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公开(公告)号：US10462269B2
公开(公告)日：2019-10-29
申请号：US15660044
申请日：2017-07-26
Applicant: QUALCOMM Incorporated
Inventor： Raghavendra Bhat Noojady Krishna , Anssi Haverinen , Siva Pavan Kumar Mitnala , Jitendra Prasad , Bijan Timsari
Abstract: Aspects disclosed in the detailed description include packetizing encoded audio frames into compressed-over-pulse code modulation (PCM) (COP) packets for transmission over PCM interfaces. In one aspect, a COP packetizing circuit is configured to receive an encoded audio frame generated from a PCM frame, and generate a COP packet that includes the encoded audio frame irrespective of the audio format. The COP packet is generated with a packet length proportional to a PCM length of the PCM frame, allowing the COP packetizing circuit to transmit the COP packet over an isochronous PCM interface with a lower bit rate than the PCM frame to reduce power. The COP packetizing circuit provides a mobile computing device with a single packetizing scheme that supports multiple audio formats, and allows for reducing power through bit rate scaling.
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公开(公告)号：US20190251056A1
公开(公告)日：2019-08-15
申请号：US16269636
申请日：2019-02-07
Applicant: QUALCOMM Incorporated
Inventor： Neven Klacar , Murali Krishna , Arunn Coimbatore Krishnamurthy , Jitendra Prasad , Jean-Marie Quoc Danh Tran
CPC classification number: G06F13/4291 , G06F2213/0026 , H04J3/0626 , H04J3/0685
Abstract: Systems and methods for providing audio streams over peripheral component interconnect (PCI) express (PCIE) links are disclosed. In particular, exemplary aspects of the present disclosure are used to calculate an uplink timing requirement and adjust a margin time before a modem encodes audio data so that the encoding is done before data is transmitted to an external network. Further aspects of the present disclosure allow a first integrated circuit (IC) to synchronize its clock with that of the modem.
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公开(公告)号：US10915490B2
公开(公告)日：2021-02-09
申请号：US16269636
申请日：2019-02-07
Applicant: QUALCOMM Incorporated
Inventor： Neven Klacar , Murali Krishna , Arunn Coimbatore Krishnamurthy , Jitendra Prasad , Jean-Marie Quoc Danh Tran
Abstract: Systems and methods for providing audio streams over peripheral component interconnect (PCI) express (PCIE) links are disclosed. In particular, exemplary aspects of the present disclosure are used to calculate an uplink timing requirement and adjust a margin time before a modem encodes audio data so that the encoding is done before data is transmitted to an external network. Further aspects of the present disclosure allow a first integrated circuit (IC) to synchronize its clock with that of the modem.
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公开(公告)号：US20180048744A1
公开(公告)日：2018-02-15
申请号：US15660044
申请日：2017-07-26
Applicant: QUALCOMM Incorporated
Inventor： Raghavendra Bhat Noojady Krishna , Anssi Haverinen , Siva Pavan Kumar Mitnala , Jitendra Prasad , Bijan Timsari
CPC classification number: H04L69/324 , G10L19/167 , H04B14/04 , H04L12/10
Abstract: Aspects disclosed in the detailed description include packetizing encoded audio frames into compressed-over-pulse code modulation (PCM) (COP) packets for transmission over PCM interfaces. In one aspect, a COP packetizing circuit is configured to receive an encoded audio frame generated from a PCM frame, and generate a COP packet that includes the encoded audio frame irrespective of the audio format. The COP packet is generated with a packet length proportional to a PCM length of the PCM frame, allowing the COP packetizing circuit to transmit the COP packet over an isochronous PCM interface with a lower bit rate than the PCM frame to reduce power. The COP packetizing circuit provides a mobile computing device with a single packetizing scheme that supports multiple audio formats, and allows for reducing power through bit rate scaling.
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