摘要:
An apparatus for rotatably connecting an actuator in a hard disk drive includes a housing coupled to a base of the hard disk drive and having an aperture for enabling rotation of the actuator. A pivot is positioned within the housing and provides a recess for connecting the actuator to the pivot. A lower ball bearing assembly positioned between the housing and the pivot includes: a lower outer wheel, a lower inner wheel and a first ball positioned between the lower outer wheel and the lower inner wheel. An upper ball bearing assembly positioned between the housing and the pivot at a spaced apart location from the lower ball bearing assembly includes: an upper outer wheel, an upper inner wheel and a second ball positioned between the upper outer wheel and the upper inner wheel. The apparatus is configured so that the actuator, the pivot, the lower inner wheel and the upper inner wheel are rotatable within the housing, the lower outer wheel and the upper outer wheel as the actuator extends outwardly from the pivot and the housing through the aperture.
摘要:
A method of generating height information in a circuit board inspection apparatus, first, obtaining a first image corresponding to a first area and a second image corresponding to a second area with partially overlapped to the first area of a test board. Next, the first image and the second image are matched based on the overlapped area of the first and second area. Sequentially, a relative positional relationship of the first and second images is obtained from the result of matching. Sequentially, a combined grid image is generated by combining the first grid image and the second grid image based on the relative positioning relationship, wherein the first and second grid images are obtained by irradiating a grid patterned light toward a measurement object formed on the board inspection apparatus. Therefore, it is possible to generate an exact height information.
摘要:
A memory device includes a first electrode, a second electrode spaced apart from the first electrode and a nanotube or nanowire network disposed between the first electrode and the second electrode, having a stacked structure of a P-type network and an N-type network, and having a diode characteristic. Since the nanotube or nanowire network has the stacked structure of the P-type network and the N-type network, and has the diode characteristic, it is possible to enhance a degree of integration of the memory device and simplify the fabrication processes without separately requiring a selection device.
摘要:
The present invention relates to an apparatus and a method for scheduling multiple bursts containing a collaborative spatial multiplexing (CSM) burst and a non-CSM burst in a broadband radio communication system. The method comprises the steps of packet-scheduling an uplink data packet corresponding to the bandwidth request from a terminal such that the packet is allocated to either the CSM burst or the non-CSM burst, determining a modulation and coding scheme (MCS) level and a transmission power level corresponding to the packet-scheduled uplink data packet using the maximum number of bytes for each MCS level in accordance with the types of the multiple bursts calculated for the terminal, determining a transmission power offset in accordance with the type of the burst to which the packet-scheduled uplink data packet is allocated using the MCS level and the power transmission level determined in the previous step, and generating MAP information for the terminal, containing burst allocation information of the uplink data packet and information of the transmission power offset determined in the previous step.
摘要:
An apparatus and a method for operating an Automatic Repeat reQuest (ARQ) in consideration of an operation state of a Hybrid Automatic Repeat reQuest (HARQ) in a wireless communication system. In the method, when an an ARQ timer expires, operation state information of a HARQ module for controlling a HARQ is determined. Whether to delay generation of Negative ACKnowledge (NACK) information in consideration of the operation state information of the HARQ module, then determined. When determining to delay the generation of the NACK information, the generation of the NACK information is delayed for a delay time determined in consideration of the operation state information of the HARQ module.
摘要:
A solar module patterning apparatus comprises a laser oscillator, a homogenizer and a scanner. The laser oscillator generates a laser beam having a predetermined wavelength. The homogenizer homogenizes an intensity distribution of the generated laser beam provided from the laser oscillator. The scanner scans the laser beam to a solar module. The laser beam is output from the homogenizer and passed through a mask with a predetermined pattern.
摘要:
An electron emission device includes first and second substrates facing each other while a vacuum space is interposed therebetween. An electron emission array is formed on the first substrate to emit electrons toward the second substrate, and phosphor layers are formed on the second substrate. An anode electrode is formed on a surface of the phosphor layers, and receives the voltage required for accelerating electron beams from the electron emission array. A grid electrode is disposed between the first and second substrates and is closer to the second substrate than to the first substrate. The grid electrode has electron beam passage holes, and receives a voltage lower than a location reference voltage.
摘要:
An electron emission device, and an electron emission display using the electron emission device, includes a substrate, electron emission regions formed on the substrate, driving electrodes formed on the substrate to control electron emissions of the electron emission regions, and a focusing electrode disposed above the driving electrodes and insulated from the driving electrodes, the focusing electrode having openings through which electron beams pass. The focusing electrode includes at least two focusing parts electrically separated from each other and the focusing parts focus the electron beams in different directions.
摘要:
An electron emission device includes first and second substrates facing each other while a vacuum space is interposed therebetween. An electron emission array is formed on the first substrate to emit electrons toward the second substrate, and phosphor layers are formed on the second substrate. An anode electrode is formed on a surface of the phosphor layers, and receives the voltage required for accelerating electron beams from the electron emission array. A grid electrode is disposed between the first and second substrates and is closer to the second substrate than to the first substrate. The grid electrode has electron beam passage holes, and receives a voltage lower than a location reference voltage.
摘要:
Disclosed herein is a composition comprising a regioregular polyalkylthiophene and/or a regioregular poly[2,5-bis(3-alkylthiophen-2-yl)thieno(3,2-b)thiophene]; where the composition is melted and then cooled to a temperature between a melting point and a glass transition temperature of the composition; the composition having an amount of crystallinity that is at least twice the amount of crystallinity of another identical composition that is crystallized by a method that does not involve melting and cooling to a temperature between the melting point and the glass transition temperature of the identical composition.