公开(公告)号：US07383065B2

公开(公告)日：2008-06-03

申请号：US11476419

申请日：2006-06-28

申请人： Craig S. Skinner ,  David Mai ,  Edward Joseph Vertatschitsch

发明人： Craig S. Skinner ,  David Mai ,  Edward Joseph Vertatschitsch

IPC分类号： H04Q7/32

CPC分类号： G06F1/1698 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1635 ,  G06F1/263 ,  H02J7/0044 ,  H04M1/04

摘要： A handheld computer system is disclosed. The handheld computer system includes a housing, a display supported by the housing, and a processor coupled to the display. The handheld computer system also includes a rechargeable battery configured to power the processor and the display. Further, the handheld computer system includes a recharging connector coupled to the rechargeable battery. Further still, the handheld computer system includes a recharger coupled to the recharging connector. Yet further still, the handheld computer system includes a radio frequency transceiver coupled to the processor and powerable by the battery when the battery has a charge above a predetermined low level, the transceiver configured to send and receive data while the battery charge is below the low level and the charger provides charge to the rechargeable battery and to the transceiver.

摘要翻译： 公开了一种手持式计算机系统。 手持计算机系统包括壳体，由壳体支撑的显示器和耦合到显示器的处理器。 手持式计算机系统还包括配置成为处理器和显示器供电的可充电电池。 此外，手持计算机系统包括耦合到可再充电电池的再充电连接器。 此外，手持计算机系统包括耦合到再充电连接器的充电器。 此外，手持式计算机系统包括耦合到处理器的射频收发器，并且当电池具有高于预定低电平的电荷时可由电池供电，该收发机被配置为在电池电量低于低电平时发送和接收数据 电平，充电器为充电电池和收发器充电。

公开(公告)号：US07096049B2

公开(公告)日：2006-08-22

申请号：US09865657

申请日：2001-05-25

申请人： Craig S. Skinner ,  David Mai ,  Edward Joseph Vertatschitsch

发明人： Craig S. Skinner ,  David Mai ,  Edward Joseph Vertatschitsch

IPC分类号： H04Q7/32

CPC分类号： G06F1/1698 ,  G06F1/1626 ,  G06F1/1632 ,  G06F1/1635 ,  G06F1/263 ,  H02J7/0044 ,  H04M1/04

摘要： A handheld computer system is disclosed. The handheld computer system includes a housing, a display supported by the housing, and a processor coupled to the display. The handheld computer system also includes a rechargeable battery configured to power the processor and the display. Further, the handheld computer system includes a recharging connector coupled to the rechargeable battery. Further still, the handheld computer system includes a recharger coupled to the recharging connector. Yet further still, the handheld computer system includes a radio frequency transceiver coupled to the processor and powerable by the battery when the battery has a charge above a predetermined low level, the transceiver configured to send and receive data while the battery charge is below the low level and the charger provides charge to the rechargeable battery and to the transceiver.

公开(公告)号：US06389572B1

公开(公告)日：2002-05-14

申请号：US09322635

申请日：1999-05-28

申请人： Gary Walter Garrabrant ,  Edward Joseph Vertatschitsch

发明人： Gary Walter Garrabrant ,  Edward Joseph Vertatschitsch

IPC分类号： H03M1300

CPC分类号： H03M13/6331 ,  H03M13/45 ,  H04L1/0045

摘要： A method for minimizing errors in a modulated signal transmitted over a transmission medium. The method is applied to the entire data block, thereby incorporating information about the parities of each row of data to fix and correct the errors in the row. Thereafter ISI removal is applied on a row by row basis, with such corrections being applied via soft decision coding. In particular, the data samples are first collected in a data block (or FEC block). A soft decision buffer is thereafter created by taking each sample involved. An FEC word is created by processing down each row of the soft decision buffer and creating a binary stream out of the sign bits for each table entry. This creates an estimate of the word by thresholding it around the zero level. A syndrome is generated via a comparison of the parity bits for each FEC word. The syndrome provides the most likely bit error positions, represented by an offset into the FEC word. The error positions map back into the array of soft decision buffer entries and the absolute value entries are summed for each corresponding position. This produces sets of numbers and the set with the smallest value is used to indicate the error pattern. The bits believed to be in error are flipped in the FEC word. ISI removal is applied to the soft decision buffer on a row-by-row basis (excluding the first row) to create an intermediate data frame, referred to as the Rx Frame. Upon completion, the process is repeated in the other direction for all of the rows except the last row, on a row-by-row basis. Upon completion, the data block errors will be minimized and the received block should match the transmitted block. The process therefore provides minimal data block errors, but at the same time uses less processing resources.

摘要翻译： 一种用于最小化通过传输介质传输的调制信号中的误差的方法。 该方法应用于整个数据块，从而并入有关每行数据的奇偶校验信息，以修正和纠正该行中的错误。 此后，逐行地应用ISI去除，其中通过软判决编码应用这种校正。 特别地，数据样本首先被收集在数据块（或FEC块）中。 之后通过采取涉及的每个样本来创建软判决缓冲区。 通过处理软判决缓冲器的每一行并为每个表条目的符号位创建二进制流来创建FEC字。 这通过在零级别上对其进行阈值来创建该词的估计。 通过比较每个FEC字的奇偶校验位来产生校验子。 该校正子提供了最可能的位错误位置，由FEC字中的偏移量表示。 误差位置映射回软判决缓冲器条目阵列，并且绝对值条目对于每个对应位置求和。 这产生一组数字，并且具有最小值的集合用于指示错误模式。 被认为是错误的位在FEC字中翻转。 逐行（不包括第一行）将ISI删除应用于软判决缓冲区以创建称为Rx帧的中间数据帧。 完成后，对于除最后一行之外的所有行，在逐行的基础上对另一方向重复该过程。 完成后，数据块错误将被最小化，接收到的块应该与发送的块匹配。 因此，该过程提供了最小的数据块错误，但同时使用较少的处理资源。