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Patent Agency Ranking
公开(公告)号：US20170245052A1
公开(公告)日：2017-08-24
申请号：US15591808
申请日：2017-05-10
CPC classification number: H04R3/00 , H03F3/183 , H03F2200/03 , H03G3/348 , H04R29/004 , H04R2420/03 , H04R2420/05
Abstract: A host device for use with a removable peripheral apparatus having a microphone, and to the biasing circuitry for said microphone. The host device may have a device connector for forming a mating connection with a respective peripheral connector. A source of bias is arranged to supply an electrical bias to a device microphone contact of the device connector via a biasing path. A capacitor is connected between a reference voltage node and a capacitor node of the biasing path. A first switch is located between the capacitor node and the device microphone contact. Detection circuitry detects disconnection of the peripheral connector and device connector; and control circuitry controls the switch to disable the biasing path.
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公开(公告)号：US20170078814A1
公开(公告)日：2017-03-16
申请号：US15342232
申请日：2016-11-03
IPC: H04R29/00
CPC classification number: H04R3/00 , H03F3/183 , H03F2200/03 , H03G3/348 , H04R29/004 , H04R2420/03 , H04R2420/05
Abstract: A host device for use with a removable peripheral apparatus having a microphone, and to the biasing circuitry for said microphone. The host device may have a device connector for forming a mating connection with a respective peripheral connector. A source of bias is arranged to supply an electrical bias to a device microphone contact of the device connector via a biasing path. A capacitor is connected between a reference voltage node and a capacitor node of the biasing path. A first switch is located between the capacitor node and the device microphone contact. Detection circuitry detects disconnection of the peripheral connector and device connector; and control circuitry controls the switch to disable the biasing path.
Abstract translation: 用于与具有麦克风的可移动外围设备一起使用的主机设备，以及用于所述麦克风的偏置电路。 主机设备可以具有用于与相应的外围连接器形成配合连接的设备连接器。 偏置源被布置成经由偏置路径向设备连接器的设备麦克风接触件提供电偏压。 电容器连接在参考电压节点和偏置路径的电容器节点之间。 第一个开关位于电容器节点和设备麦克风接点之间。 检测电路检测外围连接器和设备连接器的断开; 并且控制电路控制开关以禁用偏置路径。
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公开(公告)号：US20190220430A1
公开(公告)日：2019-07-18
申请号：US16256162
申请日：2019-01-24
Inventor： Robert David RAND , Graeme Gordon MACKAY , Andrew James HOWLETT
CPC classification number: G06F13/385 , G06F13/122 , G06F13/382 , G06F13/4022
Abstract: This application relates to methods and apparatus for transfer of data between a host device (400) and a peripheral device (300) via a USB Type-C connector (100; 304) of the host device. A data controller is described that has a path controller (309, 310; 706) for establishing signal paths between circuitry of the host device and contacts (101) of said USB Type-C connector. The path controller is operable in at least first and second modes. In the first mode the path controller establishes separate signal paths to each of at least first, second, third and fourth contacts (A6, A7, B6, B7) of the USB Type-C connector and a plurality of the established signal paths are for transfer of analogue audio data. In the second mode the path controller establishes a pair of signal paths to only a subset of said first to fourth contacts to provide a differential digital data path.
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公开(公告)号：US20180376246A1
公开(公告)日：2018-12-27
申请号：US16020027
申请日：2018-06-27
Inventor： Andrew James HOWLETT
Abstract: This application relates to methods and apparatus for monitoring the operating state of an audio circuit, and in particular for detecting a defective operating state, as may occur after an Electrical Over-Stress (EOS) event. An audio circuit (210) has an input node (103) for receiving an input audio signal (SIN) and an output node (104) for outputting an output audio signal (AOUT) for driving an audio load. A monitoring module (202) receives a first signal (S1) derived from the output audio signal and a second signal (S2) indicative of the input audio signal. The monitoring module (202) monitors the first signal (S1) with respect to the second signal (S2) to determine whether at least one parameter of the first signal corresponds to an expected parameter value based on the indication of input audio signal. If the parameter does not correspond to the expected parameter value, the monitoring module (202) outputs an indication (CTRL) of a defective operating state of the audio circuit (201).
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公开(公告)号：US20170346242A1
公开(公告)日：2017-11-30
申请号：US15591764
申请日：2017-05-10
Inventor： Andrew James HOWLETT , Gordon RUSSELL
Abstract: This application relates to monitoring of electronic devices (100) and in particular to methods and apparatus for the detection and recording of an electrical overstress applied to a connector (101, 102) of the device. The apparatus describes an integrated circuit integrated circuit (103, 105, 106a) of the host device having a first set of one or more circuit contacts (201, 203, 204, 205) for connection to a connector (101) of a host electronic device. The circuit has an electrical overstress monitor (106, 106a) for detecting and recording an electrical overstress comprising a voltage exceeding a predetermined parameter applied to at least one of said first set of circuit contacts. The electrical overstress monitor (106) may have an overvoltage detector (205) and may have a memory (206) for recording the occurrence of an overvoltage and/or a communication module (207) for communicating with other components of the host device in the event of an electrical overstress.
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