US 11,457,173 B2Granted

Dynamic frame rate adjustment mechanism

AssigneeMediatek Inc.

InventorsKang-Yi Fan, Chin-Wen Liang, Chang-Chu Liu, Sheng-Hsiang Chang, You-Min Yeh

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Abstract

The present invention provides a control method of a processor, wherein the control method comprises the steps of: transmitting image data of a first frame to an integrated circuit, wherein the first frame corresponds to a first frame rate; determining a second frame rate of a second frame next to the first frame; determining if a difference between the second frame rate and the first frame rate belongs to a large scale frame rate adjustment or a small scale frame rate adjustment; if the difference between the second frame rate and the first frame rate belongs to the large scale frame rate adjustment, using a first mode to transmit image data of the second frame; and if the difference between the second frame rate and the first frame rate belongs to the small scale frame rate adjustment, using a second mode to transmit image data of the second frame.

Claims7

Dependent claims

A control method of a processor, comprising:

transmitting image data of a first frame to an integrated circuit, wherein the first frame corresponds to a first frame rate;
determining a second frame rate of a second frame next to the first frame;
determining if a difference between the second frame rate and the first frame rate belongs to a large scale frame rate adjustment or a small scale frame rate adjustment;
if it is determined that the difference between the second frame rate and the first frame rate belongs to the large scale frame rate adjustment, using a first mode to transmit image data of the second frame;
and
if it is determined that the difference between the second frame rate and the first frame rate belongs to the small scale frame rate adjustment, using a second mode to transmit image data of the second frame;
wherein the first mode is selected from one of a plurality command modes, and the second mode is selected from another one of the plurality command modes;
and the plurality of command modes comprises a first command mode, a second command mode and a third command mode, the first command mode is to use the same speed to transmit the image data of the first frame and the second frame when the second frame rate is different from the first frame rate;
the second command mode is to use divide the second frame into a plurality of parts, and transmitting the plurality of parts of the second frame discontinuously when the second frame rate is lower than the first frame rate;
and the third command mode is to use different speed to transmit the image data of the second frame when the second frame rate is different from the first frame rate.

7 more elements

A control method of a processor, comprising:

transmitting image data of a first frame to an integrated circuit, wherein the first frame corresponds to a first frame rate;
determining a second frame rate of a second frame next to the first frame;
determining if a difference between the second frame rate and the first frame rate belongs to a large scale frame rate adjustment or a small scale frame rate adjustment;
if it is determined that the difference between the second frame rate and the first frame rate belongs to the large scale frame rate adjustment, using a first mode to transmit image data of the second frame;
and
if it is determined that the difference between the second frame rate and the first frame rate belongs to the small scale frame rate adjustment, using a second mode to transmit image data of the second frame;
wherein the first mode is a video mode, and the second mode is a command mode;
wherein the command mode is one of a first command mode, a second command mode and a third command mode, the first command mode is to use the same speed to transmit the image data of the first frame and the second frame when the second frame rate is different from the first frame rate;
the second command mode is to use divide the second frame into a plurality of parts, and transmitting the plurality of parts of the second frame discontinuously when the second frame rate is lower than the first frame rate;
and the third command mode is to use different speed to transmit the image data of the second frame when the second frame rate is different from the first frame rate;
and the video mode is one of a first video mode, a second video mode and a third video mode, the first video mode is to adjust a length of a horizontal porch of the image data of the second frame when the second frame rate is different from the first frame rate;
the second video mode is to adjust a length of a vertical front porch of the image data of the second frame when the second frame rate is different from the first frame rate;
and the third command mode is to use different speed to transmit the image data of the second frame when the second frame rate is different from the first frame rate.

10 more elements

A control method of a processor, comprising:

transmitting image data of a first frame to an integrated circuit, wherein the first frame corresponds to a first frame rate;
determining a second frame rate of a second frame next to the first frame;
determining if a difference between the second frame rate and the first frame rate belongs to a large scale frame rate adjustment or a small scale frame rate adjustment;
if it is determined that the difference between the second frame rate and the first frame rate belongs to the large scale frame rate adjustment, using a first mode to transmit image data of the second frame;
and
if it is determined that the difference between the second frame rate and the first frame rate belongs to the small scale frame rate adjustment, using a second mode to transmit image data of the second frame;
wherein the first mode is a command mode, and the second mode is a video mode;
wherein the command mode is one of a first command mode, a second command mode and a third command mode, the first command mode is to use the same speed to transmit the image data of the first frame and the second frame when the second frame rate is different from the first frame rate;
the second command mode is to use divide the second frame into a plurality of parts, and transmitting the plurality of parts of the second frame discontinuously when the second frame rate is lower than the first frame rate;
and the third command mode is to use different speed to transmit the image data of the second frame when the second frame rate is different from the first frame rate;
and the video mode is one of a first video mode, a second video mode and a third video mode, the first video mode is to adjust a length of a horizontal porch of the image data of the second frame when the second frame rate is different from the first frame rate;
the second video mode is to adjust a length of a vertical front porch of the image data of the second frame when the second frame rate is different from the first frame rate;
and the third command mode is to use different speed to transmit the image data of the second frame when the second frame rate is different from the first frame rate.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/153,892Filed 21 Jan 2021 · us provisional application
Priority: 21 Feb 2020
Published: US 2021/0266495 A126 Aug 2021
Granted: 27 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

G11B 27/031
Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers: electronic editing of digitised analogue…
H04N 7/013
By changing the field or frame frequency of the incoming video signal, e.g. frame rate converter: the incoming video signal comprising different…
G09G 5/005
Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto: adapting…
G09G 5/393
Control of the bit-mapped memory: arrangements for updating the contents of the bit-mapped memory