摘要:
A parallel processing shrinking key generator is provided. The parallel processing shrinking key generator includes: a selection linear feedback shift register (LFSR); a source LFSR; a selection logic circuit for selecting one of a source bit of the source LFSR and a predetermined input bit according to a selection bit of the selection LFSR; an index counter for assigning an index where output bits of the selection logic circuit are stored at a next clocking of a clock signal, and an output amount register for shifting an output bit of the selection logic circuit according to the assignment of the index counter.
摘要:
Embodiments of the present invention may provide a PET-MRI hybrid system capable of arranging a PET apparatus and an MRI apparatus in a line. An MRI room containing the MRI apparatus and a PET room containing the PET apparatus are provided at either side of a central waiting room as opposed to each other about the waiting room. A rail portion linearly extends from the PET room to the waiting room on their bottoms. Another rail portion linearly extends on the bottom of the MRI room. A transfer unit, which supports a subject lying thereon, travels along the rail portions of the waiting room, the MRI room and the PET room. A bridge unit is provided between the rail portion of the waiting room and the rail portion of the MRI room. The bridge unit provides a space for opening and closing a shield door of the MRI room and allows the transfer unit to be reciprocated between the waiting room and the MRI room by selectively connecting the rail portion of the waiting room and the rail portion of the MRI room.
摘要:
A nanocontact between contact wires is provided. The contact plane of the first nanocontact wire has a quadrant shape. The contact plane of the second nanocontact wire contacting the first nanocontact wire has a quadrant shape symmetrical with the quadrant contact plane of the first nanocontact wire with respect to origin. Thus, magnetization directions of the first and second nanowires are opposite to each other, regardless of initial spin moment orientation of the nanowire. When domain wall is formed, the thickness of the domain wall becomes constant, such that ballistic magnetoresistance ratio can be constant and reproducible.
摘要:
A drum washing machine has a seaming portion of the drum that is prevented from being unfolded or distorted even when the drum is rotated at high speed, by dispersing tension in a circumferential direction, which acts on the seaming portion. The seaming portion is provided with a lift to prevent the laundry from being damaged.
摘要:
The present invention relates to a radar detector having the function of a hands-free device, so that it is possible to talk over a mobile phone in a hands-free manner by connecting the mobile phone to the radar detector. The radar detector comprises a horn antenna 100; a signal-processing unit 200 for detecting a signal received by the horn antenna 100; a laser module 300 for receiving a laser signal; a central processing unit 400 for controlling the signal-processing unit 200 by generating a pulse to measure and calculate the period and width of the signal detected by the signal-processing unit 200, to analyze and output the bandwidth and information of the signal, and to find the type and information of the signal over time; a pulse delay unit 500 for delaying or sustaining the pulse received from the central processing unit 400; a sweep voltage generator unit 600 for driving the signal-processing unit 200 by generating a voltage from the pulse delay unit 500; a warning unit 700 for audibly or visually warning the detected signal; an audio amplifier controller 800 connected to the central processing unit 400 and the warning unit 700 to amplify an audio signal; and a mobile phone connecting unit 900 installed to connect the audio amplifier controller 800 with a mobile phone 10 and including a microphone 910, a switch 920 for reception of a signal from the mobile phone, and a connection portion 930 for connection to the mobile phone. According to the present invention, a user can talk over a mobile phone using an additional function of the radar detector, without a need for mounting an additional hands-free device for conversation by the phone in a vehicle with the radar detector installed therein, thereby improving user's convenience.
摘要:
A radio frequency power combiner includes a plurality of transmission lines connecting a plurality of input terminals to an output terminal. An RF switch is positioned between each of the input terminals and a transmission line connecting the output terminal to the input terminal. The electrical length between each RF switch and the output terminal is preferably one half of a wavelength at a central frequency, which may be realized by two transmission lines of different impedances in each path, each a quarter wavelength long. When the switches are on, the signal power applied to all of the input terminals is combined at the output terminal. When any given switch is turned off, the RF power incident to the switch is reflected, and the transmission lines connected between that switch and the output terminal appear as an open circuit. The power combiner can also operate as a power divider. The combiner and/or divider have particular utility in RF amplifier applications, to prevent excessive loss of RF power when one or more of the amplifiers fail, by switching off the RF switch(es) connected to the failed amplifier(s).
摘要:
A linear power amplifier and method for removing the intermodulation distortion with a predistortion system and a feed forward system. The linear power amplifier having a main power amplifier includes: a predistortion system for firstly suppressing the intermodulation signal generated upon amplification of an RF signal in the main power amplifier, by generating a harmonics corresponding to the input RF signal and a predistortion signal with coupling the RF signal to the harmonics; and a feed forward system for secondly suppressing the intermodulation signal by canceling the input RF signal and the output of the main power amplifier, extracting an intermodulation signal distortion, error-amplifying the extracted intermodulation signal distortion, and coupling the amplified intermodulation signal with the output of the main power amplifier.
摘要:
A washing machine includes a washing shaft that extends through an outer tub, and is coupled to an inner tub and a double rotor motor coupled to the washing shaft. The double rotor motor has two rotors drivable independently from each other and wound independently from each other.
摘要:
Disclosed is a laminated ceramic coupler with a plurality of ports, formed parallel to the lengthwise direction of transmitting lines, serving as bonding electrodes. The coupler comprises a ceramic block, having a plurality of ceramic sheets, with a first and a second transmitting line formed therein; a first to a fourth grooves, running from the top to the bottom of at least one surface perpendicular to the lengthwise direction of the first and the second transmitting line, with such a depth from the surface as to partially expose both ends of each of the first and the second transmitting line; and a first to a fourth ports having first electrode parts formed respectively on the first to the fourth grooves and connected to the ends of the first and the second transmitting line, and second electrode parts formed on one surface parallel to the lengthwise direction of the first and the second transmitting line, with electrical connection to corresponding first electrode parts.
摘要:
A device and a method for combining outputs of a plurality of linear power amplifiers while preventing loss of signals. The combined linear power amplifying device, including: a power divider module which has paths connected respectively between one input terminal and a plurality of output terminals and switches connected respectively to each of the output terminals, for dividing power of a RF signal input to the power divider module and respectively outputting the divided power to the output terminals; a power combiner module which has paths connected respectively between a plurality of input terminals and one output terminal and the switches connected respectively to each of the input terminals, for combining power of a RF signal input to the power combiner module and outputting the combined power; and linear power amplifiers which are connected between the output terminals of the power divider module and the input terminals of the power combiner module, for linearly amplifying the RF signal power-divided in the power divider module thereby outputting the linearly amplified signal to the power combiner module, and upon generation of a failed state of the linear power amplifiers, the failed amplifier opening the path of the affected RF signal by turning off the corresponding switches in said power divider module and said power combiner module.