摘要:
Disclosed herein are systems and devices having memories with reference-initiated sequential sensing. In one embodiment, a reference-initiated sequential sensing method comprises: forming a first attribute measurement associated with a stored data value in a first memory element; using the first memory element to determine a decision threshold; comparing the first attribute measurement to the decision threshold to determine the stored data value in the first memory element; forming a subsequent attribute measurement associated with a stored data value in a subsequent memory element; and comparing the subsequent attribute value to the decision threshold to determine a data value stored in the subsequent memory element.
摘要:
A system and method for determining the logic state of a memory cell in a magnetic tunnel junction (MTJ) memory device based on the ratio of the current through the cell at different bias points are disclosed. A memory cell in an MJT memory device is sequentially subjected to at least two different bias voltages. The current through the cell at each of the bias voltages is measured, and a ratio of the different currents is determined. The ratio is then compared with a predetermined value to determine the logic state of the cell. The predetermined value can be a known value. Alternatively, the predetermined value can be determined by application of the system and method to a reference cell having a known logic state.
摘要:
A system and method for determining the logic state of a memory cell in a magnetic tunnel junction (MTJ) memory device based on the ratio of the current through the cell at different bias points are disclosed. A memory cell in an MJT memory device is sequentially subjected to at least two different bias voltages. The current through the cell at each of the bias voltages is measured, and a ratio of the different currents is determined. The ratio is then compared with a predetermined value to determine the logic state of the cell. The predetermined value can be a known value. Alternatively, the predetermined value can be determined by application of the system and method to a reference cell having a known logic state.
摘要:
An initialization method of an electrophotographic image forming apparatus includes rotating a photosensitive member to receive toner along a width of the photosensitive member prior to activation of a charging unit and to remove the toner with a cleaning unit, and activating the charging unit configured to charge the photosensitive member in response to a determination of a completion of a predetermined number of rotations of the photosensitive member.
摘要:
A tuneable laser including a light creating section to generate light and a tuneable section formed of a semiconductor material which utilises the electro-optic effect to achieve a change in the refractive index of the material, Δn, under the influence of an applied field, F, in accordance with the equation: Δn=−½n03[rF+sF2]≡ΔnL+ΔnQ, where no is the refractive index at zero field and ΔnL and ΔnQ are the linear and quadratic contributions to the change in refractive index respectively, r is the linear electro-optic coefficient of the material and s is the quadratic electro-optic coefficient of the material, the tuning section including a waveguide and the material of the waveguide incorporating a plurality of quantum dots and operating in a wavelength region where the value of rF is sufficiently greater than the value of sF2, so as to operate with the dominant effect on Δn being contributed by the linear effect.
摘要:
Disclosed herein are systems and devices having memories with reference-initiated sequential sensing. In one embodiment, a reference-initiated sequential sensing method comprises: forming a first attribute measurement associated with a stored data value in a first memory element; using the first memory element to determine a decision threshold; comparing the first attribute measurement to the decision threshold to determine the stored data value in the first memory element; forming a subsequent attribute measurement associated with a stored data value in a subsequent memory element; and comparing the subsequent attribute value to the decision threshold to determine a data value stored in the subsequent memory element.
摘要:
Methods and apparatuses are disclosed for measuring values of a plurality of memory elements, where the measured values may be indicative of the digital state of a memory element. Calculations may be performed on a plurality of transition-terms associated with the possible transitions in the values between proximate memory elements. The digital state of memory elements may be determined using the calculations performed on the plurality of transition-terms.
摘要:
An amount of material in a container is determined by measuring a time it takes for an object to move through the material, and determining the amount of material based on the measured time.
摘要:
A tuneable laser including a light creating section to generate light and a tuneable section formed of a semiconductor material which utilises the current injection free electron plasma effect to achieve a change in the refractive index of the material, wherein the tuneable section has a plurality of quantum dots having enhanced polarsability compared to the bulk semiconductor material surrounding the quantum dots.
摘要:
A method for reading the magnetization orientation of a memory cell includes applying a magnetic field to the memory cell, observing any change in resistance of the memory cell as the magnetic field is applied, and determining the magnetization orientation based upon the observed change in resistance of the memory cell.