Abstract:
In order to satisfy the conflicting requirements for spectrum sensing and QoS of data transmission, it is highly desirable for a cognitive radio system, e.g. IEEE 802.22 WRAN, to perform spectrum sensing and data transmission simultaneously. Embodiments of the invention address critical issues of self-interference generated from a transmission unit to the co-located sensing unit when the simultaneous sensing and data transmission technique is applied. A number of interference mitigation techniques are described and analyses are given.
Abstract:
A system for accelerating graphics and a memory controller is used for controlling pixel data transmitted to and from the memory device. A cache memory is electrically coupled to the memory and is dynamically configurable to a selected usable size to exchange an amount of pixel data having the selected usable size with the memory controller. The memory device may be an SDRAM. The cache memory may also comprise a plurality of usable memory areas or tiles.
Abstract:
A microfuel cell includes a substrate and a plurality of spaced-apart PEM dividers extending outwardly to define anodic and cathodic microfluidic channels. An anodic catalyst/electrode lines at least a portion of the anodic microfluidic channels, and a cathodic catalyst/electrode lines at least a portion of the cathodic microfluidic channels. Each anodic and cathodic catalyst/electrode may extend beneath an adjacent portion of a PEM divider in some embodiments. Alternately, the microfuel cell may include a plurality of stacked substrates, in which a first substrate has first microfluidic fuel cell reactant channels. A PEM layer may be adjacent the first surface of the first substrate, an anodic catalyst/electrode layer may be adjacent one side of the PEM layer, and a cathodic catalyst/electrode layer may be adjacent an opposite side of the PEM layer. An adhesive layer may secure the first substrate to an adjacent substrate defining at least a second microfluidic fuel cell reactant channel.
Abstract:
PROBLEM TO BE SOLVED: To provide a memory chip of which the general purpose port can be used as a JTAG port. SOLUTION: The memory chip which uses a multi-pin port as the JTAG port, is provided with a JTAG controller, at least one internal block, and composition unit, and one four-pins of the multi-pin port of the chip is selectively composed by the composition unit, and the JTAG data are transmitted to the JTAG controller or non-JTAG data are transmitted to at least one internal block. The composition unit can permanently or changeably composed in general. For example, the composition unit which can be changed, is a volatile memory (VM) composition unit or it can be product term output of programmable logic device (PLD). COPYRIGHT: (C)2010,JPO&INPIT