Abstract:
A method for joint transmitter and receiver processing for computationally efficient equalization in polarization multiplexed (POLMUX) optical orthogonal frequency division multiplexed (OFDM) transmission with direct detection.
Abstract:
An optical receiver system is disclosed. The system includes a local oscillator, a mixer and a processor. The local oscillator is configured to generate a laser signal to indicate a selection of one of a plurality of channels. In addition, the mixer is configured to receive signals on the plurality of channels and to utilize the laser signal to distinguish the signal on the selected channel. Further, the processor is configured to maximize a power level difference between the laser signal and at least one of the plurality of channels based on a total number of the plurality of channels by adjusting the power of the laser signal input to the mixer to limit a noise penalty in the receiver system.
Abstract:
A method of producing an elastomer composite. The method includes A) combining a first fluid comprising elastomer latex with a second fluid comprising particulate filler; B) causing the elastomer latex to coagulate, thereby forming masterbatch crumb; C) bringing the masterbatch crumb to a water content of about 1 weight percent to about 20 weight percent, thereby forming a dewatered coagulum; D) removing water from the dewatered coagulum by subjecting the dewatered coagulum to mechanical energy, thereby causing the dewatered coagulum to heat as a result of friction, while allowing the dewatered coagulum to achieve a temperature of about 130° C. to about 190° C., wherein water content is reduced to about 0.5% to about 3% and wherein substantially all of the decrease in water content is accomplished by evaporation, thereby producing a masticated masterbatch; and E) subjecting the masticated masterbatch to at least an additional 0.3 MJ/kg of mechanical energy while further reducing the water content.
Abstract:
An electronic apparatus with improved heat dissipation comprises a first body with a first shell and a second shell, a second body, a coupling device and a linkage device. The first shell is pivotally connected to the second shell to form an accommodation space. The first shell can pivot relative to the second shell to enlarge the accommodation space and form an opening between the first shell and the second shell. The coupling device couples the second body and the second shell to pivot the second body relative to the second shell to expose or hide the first shell. The linkage device drives the first shell to pivot relative to the second shell. When the second body pivots relative to the second shell toward a first direction, the linkage device drives the first shell to pivot relative to the second shell toward a second direction opposite to the first direction.
Abstract:
A support frame is adapted to provide support to a display device, and includes a pivot seat module, a first support module and a second support module. The pivot seat module is adapted to be mounted to the display device for rotation relative to the display device about a first axis passing through the display device. The first support module is coupled to the pivot seat module, and is disposed to form an angle with a backside of the display device for supporting the display device at a substantially upright position. The second support module is coupled to the pivot seat module, is pivotable relative to the pivot seat module about a second axis that is orthogonal to the first axis, and cooperates with the first support module to support the display device at a lying position.
Abstract:
Adapters, terminal devices, USB connection devices and charging stations are disclosed. The adapter includes a first port configured to connect to an alternate current (AC) source, a conversion module configured to convert an AC power from the AC source into a direct current (DC) power, a second port configured to connect to a first electronic device and provide power thereto, an uplink interface configured to connect to the first electronic device, a downlink interface coupled with the conversion module to obtain an external power supply therefrom and configured to connect to a second electronic device, and a signal control module arranged between the uplink and downlink interfaces, and configured to control a status of a signal in the downlink interface based on a status of a power supply of the uplink interface. The second electronic device enters one of the operating and charging modes based on the status of the signal in the downlink interface, when the second electronic device is coupled with the downlink interface. With the present invention, charging of an electronic device which can be charged only upon recognizing the signal line status of the downlink interface can be enabled even if a computer is powered off or in a sleep state.
Abstract:
A switching control circuit for a switching power converter is provided. The switching control circuit is coupled to a switching device and an auxiliary winding of a transformer. The switching control circuit includes a valley detecting circuit, a valley lock circuit, and a PWM circuit. The valley detecting circuit is coupled to receive a reflected voltage signal from the auxiliary winding of the transformer for outputting a control signal in response to the reflected voltage signal. The valley lock circuit is coupled to receive the control signal for outputting a judging signal in response to the control signal during a first period and a second period following the first period. The PWM circuit outputs a switching signal in response to the judging signal.
Abstract:
Methods and systems for receiving an optical signal using cascaded frequency offset estimation. Coherently detecting an optical signal includes compensating for a coarse laser frequency offset between a transmitting laser and a local oscillator laser by determining a maximum phase error (MPE) in the optical signal, compensating for a residual laser frequency offset between the transmitting laser and the local oscillator laser, and decoding data stored in the optical signal.
Abstract:
The utility model provides an apparatus for correcting upwarp deformation of a large member (11) of a stainless steel car roof, being characterized in that, comprising a crossbeam (1), end support columns (2), a middle support column (3), an arc-shaped positioning body (5), crossbeam pull rings (7), a thin steel taut strap (8), and tighteners (9), the end support columns (2), the crossbeam (1), and the middle support column (3) constitute a supporting part, the arc-shaped positioning body having the same arc shape as an inner arc of the large member of the stainless steel car roof is arranged on the middle support column (3), the thin steel taut strap (8) covers an exterior contour surface of the large member (11) of the stainless steel car roof, and is connected via the tightener (9) to the crossbeam pull rings (7) respectively fixed at two ends of the crossbeam (1). The apparatus can solve the problem of upwarp deformation of the large member of the stainless steel car roof, and restore the arc shape of the car roof and the car width.
Abstract:
A card connector is disclosed. The card connector comprises an insulative base, a plurality of connecting terminals, a card ejecting mechanism and a shielding case. The shielding case covers the insulative base. A card insertion region is formed between the insulative base and the shielding case. A plurality of terminal slots is defined on a surface of the insulative base facing the card insertion region. The connecting terminals are received in the terminal slots. The tray comprises an inner tray and an outer tray. The outer tray is pivotally connected to the inner tray. The inner tray and the outer tray are connected together to form a receiving groove for receiving a SIM card. The tray is formed by pivotally connecting the inner tray to the outer tray, therefore, the card connector according to the present invention can be used more conveniently.