Systems and methods for focusing on objects to capture images thereof
First Claim
1. A method for focusing in an electronic device capable of capturing images, the method comprising:
- obtaining a travel time of an ultrasonic signal travelling to and from an object;
obtaining either or both of location/position information and environment information of the electronic device;
determining a local sound speed according to either or both of the location/position information and the environment information of the electronic device;
determining an object distance between the electronic device and the object according to the local sound speed and the travel time; and
focusing on the object according to the object distance.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for focusing on an object to capture an image of that object is provided. The method includes obtaining the travel time between the point in time that an ultrasonic signal is sent and the point in time at which the reflected signal is received. The method also includes obtaining environment information of the electronic device based on location/position information. The method further includes determining local sound speed according to environment information and determining the distance to an object using the local sound speed and the travel time. In addition, the method can include focusing on the object according to the object distance.
-
Citations
22 Claims
-
1. A method for focusing in an electronic device capable of capturing images, the method comprising:
-
obtaining a travel time of an ultrasonic signal travelling to and from an object; obtaining either or both of location/position information and environment information of the electronic device; determining a local sound speed according to either or both of the location/position information and the environment information of the electronic device; determining an object distance between the electronic device and the object according to the local sound speed and the travel time; and focusing on the object according to the object distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. An electronic device, comprising:
-
a sound speed analyzer configured to obtain a local sound speed according to either or both of location/position information and environment information of the electronic device; and an object distance detecting module comprising a transmitter configured to transmit an ultrasonic signal and a receiver configured to receive the ultrasonic signal, wherein the object distance detecting module is configured to obtain a travel time of the ultrasonic signal travelling to and from an object, detect an object distance between the electronic device and the object according to the local sound speed and the travel time of the ultrasonic signal, and provide the object distance for focusing on the object according to the object distance. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. An electronic device, comprising:
-
a time analyzer, configured to obtain a travel time of an ultrasonic signal travelling to and from an object; a positioning unit, configured to receive location/position information of the electronic device; a sound speed converter, configured to determine a local sound speed according to either or both of the location/position information and environment information of the electronic device; and a distance analyzer, configured to determine an object distance between the electronic device and the object according to the local sound speed and the travel time, and provide the object distance for focusing on the object according to the object distance. - View Dependent Claims (22)
-
Specification