Abstract:
An integrated circuit memory is disclosed which has its primary memory array arranged into blocks and which has redundant columns, each of which can replace a column in any one of the blocks. The redundant columns are selected by way of a redundant column decoder, associated with each column. A plurality of redundant sense amplifiers are each associated with selected redundant columns. Each of the redundant column decoders includes a set of address fuses for storing the column address responsive to which its associated redundant column is to be selected, and which are in series with pass gates which are turned on when redundancy is enabled, and turned off otherwise. This arrangement of address fuses and pass gates reduces and balances the loading of the decoder on the address lines, may be implemented with fewer transistors and thus in reduced chip area relative to conventional decoders, and also reduces the propagation delay through the decoder. The coupling of each redundant sense amplifier is controlled by a redundant multiplexer associated with each of the input/output terminals. Each redundant multiplexer receives the redundant column select signals from each redundant column decoder corresponding thereto, and includes fuses which indicate if its input/output terminal is to be placed in communication with its associated sense amplifier upon selection of a redundant column.
Abstract:
PROBLEM TO BE SOLVED: To provide a sense amplifier of which operation speed is increased. SOLUTION: A sense amplifier used for a memory device is provided. The sense amplifier has a pair of cross-coupled inverters, and each inverter has at least two transistors. Further, the sense amplifier can have a first capacitor coupled to a first input/output terminal and a second capacitor coupled to a second input/output terminal. Variation in voltage difference appearing by crossing the input/output terminal boostraps the cross-coupled inverters, and facilitates activation and non-activation of a transistor in the cross coupled inverters. Therefore, a response time of the sense amplifier is decreased. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an improved technique for scaling images on a video display. SOLUTION: A video data stream is processed into video data, which is displayed on a video display at a predetermined aspect ratio. A user manipulable controller, such as a joystick, is operative with a graphics processor unit for scaling images on the video display. In this case, video source values of pixel width and height to be displayed are obtained and the smallest integer increment on the x/y axis that will maintain the desired aspect ratio is determined by using a greatest common denominator to reduce the ratio to the lowest integer. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide an improved technology for driving a voice coil motor (VCM) load in a disc drive system, or the like. SOLUTION: A VCM power driver has an input end receiving an external supply voltage VDD. A voltage mode driver is coupled with a power supply voltage and generates a drive signal to a load. A system processor generates a command indicative of a desired programmed voltage output from the voltage mode driver. A comparator compares the VDD with a reference voltage to generate an error signal. A combination mechanism generates a corrected command using the error signal. The corrected command is coupled with the voltage mode driver which generates a voltage output based on the corrected command.