REDUCING FEEDBACK LATENCY

• US 20110271281A1
• Filed: 04/30/2010
• Published: 11/03/2011
• Est. Priority Date: 04/30/2010
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Mandryk, Luciano Baretta
• Granted Patent: US 8,776,091 B2
• Time in Patent Office: Days
• US Class Current: 718/100
• CPC Class Codes: G06F 9/545 where tasks reside in different layers, e.g. user- and kernel-space

Abstract

A latency between an input and its corresponding feedback can be reduced by generating the feedback in a lower-layer software component instead of in an upper-layer software component. The lower-layer component generates the feedback based on one or more parameters associated with a given input type. The parameters were previously created based on, for example, one or more previous inputs. Generating feedback in a lower-layer component reduces the number of software layer boundaries that the input and feedback pass through, thus reducing the latency between the feedback and input.

Claims

1. A computer-implemented method comprising:

determining feedback for input data received at a lower-layer software component in a software system, the system comprising a plurality of software layers, the feedback being determined based at least in part on one or more feedback parameters and using the lower-layer software component, the one or more feedback parameters having been provided by an upper-layer software component in the system prior to the receipt of the input data by the lower-level software component.

2. The computer-implemented method of claim 1, further comprising receiving the one or more feedback parameters from the upper-layer software component using the lower-layer software component.

3. The computer-implemented method of claim 1, the feedback parameters having been determined by the upper-layer software component based at least in part on previous input data for which previous feedback was determined.

4. The computer-implemented method of claim 1, the feedback parameters having been provided by the upper-layer software component in response to starting the software system, accessing a document with the software system, or using a user interface with the software system.

5. The computer-implemented method of claim 1, further comprising modifying a user interface element on an electronic device display based at least in part on the feedback determined using the lower-layer software component.

6. The computer-implemented method of claim 1, the upper-layer software component and the lower-layer software component executing in different threads.

7. The computer-implemented method of claim 1, the upper-layer software component and the lower-layer software component executing in different processes.

8. The computer-implemented method of claim 1, the one or more feedback parameters comprising at least one of a group consisting of an inertia parameter, a boundary parameter and a boundary feedback parameter.

9. The computer-implemented method of claim 1, further comprising determining that the feedback parameters are available for the received input data.

10. The computer-implemented method of claim 1, the lower-layer software component executing on a first computer and the upper-layer software component executing on a second computer.

11. The computer-implemented method of claim 1, the feedback being determined without sending the input data to the upper-layer software component.

12. The computer-implemented method of claim 1, the one or more feedback parameters having been further determined by a software component operating in a software layer between a layer in which the lower-layer software component operates and a layer in which the upper-layer software component operates.

13. The computer-implemented method of claim 1, further comprising providing at least a portion of the input data to the upper-layer software component.

14. The computer-implemented method of claim 13, the providing at least a portion of the input data to the upper-layer software component comprising:

providing only some of the input data to the upper-layer software component.

15. A system comprising:

a processor; and

one or more computer-readable media having encoded thereon instructions which, when executed by the processor, cause the processor to perform a method, the method comprising,

generating feedback for a user interface element, the feedback being generated in a first software component for a later input based at least in part on one or more feedback parameters provided by a second software component, the feedback parameters having been provided based on an earlier input and before receipt by the system of the later input, wherein exchanging data between the first and second software components requires crossing one or more thread boundaries.

16. The system of claim 15, the method further comprising generating the feedback parameters using the second software component.

17. The system of claim 15, the first software component and the second software component executing in separate software layers in the system, the separate software layers having different abstraction levels.

18. The system of claim 15, the method further comprising executing a default behavior for an input for which a corresponding feedback parameter is unavailable.

19. One or more computer-readable media having encoded thereon instructions which, when executed by a computer, cause the computer to perform a method in a system having at least an upper software layer and a lower software layer, the method comprising:

receiving, at the upper software layer, a description of a first user input of a given type, the upper software layer comprising an application layer;

generating, using the upper software layer, one or more transformations for producing feedback corresponding to the first user input of the given type;

passing the generated one or more transformations to the lower software layer, the lower software layer comprising a rendering layer;

receiving, at the lower software layer, a description of a second user input of the given type; and

generating, using the lower software layer, feedback for the second user input of the given type based at least on part on the generated one or more transformations.

20. The one or more computer-readable media of claim 19, wherein only a portion of the second user input of the given type is passed to the upper software layer.