Abstract: An electronic device and a method generate a first model and a second model when the images presented by the electronic device are viewed by a user located at a reference location. The electronic device obtains an image of the user captured by a camera of the electronic device when the user views the images presented by the electronic device. The electronic device generates a third model according to the image of the user. The electronic device adjusts the images presented by the electronic device when the third model does not match the first model.

Abstract: A hands-free control method for an electronic device requires a display device, a storage device, and a camera in the device. The method includes capturing an infrared image of a user's eye and a direction of gaze of a user's eye being analyzed according to the captured infrared image to determine a focus of the eye on the display device. Movements of the focus on the display device according to a previous position and a current position of the focus of the eye can be analyzed. A control instruction is generated according to a relationship between control instructions and eye movements and voice instructions can be generated based on received voice command from the user. The display device is controlled to perform predetermined actions when the voice instruction matches with the control instruction.

Abstract: In a ringtone control method executed in an electronic device receiving a call, an image capturing device captures images of surroundings of the electronic device in the event of receiving a call. The absence or presence of a person in the surroundings of the electronic device is detected and, if a person is found, whether the person is moving towards or away from the electronic device is detected according to the images. If the person is moving towards the electronic device, a ringtone volume of the call is decreased. If the person is moving away from the electronic device, the ringtone volume of the call is increased.

Abstract: A mouse pad with a touch detection function includes a communication unit, a first ultrasonic unit, a second ultrasonic unit, and a processor including a detection module, a selection module, a calculating module, and a determining module, the detection module detects whether the first ultrasonic unit and second ultrasonic unit receive reflection waves, and determines that an object is touching the mouse pad when the first ultrasonic unit and second ultrasonic unit receive the reflection waves, the selection module selects a predetermined number of first reflection waves and second reflection waves, the calculating module establishes a rectangular coordinates system, and determines coordinate values of the first reflection points and second reflection points, the determining module determines the reflection points having the same coordinate value at a first predetermined interval, selects a reflection point from the determined reflection points as a detection point.

Abstract: A method for processing voice data of a user in a video by using an electronic device. A relationship between a lip feature of a user and word information is established, when a decibel value of the voice data of the user is less than a first predetermined value in condition that voice data of the video is the same as voice data of the user, one or more video segments in which the decibel value of the user is less than the first predetermined value is extracted. As responding to the relationship, word information of voice data of the user in the extracted video segment is accessed, and the electronic device transforms the word information to audible spoken words.

Abstract: A method for detecting an air pollutant includes feeding air into a device to detect a quantity of the air pollutant, determining whether the quantity of the air pollutant exceeds a threshold value, turning on a gyroscope and an accelerometer of the device when the quantity of the air pollutant exceeds the threshold value, obtaining positions and moving distances of the device from the gyroscope and the accelerometer, calculating a relationship between the positions and moving distances of the device and the quantity of the air pollutant, and displaying the relationship between the positions and moving distances of the device and the quantity of the air pollutant on a display.

Abstract: In a ringtone control method executed in an electronic device receiving a call, an image capturing device captures images of surroundings of the electronic device in the event of receiving a call. The absence or presence of a person in the surroundings of the electronic device is detected and, if a person is found, whether the person is moving towards or away from the electronic device is detected according to the images. If the person is moving towards the electronic device, a ringtone volume of the call is decreased. If the person is moving away from the electronic device, the ringtone volume of the call is increased.

Abstract: An electronic device and a method generate a first model and a second model when the images presented by the electronic device are viewed a user located at a reference location. The electronic device obtains an image of the user captured by a camera of the electronic device when the user views the images presented by the electronic device. The electronic device generates a third model according to the image of the user. The electronic device adjusts the images presented by the electronic device when the third model matches the first model.

Abstract: A portable electrical device includes a shell, a display device, a power management device, a touch button positioned on the shell, and a conductive substrate positioned inside the shell. The conductive substrate is spatially corresponding to the touch button and spaced apart a predetermined distance from the touch button. When a force is applied by a user's finger to push the touch button to touch the conductive substrate, the power management device provides a predetermined subtle alternating current to the user's finger to test a body fat percentage of the user and the display device displays the body fat percentage.