| Patent application number | Description | Published |
|---|
| 20080276037 | Method to Access Storage Device Through Universal Serial Bus - A method accessing a flash memory storage device through universal serial bus (USB) of the present invention includes a flash controller and a flash memory, wherein the method includes connecting the storage device to a USB interface of an electronic device; outputting a plurality of accessing instructions to the flash controller via the electronic device; deciding which data is needed to be temporarily saved in a cache memory and a priority of the accessing instructions according to the characteristic of the file system and the content of preceding instructions of the flash controller; and writing the data temporarily saved in the cache memory into the flash memory according to the priority of the flash controller. The objective of the method of the present invention is to enhance the operation efficiency of the storage device. | 11-06-2008 |
| 20080285625 | FREQUENCY SYNTHESIZER APPLIED TO FREQUENCY HOPPING SYSTEM - A frequency synthesizer applied to a frequency hopping system includes a voltage controlled oscillator (VCO), a phase lock loop (PLL) system, a second frequency divider, a first SSB mixer, a second SSB mixer, and a multiplexer. The VCO generates an oscillating frequency. The PLL system includes a first frequency divider and divides the oscillating frequency by 10 to generate a first dividing signal. The second frequency divider divides the oscillating frequency by 2 to generate a second dividing signal and further divides the second dividing signal by 2 to generate a third dividing signal. The first SSB mixer mixes frequencies of the second and third dividing signals to generate a first mixing signal. The second SSB mixer mixes frequencies of the first mixing signal and the first dividing signal to generate a second mixing signal. The Multiplexer determines to output the first mixing signal or the second mixing signal. | 11-20-2008 |
| 20090089349 | Angle Computation Method and Related Circuit - Computing an angle between a real part and an imaginary part of a complex number includes receiving complex number data; generating a first value, a second value and a determination result according to the complex number data; choosing a dividend and a divisor of a division operation from the first value and the second value for generating a division result according to magnitudes of the first value and the second value; performing table look-up for the division result to generate a table look-up result according to a preserved table; and adjusting the table look-up result for generating an angle corresponding to the complex number data according to the determination result. | 04-02-2009 |
| 20100124175 | Apparatus and method for adaptively calculating symbolic start position - An apparatus and a method for adaptively calculating a start position of a series of symbols are provided. The method is applied to a frame synchronization circuit that implements the apparatus for calculating the symbolic start position of a packet-switching communication system. Even under the situations such as higher frequency offset, the frequency offset value approaching zero or unstable frequency offset, the frame synchronization circuit using the claimed method still can estimate the symbolic start position. The preferred method includes a first step of retrieving the signals in a unit of packets, and calculating their delay correlation value. Next, a control circuit is incorporated to retrieve multiple groups of symbols, and to set the parameters of the systems as a basis for identifying the system's property. After that, it's to estimate the symbolic start position. | 05-20-2010 |
