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公开(公告)号：US12249298B2
公开(公告)日：2025-03-11
申请号：US17926036
申请日：2020-07-21
Applicant: QUALCOMM Incorporated
Inventor： Xinchao Yang , Nan Zhang , Yongjun Xu
Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for reducing gamut mapping luminance loss. A gain value of at least one primary color may be reduced in a native color gamut based on an analog technique (e.g., using a DDIC in a display panel) to provide a reduced color gamut that is smaller than the native color gamut. The reduced color gamut may have a same luminance as the native color gamut. One or more colors included in the native color gamut may be mapped via a digital technique (e.g., using a DPU or other processor) to the reduced color gamut. The mapping may be configured to provide a threshold level of color accuracy in the reduced color gamut.
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公开(公告)号：US20230164426A1
公开(公告)日：2023-05-25
申请号：US17768092
申请日：2020-10-16
Applicant: QUALCOMM Incorporated
Inventor： Yongjun Xu , Zack Qing Zhou , Nan Zhang
CPC classification number: H04N23/632 , H04N5/2628 , H04N23/53 , H04N23/81 , H04N23/85 , H04N23/667 , H04M1/0264
Abstract: An example image capture device includes a display configured to display captured images, a camera sensor, the camera sensor being disposed to receive light through at least a portion of the display, memory configured to store captured images, and one or more processors coupled to the camera sensor, the display, and the memory. The one or more processors are configured to receive a signal from a sensor. The one or more processors are configured to determine, based at least in part on the signal, a user interface mode. The user interface mode includes a first mode having a first number of black pixels or a second mode having a second number of black pixels. The first number is greater than the second number. The one or more processors are also configured to receive image data from the camera sensor.
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公开(公告)号：US11579247B2
公开(公告)日：2023-02-14
申请号：US16559175
申请日：2019-09-03
Applicant: QUALCOMM Incorporated
Inventor： Roberto Rimini , Nan Zhang , Brian Clarke Banister
Abstract: Aspects of the present disclosure provide a simplified solution for proximity detection of an object in a wireless communication that does not require complex hardware to maintain mutual coupling reference signal. Specifically, in accordance with aspects of the present disclosure, the received signal that may include the mutual coupling signal and target signal may be multiplied by itself to extract the delay information associated with the target signal. The techniques outlined here may provide a greater robustness to variations of mutual coupling induced by phone covers, for example, being added by the user.
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公开(公告)号：US12094028B2
公开(公告)日：2024-09-17
申请号：US17909989
申请日：2020-04-08
Applicant: QUALCOMM Incorporated
Inventor： Zhibing Zhou , Mohammed Naseer Ahmed , Xinchao Yang , Nan Zhang , Yongjun Xu
Abstract: In some aspects, the present disclosure provides a method for high dynamic range (HDR) video rotation. The method includes receiving, by a display processor, an indication that a frame rotation animation process for video playback has been initiated, the display processor comprising a display processor pipeline. The method also includes determining whether the video playback is an HDR format or another format. In response to the determination and receiving the indication: bypassing a loading of the frame rotation animation into a first portion of the display processor pipeline, and loading the frame rotation animation into a second portion of the display processor pipeline if the video playback is in an HDR format.
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公开(公告)号：US11984098B2
公开(公告)日：2024-05-14
申请号：US18546012
申请日：2021-04-20
Applicant: QUALCOMM Incorporated
Inventor： Nan Zhang , Bo Du , Ya Kong , Yongjun Xu
IPC: G09G5/393
CPC classification number: G09G5/393 , G09G2320/103 , G09G2320/106 , G09G2360/18
Abstract: Embodiments include methods and devices for per layer motion adaptive over-drive strength control for a display panel. Various embodiments may include determining motion information associated with a frame layer, determining an over-drive strength factor for the frame layer based at least in part on the motion information associated with the frame layer, and determining whether the over-drive strength factor is associated with computing a content difference. Various embodiments may include, in response to determining that the over-drive strength factor is associated with computing a content difference, performing fragment shading on the framebuffer object for the frame layer to generate an over-drive compensated framebuffer object for the frame layer based at least in part on the over-drive strength factor, and outputting the over-drive compensated framebuffer object for the frame layer to a default framebuffer for rendering on the display panel.
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Patent Agency Ranking
公开(公告)号：US11929047B2
公开(公告)日：2024-03-12
申请号：US18041386
申请日：2020-10-22
Applicant: QUALCOMM Incorporated
Inventor： Nan Zhang , Xinchao Yang , Yongjun Xu
IPC: G09G5/18
CPC classification number: G09G5/18 , G09G2340/0435
Abstract: Systems, methods, and non-transitory media are provided for dynamically switching frame rates without changing a display refresh rate. An example method can include receiving, from a display device associated with a computing device, a set of control signals indicating a display refresh rate implemented by the display device; adjusting a frame rate associated with application data from one or more applications executed on the computing device; synchronizing, based on the set of control signals, the adjusted frame rate with two or more display refresh cycles, each display refresh cycle being based on the display refresh rate; providing, to the display device, a first frame at the adjusted frame rate, the first frame being generated based on the application data; and displaying the first frame at the display device implementing the display refresh rate.
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公开(公告)号：US11653329B2
公开(公告)日：2023-05-16
申请号：US17369515
申请日：2021-07-07
Applicant: QUALCOMM Incorporated
IPC: H04W68/02 , H04W68/00 , H04W72/044 , H04B17/318
CPC classification number: H04W68/005 , H04B17/318 , H04W72/046
Abstract: Aspects of the present disclosure relate to wireless communications, and more particularly, to mobility techniques that allow for beam-specific paging in wireless communication systems. An example method generally includes transmitting, to a network entity, an indication of a mobility state of the UE, wherein the indication is transmitted based on a synchronization signal block (SSB) associated with a selected beam direction; and monitoring paging occasions for paging sent using a beam that is quasi-colocated with the selected beam direction associated with the SSB.
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公开(公告)号：US20200029345A1
公开(公告)日：2020-01-23
申请号：US16454828
申请日：2019-06-27
Applicant: QUALCOMM Incorporated
Inventor： Rahul Malik , Jong Hyeon Park , Udara Fernando , Alexei Yurievitch Gorokhov , Nan Zhang , Junsheng Han , Scott Hoover , Ruhua He
IPC: H04W72/12 , H04W76/27 , H04W74/08 , H04W56/00 , H04W24/10 , H04L27/36 , H04W76/28 , H04W68/00 , H04W72/04
Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform calibration of a transceiver chain to maintain or improve operation of a device or comply with legal or protocol requirements. The UE may receive one or more wireless signals indicating a first set of resources where the first device is scheduled to transmit or receive communications. The UE may calibrate a wireless transceiver chain of the first device in a second set of resources. The second set of resources excludes the first set of resources and includes at least a portion of a third set of resources. The third set of resources are resource in which the first device has an option to transmit or receive communications based on a protocol configuration.
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公开(公告)号：US12211466B2
公开(公告)日：2025-01-28
申请号：US18548179
申请日：2021-04-14
Applicant: QUALCOMM Incorporated
Inventor： Nan Zhang , Ike Ikizyan , Xinchao Yang , Zhizhou Chen
Abstract: Methods and apparatus for graphics processing, such as producing a smooth transition between images of different dynamic ranges (e.g., Standard Dynamic Range (SDR) images and High Dynamic Range (HDR) images). An example method generally includes using a high frame rate during a transition period to allow properties of images to incrementally vary. The properties may include brightness (i.e., luminance), color gamut, tone mapping, among others. For example, during the transition period, a subset of HDR images are displayed at a second frame rate (e.g., 120 Hz) higher than a frame rate based on the HDR images (e.g., 30 Hz). Simultaneously, a brightness level (as well as other aspects) of the display panel is adjusted incrementally from an SDR brightness level to an HDR brightness level during the transition time period over the subset of the HDR images.
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公开(公告)号：US12170071B2
公开(公告)日：2024-12-17
申请号：US18424699
申请日：2024-01-26
Applicant: QUALCOMM Incorporated
Inventor： Nan Zhang , Long Han , Yongjun Xu
Abstract: Methods and apparatuses are provided for alignment of hardware and software Vsync signals through filtering out delayed timestamp signals in a hardware timestamp signal used to generate the software Vsync. The alignment may occur when a display client is operating in a video mode but not a command mode. A compositor or processing unit may receive a hardware Vsync signal from a display using a video mode, generate a hardware timestamp signal based on the hardware Vsync signal, determine a delay for a pulse in the hardware timestamp signal based on a delay for a set of previous frames, determine whether the delay for the pulse is over a threshold, and control rendering and transmission of a frame to the display based on the delay for the pulse being over the threshold. Thus, accurate Vsync signal synchronization may occur.
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