公开(公告)号：JPS61261779A

公开(公告)日：1986-11-19

申请号：JP10067285

申请日：1985-05-14

Applicant: IBM

Inventor： IIDA HIDEAKI ,  MAMIYA TAKESHIGE ,  MORIMOTO YUTAKA

IPC: G06F3/153 ,  G06T11/20 ,  G09G1/08 ,  G09G1/10 ,  G09G5/20

Abstract: Assuming that a given equation representing a quadratic curve is:the method for generating quadratic curve signals disclosed herein repeatedly selects a point close to F (x, y) = 0 in only one of either the region of F (x, y) ≧ 0 or the region of F (x, y)

公开(公告)号：JP2001228841A

公开(公告)日：2001-08-24

申请号：JP2000035706

申请日：2000-02-14

Applicant: IBM

Inventor： MAMIYA TAKESHIGE ,  YAMAUCHI KAZUSHI ,  TOMOOKA TAKATOSHI

IPC: G06F3/153 ,  G06F3/048 ,  G09G3/20 ,  G09G5/00 ,  G09G5/14 ,  H04L1/00 ,  H04L29/06 ,  H04L29/14 ,  H04N5/40 ,  H04N5/44 ,  H04N7/173

Abstract: PROBLEM TO BE SOLVED: To readily recognize a transfer error of a header part, including an ID at transfer of data from the host side, to the display side in a packet form. SOLUTION: In an image display method, which transfers images between a host side 10 executing an application and a display side 30 via a digital interface 50, the host side 10 manages image data as one set according to sub-areas, into which a display area on the display side 30 is divided, with respect to windows which are areas having a meaning collectively in an image space to which the application pay attention, and this set of image data is taken as one unit of packets, and sequence information indicating the sequence of package is added to transfer image data to the display side 30, and display side 30 expands transferred image data on a panel memory 36 and detects the dropout of packets, on the basis of sequence information, and the host side 10 recognizes the condition of missing packet via control signal line 60.

公开(公告)号：JP2001166912A

公开(公告)日：2001-06-22

申请号：JP34146299

申请日：1999-11-30

Applicant: IBM

Inventor： YAMAUCHI KAZUSHI ,  MAMIYA TAKESHIGE ,  TOMOOKA TAKATOSHI

IPC: G06F3/153 ,  G06F3/048 ,  G06F3/14 ,  G06F13/00 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G09G5/393

Abstract: PROBLEM TO BE SOLVED: To realize the transfer of picture data constituted of a large capacity from a host to the direction of a display and the transfer of an extremely small amount of data in the opposite direction with the maximum efficiency. SOLUTION: In this picture displaying method for transferring a picture between a host side 10 for executing an application and a display side 30 for operating picture display, picture data belonging to a window being an area having meanings as a group in a picture space recognized by the application are managed as a group by the host side 10 according to sub-areas obtained by dividing the display area of the display side 30, and the picture data as a group are transferred through a digital I/F 50 to the display side 30 as one packet unit, and the transferred picture data are developed to a panel memory 36 of the display side 30, and the situation of the transfer error is captured by the window unit, and the situation of the transfer error is captured through a control signal line 60 by the host side 10.

公开(公告)号：JP2000075943A

公开(公告)日：2000-03-14

申请号：JP25754298

申请日：1998-08-26

Applicant: Hitachi Ltd ,  Internatl Business Mach Corp ,  インターナショナル・ビジネス・マシーンズ・コーポレイション ,  株式会社日立製作所

Inventor： KAWABATA KENJI ,  OKADA TAKASHI ,  IKEDA RYUICHI ,  SUGINO MOTOHIRO ,  MAMIYA TAKESHIGE ,  SUZUKI KEIJI

IPC: H05B41/282 ,  G05F1/56 ,  H02M3/00

Abstract: PROBLEM TO BE SOLVED: To obtain a power unit which has excellent power efficiency. SOLUTION: This power unit has a 1st power source part including a chopping transistor 2, a 2nd power source part including a chopping transistor 18, and a discharge lamp turning-on circuit part including a chopping transistor 35. In this case, a current detector 31 detects the current flowing to a load resistance 8 and a voltage comparator 32 compares it with a reference voltage 33. When the load current is below a specific level, a transistor 30 is turned off with the output of the voltage comparator 32. Consequently, a control circuit of the 2nd power source part and a driving circuit of the chopping transistor 18 are powered off and the 2nd power source part stops operating. Thereafter, the load resistance 8 at light load time is supplied power by the 1st power source part.

Abstract translation: 要解决的问题：获得具有优异的功率效率的功率单元。 解决方案：该电源单元具有包括斩波晶体管2的第一电源部分，包括斩波晶体管18的第二电源部分和包括斩波晶体管35的放电灯导通电路部分。在这种情况下，电流检测器 31检测流到负载电阻8的电流，电压比较器32将其与参考电压33进行比较。当负载电流低于特定电平时，晶体管30随着电压比较器32的输出而截止。因此， 第二电源部分的控制电路和斩波晶体管18的驱动电路断电，第二电源部分停止工作。 此后，轻负载时的负载电阻8由第一电源部供电。