摘要:
Disclosed are methods and apparatus to control data and command flow over a physical communications channel between a transmitter and a receiver, and more specifically to provide a protocol for a point-to-point serial bus architecture with low latency time for flow control and other signaling, regardless of the length of the data packet frame. The abstract data flow control protocol can be employed by various buses as it interacts only with the lowest protocol layers. Separate buffers for data and control can be used to allow the bus to be compatible with slower buses also to support additional control functions without involving a higher protocol layer.
摘要:
Disclosed is a receptacle connector assembly for an IC card, comprising: a connector housing (20) having a top surface (21), a bottom surface (22), and a peripheral wall (23) located between the top surface and bottom surface; a plurality of terminals (30) mounted in the connector housing and extending from the peripheral wall; a shielding member (40) removably attached to the top surface of the connector housing and having a portion extending over the terminals; and a supporting member (50) removably attached to the connector housing and covering the portion of the shielding member extending over the terminals.
摘要:
An allocation period for packet data in a packet data communication system is determined. Measurements from mobile stations are collected and a maximum allocation period for at least one possible base station for transmitting data packets to the mobile station is determined on the basis of the collected measurements. A base station and a corresponding allocation period are selected on the basis of the at least one determined maximum allocation period.
摘要:
A compression tool including a ram; a drive system, a battery and a user selectable retraction control. The drive system is connected to the ram to extend the ram and allow retraction of the ram. The battery is connected to the drive system to at least partially power the drive system. The user selectable retraction control is connected to the drive system. The user selectable retraction control includes a plurality of ram retraction settings which are adapted to be selected by a user to at least partially control respective different retraction stopping locations of the ram.
摘要:
A communication link for communicating data between a first opto-electronic equipment capable of providing an optical signal and a second opto-electronic equipment capable of receiving the optical signal is described. The communication link includes a first optical channel and a second channel. The first optical channel is preferably a high-speed optical channel for conveying information requiring high-speed connection and the second channel is preferably a slow channel providing, for example a low-power monitoring function. An opto-mechanical device for providing a communication link, including a first opto-electronic equipment for providing an optical signal, a second opto-electronic equipment for receiving the optical signal, a first optical channel and a second channel is also described.
摘要:
A method for displaying data on a portable electronic device first displays graphical data on a graphical display. An event that is independent of the graphical data is received at the device. Responsive to the event, an event type is selected from a list that associates each of at least two event types with one of at least two display formats. A notifier of the event, in the selected format, is then displayed on the graphical display simultaneously with the graphical data. The formats are specific to the event types so that a user can decide whether to continue viewing the graphical data and not respond to the event notifier, or terminate the graphical data being displayed and respond to the event. Examples of events include an alarm from a locally stored user calendar, an incoming phone call, an SMS message, and an email. A computer program and a device are also detailed.
摘要:
Disclosed are a method and a system that operates in accordance with the method to set up a TCP session between a MS and an end point destination via a wireless network and the Internet. The method includes sending a split TCP connection request from the MS to a PEP located in the network, where the split TCP request includes information for identifying a network address of the MS and a network address of the end point destination. The method further includes, in response to receiving the split TCP connection request from the MS, establishing a split TCP connection that includes a wireless TCP (WTCP) connection between the MS and the PEP, and a TCP connection at least part way between the PEP and the end point destination. In one embodiment the end point destination is an application server that is coupled to the Internet, and the TCP connection is established between the PEP and the application server. In another embodiment the end point destination is a second MS that is coupled to a second PEP in a second wireless network, and the TCP connection is established at least as far as the second PEP, and then as a WTCP connection from the second PEP to the second MS.
摘要:
Disclosed is a method, a computer program product and a device that includes a receiver for receiving a downlink signal transmitted into a cell. The receiver is operable to obtain time, carrier frequency and cell-specific preamble synchronization to the received signal and includes a plurality of synchronization units that include a first detector to detect a frame boundary using preamble delay correlation; a second detector to detect the frame boundary with greater precision using a conjugate symmetry property over a region identified by the first detector; a cyclic prefix correlator to resolve symbol boundary repetition; an estimator, using the cyclic prefix, to estimate and correct a fractional carrier frequency offset; an operator to perform a Fast Fourier Transform of an identified preamble symbol and a frequency domain cross-correlator to identify cell-specific preamble sequences and an integer frequency offset in sub-carrier spacing. The transmitted signal may be a downlink signal transmitted into the cell from a base station that is compatible with IEEE 802.16e (WiMAX).
摘要:
A method for constructing and selecting non-recursive orthogonal variable spreading factor (OVSF) codes is provided. The method includes: defining a variable B=SFmax/SFmin, where SFmax is a maximum desired spreading factor and SFmin is a minimum desired spreading factor; forming B unique base matrices Gk of dimension SFmin×SFmin, where GiGiT=SFminImin ∀i, where T denotes a matrix transpose and Imin is an SFmin×SFmin identity matrix; forming a modulation matrix M of dimension B×B such that MMT=BIB, where IB is a B×B identity matrix; forming an SFmax×SFmax orthogonal variable spread factor (OVSF) code matrix C′ as: C ′ = [ M 1 , 1 · G 1 M 1 , 2 · G 2 … M 1 , B · G B M 2 , 1 · G 1 M 2 , 2 · G 2 … M 2 , B · G B ⋮ ⋮ ⋰ ⋮ M B , 1 · G 1 M B , 2 · G 2 … M B , B · G B ] , where Mi,j is a scalar from the i-th row and j-th column of the modulation matrix M, Gl . . . GB is the k-th base matrix Gk and Mi,j·Gk denotes the multiplication of the elements of Gk by the scalar Mi,j; selecting a row of the OVSF code matrix C′ to use as a pseudo-noise (PN) code; and one of spreading or despreading a signal using the selected PN code.
摘要翻译:提供了一种用于构造和选择非递归正交可变扩展因子(OVSF)码的方法。 该方法包括:定义变量B = SFmax / SFmin,其中SFmax是最大期望扩频因子,SFmin是最小期望扩频因子; 形成尺寸为SFminxSFmin的B唯一基本矩阵Gk,其中GiGiT = SFminImin∀i,其中T表示矩阵转置,Imin是SFminxSFmin单位矩阵; 形成尺寸为BxB的调制矩阵M,使得MMT = BIB,其中IB是BxB单位矩阵; 形成SFmaxxSFmax正交可变扩展因子(OVSF)码矩阵C'为:C'= [M 1, G 1 M 1,2, G 2 ... M 1,B。 G B M 2,1。 G 1 M 2,2。 G 2 ... M 2,B。 B,⋮⋮⋰⋮M B,1。 G 1 M B,2。 G 2 ... M B,B。 G B],其中Mi,j是从调制矩阵M,G1的第i行和第j列的标量。 。 。 GB是第k个基本矩阵Gk和Mi,j.Gk表示Gk的元素乘以标量Mi,j; 选择一行OVSF码矩阵C'以用作伪噪声(PN)码; 以及使用所选PN码扩展或解扩信号的一个。
摘要:
A method for forming a surfboard is provided. The method comprises adding a polyethylene mixture into a mold having one or more ventilation holes located therein. The polyethylene mixture comprises a blend of a polyethylene material and a foaming agent. The polyethylene material is in a form comprising at least one of a powder form, a pellet form and mixtures thereof. In addition, the method comprises heating the polyethylene mixture in the mold while rotating the mold for a pre-determined period of time and at a predetermined temperature. Further, the method also comprises cooling the mold for a predetermined amount of time, and wherein either a main body of a surfboard or an entire surfboard is then formed.