Abstract: A method for detecting distance in a smart portable device includes acquiring an image of a target object, calculating a length of a side of the target object in the image, acquiring a predicted length of the side of the target object, and determining a distance between the smart portable device and the target object according to the length of the side of the target object in the image and the predicted length.

Abstract: An electronic device for recognizing a position of a target object in a smart portable device includes a distance detection device for determining a distance between the smart portable device and the target object according to an image of the target object, a direction determination unit for acquiring a direction from the smart portable device to the target object, a positioning unit for acquiring coordinate information of a current position of the smart portable device, and a determination unit for determining the position of the target object according to the distance between the smart portable device and the target object, the direction from the smart portable device to the target object and the coordinate information of the current position of the smart portable device.

Abstract: The present invention provides a method for exchanging information in a voice communication system, which includes a first communication device establishing a communication connection with a second communication device, and the first communication device exchanging digital data with the second communication device for achieving a specific function in a specific interval; wherein the specific interval is an interval that the first communication device does not exchange voice signals with the second communication device.

Abstract: A method for outputting images adopted by an electronic device having a display unit and at least one connection port is provided. The method comprises displaying options of available external devices, wherein each of the options of the available external devices respectively corresponds to an external display device connected to the electronic device through the corresponding connection port. A selection signal is received to select one of the options of the available external devices. An image of one of the image frames displayed on the display unit is outputted to the external display device corresponding to the selected option of the available external device. When a first task corresponding to the output image is continuously executed either in the background or in the foreground, the image is continuously outputted to the selected external display device. The image outputted from the electronic device is displayed on the external display device.

Abstract: A navigation method of tracking a dynamic target for navigation is disclosed in the present invention. The dynamic target is a portable electronic device having network function and GPS function. The navigation method includes connecting to internet, executing register of a global positioning system and setting a network group for communicating with the dynamic target, setting coordinate information outputted from the dynamic target to be a navigating target, and executing navigation by the navigating target and the global positioning system.

Abstract: The present invention provides a method for exchanging information in a voice communication system, which includes a first communication device establishing a communication connection with a second communication device, and the first communication device exchanging digital data with the second communication device for achieving a specific function in a specific interval; wherein the specific interval is an interval that the first communication device does not exchange voice signals with the second communication device.

Abstract: A method for detecting distance in a smart portable device includes acquiring an image of a target object, calculating a length of a side of the target object in the image, acquiring a predicted length of the side of the target object, and determining a distance between the smart portable device and the target object according to the length of the side of the target object in the image and the predicted length.