公开(公告)号：WO1993018502A1

公开(公告)日：1993-09-16

申请号：PCT/US1993001772

申请日：1993-02-26

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  KENNEDY, John, R. ,  ANDO, Kenshiro

IPC: G09G05/40

CPC classification number: G09G5/40

Abstract: A method and apparatus which allows U.S. software applications which write directly to the video text RAM area to run in a purely graphics mode operating system environment such as Japanese mode of DOS/V. Memory management software includes an option which reserves main memory at system initialization for receiving the text RAM area in IBM PC compatible systems. A software driver periodically checks to determine if anything has changed in the text RAM area using the ''dirty'' bits associated with the page table entries in the 386 paging mechanism. If new data has been written to this area, the driver converts the ASCII data written to this area to graphics based characters which are then displayed onto the computer screen.

Abstract translation: 允许直接写入视频文本RAM区域的美国软件应用程序在纯图形模式操作系统环境（例如DOS / V的日文模式）下运行的方法和装置。 内存管理软件包括一个选项，用于在系统初始化时保留主内存，以便在IBM PC兼容系统中接收文本RAM区域。 软件驱动程序定期检查使用与386页面寻呼机制中的页表项相关联的“脏”位来确定文本RAM区域中是否有变化。 如果新的数据已写入该区域，则驱动程序将写入该区域的ASCII数据转换为基于图形的字符，然后显示在计算机屏幕上。

公开(公告)号：WO1993015412A1

公开(公告)日：1993-08-05

申请号：PCT/US1993000372

申请日：1993-01-20

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  HESS, Randall, L. ,  COOPER, Patrick, R. ,  INTERIANO, Armando ,  FREIMAN, Joseph, F.

IPC: G01R31/36

CPC classification number: G01R31/3648 ,  G01R19/16542 ,  G01R31/006 ,  G01R31/361 ,  G01R31/3624 ,  G01R31/3655

Abstract: A battery charge controller and fuel gauge which accurately monitors the voltage, temperature, and charge and discharge current of a rechargeable battery, and calculates the battery's charge capacity and charge level. Each time the battery is fully discharged, any calculated charge level remaining is divided by two and subtracted from the previously calculated charge capacity. When the battery is fully charged, the charge level is set equal to the charge capacity. During subsequent charge and discharge, the current is converted to a coulomb count and added or subtracted from the charge level to maintain an accurate charge level. Fast charge inefficiency due to temperature is considered by subtracting a temperature proportional factor before the charge level of the battery is updated. The charge level, voltage and temperature are used to determine the optimal fast charge termination point to achieve full charge and prevent temperature abuse and overcharge. A fast charge is applied only if the battery is within proper voltage and temperature ranges. The charge controller includes a microcontroller circuit within the same battery pack as the battery, which is powered by the battery when AC power is unavailable. The microcontroller circuit consumes very little power, measures circuit errors to assure data accuracy, times periods of self-discharge and updates the charge level accordingly. The microcontroller circuit also includes memory to store the battery charge information and a communication port to provide the charge information to a computer system connected to the battery pack.

公开(公告)号：WO1993014468A1

公开(公告)日：1993-07-22

申请号：PCT/US1993000622

申请日：1993-01-13

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  ALBERS, Thomas, M. ,  EBERST, John, V. ,  FONTENOT, Darwin ,  PYRA, Richard, L. ,  WELKER, Mark, W. ,  WOOD, Paul, B. ,  BRESENHAM, Jack, E.

IPC: G06F15/72

CPC classification number: G06T11/203

Abstract: Line draw circuitry receives parameters defining first and second endpoints of a line and calculates line parameters based on the first and second endpoints. The line parameters may be modified prior to drawing a line based on the calculated and modified parameters.

Abstract translation: 线绘制电路接收定义线的第一和第二端点的参数，并基于第一和第二端点计算线路参数。 在根据计算和修改的参数绘制线之前，可以修改线参数。

公开(公告)号：WO1993013475A1

公开(公告)日：1993-07-08

申请号：PCT/US1992011283

申请日：1992-12-18

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  NEUFELD, E., David

IPC: G06F03/06

CPC classification number: G06F11/1076 ,  G06F3/0601 ,  G06F2003/0692 ,  G06F2211/1026 ,  G11B20/1833

Abstract: A method and apparatus for improving disk performance in a disk array subsystem. A nonuniform mapping scheme is used wherein the disk array includes regions having varying sizes of data stripes. The disk array includes a region comprised of data stripes having a stripe size that corresponds to the size of the internal data structures frequently used by the file system, in addition to a region comprised of a number of data stripes having a larger stripe size which are used for general data storage. When a write operation occurs involving one of the data structures, the data structure is preferably mapped to the small stripe region in the disk array having a size which matches the size of the data structure. In this manner, whenever a file system data structure is updated, the operation is a full stripe write. This removes the performance penalty associated with partial stripe write operations.

Abstract translation: 一种用于提高磁盘阵列子系统中的磁盘性能的方法和装置。 使用不均匀的映射方案，其中盘阵列包括具有不同大小的数据条带的区域。 磁盘阵列除了包括具有较大条带大小的多个数据条带的区域之外，还包括由具有对应于文件系统频繁使用的内部数据结构的大小的条带大小的数据条带组成的区域。 用于一般数据存储。 当涉及其中一个数据结构的写入操作发生时，优选将数据结构映射到具有与数据结构大小相匹配的大小的磁盘阵列中的小区域。 以这种方式，每当更新文件系统数据结构时，操作是完整的条带写入。 这消除了与部分条带写入操作相关联的性能损失。

公开(公告)号：WO1996016367A3

公开(公告)日：1996-05-30

申请号：PCT/US1995015153

申请日：1995-11-21

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  MERKEL, Harold, S.

IPC: G06F01/16

公开(公告)号：WO1994027826A1

公开(公告)日：1994-12-08

申请号：PCT/US1994005520

申请日：1994-05-13

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  HAYES, Donald, J.

IPC: B41J02/16

CPC classification number: B41J2/14209 ,  B41J2/1609 ,  B41J2/1632 ,  Y10T29/42 ,  Y10T29/49401

Abstract: A high density ink jet printhead (10) is fabricated by first forming a body subassembly (12) comprising a piezoelectric main block (13) having metallic layers (22, 24) disposed on opposite first and second sides (14, 16) thereof, and piezoelectric sheets (26, 28) secured to front portions of the metallic layers. Using a precision dicing saw, a first spaced series of parallel grooves, longitudinally extending between the front and rear ends of the subassembly, are cut into the first side of the subassembly. The subassembly is then placed, groove side down, in a support fixture having mirrors secured thereto and positioned adjacent the opposite ends of the grooves. Reflections of opposite groove ends in the mirrors are then used as line-of-sight guides to position the saw which is then used to form a second series of grooves in the second subassembly side which are in precise lateral alignment with the first series of grooves. Covering blocks (34, 36) are then secured to the opposite piezoelectric sheets (26, 28) over the open outer sides of the grooves and form therewith interior ink receiving channels bounded along their lengths by piezoelectrically deflectable side wall segments of the printhead body. The rear ends of the channels are sealed off, ink supply conduits (64) are communicated with rear end portions of the channels, and a plate member (58) having first and second spaced series of ink discharge orifices (60, 62) respectively communicated with the front ends of the first and second series of interior channels is secured over the front end of the printhead body.

Abstract translation: 通过首先形成包括设置在其相对的第一和第二侧（14,16）上的金属层（22,24）的压电主块（13）的主体子组件（12）来制造高密度喷墨打印头（10） 以及固定到金属层的前部的压电片（26,28）。 使用精密切割锯，在子组件的前端和后端之间纵向延伸的第一间隔开的一系列平行凹槽切割成子组件的第一侧。 然后将该子组件向下放置在具有固定到其上并且邻近凹槽的相对端定位的镜子的支撑固定件中。 然后将反射镜中相对的凹槽端部的反射用作定位导轨，以定位锯，然后将其用于在第二子组件侧中形成与第一系列凹槽精确横向对准的第二系列凹槽 。 然后，覆盖块（34,36）固定在凹槽的开放的外侧上的相对的压电片（26,28）上，并与其形成沿其长度限定的内部油墨接收通道，该压缩片通过打印头主体的可压电偏转的侧壁段。 通道的后端被密封，供墨管道（64）与通道的后端部分连通，并且具有分别连通的第一和第二间隔的一系列喷墨孔（60,62）的板件（58） 其中第一和第二系列内部通道的前端固定在打印头主体的前端上。

公开(公告)号：WO1994026524A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005132

申请日：1994-05-04

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  STORTZ, James, L. ,  WALLACE, David, B.

IPC: B41J02/045

CPC classification number: B41J2/14209 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588

Abstract: A digital driver (12, 54) for an ink jet printhead (10) and an associated method for selectively applying voltage to a piezo-electric sidewall actuator (34) of the ink jet printhead. The digital driver (54) includes positive (V+) and negative voltage sources (V-), a first switching element (56) having a first control input (60), a first voltage supply input (62) connected to the positive voltage source (V+), and a first ouput (64), and a second switching element (58) having a second control input (61), a second voltage supply input (63) connected to the negative voltage source (V-), and a second output (65) connected to the first output (64) to provide a single output (28) connected to the piezoelectric sidewall actuator (34). By asserting the first control input (66) for a first time period, the first switching element (56) generates a positive voltage pulse (70) at the single output to displace the sidewall actuator (34) from a rest position to a first position. Next, by simultaneously deasserting the first control input (66) and asserting the second control input (68), the second switching element (58) generates a negative voltage pulse (74) at the single output to displace the sidewall actuator (34) from the first position, past the rest position, to a second position. Next, by deasserting the second control input (68), the sidewall actuator (34) passively returns to the rest position. The return to the rest position may be assisted by discharging the printhead (10) after deassertion of the second control input (68), by re-applying the first voltage for a second, shorter, time period to actively drive the sidewall actuator (34) towards the rest position, or by both.

Abstract translation: 一种用于喷墨打印头（10）的数字驱动器（12,54）和用于选择性地向喷墨打印头的压电侧壁致动器（34）施加电压的相关方法。 数字驱动器（54）包括正（V +）和负电压源（V-），具有第一控制输入（60）的第一开关元件（56），连接到正电压源的第一电压供应输入 （V +）和第一输出（64）以及具有第二控制输入（61）的第二开关元件（58），连接到负电压源（V-）的第二电压供给输入端（63） 第二输出（65）连接到第一输出端（64），以提供连接到压电侧壁致动器（34）的单个输出（28）。 通过在第一时间段内确定第一控制输入（66），第一开关元件（56）在单个输出处产生正电压脉冲（70），以使侧壁致动器（34）从静止位置移动到第一位置 。 接下来，通过同时解除第一控制输入（66）和断言第二控制输入（68），第二开关元件（58）在单个输出处产生负电压脉冲（74），以使侧壁致动器（34）从 第一个位置，通过休息位置，到第二个位置。 接下来，通过解除第二控制输入（68），侧壁致动器（34）被动地返回到静止位置。 可以通过在第二个较短的时间周期之后重新施加第一电压来主动驱动侧壁致动器（34）来辅助通过在第二控制输入端（68）解除驱动之后将打印头（10） ）朝向休息位置，或由两者。

公开(公告)号：WO1994026523A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005066

申请日：1994-05-03

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  STORTZ, James, L. ,  WALLACE, David, B.

IPC: B41J02/045

CPC classification number: B41J2/04581 ,  B41J2/04541 ,  B41J2/14209 ,  B41J2202/10

Abstract: A switched digital drive system is used to actuate an ink jet printhead (10) having a spaced, parallel series of internal ink receiving channels (32) opening outwardly at front ends thereof through ink discharge orifices (24) formed in the printhead body (14). The channels are laterally bounded by a spaced series of piezoelectrically deflectable internal sidewall sections of the printhead body interdigitated with the channels. The drive system (12) includes a series of electrical actuation leads (28) each connected to a different one of the sidewall sections (34a), and dual transistor switch structures connected in the leads with each switch, in turn, connected to positive and negative DC voltage sources. To actuate a selected channel, the switches associated with its opposite bounding sidewall sections are operated in a manner sequentially (1) deflecting the sidewall sections outwardly away from initially undeflected positions thereof by imposing constant, opposite polarity voltages thereon, (2) reversing the polarities of the constant voltages to deflect the sidewall sections into the channel, and then (3) imposing a series of voltage pulses of sequentially opposite polarities on each of the inwardly deflected sidewall sections to controllably return them to their initial undeflected positions.

Abstract translation: 切换数字驱动系统用于致动喷墨打印头（10），喷墨打印头（10）具有间隔开的平行的一系列内部油墨接收通道（32），其通过形成在打印头主体（14）中的喷墨孔（24）的前端向外打开 ）。 这些通道由与通道相互指向的打印头主体的间隔开的一系列可压电偏转的内部侧壁部分横向界定。 驱动系统（12）包括一系列电致动引线（28），每个连接到不同的一个侧壁部分（34a），并且每个开关连接到引线中的双晶体管开关结构又连接到正极和 负直流电压源。 为了致动所选择的通道，与其相对的边界侧壁部分相关联的开关以顺序地操作（1）通过在其上施加恒定的相反极性电压使侧壁部分偏离其初始未偏转位置，（2）使极性反转 的恒定电压以将侧壁部分偏转到通道中，然后（3）在每个向内偏转的侧壁部分上施加一系列具有相反极性的电压脉冲，以可控制地将它们返回到它们的初始未偏转位置。

公开(公告)号：WO1994026521A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005060

申请日：1994-05-04

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  WILLIAMSON, Ralph, K. ,  STORTZ, James, L.

IPC: B41J02/045

CPC classification number: B41J2/04581 ,  B41J2/04588 ,  B41J2202/10

Abstract: A digital driver (12) for an ink jet printhead (10) and an associated method for selectively applying voltage to a piezoelectric sidewall actuator of the printhead. The digital driver includes positive, negative and neutral voltage sources, a first switching element (56) having a first control input (60), a first voltage supply input (62) connected to the positive voltage source and a first output (64), a second switching element (58) having a second control input (61), a second voltage supply input connected to the negative voltage source and a second output (65), and a third switching element (70) having a third control input (71), a third voltage supply input connected to the neutral voltage source and a third output (75). The first, second and third outputs are connected together to provide a common output (28) for connection to the piezoelectric sidewall actuator. By asserting the first control input for a first time period, the first switching element (56) generates a positive voltage pulse at the common output to displace the sidewall actuator from a rest position to a first position. Next, by simultaneously deasserting the first control input and asserting the second control input, the second switching element (58) generates a negative voltage pulse at the common output to displace the sidewall actuator from the first position, past the rest position, to a second position. Finally, by deasserting the second control input and asserting the third control input, a path to ground potential is provided at the common output, thereby driving the return of the sidewall actuator to the rest position.

Abstract translation: 一种用于喷墨打印头（10）的数字驱动器（12）以及用于向打印头的压电侧壁致动器选择性地施加电压的相关方法。 数字驱动器包括正，负和中性电压源，具有第一控制输入（60）的第一开关元件（56），连接到正电压源的第一电压供应输入端（62）和第一输出端（64）， 具有第二控制输入（61）的第二开关元件（58），连接到所述负电压源的第二电压源输入端和第二输出端（65），以及具有第三控制输入端（71）的第三开关元件 ），连接到中性电压源的第三电压电源输入端和第三输出端（75）。 第一，第二和第三输出端连接在一起以提供用于连接到压电侧壁致动器的公共输出端（28）。 通过在第一时间段内确定第一控制输入，第一开关元件（56）在公共输出端产生正电压脉冲，以将侧壁致动器从静止位置移位到第一位置。 接下来，通过同时解除第一控制输入并断言第二控制输入，第二开关元件（58）在公共输出端产生负电压脉冲，以将侧壁致动器从第一位置移动到静止位置， 位置。 最后，通过解除第二控制输入并断言第三控制输入，在公共输出处提供接地电位的路径，从而驱动侧壁致动器返回到静止位置。

公开(公告)号：WO1994025279A1

公开(公告)日：1994-11-10

申请号：PCT/US1994005103

申请日：1994-04-28

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  HAYES, Donald, J. ,  WALLACE, David, B.

IPC: B41J02/16

CPC classification number: B41J2/04581 ,  B23K26/389 ,  B23K2103/42 ,  B23K2103/50 ,  B41J2/0458 ,  B41J2/04593 ,  B41J2/14209 ,  B41J2/1433 ,  B41J2/2128

Abstract: A spot size modulatable, drop-on-demand type ink jet printhead (32) and associated methods for ejecting volume modulatable droplets of ink therefrom. The ink jet printhead (32) includes a main body portion (34) having first and second ink carrying channels (50a, 50b, 50c, 50d) longitudinally extending therethrough and a cover plate (42) fixedly mounted thereto. Formed in the cover plate (42) is a tapered orifice (48a, 48b) which extends from first and second openings (50, 52) along a back side surface to a third opening (54) along a front side surface thereof. The cover plate (42) is mounted to the main body portion (34) such that the first opening (50) is in communication with the first ink carrying channel (50a, 50c) and the second opening (52) is in communication with the second ink carrying channel (50b, 50d). The ink jet printhead (32) further includes first and second actuators (50a, 50b, 50c, 50d) coupled with the first and second ink carrying channels respectively. Volume modulatable droplets of ink may be ejected from the ink jet printhead (32) by simultaneously applying a voltage pulse having a selected magnitude to the first ink carrying channel and a voltage pulse having a magnitude ranging between zero and the selected magnitude to the second ink carrying channel. Alternately, volume modulatable droplets of ink may be ejected from the ink jet printhead by sequentially applying a voltage pulse having a selected time duration to the first ink carrying channel and a voltage pulse having a time duration ranging between zero and the selected time duration to the second ink carrying channel.

Abstract translation: 点尺寸可调节按需喷墨打印头（32）和用于从其中排出油墨的体积可调节液滴的相关方法。 喷墨打印头（32）包括：主体部分（34），其具有纵向延伸穿过的第一和第二墨水容纳通道（50a，50b，50c，50d）和固定地安装在其上的盖板（42）。 在盖板（42）上形成有从第一和第二开口（50,52）沿其前侧表面沿着背侧表面延伸到第三开口（54）的锥形孔口（48a，48b）。 盖板（42）安装在主体部分（34）上，使得第一开口（50）与第一墨水输送通道（50a，50c）连通，第二开口（52）与 第二墨水输送通道（50b，50d）。 喷墨打印头（32）还包括分别与第一和第二墨水输送通道耦合的第一和第二致动器（50a，50b，50c，50d）。 可以通过将具有选定幅度的电压脉冲同时施加到第一墨水承载通道并且具有范围在零和所选大小之间的幅度的电压脉冲到第二墨水从喷墨打印头（32）喷射墨水的体积可调节液滴 携带通道。 或者，可以通过将具有选定持续时间的电压脉冲顺序地施加到第一墨水携带通道和具有从0到所选择的持续时间之间的持续时间范围的电压脉冲，从墨喷射打印头喷射体积可调节的墨水滴 第二墨水通道。