Abstract: An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.

Abstract: A swinging apparatus comprising an energy provider and a swinging mechanism disposed thereon. By means of adjusting the size and shape of the swinging mechanism and adjusting a distance between the swinging mechanism and the energy provider so as to control the ratio of the distance between the swinging mechanism and the energy provider to a characteristic value corresponding to the swing mechanism in a range between 4 and 0.25, the swinging frequency of the swinging mechanism may be adjusted automatically to comply with the variation of the motion frequency of the energy provider. The present invention further provides an energy harvester to work with the swinging apparatus and a coil to generate an induced current for power generation during the swing of the swing mechanism. In the present invention, the natural frequency of the swing mechanism may be adjusted according to the rotational velocity of the energy provider.

Abstract: A system and method of protecting security of a mobile electronic includes capturing one or more images by a camera of the mobile electronic device and storing the one or more images into a memory system of the mobile electronic device. The system and method further includes converting each of the one or more captured images into an intensity image in response to the determination that the number of the one or more captured images are equal to a predetermined number. Furthermore, the system and method includes comparing each intensity image with the user-predetermined image, and displaying unlock success or failure information according to the comparison.

Abstract: An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.

Abstract: An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.

Abstract: A positioning apparatus is disclosed, which comprises: a position detection module, including an inertial sensor, a magnetometer, and a global positioning device, being used for detection a movement of an object and thus generating a positioning signal accordingly; wherein the positioning signal is transmitted to a control unit and then to a signal processing device where it is being processed and converted into an angular/displacement signal to be transmitted to a monitoring device by way of a signal transmission device for enabling the monitoring device to track the movement of the object. In a preferred embodiment, both of the monitoring device and the signal transmission device are respectively being configured with a displaying unit for displaying the movement of the object. In addition, the positioning apparatus further comprises an identity module, for providing a unique identification code to the object to be used for identifying the same.

Abstract: A position detecting system and a method of the same are disclosed according to the present invention as follows: an inertia sensing module and an obstacle sensing module are adapted to detect a displacement signal of a cleansing apparatus and a distance signal of a distance between the cleansing apparatus and an obstacle respectively; and then a signal processing module is adapted to convert the displacement signal and the distance signal into an actual displacement path and an obstacle distance respectively, and then compare the actual displacement path and the obstacle distance with a preset path respectively to determine if the cleansing apparatus is traveling at the same place over again, or if the cleansing apparatus is going to hit the obstacle, and then the signal processing module will adjust a traveling path based on comparison results; and a control module is adapted to control traveling of the cleansing apparatus based on the adjusted traveling path.

Abstract: An MPEG-4 system with error concealment is provided for video service under the network with packet loss. The MPEG-4 system includes an encoder and a decoder. The encoder uses an intra-refreshment technique is used to make coded bitstream more robust against noise in order to stop error propagation. The rate-distortion optimization criterion is also introduced to adaptively update in synchronization with intra-coded blocks adaptively based on the true network condition with minimal overhead. The Lagrange multiplier is modified to achieve the best rate-distortion balance. In addition, a decoder loop is used in the encoder and is synchronized with the true decoder to achieve the best performance and avoid mismatch with the decoder used in the MPEG-4 system. The decoder is able to achieve resilient decoding from any kind of noise and enhance the reconstructed image quality with spatial and temporal hybrid concealment method. The result shows that a 3.65-9.