摘要:
An apparatus for calibrating gain of an radio frequency receiver (“Rx”) is disclosed to provide, among other things, a structure for performing in-situ gain calibration of an RF integrated circuit over time and/or over temperature without removing the RF integrated circuit from its operational configuration, especially when the gain of the RF integrated circuit is susceptible to variations in process, such as inherent with the CMOS process. In one embodiment, an exemplary apparatus includes a thermal noise generator configured to generate thermal noise as a calibrating signal into an input of an Rx path of an RF integrated circuit. The apparatus also includes a calibrator configured to first measure an output signal from an output of the Rx path, and then adjust a gain of the Rx path based on the thermal noise. In one embodiment, the thermal noise generator further includes a termination resistance and/or impedance.
摘要:
A multimedia system for vehicle having a plurality of electrical accessories, including a control housing, a control module, and a dash pad. The control module includes a central processing module. The central processing module is electrically connected with the electrical accessories in such a manner that the central processing module is arranged to centrally control the electrical accessories. The dash pad is detachably mounted on the control housing and is wirelessly communicated with the central processing module, wherein a user is able wirelessly control the electrical accessories in the vehicle through the dash pad.
摘要:
A dynamic image delivery system receives a client request for an image at an image caching server. The image caching server measures the client's network access speed and looks for an appropriate pre-rendered copy of the requested image that is rendered for the client's network access speed in local storage. If the appropriate rendered copy is found, then the image caching server sends the rendered image to the client. If it is not found, then the image caching server dynamically renders a copy of the image and sends it to the client.
摘要:
A portable DVD player, having an output terminal, is detachably received in a console arrangement. The console arrangement includes a DVD player housing, which is adapted for securely supporting within an interior of a vehicle, having a receiving cavity to detachably receive the portable DVD player therein and including an output adapter, which is arranged for electrically extending from a power source of the vehicle, detachably connected to the output terminal of the portable DVD player so as to electrically connect the portable DVD player with respect to the power source of the vehicle.
摘要:
A vehicle seat head rest for mounting to a vehicle seat of a vehicle includes a head pillow and an electronic appliance including a screen module detachably mounted at the head pillow. The head pillow includes a pillow body having a receiving cavity formed at the rear side of the pillow body, a mounting arrangement for mounting to the vehicle seat, and a replaceable skin detachably encasing the pillow body at a position that a peripheral edge of the replaceable skin is folded at the rear side of the pillow body. The screen module is detachably mounted within the receiving cavity and is supported by an interior wall thereof. Thus, the peripheral edge of the replaceable skin is hidden after the screen module is detachably mounted at the rear side of the head pillow.
摘要:
A car seat head rest, which is adapted for mounting on a car seat having two spaced apart retention slots, includes a head pillow, a display screen supported at the rear side of the head pillow, and an adjustable mounting arrangement including a length-adjustable sliding guider longitudinally supported within the interior cavity of the head pillow, a supporting frame having two overlapped sliding panels and two supporting arms downwardly and parallelly extended from the sliding panels respectively through the bottom side of the head pillow to define an engaging distance between the two supporting arms, and an adjuster provided at the sliding guider to control a length of the sliding guider so as to selectively adjust the engaging distance of the supporting arms for slidably engaging with the two retention slots respectively so as to securely support the head pillow on the car seat.
摘要:
An adjustable car seat head rest adapted for mounting on a car seat having two spaced apart retention slots, a head pillow having an interior cavity for a supporting frame wherein a display screen is supported thereon, and an adjustable mounting arrangement which allows the head pillow to be mounted onto the car seat. The mounting arrangement further has a length-adjustable sliding guider, two supporting arms downwardly and parallelly extended from the sliding guider to define an engaging distance between them, and an adjuster provided at the sliding guider to selectively adjust the engaging distance of the supporting arms such that the two supporting arms are adapted for engaging with the two retention slots respectively so as to securely support the head pillow on the car seat.
摘要:
Method and apparatus that use voice/audio recognition and analysis technologies to deliver assigned context sensitive information and data of interest (keywords, phrases, mood, etc.). Context sensitive information and data of interest can be extracted from any voice/audio transmissions and voice/audio recordings (or any transmission or recording that includes voice/audio) for advertising purposes. This invention includes the said assigned context sensitive information and data of interest extraction method using voice/audio recognition and analysis technologies. Most importantly, this invention opens up new doors to advertising using extracted context sensitive information and data of interest from voice/audio transmissions and recordings (or any transmission that includes voice/audio).
摘要:
A transmission system for transmitting a signal from a host to a transmission medium is disclosed. The transmission system includes a current-mode digital-analog converter, an on-chip low-pass filter, a line driver, and output impedance control. Further, a method for transmitting a signal from a host to a transmission medium using on-chip filtering is disclosed. More specifically, an apparatus and method for providing precise control of the filter cut-off frequency at high frequencies is disclosed. The transmission system and method can be used in transmission of Ethernet signals onto an unshielded twisted pair cable. In addition, with appropriate modification, the transmission system and method can be used for transmitting ATM or other signals onto a transmission medium.
摘要:
A novel signal processing scheme comprises a digital to analog converter which is clocked at a first frequency, and a switched capacitor filter which receives input from the digital to analog converter and is clocked at a second frequency which is a multiple N times the first frequency. A preferred version of the present invention further comprises an analog signal sychronization circuit which allows the switched capacitor filter to oversample output from the digital to analog converter. The analog signal sychronization circuit comprises a sample and hold circuit, which receives input from the digital to analog converter and holds the input so that the switched capacitor filter can sample the same input N times, and a digital clock generator, which clocks the sample and hold circuit such that the sample and hold circuit only samples settled and valid output data from the digital to analog converter. An RC active filter receives input from the switched capacitor filter and rejects signal images at the first and higher frequencies.