Abstract: A method and a device for reducing the waste of the central process unit (CPU) resource during the filling process of a vector graphic, and the method includes: parsing the vector graphic to obtain a series of polygons; mapping the polygons into a new drawing coordinate whose unit is 1/2n pixel using a transform parameter and a transform matrix, while updating an original drawing window into the new drawing coordinate at the same time, wherein the transform parameter is A, A=2n/K, n is a shift parameter, the unit of the vertex coordinate of the polygon is 1/K pixel, and n, K are valued for natural numbers; obtaining the portions of the polygons located in the new drawing window in the new drawing coordinate; transforming the portions of the polygons located in the new drawing window in the new drawing coordinate into a group of scan segments; and shifting the original code of the coordinate of the scan segments to right by n bit, and rendering the pixels of the shifted scan segments.

Abstract: A method and apparatus for charging a battery is provided. The apparatus includes: a constant current circuit, a constant voltage circuit and a control circuit. The control circuit is adapted to control the constant current circuit to perform constant current charging to the battery; after a battery voltage during the constant current charging reaches a preset charging limited voltage, control the constant voltage circuit to perform constant voltage charging to the battery; after a charging current during the constant voltage charging becomes smaller than or equal to a predetermined threshold, control the battery to be charged by pulse charging until an open circuit voltage of the battery is larger than or equal to a preset voltage threshold.

Abstract: Disclosed are a portable multimedia device and an operating method therefor. The portable multimedia device comprises a Flash decoder and a system function decoder.

Abstract: A Not and Flash (Nandflash) controller and a data transmission method with the Nandflash controller are provided. The Nandflash controller includes a parameter configuration device, configured to receive an operation command from outside, wherein the operation command indicates a current transmission type, number of times needed for transmitting data, size of which is same as that of a buffer in the Nandflash, and command parameters used by each execution; a transmission controlling device, configured to transmit data of a precoded size to/from the Nandflash during each data transmission according to the current transmission type and the command parameters used by this execution the number of times indicated by the operation command. The controller and method advantageously avoid configuring a command for the next operation each time the data of the precoded size is transmitted, save time and clock resources, and greatly improves transmission efficiency.

Abstract: A USB device and a detection method therefor. It can be detected whether the USB device is a master device or a slave device without the use of an ID pin, thereby saving the pin resources of the USB device.

Abstract: Provided are a resistive touch panel detection method and apparatus. A resistance variance ratio of a Y plane relative to an X plane is calculated based on voltage detections before touching and after a two-point touch occurs; and then the inclination angle is calculated based on corresponding relationship between the inclination angle and the resistance variance ratio. To obtain a distance between the two points, the present invention the resistance variance ratio and a first ratio of a resistance variance of any one of the X plane and the Y plane relative to a total resistance of the any one plane are calculated; then a second ratio of an equivalent contact resistance at a midpoint relative to the total resistance is calculated; and the distance is calculated based on the resistance variance ratio, the first ratio, the second ratio, and a correlated relationship of the distance between the two points.

Abstract: A playing method of digital right managing multimedia is disclosed, in which the files of DRM multimedia to be played take a Page as a playing basic unit, when the operation of fast-forward/fast-reverse is triggered, the method comprises: determining time of fast-forward/fast-reverse; determining number of Pages of fast-forward/fast-reverse based on the time of fast-forward/fast-reverse; determining Page of target playing position based on the number of Pages of fast-forward/fast-reverse; calculating key stream of the Page of the target playing position based on prestored key data of the first Page; decrypting ciphertext of the Page of the target playing position based on the calculated key stream of the Page of the target playing position; and decoding the decrypted Page of the target playing position and playing the decrypted Page of the target playing position. A playing device is also provided.

Abstract: A USB device and a detection method therefor. It can be detected whether the USB device is a master device or a slave device without the use of an ID pin, thereby saving the pin resources of the USB device.

Abstract: The present invention is adapted for the field of power supply and provides a battery charging device and a method for controlling charging thereof, including: a charging circuit which has a charging current setting terminal for charging the battery according to charging current of the charging current setting terminal; a charging current control circuit which is connected with the charging current setting terminal and adjusts the charging current gradually according to equivalent resistance in the charging current control circuit; a general register circuit which is connected to the charging current control circuit and to control the equivalent resistance by setting value of a general register. In the present invention, a plurality of switching tubes and resistances are integrated into the charging current control circuit.

Abstract: An integrated circuit, wherein a voltage-adjustable power supply circuit (42) receives a first power supply control signal (6) output by a programming power supply control circuit (41), outputs a first voltage signal to a efuse circuit (44) by a power source switching circuit (43) and outputs the first voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives the first voltage signal and a first programming control signal (5) output by the programming power supply control circuit (41) and burns out a corresponding efuse therein; or the voltage adjustable power supply circuit (42) receives a second power supply control signal (6) output by the programming power supply control circuit (41) and outputs a second voltage signal to other functional circuits (45) of the integrated circuit, and the efuse circuit (44) receives a second programming control signal (5) output by the programming power supply control circuit (41) and ensures a corresponding efuse therei

Abstract: Provided is an audio data encoding method and device for use in Ogg/Vorbis encoding in portable multimedia players. The method comprises: receiving audio data requiring encoding (300); performing MDCT to the audio data (310); calculating the masking curve on the basis of the MDCT results (320); calculating and generating the base curve on the basis of the masking curve by means of the piecewise linear method (330); calculating and generating the spectral residual on the basis of the masking curve and the base curve (340); performing channel coupling to the spectral residual (350); performing vector quantization calculations on the post-channel coupling results (360); encoding, according to an assigned sampling rate and a bit rate, the data obtained by means of vector quantization calculation, and then obtaining encoded audio data (370).

Abstract: An IC having a scan chain and a testing method for a chip, comprising a first interface group, a second interface group and a scan data selector. The first interface group and the second interface group each comprise at least two input/output (I/O) interfaces which can be packaged as external pins of the IC. The I/O interfaces of the first interface group are connected to input terminals of the scan data selector in one-to-one correspondence, and an output terminal of the scan data selector is connected to a scan data input terminal of the scan chain. A scan data output terminal of the scan chain is connected to the I/O interfaces of the second interface group.

Abstract: A method for performing wear leveling in a memory, and an apparatus corresponding to the method, is provided. The method includes: dividing the lifecycle of the memory which includes more than one physical blocks into at least one sampling interval; for each sampling interval, getting the first physical block by taking statistics of the degree of the wear leveling of each physical block in the memory in the current sampling interval; getting the second physical block by taking statistics of the updating times of each logical address in the current sampling interval; exchanging the logical addresses and data of the first physical block and the second physical block.

Abstract: A method for using pins in different mode during different time is provided. The method is able to make at least one pin of a SOC be used in a first interface mode or a second interface mode during different time; wherein the SOC comprises a first interface circuit, a first pin, a second interface circuit, and a second pin; the first interface circuit comprises a first bidirectional PAD unit, a first signal interface unit of the first interface mode and a interface unit of the second interface mode; the second interface circuit comprises a second bidirectional PAD unit, a second signal interface unit of the first interface mode. The method comprises: selecting the output of the first signal interface unit or the output of the interface unit of the second interface mode to be connected with the first pin through the first bidirectional PAD unit during different time.

Abstract: An IC having a scan chain and a testing method for a chip, comprising a first interface group, a second interface group and a scan data selector. The first interface group and the second interface group each comprise at least two input/output (I/O) interfaces which can be packaged as external pins of the IC. The I/O interfaces of the first interface group are connected to input terminals of the scan data selector in one-to-one correspondence, and an output terminal of the scan data selector is connected to a scan data input terminal of the scan chain. A scan data output terminal of the scan chain is connected to the I/O interfaces of the second interface group.

Abstract: A method for adjusting a reference voltage is provided, including: decoding a default code configured in a reference voltage register in a chip to obtain an actual reference voltage; comparing the actual reference voltage with a benchmark value to obtain a deviation value between the two; configuring an adjustment code according to the deviation value; and, burning the adjustment code into a nonvolatile storage medium. The present invention also discloses an apparatus for adjusting a reference voltage. Thus, adjustment on the reference voltage of the chip is standardized and costs of the chip's application schemes are saved. A method and apparatus for obtaining a reference voltage are also provided, and thus stability of the circuit's working is improved and costs of the chip's applications are decreased.

Abstract: A method and apparatus for charging a battery is provided. The apparatus includes: a constant current circuit, a constant voltage circuit and a control circuit. The control circuit is adapted to control the constant current circuit to perform constant current charging to the battery; after a battery voltage during the constant current charging reaches a preset charging limited voltage, control the constant voltage circuit to perform constant voltage charging to the battery; after a charging current during the constant voltage charging becomes smaller than or equal to a predetermined threshold, control the battery to be charged by pulse charging until an open circuit voltage of the battery is larger than or equal to a preset voltage threshold.

Abstract: A Not and Flash (Nandflash) controller and a data transmission method with the Nandflash controller are provided. The Nandflash controller includes a parameter configuration device, configured to receive an operation command from outside, wherein the operation command indicates a current transmission type, execution times needed for transmitting data of size of a buffer in the Nandflash, and command parameters used by each execution; a transmission controlling device, configured to transmit data of a precoded size with the Nandflash during each data transmission according to the current transmission type and the command parameters used by this execution, until completing the execution times. The controller and method advantageously avoid configuring a command for the next operation each time the data of the precoded size is transmitted, save time and clock resources, and greatly improves transmission efficiency.

Abstract: A signal output apparatus, a charge pump, a voltage doubler and a method for outputting a current are provided. The interior circuit of a chip is used to generate an oscillation signal with a swing of 0 to 2×VIN, which drives a charge-pump type voltage doubler using large capacitors outside the chip to output a large current.

Abstract: A human voice distinguishing method and device are provided. The method involves: taking every n sampling points of the current frame of audio signals as one subsection, wherein n is a positive integer, judging whether two adjacent subsections have transition relative to a distinguishing threshold, wherein the sliding maximum absolute value of the two adjacent subsections is more and less than the distinguishing threshold respectively, if so, then determining the current frame to be human voice, where the sliding maximum absolute value of the subsection is obtained by the following method: taking the maximum value of absolute intensity of every sampling point in this subsection as the initial maximum absolute value of this subsection, and taking the maximum value of the initial maximum absolute value of this subsection and m subsections following this subsection as the sliding maximum absolute value of this subsection, wherein m is a positive integer.