公开(公告)号：US20240320776A1

公开(公告)日：2024-09-26

申请号：US18125046

申请日：2023-03-22

Applicant: Apple Inc.

Inventor： Hoi Man S. Ng ,  Oren Kerem ,  Wayne Eric Burk ,  Michael Bekerman ,  Marc A Schaub

IPC: G06T1/20

CPC classification number: G06T1/20

Abstract: Embodiments relate to generating a Quality of Service (QOS) parameter indicating latency tolerance of an image signal processor by determining and processing latency tolerance values of its individual pipeline circuits. At least a subset of the pipeline circuits that performs image processing functions generates their individual latency tolerance values. Each of the individual latency tolerance value is determined as a difference between a sampling time at which an operation is performed on certain pixel data and a latest time by which the operation should be performed on the same pixel data. The individual latency tolerance values generated in this manner provides a mechanism to determine the QoS parameter relevant to an image signal processing scheme that involves access to memory multiple times to save and retrieve intermediate pixel data and process incoming pixel data in a real-time manner.

公开(公告)号：US12081892B1

公开(公告)日：2024-09-03

申请号：US18120208

申请日：2023-03-10

Applicant: Apple Inc.

Inventor： Wayne Eric Burk ,  Oren Kerem ,  Hoi Man S. Ng ,  Michael Bekerman

IPC: H04N25/76 ,  H04N17/00 ,  H04N23/95 ,  H04N25/703

CPC classification number: H04N25/7795 ,  H04N17/002 ,  H04N23/95 ,  H04N25/703

Abstract: Embodiments relate to detecting a timeout error on receipt of valid pixel data from an image sensor by a sensor interface circuit. When the valid pixel data is not timely received at the sensor interface circuit, a timeout error signal is generated by the sensor interface circuit. A time limit for determining the timeout error signal may be defined by a global clock that provides a clock signal to the sensor interface circuit and other circuits. As a result, the sensor interface circuit generates a dummy frame and sends out the dummy frame to subsequent circuits so that the timeout error does not bottleneck subsequent processing stages. In contrast, if the valid pixel data is timely received, sensor data received from the image sensor is unpacked into a frame of pixels.

公开(公告)号：US20240305911A1

公开(公告)日：2024-09-12

申请号：US18120208

申请日：2023-03-10

Applicant: Apple Inc.

Inventor： Wayne Eric Burk ,  Oren Kerem ,  Hoi Man S. Ng ,  Michael Bekerman

IPC: H04N25/76 ,  H04N17/00 ,  H04N23/95 ,  H04N25/703

CPC classification number: H04N25/7795 ,  H04N17/002 ,  H04N23/95 ,  H04N25/703

Abstract: Embodiments relate to detecting a timeout error on receipt of valid pixel data from an image sensor by a sensor interface circuit. When the valid pixel data is not timely received at the sensor interface circuit, a timeout error signal is generated by the sensor interface circuit. A time limit for determining the timeout error signal may be defined by a global clock that provides a clock signal to the sensor interface circuit and other circuits. As a result, the sensor interface circuit generates a dummy frame and sends out the dummy frame to subsequent circuits so that the timeout error does not bottleneck subsequent processing stages. In contrast, if the valid pixel data is timely received, sensor data received from the image sensor is unpacked into a frame of pixels.