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1.发明授权
公开(公告)号：US4788484A
公开(公告)日：1988-11-29
申请号：US89688
申请日：1987-08-26
摘要： The invention is for an improved method and apparatus of driving a stepper motor with multiple voltages. A first voltage is applied to the step motor winding for a driving phase, and a second higher voltage is applied to the same motor winding during the same driving phase just prior to and substantially until the time that the winding is de-energized.
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公开(公告)号：US06334165B1
公开(公告)日：2001-12-25
申请号：US09436107
申请日：1999-11-08
IPC分类号： G06F1200
CPC分类号： G06F12/0684 , G11C16/08 , G11C2216/30
摘要： A method, system, and computer program product are disclosed for determining the address type of a serial EEPROM in an electronic system. The method includes reading data from at least one location of the EEPROM for a first time and saving the data for future reference. Thereafter, a sequence of transactions is executed that alters the contents of the EEPROM in a prescribed manner if the EEPROM is of a first type. The sequence of transaction leaves the EEPROM in an unaltered state if the EEPROM is of a second type. Data is then read from at least one location of the EEPROM for a second time. The location of the data read from the EEPROM the second time is the same as the location of the data read the first time if the EEPROM is of the first type. The data read the first time and the data read the second time are then compared. If it is determined that the data read the second time does not differ in the prescribed manner from the data read the first time, the type of the EEPROM is identified as the second type. In one embodiment, the indicate steps are repeated to achieve additional assurance that type of the EEPROM is the first type if it is determined that the data read the second time differs in the prescribed manner from the data read the first time. In one embodiment, reading data from the EEPROM for the first time includes, writing an initial byte to the EEPROM for a first time to set the address pointer to a known state if the EEPROM is of the first type. In one embodiment, the sequence of transactions include writing two bytes to the EEPROM, wherein the value of the first of the two bytes is the value of the initial byte written to the EEPROM. In one embodiment, the method includes, prior to reading data from the EEPROM for the first time writing two bytes to the EEPROM if is determined that the EEPROM is configured with an address type indicator field, where the two bytes comprise the 2-byte address of the indicator field in an EEPROM of the second type. In this embodiment, the two bytes of address type indicator information are read from the EEPROM. The contents of the two bytes are indicative of the address type of the EEPROM.
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公开(公告)号：US4732501A
公开(公告)日：1988-03-22
申请号：US852187
申请日：1986-04-15
申请人： Tim V. Angst , Joel G. Goodwin
发明人： Tim V. Angst , Joel G. Goodwin
CPC分类号： B41J15/042 , B41J11/36 , B41J11/48 , Y10S400/902
摘要： A method and apparatus for loading a web into a printer is disclosed. The apparatus has a normal mode for moving the web in normal operation and a load assist mode for operating at a slower than normal rate for loading the web into the printer. The printer comprises means for recording information on the web including a platen attached to the printer and a print head for generating characters. The print head is disposed in a predetermined spaced relationship from the platen to define a print station therebetween. A means for engaging and moving the web through the print station and signal means for generating normal and load assist mode signals are provided. Means for driving the means for engaging and moving the web is responsive to the normal mode signal from the signal means for operating during normal printing operation and responsive to the load assist mode signal from the signal means for operating at a slower than normal rate to facilitate alignment and engagement of the web with the means for engaging and moving the web during web loading operations.
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公开(公告)号：US4680524A
公开(公告)日：1987-07-14
申请号：US852255
申请日：1986-04-15
申请人： Phuc K. Do , Joel G. Goodwin , Nicholas J. Krull
发明人： Phuc K. Do , Joel G. Goodwin , Nicholas J. Krull
摘要： This invention relates to a mechanism for positioning an output member of a mechanical system and in particular a mechanical system that has backlash present. The mechanism has a step motor, regulated by control means, connected to the output member by a mechanical transmission. The control means delivers units of electrical energy to the step motor in response to a number of steps specified to be moved. The control means also has means for detecting whether the step to be performed by the step motor is a single remaining step or single step only. The control means responds to detection of the single remaining step or detection of the single step only by applying a unit of energy to the step motor at a rate that is substantially slower than the rate that would be applied for the other steps.
摘要翻译： 本发明涉及一种用于定位机械系统的输出构件的机构，特别是涉及存在齿隙的机械系统。 该机构具有由控制装置调节的步进电机，通过机械传动连接到输出构件。 控制装置响应于指定要移动的多个步骤而向步进电机传送电能单元。 控制装置还具有用于检测由步进电动机执行的步骤是单步还是单步的装置。 控制装置仅通过以比用于其它步骤的速率更慢的速率向步进电机施加一单位能量来响应单个剩余步骤的检测或单步骤的检测。
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公开(公告)号：US5862500A
公开(公告)日：1999-01-19
申请号：US633130
申请日：1996-04-16
申请人： Joel G. Goodwin
发明人： Joel G. Goodwin
摘要： A vehicle trip recording apparatus collects trip data for manipulation by a separate computer. The computer software contains all the required controls and data manipulation programs for the trip recording device. The trip recording device contains only the hardware to collect and save distance pulses, current time and date, to talk with the computer, and a two button command interface. Of the two button command interface, one of the buttons selects between automatic or manual mode. The second button is a push type and performs the start/stop trip function when the first button is in the manual position. When the first button is in the automatic position, the second button preforms the start/stop calibrate function. Once the trip data has been downloaded into the computer, the trip data can be formatted, printed and saved with the separate computer.
摘要翻译： 车辆行驶记录装置收集行驶数据以供单独的计算机操纵。 计算机软件包含所有必需的控制和数据操作程序，用于行程记录装置。 旅行记录装置仅包含收集和保存距离脉冲的硬件，当前时间和日期，与计算机通话，以及两个按钮命令界面。 在两个按钮命令界面中，其中一个按钮在自动或手动模式之间进行选择。 第二个按钮是一个推式，当第一个按钮处于手动位置时，执行起动/停止跳闸功能。 当第一个按钮处于自动位置时，第二个按钮预先设置启动/停止校准功能。 一旦行程数据已经下载到计算机中，行程数据可以用单独的计算机进行格式化，打印和保存。
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