公开(公告)号：US06883056B2

公开(公告)日：2005-04-19

申请号：US09852032

申请日：2001-05-10

申请人： Masahisa Kobayashi

发明人： Masahisa Kobayashi

IPC分类号： G06F1/26 ,  G06F13/40 ,  H04L29/00 ,  G06F13/14

CPC分类号： G06F13/4045 ,  Y10T307/735

摘要： An IEEE 1394 apparatus is disclosed wherein, even when the used power supply is changed over, coincidence of a power class is maintained. A voltage detection unit determines whether or not the output voltage of a power supply circuit is higher than a reference voltage. A code generation bloc generates, based on a result of the determination of the voltage detection unit, a code indicative of power class information which is information representing which one of power supplied from a serial bus and the power supply of its own is used for operation of the IEEE 1394 apparatus. When a changing point detection unit detects a change of the result of the determination from the voltage detection unit, it resets a PHY. When the PHY is reset, it performs self-identification and places the code generated by the code generation unit and indicative of the power class information into a Self-ID packet to be used for transmission of a result of the self-identification to a bus manager, and outputs the Self-ID packet.

摘要翻译： 公开了一种IEEE 1394装置，其中即使当使用的电源被切换时，也保持功率等级的一致性。 电压检测单元确定电源电路的输出电压是否高于参考电压。 代码生成块基于电压检测单元的确定结果生成表示功率等级信息的代码，该代码是表示从串行总线提供的电力和其自身的电源中的哪一个被用于操作的信息 的IEEE 1394设备。 当变化点检测单元从电压检测单元检测到确定结果的改变时，它重置PHY。 当PHY被复位时，它执行自身识别，并将代码生成单元生成的代码并将功率等级信息表示在自身ID分组中，以将自身识别结果传送到总线 管理器，并输出自身ID数据包。

公开(公告)号：US07010703B1

公开(公告)日：2006-03-07

申请号：US09690434

申请日：2000-10-18

申请人： Masahisa Kobayashi

发明人： Masahisa Kobayashi

IPC分类号： G06F1/26

CPC分类号： H04L12/10 ,  H04L12/40052

摘要： A bus power-supply device structured to supply power from a power-supply voltage of a node to a serial bus connected to the node through a physical layer and a plurality of connectors conductive to each other of the node, which device, when none of a power-supply voltage of the node is supplied, supplies a DC voltage from the serial bus to the physical layer and when the power-supply voltage is supplied, cuts off a path for supplying a DC voltage from the serial bus to the physical layer to supply a DC voltage from the power-supply voltage to the physical layer.

摘要翻译： 一种总线供电装置，其被构造成通过物理层和与所述节点相互导通的多个连接器将节点的电源电压的电力提供给连接到所述节点的串行总线，所述装置当没有 提供节点的电源电压，将来自串行总线的DC电压提供给物理层，并且当提供电源电压时，切断用于从串行总线向物理层提供DC电压的路径 从电源电压向物理层提供直流电压。

公开(公告)号：US4289926A

公开(公告)日：1981-09-15

申请号：US131654

申请日：1980-03-19

申请人： Masahisa Kobayashi

发明人： Masahisa Kobayashi

IPC分类号： G06F3/045 ,  G06F3/033 ,  G06F3/041 ,  G06F3/044 ,  G06K11/00 ,  G06K11/06 ,  G08C21/00

CPC分类号： G06F3/044

摘要： The invention improves the signal-to-noise ratio of a telewriter transmitter without requiring a change in preexisting telewriter transmission equipment. The individual crosspoints of an orthogonal matrix of wires are identified by high-frequency X and Y signals having phase-shifted characteristics which identify individual crosspoints by phase angles. The use of high frequencies reduces coupling impedance, especially when moisture is present or humidity is high. The high frequency signals are picked up by an electrostatic coupling between the point of a pen and any selected crosspoint which the pen happens to be near. The picked-up signal is amplitude modulated to increase its strength and then fed back to the identified crosspoint, thereby enhancing the strength of the picked-up signal. The enhanced signal is again picked-up and demodulated to recover the original phase-shifted characteristics of the signal which individually identified a crosspoint selected by the pick up means. The demodulated signals are then converted into the form of crosspoint identification signal which is used by the preexisting telewriter transmission system.

摘要翻译： 本发明提高了电报机发射机的信噪比，而不需要改变预先存在的电传传输设备。 线的正交矩阵的各个交叉点由具有相移特性的高频X和Y信号识别，通过相位角识别各个交叉点。 使用高频减少耦合阻抗，特别是当存在湿气或湿度高时。 高频信号通过笔的点与笔恰好靠近的所选择的交叉点之间的静电耦合来拾取。 拾取信号被调幅以增加其强度，然后反馈到所识别的交叉点，从而增强拾取信号的强度。 增强信号被再次采集和解调，以恢复单独标识由拾取装置选择的交叉点的信号的原始相移特性。 然后，解调后的信号被转换成由预先存在的电传传送系统使用的交叉点识别信号的形式。