Abstract: A semiconductor memory device having a memory cell array, an input buffer, an output buffer, and an input-output control circuit that receives a write control signal and controls the input and output buffers. The output buffer generates a commencement signal indicating commencement of output. A mask generating circuit generates a mask signal with delayed active-to-inactive transitions from the commencement signal. A masking circuit passes the write control signal to the input-output control circuit while the mask signal is inactive, and holds the write control signal in the write-disabling state while the mask signal is active. The mask signal prevents unintended writing of data in the memory cell array when the write control signal is contaminated by noise from the output buffer.
Abstract: A fluorescent lamp adapted for effecting stepless dimming with a regular SCR dimmer, comprising a filter and rectifier circuit (1), a DC high voltage stabilizing circuit (2), a voltage signal detection and frequency control circuit (6), a lamp load (4), a lamp current feedback circuit (5) and a voltage signal sampling circuit (3) thereby changing the power factor and luminous intensity of the lamp in accordance with the variation of the conduction phase angle of the silicon controlled rectifier dimmer. The present invention solves the discontinuity and instability issues in course of dimming operation and is particularly adapted for use in an integrated compact fluorescent lamp.
Abstract: A network telephone expansion seat including a housing and a signal conversion module is provided. The housing has a bearing portion for disposing a network telephone thereon. The signal conversion module disposed inside the housing has a circuit substrate. At least one connection interface for transmitting data is disposed on the circuit substrate for connecting the network telephone to transmit data. Meanwhile, the circuit substrate is connected to peripherals such as a printer, a facsimile machine, a card reader, and an MP3 player via the connection interface, thereby expanding the functions of the network telephone.
Abstract: A QoS call routing system using a counselor and a speech recognition engine comprises a speech recognition engine for recognizing speech and outputting characters and speech recognition results; a first counselor group terminal for reproducing the client's speech file to a counselor of a first counselor group so that the counselor may recognize the speech when the speech recognition result by the speech recognition engine is less than a reference value; a second counselor group terminal for allowing a counselor of a second counselor group to hear the client's speech so that the counselor may recognize the speech when the recognition by the counselor of the first counselor group has failed; and an IVR server for controlling the engine and terminals to provide information to the client.
Type:
Grant
Filed:
June 15, 2005
Date of Patent:
March 30, 2010
Assignee:
SK Marketing & Company, Co., Ltd.
Inventors:
Do-Sung Kim, Dong-Soon Min, Kwan-Sik Yoo, Seung-Woo Chung, Jeong-Hun Lee
Abstract: A method for preparing a dispersion of conductive carbon materials is provided. The method includes dissolving a sulfonated chitosan in an aqueous solution, wherein the amount of the sulfonated chitosan of the solution is about 0.1-3 wt %. Then, a conductive carbon material is added into the solution, and the conductive carbon material in the solution is dispersed across the solution. The conductive carbon material can be carbon black or carbon nanotube.
Abstract: A toner cartridge is detachably attached to an image forming apparatus and supplies toner to the image forming apparatus. The locking mechanism is positioned either at a locking position or at a non-locking position. Shortly after the toner cartridge has been attached to the image forming apparatus, the locking mechanism is at a non-locking position. When a user operates a driving member of the toner cartridge after the toner cartridge has been attached to the image forming apparatus, the operating lever engages the locking mechanism to cause the locking mechanism to move to a locking position. When the locking mechanism is at the locking position, the locking mechanism limits the driving member to move relative to the engagement portion, so that the toner cartridge is not allowed to be detached from the image forming apparatus.
Abstract: A mini plug connector has an insulative housing, a plurality of terminals and a metal shell. The insulative housing has a base, a tongue and a plurality of mounting holes. The tongue protrudes from the base and has a top, a space and at least one top elongated recess. The space and the at least one top elongated recess are defined in the top of the tongue. The terminals are mounted respectively through the mounting holes. The metal shell covers the insulative housing. The at least one top elongated recess prevents the insulative housing from being defective and deforming when the insulative housing is manufactured by an injection molding process.
Abstract: The present invention provides a data transfer network receiving a higher evaluation overall than conventional ones from various perspectives such as the number of effective nodes, the required number of links, and the required maximum node capacity. The present invention is a data transfer network of a hyper configuration in which each node is an element of m (m is 2 or more) different local networks. Further, at least one of the local networks to which the respective nodes belong is a hub network and, when a node belongs to a local network other than a hub network, the local network is a full mesh network.
Abstract: A fan rotation speed control circuit of a power supply system is provided, which is applicable for controlling the rotation speed of the fan according to a loading state outputted by the power supply system. The fan rotation speed control circuit of the power supply system includes a waveform generating module, for generating an oscillating waveform signal; a current retrieving module, for retrieving a current signal corresponding to the loading state; a rotation speed control signal generating module, for comparing the oscillating waveform signal with the current signal, and generating a rotation speed control signal; a signal amplifying module, for amplifying an amplitude of the rotation speed control signal and outputting the amplified rotation speed control signal to the fan, so as to control the rotation speed of the fan.
Abstract: A light transceiver module is designed for electronic devices. It forms an electric connection with the electric connector of the electronic device. The light transceiver module contains a base, a light-emitting device for providing optical signals, a light-receiving device for receiving optical signals, and a main circuit board. The base supports the light-emitting device, the light-receiving device, and the main circuit board. The main circuit board has a pluggable electric connector for connections with the electric connector of the electronic device. The light transceiver module can be used to simplify and optimize the devices using it.
Type:
Grant
Filed:
December 22, 2006
Date of Patent:
March 16, 2010
Assignee:
Industrial Technology Research Institute
Abstract: Provided is an optical wavelength coupler using a multi-mode interference. The optical wavelength coupler is a planar waveguide type optical device that can distribute or couple two optical signals having different wavelengths by using the multi-mode interference. The optical wavelength coupler is suitable for integration and is small-sized. Also, the optical wavelength coupler has a low manufacturing tolerance and a low loss, and is insensitive to TE/TM polarization.
Abstract: The present invention provides an apparatus and an associated method for sampling timing compensation, which can estimate sampling frequency offset between the receiver and transmitter of a multi-carrier system according to estimated frequency responses of two consecutive received symbols within each pilot subchannel, and compensate an accumulated sampling timing offset resulted from the sampling frequency offset. When the accumulated timing offset is not large, the apparatus uses a phase rotator to compensate with a corresponding accumulated phase rotation in frequency domain. When the accumulated timing offset is large, the apparatus first compensates with a specific timing offset in time domain, and then uses the phase rotator to compensate with a phase rotation corresponding to the remaining timing offset in frequency domain. A timing controller is used to compensate with the specific timing offset by adjusting a clock generator or a cyclic prefix remover of the receiver.
Type:
Grant
Filed:
March 18, 2004
Date of Patent:
March 16, 2010
Assignee:
Realtek Semiconductor Corp.
Inventors:
Der-Zheng Liu, Tai-Cheng Liu, Song-Nien Tung, Kuang-Yu Yen
Abstract: A multi-rate clock signal extracting device includes a light modulator, a photoelectric converter, a band-pass filter unit, a phase comparison unit, a bit rate changeover switch and a modulating electric signal generating unit. The light modulator modulates a light signal according to a modulating electric signal as a mixing signal obtained by mixing an electric signal with frequency f/(2j?1) and an electric signal with frequency ?f so as to output it as a modulated light signal. The modulated light signal is converted into a first electric signal by the photoelectric converter. A second electric signal group with frequency (2n?1)×?f is generated from signal components with frequencies (2n?1)×?f included in the modulated light signal by the photoelectric converter and the band-pass filter unit so as to be input into the phase comparison unit.
Abstract: An object of the present invention is to provide an OCDM transceiver with which the reduction amount of the intensity of the correlation waveform signal is smaller than that of a conventional device of the same type in the decoding step that comprises a time gate processing step. Hence, in the OCDM transceiver of the present invention that comprises an encoding portion and a decoding portion, the decoding portion is constituted comprising a decoder, clock extractor, and time gate. The decoder decodes an encoded optical pulse signal and separates the encoded optical pulse signal into a clock signal extraction signal and an optical pulse signal playback signal. The clock extractor extracts a clock signal from the clock signal extraction signal. Further, the time gate removes only the auto-correlation waveform component from the optical pulse signal playback signal. The auto-correlation waveform component is converted to an electrical signal by means of an optical receiver and generated as a reception signal.
Abstract: A host with a removable device includes a main body, a removable device, and a fixing and withdrawing mechanism. Each element of the fixing and withdrawing mechanism is connected with each other by using a plurality of springs. When the removable device is placed into the host, a slide rod is pushed and a link rod is linked, such that the removable device is fastened in the host by using the link rod. When a user pulls an actuating rod, the link rod is guided to release the fastening state, and the removable device is ejected by using the slide rod under the forces of the springs.
Type:
Grant
Filed:
October 14, 2008
Date of Patent:
March 16, 2010
Assignee:
Inventec Corporation
Inventors:
Kuei-Chou Hsieh, Yung-Shou Lee, Chen-Jie Wu, Hsiang-Yun Lu
Abstract: Provided is a vertical cavity surface emitting device. The surface emitting device includes a lower mirror layer emitting light having a long wavelength, an active layer providing an optical gain, a tunnel junction layer for confining a current, and an upper mirror layer, which are sequentially stacked on a compound semiconductor substrate, wherein a heat release layer is formed on side surfaces of at least one of the active layer, the tunnel junction layer and the upper mirror layer by using etching process, and the heat release layer has greater thermal conductivity than at least one of the active layer, the tunnel junction layer and the upper mirror layer.
Type:
Grant
Filed:
December 5, 2007
Date of Patent:
March 16, 2010
Assignee:
Electronics and Telecommunications Research Institute
Abstract: The invention is to provide an adjustable vacuum food storage container, comprising of a base, a socket mounted on the base, and a cover covering the socket; a vacuum controller, a pressure detective means, an out connector power means, a spare battery set, and a power switch are disposed on the base, and an exhaust valve are further added on upper cover; the pressure detective connected to the socket for auto-detecting the accommodation between the socket and the upper cover, and the vacuum controller combined to the pressure detective means for keep it at vacuum state at any moment.
Abstract: A keyless adjusting mechanism for a chain saw is disclosed herein, which comprises a protection cover, an adjusting bolt, an adjusting stud, and an adjusting ring with a driver gear, wherein the adjusting bolt is coupled with a driven gear for engaging with the driver gear of the adjusting ring, the adjusting stud is coupled with a chain board and has a threaded hole for engaging with the corresponding adjusting bolt. Accordingly, when the adjusting ring is rotated, the driver gear can bring the driven gear to let the adjusting stud move axially along the adjusting bolt such that the chain could be adjusted to tighten or loosen. In addition, a knob with a handle is coupled to the adjusting ring. The handle can be withdrawn in the knob or extended out of the knob for convenient twist.
Abstract: A loudspeaker apparatus includes a speaker unit and a front cover. The speaker unit generates acoustic waves according to an external electronic signal. The front cover located in front of the speaker unit includes a plurality of elastic spacers and a diaphragm, and the elastic spacers and the diaphragm form an enhanced chamber, such, that the acoustic waves generated by the speaker unit go through the enhance chamber, and then drives the diaphragm to generate the acoustic waves again.