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公开(公告)号：US20180352328A1
公开(公告)日：2018-12-06
申请号：US15995455
申请日：2018-06-01
Inventor： Ross Crawford MORGAN , Robert David RAND , Richard Colin FITZGERALD
Abstract: There is provided an apparatus for providing an output signal to an audio transducer, comprising: a first signal path for receiving a first digital audio input signal, applying a first digital gain, and outputting an amplified first digital audio input signal; a second signal path, for receiving a second digital audio input signal, applying a second digital gain, and outputting an amplified second digital audio input signal; converter circuitry, coupled to the first and second signal paths, for converting at least the amplified first and second digital audio input signals into the analogue domain, and outputting an analogue audio input signal; and an analogue gain element, for applying an analogue gain to the analogue audio input signal and outputting the output signal. The apparatus further comprises a control circuit, coupled to the first and second signal paths, operative to select the analogue gain based on a combination of at least the first and second digital audio input signals or signals derived therefrom, and to select the first and second digital gains so as to compensate for the analogue gain.
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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：US20190132681A1
公开(公告)日：2019-05-02
申请号：US16233676
申请日：2018-12-27
Inventor： Robert David RAND , John Laurance PENNOCK
Abstract: Embodiments of the present disclosure relate to methods and apparatus for peripheral device discovery, the detection of orientation of a connector having multiple degrees of rotational symmetry, and the provision of appropriate signal paths between a host device and a peripheral device. Some embodiments provide a characteristic impedance within the peripheral device that is coupled between rotationally symmetric contacts of the connector and thus enables detection of the connector orientation. The value of the characteristic impedance may be used in some embodiments to determine the type or model of peripheral device. Some embodiments are concerned with the enablement of appropriate signal paths to a peripheral device having a transducer (e.g. a loudspeaker) coupled only to rotationally symmetric contacts of the connector, such as headphones implemented in a “balanced” configuration.
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公开(公告)号：US20190230458A1
公开(公告)日：2019-07-25
申请号：US15875175
申请日：2018-01-19
Inventor： Robert David RAND
Abstract: The present disclosure relates to a system for providing an acknowledgement output at an output transducer of a device in response to detection of a trigger signal. The system includes an input transducer, a signal processor, a main processor separate from the signal processor and an output driver. The signal processor monitors an input signal received at the signal processor from the input transducer and outputs an acknowledgement signal to the output driver if the received input signal corresponds to the trigger signal. The signal processor also outputs an interrupt signal to the main processor to cause the main processor to enter an active state. In this way an acknowledge output can rapidly be provided to a user of the system, as there is no need to wait until the main processor has entered its active state and processed the trigger signal.
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公开(公告)号：US20190227628A1
公开(公告)日：2019-07-25
申请号：US15875512
申请日：2018-01-19
Inventor： Robert David RAND , Tony Stephen DOY , Thomas Ivan HARVEY
IPC: G06F3/01 , G06F3/16 , G06F3/041 , G06F3/0488
Abstract: The present disclosure relates to a system for providing substantially synchronised haptic and audio outputs. The system includes a signal processor which is configured to receive an audio signal from a main processor of the system and to receive a haptic signal, which may be received from the main processor, or may be retrieved from memory, or else may be generated in real-time by the signal processor. The signal processor calculates a delay to be applied to the haptic signal or the audio signal and outputs a delayed version of the audio signal and the haptic signal, or a delayed version of the haptic signal and the audio signal, to appropriate output stages.
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Patent Agency Ranking
公开(公告)号：US20180246158A1
公开(公告)日：2018-08-30
申请号：US15906354
申请日：2018-02-27
Inventor： Jonathan TAYLOR , Robert David RAND , Charles KEEPAX
Abstract: Circuits for monitoring a socket are disclosed, including a circuit comprising a first node arranged to be electrically connected to a first pole of an electrical plug when the electrical plug is inserted into a corresponding socket, a second node arranged to be connected to a first voltage, wherein the first node is arranged to be connected to the first pole when the electrical plug is inserted into the socket, a variable resistance connected between the first node and a third node, wherein the third node is arranged to receive a second voltage, detection circuit arranged to detect the presence of the electrical plug or moisture in the socket based on a voltage at the first node, and a control circuit arranged to control the variable resistance to a first resistance value and, in response to the detection circuit detecting the presence of the electrical plug or moisture in the socket when the variable resistance is at the first resistance value, to a second resistance value, whereby the detection circuit distinguishes between the electrical plug and moisture within the socket.
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公开(公告)号：US20190394592A1
公开(公告)日：2019-12-26
申请号：US16562037
申请日：2019-09-05
Inventor： Robert David RAND
Abstract: The present disclosure relates to a system for providing an acknowledgement output at an output transducer of a device in response to detection of a trigger signal. The system includes an input transducer, a signal processor, a main processor separate from the signal processor and an output driver. The signal processor monitors an input signal received at the signal processor from the input transducer and outputs an acknowledgement signal to the output driver if the received input signal corresponds to the trigger signal. The signal processor also outputs an interrupt signal to the main processor to cause the main processor to enter an active state. In this way an acknowledge output can rapidly be provided to a user of the system, as there is no need to wait until the main processor has entered its active state and processed the trigger signal.
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公开(公告)号：US20190261076A1
公开(公告)日：2019-08-22
申请号：US16279148
申请日：2019-02-19
Inventor： Bradley Allan LAMBERT , Michael Allan KOST , Robert David RAND , Ian Johnson SMITH
Abstract: There is provided a USB audio accessory device, comprising: an audio transducer, configured to generate an audio transducer signal; interface circuitry, configured to receive analogue and digital representations of the audio transducer signal; and a USB-C connector for connecting to a USB host device, coupled to the interface circuitry. The interface circuitry is operable, in a first mode of operation, to output simultaneously the analogue representation of the audio transducer signal over a first pin of the USB-C connector, and the digital representation of the audio transducer signal over second and third pins of the USB-C connector.
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公开(公告)号：US20180349296A1
公开(公告)日：2018-12-06
申请号：US15988593
申请日：2018-05-24
Inventor： Robert David RAND , Bradley Allan LAMBERT
Abstract: Interface circuitry is provided for a host device, the interface circuitry for controlling data connections between the host device and a peripheral device. The interface circuitry comprises: a discovery module, operable to detect mating of a connector of the peripheral device with a connector of the host device, and to store an indication of the current mating status of the connector of the host device; and a data connection management module, configured to: responsive to detection of mating between the connector of the peripheral device and the connector of the host device by the discovery module, establish a digital data connection between the connector of the peripheral device and the connector of the host device; responsive to detection of a deactivation event and based on the stored indication of the mating, deactivate the digital data connection; and responsive to detection of an activation event and based on the stored indication of the mating, re-establish the digital data connection between the connector of the peripheral device and the connector of the host device.
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公开(公告)号：US20180027330A1
公开(公告)日：2018-01-25
申请号：US15659276
申请日：2017-07-25
Inventor： Robert David RAND , John Laurence PENNOCK
CPC classification number: H04R5/04 , G06F13/387 , H01R13/66 , H01R29/00 , H04R1/1041 , H04R1/1083 , H04R2420/01 , H04R2420/05 , H04R2420/09
Abstract: Embodiments of the present disclosure relate to methods and apparatus for peripheral device discovery, the detection of orientation of a connector having multiple degrees of rotational symmetry, and the provision of appropriate signal paths between a host device and a peripheral device. Some embodiments provide a characteristic impedance within the peripheral device that is coupled between rotationally symmetric contacts of the connector and thus enables detection of the connector orientation. The value of the characteristic impedance may be used in some embodiments to determine the type or model of peripheral device. Some embodiments are concerned with the enablement of appropriate signal paths to a peripheral device having a transducer (e.g. a loudspeaker) coupled only to rotationally symmetric contacts of the connector, such as headphones implemented in a “balanced” configuration.
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