Abstract: A body biasing device for an amplifier which has a P-type differential pair and outputs an output signal at an output node according to a differential input signal pair is disclosed. The body biasing device includes a detection unit coupled to the operational amplifier for detecting a detected voltage related to the differential input signals and accordingly outputting a control signal; and a selection unit coupled to the detection unit and the operational amplifier for outputting a body bias to the P-type differential pair according to the control signal.

Abstract: The present invention discloses a dynamic power control method utilized in an amplifier. The dynamic power control method includes detecting an absolute difference between a positive supply voltage of the amplifier and an output voltage of the amplifier, to acquire a positive voltage difference; detecting an absolute difference between a negative supply voltage of the amplifier and the output voltage of the amplifier, to acquire a negative voltage difference; and adjusting the positive supply voltage and the negative supply voltage according to the positive voltage difference, the negative voltage difference and a threshold.

Abstract: A pop-free single-ended output class-D amplifier includes: an input signal generator for generating an input signal; a power supply for supplying input power; a reference voltage generator for generating a reference voltage; a gain-adjustable stage for generating an amplified signal according to the reference voltage and adjusting a gain of the single-ended output class-D amplifier; a pulse width modulation module for outputting a pulse width modulation signal according to the reference voltage, the amplified signal, and the input power; a low-pass filter for low-pass filtering the pulse width modulation signal to generate an output voltage; and a logic controller for generating at least one control signal to control the reference voltage generator, the gain-adjustable stage, and the pulse width modulation module according to the input power, the reference voltage, and the pulse width modulation signal.

Abstract: The present invention discloses a dynamic power control method utilized in an amplifier. The dynamic power control method includes detecting an absolute difference between a positive supply voltage of the amplifier and an output voltage of the amplifier, to acquire a positive voltage difference; detecting an absolute difference between a negative supply voltage of the amplifier and the output voltage of the amplifier, to acquire a negative voltage difference; and adjusting the positive supply voltage and the negative supply voltage according to the positive voltage difference, the negative voltage difference and a threshold.

Abstract: A body biasing device for an amplifier which has a P-type differential pair and outputs an output signal at an output node according to a differential input signal pair is disclosed. The body biasing device includes a detection unit coupled to the operational amplifier for detecting a detected voltage related to the differential input signals and accordingly outputting a control signal; and a selection unit coupled to the detection unit and the operational amplifier for outputting a body bias to the P-type differential pair according to the control signal.

Abstract: Systems and methods to enhance enhancing a service for a user. The system collecting documents viewed or words posted by a user. Determining a list of topic words for the user based on words in the documents viewed or words posted. Identifying a list of topic words associated with the user, based on words in the one or more documents and the words posted by the user. Assigning each of the topic words to at least one of a plurality of topics based on correlations between the topic words of the user and topic words from other users. Estimating a set of interest topics for the user based on the topics assigned to the topic words of the user.

Abstract: A dispenser for a chemical-mechanical polishing (CMP) apparatus, includes a delivery arm disposed over a polishing pad of a CMP apparatus, at least a slurry delivery groove formed in the delivery arm and extending along a length of the delivery arm, and a plurality of first openings connected to the slurry delivery groove.

Abstract: The present invention discloses a security system. The security system comprises an image capturing device, a network communication device coupled to a user terminal via Internet. The present invention includes a network communication device having one or more external device connecting ports and at least one network port, an image capturing device is coupled to the USB port of the network communication device or builds in the network communication device. The image capturing device is controller by the network communication device to detect the environment image. The detected result will be informed to a user terminal or be stored in a memory. The image capturing device is controlled by the network communication device, and catches a reference image, then the network communication device catches subsequent image for comparing with the reference image.

Abstract: A power management system and method for a wireless communication device generates an average desired transmit power signal based on at least one of a received signal strength indicator signal and a power control instruction signal from a base station. A power supply level adjustment signal is generated based on the data parameters of an outgoing data stream and at least one environmental information signal. A combination of the power supply level adjustment signal and the average desired transmit power or a gain control signal and an altered version of the power supply level adjustment signal is used to generate a variable power supply signal that is provided to an output amplifier block for sufficiently generating outgoing wireless device radio signals while reducing power loss in the output amplifier block.

Abstract: A playing grid includes cells for holding objects of different types, and a cursor that when moved exchanges positions in the grid with an adjacent object. The cursor is prevented from leaving the bounds of the grid. Horizontally or vertically lined-up matchable objects of the same type are deleted. Objects are moved in the grid to cells adjacent to and below unless occupied by other objects. A new row of objects is created below the bottommost row of the playing grid, and shifted up into the grid displacing other objects in the grid up. In an expert mode, falling objects are created at the top of the grid, and objects can be transformed into other objects. In a multiplayer mode, objects can be exchanged and deleted from two playing grids depending on player performance.

Abstract: A multi-functional memory chip connector includes an insulation frame having a memory chip insertion portion, a plurality of connecting slots on an inside surface of the memory chip insertion portion for electrically coupling a variety of memory chips, and a plurality of connector terminals extending from the connecting slots and distributed to three sides of the insulation frame for electrically coupling with a circuit board. The connector also includes a plurality of card insertion slots for receiving a plurality of memory chips with various connection specifications, and an upper lid for mounting on the top of the insulation frame.

Abstract: A network interface card (NIC) frame contains a plastic frame, an upper cover, two metal plates and two lateral metal bars. A PC board is mounted into the plastic frame first and then the two metal plates are covered on the top and bottom of the PC board respectively. Afterwards, the lateral metal bar is arranged on the groove of the two lateral sides of the plastic frame and then the fingers on the lateral metal bar are inserted into the corresponding buckle holes on the fasten teeth of the metal plates respectively. The NIC frame can be taken apart and reused repetitively for the purpose of adjustment or repairing the PC board inside.

Abstract: A mug consists of an outer body made of plastics and an inner body made of a metal. The outer body has a sloped circumferential wall defining a hollow cavity. A bottom plate is fixed with a bottom end of the outer body, having a plurality of seats spaced apart on an upper surface for supporting the bottom of the inner body. An anti-leak gasket engages with an annular groove provided around an upper opening of the inner body, which has its upper edge closely contacting with an annular groove of the outer body after placed in the outer body supported by the seats on the bottom plate securely.

Abstract: A cleaning tissue holder for hanging on a wall with nails passing through hanging holes, and having a clamping portion for receiving a pack of cleaning tissues, an upper fixing wall having a horizontal portion and a curved forward portion extending from the horizontal portion on the clamping portion, a bottom base at a bottom of the clamping portion, the bottom base having an elastic sloping-down push plate in an intermediate portion, a push plate being manually pushed down to let a pack of cleaning tissues move in the clamping portion, whereby releasing the push plate clamps the pack, with the top of the push plate firmly and elastically pushing up the bottom of the pack.

Abstract: A cap locking device for a water bottle comprising a bottle cap threadably closing an inner bottle, a push button and a nipple pusher, the bottle cap shaped like a shell head having a diametric opening, a tubular post in the opening for a nipple fixed on top of a drinking tube extending vertically in the inner bottle to fit therein, a push button pivotally fitted in one side portion of the opening and the liftable nipple pusher pivotally fitted in another side portion of the opening, the liftable nipple pusher pushed down to close the opening or raised up to open the opening by pushing the push button for the nipple exposed for sucking the content of the inner bottle contained in an outer bottle.