DOT-CLOCK FORMATION DEVICE FOR LIQUID CRYSTAL DISPLAY

    公开(公告)号:JPH07110667A

    公开(公告)日:1995-04-25

    申请号:JP24509893

    申请日:1993-09-30

    Applicant: IBM

    Abstract: PURPOSE: To generate the dot clock of a liquid crystal display device from a horizontal synchronizing signal with little skew. CONSTITUTION: The function of PSS is divided into three. One of them is means 29, 36 and 34 for obtaining a specific frequency. These means supply voltage to VCO 30 from DAC(digital-analog converter) 29 of a latch type. The horizontal synchronizing signal is inversely calculated from a finally generated dot clock to increase/reduce the value of DAC 29 based on an error between this calculated horizontal synchronizing signal and an actual horizontal synchronizing signal. Correction by this increase/reduction is executed with the timing of vertical synchronization, e.g. The second one of the function is a synchronizing means 34 which adds a signal corresponding to an error between the actual horizontal synchronizing signal and the phase with a dot clock to a signal from DAC 29 to control the phase of the dot clock. Third one is PLL means 31 and 32 generating the dot clock based on the signal of the prescribed frequency.

    IMAGE DISPLAY SYSTEM, HOST DEVICE, IMAGE DISPLAY DEVICE, AND IMAGE DISPLAY METHOD

    公开(公告)号:JP2001166761A

    公开(公告)日:2001-06-22

    申请号:JP34146199

    申请日:1999-11-30

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To optimize a job amount of a whole system including graphic chips by distributing processing to a host side and a panel side. SOLUTION: This is a image display system which is provided with a host side 10 for executing applications, and a panel side 50 connected to this host side 10, and which is intended for displaying an image onto this panel side 50, and when requesting the panel side 50 to display the image, this host side 10 transfers image data before expanding the image to the panel side 50, and the panel side 50 is provided with panel memory 52 for image expansion, and expands the image in the panel memory 52 based on the image data transferred from the host side 10 and also displays the image expanded in the panel memory 52 on a panel 55.

    Image display system and image display device
    5.
    发明专利
    Image display system and image display device 有权
    图像显示系统和图像显示装置

    公开(公告)号:JP2006301659A

    公开(公告)日:2006-11-02

    申请号:JP2006159749

    申请日:2006-06-08

    Abstract: PROBLEM TO BE SOLVED: To realize, with maximum efficiency, a transfer of image data consisting of a large capacity in a display direction from a host and a transfer of the data of the amount much smaller than the same in an opposite direction.
    SOLUTION: The image display system is equipped with a host side 10 to execute an application, a display side 30 connected to the host side 10, and an interface connecting the host side 10 and the display side 30, and functions to display images on the display side 30. The interface is equipped with a digital I/F50 to execute the data transfer of the large capacity to the display side 30 from the host side 10 and a control signal line 60 for executing the data transfer of the small capacity which is much smaller than the capacity of the first interface but is not zero, to the host from the display. The digital I/F50 packetizes the data and transfers the packet data.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题:为了最大限度地实现从主机向显示方向大容量传输的图像数据的传送和相对于相反方向的数据量远小于其数量的数据的传送 。 解决方案:图像显示系统配备有执行应用的主机侧10,连接到主机侧10的显示侧30以及连接主机侧10和显示侧30的接口,并且用于显示 显示面30的图像。接口配备有数字I / F50,以从主机侧10执行大容量的数据传输到显示侧30,以及用于执行小型数据的数据传送的控制信号线60 从显示器到主机的容量比第一接口的容量小得多但不是零的容量。 数字I / F50打包数据并传送数据包数据。 版权所有(C)2007,JPO&INPIT

    DISCHARGE LAMP LIGHTING DEVICE
    7.
    发明专利

    公开(公告)号:JPH0845675A

    公开(公告)日:1996-02-16

    申请号:JP18206494

    申请日:1994-08-03

    Applicant: HITACHI LTD IBM

    Abstract: PURPOSE: To provide an electric current feedback type discharge lamp lighting apparatus which is hardly affected, with floating capacity and applicable for any number of discharge lamps by installing a circuit which detects discharge lamps to be connected and switches impedance of a discharge tube electric current detector based on the number of the lamps. CONSTITUTION: In a third discharge tube 24 connected with two discharge tubes 4, 23, an electric current at 3I A flows in an impedance apparatus 32, and since transistors 51, 45 are turned on, the combined resistance R of the resistors 41-43 of discharge tube electric current detectors becomes R/3 Ω and the voltage between both ends becomes IR V and electric current flowing in each discharge tube becomes I A. Consequently, by increasing the number of the tube electric current detection resistors and transistors of electric current terminals, control signal wires, feedback signal wires, discharge tube current terminals, and the tube electric current detectors 32 and also the number of transistors and resistors in an impedance switching signal generator 33, the discharge tube current for each discharge tube can be kept constant regardless of the number of the discharge tubes.

    IMAGE DISPLAY SYSTEM, HOST DEVICE, AND IMAGE DISPLAY DEVICE

    公开(公告)号:JP2006350368A

    公开(公告)日:2006-12-28

    申请号:JP2006194659

    申请日:2006-07-14

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To optimize the workload of the whole system including a graphics chip by decentralizing processing to a host side where a plurality of applications are executed and a panel side. SOLUTION: An image processing system comprises the host side 10 which executes the plurality of applications differing in requested display characteristic and data amount, the panel side 50 which displays images, and a digital interface (I/F) line 49 which transfers image data from the host side 10 to the panel side 50. The digital interface (I/F) line 49 changes a transfer format according to an application that the host is to execute and transfers the image data to the panel side 50, and the panel side 50 expands the image data transferred through the digital interface (I/F) line 49 in a panel memory 52 for expansion and then displays an image on the panel 55. COPYRIGHT: (C)2007,JPO&INPIT

    HOST DEVICE, IMAGE DISPLAY DEVICE, IMAGE DISPLAY SYSTEM, IMAGE DISPLAY METHOD, PANEL ATTRIBUTE READING METHOD, AND IMAGE DISPLAY CONTROL METHOD

    公开(公告)号:JP2001166759A

    公开(公告)日:2001-06-22

    申请号:JP34146099

    申请日:1999-11-30

    Applicant: IBM

    Abstract: PROBLEM TO BE SOLVED: To permit the same operation irrespective of the number of panels connected, even under a multi-panel environment. SOLUTION: This is a host device 10 for transferring image signals to plural panels connected, and comprises a panel ID recognition part 22 for recognizing a panel ID regarding a single panel 30 or a group of the prescribed number of panels 30 as a singular unit, respectively, a window ID allotment part 25 for allotting each window ID to the window as a transmission processing unit of the image signals, a control signal output part 24 for outputting control signal to set the window ID to be processed to the panel ID as a reading object at the time of transferring the image signals, and an image signal transmission part 26 for adding the window ID allotted by the window ID allotment part 25 to the image signals and transferring them.

    METHOD AND EQUIPMENT FOR LIQUID CRYSTAL DISPLAY

    公开(公告)号:JPH08166778A

    公开(公告)日:1996-06-25

    申请号:JP31085894

    申请日:1994-12-14

    Applicant: IBM

    Inventor: MAMIYA TAKESHIGE

    Abstract: PURPOSE: To provide a liquid crystal display method and device having the capability of showing an image with an arbitrary scale factor and smoothly indicating the contour part of an enlarged image, regarding a method and a device for the enlarged indication of an image in a liquid crystal display device capable of showing a color image. CONSTITUTION: In the display panel of a color liquid crystal display device having a matrix of an array of display dots with three sub-pixels laid side by side for showing R (red) G (green) and B (blue), three types of original brightness data along the direction of a row for indication in the three pixels are extended and weighted by the preset value, thereby forming enlarged display brightness data. Then, the enlarged display brightness data are sequentially outputted to the sub-pixels, thereby indicating an original image in such state as enlarged along the direction of the row of the display panel.

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