also be used. Further, a communication path is provided from the low-power processor to USB hardware that bypasses the application processor. Bypassing the application processor in this fashion allows the application processor to remain in a sleep mode for longer periods of time instead of processing digital data received from the low-power processor or the USB hardware. Further, by bypassing the application processor, latency is reduced, which improves the listener experience.
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