摘要:
A circuit and a method for self refresh of DRAM cells are provided. The circuit comprises a bias generator and an oscillator. The bias generator comprises a first current generator, a second current generator and a converter. The first current generator generates a first leakage current of “0” state cells. The second current generator generates a second leakage current of “1” state cells. The converter transforms a current comprising the first leakage current and the second leakage current into output biases. The method comprises generating leakage currents from memory cells; transforming the leakage currents into output biases for determining a self refresh period; and using the output biases to control an oscillator for generating a periodical signal pulse in response to the leakage currents.
摘要:
A microinjector uses bubbles as virtual valves to eject droplets of different sizes. The microinjector is in fluid communications with a reservoir and has a substrate, an orifice layer, and a plurality of nozzles. The substrate has a manifold for receiving ink from the reservoir. The orifice layer is positioned on the top of the substrate so that a plurality of chambers are formed between the orifice layer and the top of the substrate. Each of the nozzles has an orifice and at least three bubble generating components. The bubble generating components are selectively driven by a driving circuit so that each nozzle can eject droplets of different sizes.
摘要:
A surface isolation device for isolating a predetermined area of a second surface of a wafer from an etching solution while the etching solution etches a first surface of the wafer to form a plurality of manifolds in the wafer. The surface isolation device has a base for positioning the wafer, a fixture for fixing the wafer on the base, and an isolation ring positioned on the base for isolating the predetermined area from the etching solution. When the fixture fixes the wafer on the base, the wafer sticks to the isolation ring, forming a seal that isolates the predetermined area from the etching solution.
摘要:
An optical blood glucose detecting apparatus and an operating method thereof are disclosed. The optical blood glucose detecting apparatus includes a detecting module, an assisting and strengthening module, and a data processing module. The detecting module provides an incident optical signal passing through a detected portion of skin surface into a skin interstitial fluid, captures a blood glucose optical reflection message of the skin interstitial fluid, and it interferes the blood glucose optical reflection message and the incident optical signal to generate a detected data. The assisting and strengthening module provides a physical or chemical effect on a tissue region under the detected portion to strengthen the blood glucose optical reflection message. The data processing module processes the detected data to determine a blood glucose concentration.
摘要:
An optical touch apparatus includes an inputting interface, an optical module, a light receiving module, and a processing module. The inputting interface includes a surface and a light transmitting unit under the surface. The optical module and the light receiving module are set on a first side and a second side of the inputting interface. The optical module receives an incident beam and generates a plurality of parallel sensing lights according to the incident beam. When the plurality of parallel sensing lights pass the light transmitting unit to the light receiving module, the light receiving module generates a sensing result according to the condition the light receiving module receives the plurality of sensing lights. The processing module determines a touch point position formed on the surface according to the sensing result.
摘要:
An optical touch apparatus including an input interface, at least one sensing module, and a processing module is disclosed. The input interface includes at least one functional input key, and the position of the at least one functional input key disposed on the input interface corresponds to that of the at least one sensing module disposed on the surrounding of the input interface. The at least one sensing module generates a sensing result according to the condition that the at least one sensing module receives sensing lights. The processing module determines touch point position formed on the input interface according to the sensing result.
摘要:
A fundus optical image device includes a light source, a first optical element set and a second optical element set. The first optical element set includes a first diaphragm. The light emitted from the light source passes through the first diaphragm and reaches a fundus through the first optical element set. The second optical element set includes a second diaphragm. The light is reflected by the fundus and then passes through the second diaphragm to present an image of the fundus. At least one of the first diaphragm and the second diaphragm is a microarray diaphragm.
摘要:
An intraocular pressure detecting device includes an image capturing unit, a processor, and a pressure detection unit. The image capturing unit, coupled to the image capturing unit, is capable of acquiring an eye image. According to the eye image, the processor can determine an intraocular pressure detection area. After the pressure detection unit detects the intraocular pressure detection area, the intraocular pressure is calculated by the processor of the intraocular pressure detecting device.
摘要:
The invention discloses a touch sensing device, which includes a containing space, a first substrate layer, a second substrate layer, a driver, and a sensor. The first substrate layer and the second substrate layer define the containing space for containing a fluid. The driver can provide charges to a first conducting layer of the first substrate layer, a second conducting layer of the second substrate layer, and the fluid. The sensor can sense the electric characteristics of the fluid. When a point unit approaches the touch sensing device and influences the charges, the appearance of the fluid could be changed and then the electric characteristics could also be changed.
摘要:
A memory macro includes a first set of cells disposed in a first area of a memory array, and a second set of cells, which differ from the first set of cells in physical dimensions, disposed at an edge of the first area for improving robustness of the cells at the edge of the memory array.