Method and device for controlling screen rotation

Patent metadata

Field	Value
Publication number	US-9858648-B2
Application number	US-201514932696-A
Country	US
Kind code	B2
Filing date	Nov 4, 2015
Priority date	May 17, 2013
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A method for controlling screen rotation for use in a mobile terminal is provided. The method includes: when the mobile terminal enters a full-screen mode, locking a screen orientation of the mobile terminal, and acquiring an initial posture of the mobile terminal; monitoring a real-time posture of the mobile terminal in real time; and determining a screen rotation direction by comparing the real-time posture with the initial posture.

First claim

What is claimed is:

1. A method for controlling screen rotation for use in a mobile terminal, comprising:
when the mobile terminal enters a full-screen mode, locking a screen orientation of the mobile terminal, and acquiring a posture of the mobile terminal at the time of entering the full-screen mode as an initial posture for determining the screen rotation in the full-screen mode;
monitoring real-time posture of the mobile terminal in real time;
each time when the real-time posture changes in the full-screen mode, determining a screen rotation direction by comparing the real-time posture with the initial posture acquired when the mobile terminal enters the full-screen mode; and
rotating the screen orientation based on the determined screen rotation direction,
wherein:
the initial posture and the real-time posture of the mobile terminal each correspond to a gravitational acceleration of the mobile terminal, the gravitational acceleration including a component in an X-direction and a component in a Y-direction, the X-direction being a horizontal rightward direction along the mobile terminal and the Y-direction being an upright direction along the mobile terminal;
the acquiring of the posture of the mobile terminal at the time of entering the full-screen mode as an initial posture for determining the screen rotation in the full-screen mode includes:
acquiring and recording the X-direction component and the Y-direction component of a gravitational acceleration of the mobile terminal when the mobile terminal enters the full-screen mode, and
determining the initial posture of the mobile terminal for determining the screen rotation in the full-screen mode according to the X-direction component and the Y-direction component of the gravitational acceleration acquired when the mobile terminal enters the full-screen mode;
the monitoring of the real-time posture of the mobile terminal in real time includes:
monitoring the X-direction component and the Y-direction component of a real-time gravitational acceleration of the mobile terminal in real time; and
determining the real-time posture of the mobile terminal according to the X-direction component and the Y-direction component of the real-time gravitational acceleration; and
the determining of the screen rotation direction by comparing the real-time posture with the initial posture includes:
determining a correction value for a screen-orientation identifier according to the initial posture of the mobile terminal, wherein the screen-orientation identifier is configured to identify a screen orientation of the mobile terminal as one of an upright portrait orientation, a left landscape orientation, a reverse portrait orientation, and a right landscape orientation.

2. The method according to claim 1 , wherein the determining of the screen rotation direction by comparing the real-time posture with the initial posture comprises:
determining a real-time screen-orientation identifier of the mobile terminal according to the real-time posture;
correcting the real-time screen-orientation identifier of the mobile terminal according to the correction value, to obtain a corrected real-time screen-orientation identifier; and
when the corrected real-time screen-orientation identifier is different from the screen-orientation identifier corresponding to the initial posture of the mobile terminal, performing the rotating according to a screen orientation identified by the corrected real-time screen-orientation identifier.

3. A device for controlling screen rotation, comprising:
a processor; and
a memory for storing instructions executable by the processor;
wherein the processor is configured to:
when the device enters a full-screen mode, lock a screen orientation of the device, and acquire an initial posture of the device;
monitor real-time posture of the device in real time; and
each time when the real-time posture changes in the full-screen mode, determine a screen rotation direction by comparing the real-time posture with the initial posture acquired when the mobile terminal enters the full-screen mode; and
rotate the screen orientation based on the determined screen rotation direction,
wherein:
the initial posture and the real-time posture of the mobile terminal each correspond to a gravitational acceleration of the mobile terminal, the gravitational acceleration including a component in an X-direction and a component in a Y-direction, the X-direction being a horizontal rightward direction along the mobile terminal and the Y-direction being an upright direction along the mobile terminal;
in acquiring the initial posture of the mobile terminal, the processor is further configured to:
acquire and recording the X-direction component and the Y-direction component of a gravitational acceleration of the mobile terminal when the mobile terminal enters the full-screen mode, and
determine the initial posture of the mobile terminal according to the X-direction component and the Y-direction component of the gravitational acceleration acquired when the mobile terminal enters the full-screen mode;
in monitoring the real-time posture of the mobile terminal in real time, the processor is further configured to:
monitor the X-direction component and the Y-direction component of a real-time gravitational acceleration of the mobile terminal in real time; and
determine the real-time posture of the mobile terminal according to the X-direction component and the Y-direction component of the real-time gravitational acceleration; and
in determining the screen rotation direction by comparing the real-time posture with the initial posture, the processor is further configured to:
determine a correction value for a screen-orientation identifier according to the initial posture of the mobile terminal, wherein the screen-orientation identifier is configured to identify a screen orientation of the mobile terminal as one of an upright portrait orientation, a left landscape orientation, a reverse portrait orientation, and a right landscape orientation.

4. The device according to claim 3 , wherein the processor is further configured to:
determine a real-time screen-orientation identifier of the device according to the real-time posture;
correct the real-time screen-orientation identifier of the device according to the correction value, to obtain a corrected real-time screen-orientation identifier; and
when the corrected real-time screen-orientation identifier is different from the screen-orientation identifier corresponding to the initial posture of the device, performing the rotating according to a screen orientation identified by the corrected real-time screen-orientation identifier.

5. A non-transitory computer-readable storage medium storing instructions that, when executed by one or more processors of a mobile terminal, cause the mobile terminal to perform a method for controlling screen rotation, the method comprising:
when the mobile terminal enters a full-screen mode, locking a screen orientation of the mobile terminal, and acquiring an initial posture of the mobile terminal;
monitoring real-time posture of the mobile terminal in real time; and
each time when the real-time posture changes in the full-screen mode, determining a screen rotation direction by comparing the real-time posture with the initial posture acquired when the mobile terminal enters the full-screen mode; and
rotating the screen orientation based on the determined screen rotation direction,
wherein:
the initial posture and the real-time posture of the mobile terminal each correspond to a gravitational acceleration of the mobile terminal, the gravitational acceleration including a component in an X-direction and a component in a Y-direction, the X-direction being a horizontal rightward direction along

Assignees

• Xiaomi Inc

Inventors

• Li Shen
• Jin Fan
• Zhang Yuwen

Classifications

• G06F1/1626

  with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs] · CPC title

• G06F3/017

  Gesture based interaction, e.g. based on a set of recognized hand gestures (interaction based on gestures traced on a digitiser G06F3/04883) · CPC title

• G06T3/60 Primary

  Rotation of whole images or parts thereof · CPC title

• G06F3/0487 Primary

  using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser · CPC title

• G06F1/1694

  the I/O peripheral being a single or a set of motion sensors for pointer control or gesture input obtained by sensing movements of the portable computer · CPC title