-
公开(公告)号：JPH07297691A
公开(公告)日：1995-11-10
申请号：JP8845494
申请日：1994-04-26
Applicant: IBM
Inventor： IGAMI SHINICHI , ASANO TAKESHI
Abstract: PURPOSE: To suppress EMI radiation of frequencies by introducing delay times which are expected to be effective for EMI radiation frequencies. CONSTITUTION: A delay generator 10 is provided for selectively changing the delay time. Such a delay generator is connected to plural input data lines 20 and composed of a delay means, having plural delay routes for generating mutually different lengths of plural delay times, a register for holding the digital value of prescribed bits, and a selecting means for selecting one of delay routes and interposing it on the signal line corresponding to the digital value.
-
公开(公告)号：JP2002074379A
公开(公告)日：2002-03-15
申请号：JP2000253352
申请日：2000-08-24
Applicant: IBM
Inventor： IGAMI SHINICHI
Abstract: PROBLEM TO BE SOLVED: To provide a data display method, a computer system and a computer readable recording medium. SOLUTION: In the data display method for the computer system provided with a computer means 2 provided with a database DB, a display means 3 and a pointer means 4 for inputting a position on the display means 3, this method is provided with a step for performing main display by reading data from the database DB and plotting these data on the display means 3 corresponding to a first variable, a step for judging whether an entry from the pointer means 4 is a request to plot data related to a second variable or not, a step for judging position coordinates on the display means 3 concerning the main display on the display means 3, and a step for retrieving data related to the position coordinates from the database DB.
-
公开(公告)号：JPH0879312A
公开(公告)日：1996-03-22
申请号：JP20509394
申请日：1994-08-30
Applicant: IBM
Inventor： IGAMI SHINICHI , ASANO TAKESHI
IPC: H04L25/02 , G06F1/04 , G06F3/00 , G06F13/40 , G09G3/20 , G09G5/00 , H03M5/06 , H04B15/00 , H04B15/04 , H04L25/49
Abstract: PURPOSE: To reduce EMI radiation by converting data to be put on a plurality of data lines in such a mode that the EMI generated from the data lines are reduced as compared with the case where the data are not converted. CONSTITUTION: When a SYNC signal which is one of interface signals is real, n-bit counters 110 and 120 are reset and, when the SYNC signal is false, the counters 110 and 120 make counting operations. Adders 120 and 220 respectively add the output values of the counters 110 and 120 to data '1',..., 'n' at every bit including carries. Timing adjusting circuits 130 and 230 make the output value of the counter 110 to be properly subtracted by means of a signal demodulation circuit 200 by adjusting the operations of a signal conversion circuit 100 and the operating timing of the circuit 200. When, for example, all bits of the data '1',..., 'n' do not change for more than a fixed period of time, the data conversion by means of the circuit 100 is not required, because EMI radiation is originally less.
-
公开(公告)号：JP2002057421A
公开(公告)日：2002-02-22
申请号：JP2000233346
申请日：2000-08-01
Applicant: IBM
Inventor： IGAMI SHINICHI
IPC: G02F1/1345 , G02F1/13 , H05K1/00 , H05K1/02 , H05K3/42
Abstract: PROBLEM TO BE SOLVED: To suppress the EMI in a source driver card for liquid crystal displays. SOLUTION: A source driver card 20 for liquid crystal displays is of a microstrip type. Odd-numbered video signal buses 40 and even-numbered video signal buses 41 extend in the length direction of a board and comprise through- vias 32, 33 at a lengthwise center to which signals are inputted from a tab driver LSI 34. Each odd-numbered video signal bus 40 comprises a plurality of through-vias 30 at positions which are symmetric with respect to the via 32 and tab leading wires 44 are led from the vias 30. Each even-numbered video signal bus 41 comprises a plurality of through-bias 31, at positions symmetric to the via 33, and tab leading wires 44 are led from the vias 31.
-
-
-
Search Results
4
records
(took 0.032 seconds)
