Latency Measurement System And Method
First Claim
1. A latency measurement system, the system comprising:
- an event generation device that generates an event used to measure system latency;
a component test system that receives the event and in response outputs a test component output signal and a zero-latency indicator;
an electronics system including a multifunction display device, where the electronics system receives the test component output signal and displays a visible element on the multifunction display device;
a camera that generates a series of recorded images, where each recorded image contains an image of the zero-latency indicator and an image of the visible element; and
a processor that determines the system latency by determining a time difference in the series of recorded images between a representation of an occurrence of the event in the image of the zero-latency indicator and a representation of the occurrence of the event in the image of the visible element.
1 Assignment
0 Petitions
Accused Products
Abstract
The present disclosure is generally directed to a system for, and method operating a latency measurement system including an event generation device that generates an initial event used to measure system latency. A component test system receives the event and in response outputs a test component output signal and a zero-latency indicator. An electronics system including a multifunction display unit receives the test component output signal and displays a visible element on the multifunction display unit. A camera generates a series of recorded images, where each recorded image contains an image of the zero-latency indicator and an image of the visible element. A processor then determines the system latency by determining a time difference in the series of recorded images between a representation of an occurrence of the event in the image of the zero-latency indicator and a representation of the occurrence of the event in the image of the visible element.
54 Citations
20 Claims
-
1. A latency measurement system, the system comprising:
-
an event generation device that generates an event used to measure system latency; a component test system that receives the event and in response outputs a test component output signal and a zero-latency indicator; an electronics system including a multifunction display device, where the electronics system receives the test component output signal and displays a visible element on the multifunction display device; a camera that generates a series of recorded images, where each recorded image contains an image of the zero-latency indicator and an image of the visible element; and a processor that determines the system latency by determining a time difference in the series of recorded images between a representation of an occurrence of the event in the image of the zero-latency indicator and a representation of the occurrence of the event in the image of the visible element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method of measuring latency, the method comprising:
-
triggering an event that generates an indication of the event at both a test component and a zero-latency indicator at substantially the same time; sending the indication of the event from the test component to a multi-function display device; recording a series of images with a camera, where each image contains both a representation of the zero-latency indicator and a representation of the multi-function display device; processing, by a computing device, the series of images to compute a latency value of the test component based determining a time difference between the indication of the event by the zero-latency indicator and the multi-function display device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
-
19. A method for measuring latency in electronic equipment, comprising:
-
generating pulsed source signals at a sensor aperture and at a multi-functional display; capturing a source illumination and multi-functional display illumination directly and through a sensor path using a high frame rate camera; isolating a plurality of regions of interest for the source illumination and the multi-functional display illumination in video captured by the high frame rate camera; detecting peak thresholds in the regions of interest; creating a plurality of binary waveforms based on the detected peak thresholds; detecting a plurality of edges of the binary waveform measuring one of rising or falling; and measuring a delta time between the source and the multi-functional display edges providing a latency measurement. - View Dependent Claims (20)
-
Specification