Abstract: A dynamic sense current supply circuit and an associated method for rapidly characterizing a resistive memory array is disclosed. In one embodiment, the disclosed circuit comprises a first and second dynamically programmable current mirror sub-circuit. Responsive to a bank of control signals, each dynamically programmable current mirror sub-circuit provides a dynamically adjustable current scaling factor. These scaling factors are used to scale a supplied reference current to generate a plurality of sense currents which can be used within a plurality of read operations on a resistive memory array. A digital circuit is also provided to sense and store the result of each read operation.

Abstract: A dynamic sense current supply circuit and an associated method for rapidly characterizing a resistive memory array is disclosed. In one embodiment, the disclosed circuit comprises a first and second dynamically programmable current mirror sub-circuit. Responsive to a bank of control signals, each dynamically programmable current mirror sub-circuit provides a dynamically adjustable current scaling factor. These scaling factors are used to scale a supplied reference current to generate a plurality of sense currents which can be used within a plurality of read operations on a resistive memory array. A digital circuit is also provided to sense and store the result of each read operation.

Abstract: A display unit is disclosed which includes a first viewing side, a second viewing side and an illuminated price display on each of the first and second viewing sides. Each illuminated price display is formed with a plurality of digit fields. Each digit field on the first viewing side has a corresponding digit on the second viewing side, thereby forming digit field pairs which display congruous information. The display unit includes a remote control receiver which is responsive to a remote control transmitter for remotely changing the information displayed on one or more display units.

Abstract: A method for detecting a fine frequency deviation generated in a transmission line such as a general public telephone switching network. The method includes the steps of transmitting test signals to a transmission channel to be tested, receiving the test signals from the transmission channel, detecting a basic period from the received test signals, and determining a measure period on the basis of the detected basic period, performing a normalization by use of the basic period determined, extracting values of signals to be calculated, namely, object signals from those of the basic and measure periods, calculating respective absolute values of the object signals, averaging the calculated absolute values, and thereby calculating an absolute value of frequency deviation and determining a sign or direction of the frequency deviation, and determining a final frequency deviation on the basis of the sign determined from the absolute value of frequency deviation.

Abstract: An automatic inspecting apparatus for the precharge of a data line in a memory device having precharging part to be precharged simultaneously with a data line by clock signals which are output whenever an address is changed, a sensing part for detecting the precharge state, and a storing part for temporarily storing the sensed precharge state, and also for controlling the signals which are supplied to a sense amplifier according to the output signals from the sensing part.

Abstract: An optical head for optical storage, having an optical scanner for scanning a laser beam in a recording region, an objective lens of large aperture for collecting all scanned laser beams, and a method for detecting and correcting the focus error and tracking error, a light source and photodetector, in which the objective lens is fixedly set up and the photodetector is placed at the conjugate point of the focal point of laser beam on the recording media. The laser beams reflected from the media are always collected at the center of photodetector, out of relation to the scan angle, thereby reading uniformly the information from the recording media and it is not necessary to move the objective lens. Therefore, access time can be very short.