摘要:
Alteration of voltage input to a voltage regulator output stage from a Vbus regulator stage in a two-stage voltage regulator provides optimal Vbus voltage placement for a wide range of current loads to increase voltage regulator efficiency and is particularly suited to CPUs having power-saving sleep modes of operation. An optimal voltage is selected or developed in response to information concerning operational mode or current consumption of the powered device. As a perfecting feature of one embodiment of the invention in which a discrete Vbus voltage is selected based on operational mode, the selected voltage is adjusted to further optimize the matching of the Vbus voltage placement to the load and provides a continuous range of voltages. In a second embodiment the entire Vbus positioning function is performed in response to current load information. A feed-forward arrangement is provided to avoid transient spikes as the Vbus voltage placement is altered.
摘要:
A power converter having a primary circuit (e.g. full bridge) and a secondary circuit (e.g. current doubler) has switches in the secondary circuit that are controlled by a drive circuit. The drive circuit is connected to a swing node in the primary circuit, and is powered by the swing node. The drive circuit has an isolation device such as a transformer to provide electrical isolation between the primary circuit and secondary circuit. The drive circuit provides a current source for driving the secondary switch gates, thereby reducing power consumption. The present drive circuit provides clean gate drive signals without noise and oscillations. The drive circuits of the invention are simple, and require only a few components.
摘要:
A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with inductors extending under and over opposite sides of the toroidal magnetic core. The coupled inductors are thereby inversely coupled and have a relatively low ohmic resistance. In a second embodiment, the converter comprises a ladder-shaped magnetic core (i.e. having parallel sides, and connecting rungs). In this case, the inductors extend under the sides, and over the rungs. Each inductor is disposed over a separate rung. The ladder-shaped magnetic core is preferably disposed flat on a circuit board. Inverse coupling and low ohmic resistance are also provided in the second embodiment having the ladder structure.
摘要:
An image is formed on a transfer medium comprising a hydrophilic tackifier. Any portion of the image that is dimensionally insufficient to permanently adhere the image to the receiver substrate is determined, and a colorless liquid ink comprising water is applied to cover and surround the portion of the image that is dimensionally insufficient to permanently adhere the image to the receiver substrate. When heat is applied to the image to transfer the image layer to a receiver substrate, water in the image layer swells the image layer and the hydrophilic tackifier becomes sufficiently tacky to permanently adhere the image to the receiver substrate.
摘要:
The present disclosure generally relates to systems and techniques for calibrating displays to improve the white point uniformity between similar type devices. In one embodiment, a backlight includes multiple strings of LEDs, where each string is driven by a separate driver, or driver channel. Each string may be separately tested at a base current to determine its emitted chromaticity, and values indicative of the emitted chromaticities may be stored within the backlight as calibration values. The calibration values may then be used to determine the driving strength for each string that allows the display to produce the target white point when the light from the strings is mixed. Further, in certain embodiments, adjustments also may be made to the LCD panel based on the emitted chromaticities at the base current.
摘要:
The present disclosure provides a communication method, base station and user equipment for configuring a parameter table in a wireless communication system including a base station and a user equipment, the communication method comprising: defining at both the base station and the user equipment a parameter table which includes whole entries of a legacy parameter table and extended entries; and transmitting from the base station to the user equipment a bitmap indication which indicates a sub-table selected from the parameter table, wherein the number of the entries in the sub-table is the same as in the legacy parameter table.
摘要:
A computer system using regular IC or 3D IC is cooled by using liquid coolants such as water, oil, and ionic liquid. Liquid coolant flows in a closed coolant conduit which is configured to thermally contact heat-generating components in a computer system and a large water body such as river and reservoir. The heat created in computer system is carried out by liquid coolant and dissipated to large water body. The cooling system is simple and cost-effective.
摘要:
A computer system using regular IC or 3D IC is cooled by using liquid coolants such as water, oil, and ionic liquid. Liquid coolant flows in a closed coolant conduit which is configured to thermally contact heat-generating components in a computer system and a large water body such as river and reservoir. The heat created in computer system is carried out by liquid coolant and dissipated to large water body. The cooling system is simple and cost-effective.
摘要:
A computer system includes central processing units designed by using reduced instruction set computing (RISC) strategy, dynamic random access memory (DRAM) packages manufactured by using three-dimensional integrated circuit (3D IC) stacked using through-silicon via (TSV) stacking processes, and liquid cooling approach. The system has advantages of low power consumption, fast DRAM access rate, high performance, high cooling efficiency, small form factor, and low costs. Cooling liquid could be water, oil, and ionic liquid. The heat generated in 3D IC chips is carried out by liquid coolant and dissipated to heat exchanger where cooling water dissipates heat to large water body such as river, reservoir, or ocean. The computer disclosed in this invention is suitable to be a server for application in datacenter.
摘要翻译:计算机系统包括通过使用精简指令集计算(RISC)策略设计的中央处理单元,使用通过使用硅通孔(TSV)堆叠处理堆叠的三维集成电路(3D IC)制造的动态随机存取存储器(DRAM)封装 ,和液体冷却方式。 该系统具有功耗低,DRAM访问速度快,性能高,冷却效率高,外形尺寸小,成本低等优点。 冷却液体可以是水,油和离子液体。 3D IC芯片产生的热量由液体冷却剂进行,并散发到热交换器,冷却水将热量散发到诸如河流,水库或海洋等大型水体。 本发明公开的计算机适合作为数据中心应用的服务器。
摘要:
A wireless communication system and a method for detecting downlink receiving power in the system are disclosed. N cells in the system respectively transmit data to at least one receiving terminal via N resource blocks using the same time-frequency resources; multiple channel state information reference signals (CSI-RSs) of a corresponding cell are set in each resource block, and orthogonality is maintained among the CSI-RSs of all the cells, wherein N is an integer greater than 1. Said method includes: an additional demodulation reference signal (DM-RS) used for indicating a receiving power is set in a puncture position in the resource block of the first cell which corresponds to a CSI-RS set in a resource block of another cell; and the receiving power of said first cell is detected according to said additional DM-RS. By using said method, the receiving power of a single cell in N cells can be detected, and the system overhead is not increased.