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公开(公告)号:CA1054738A
公开(公告)日:1979-05-15
申请号:CA262063
申请日:1976-09-27
Applicant: IBM
IPC: G04G9/00 , C25D11/00 , G02F1/163 , G09F9/30 , G09G3/16 , G09G3/19 , G09G3/38 , G06K15/18 , G09F9/00
Abstract: In addition to the usual two electrodes of an electro-chromic cell at which balanced reactions take place, at least one further electrode is provided. Operation of the display is preceded by applying potential to the two electrodes so that one of them carries a coloured precipitate. Then, a relatively small potential across the a coloured electrode and a selected further electrode transfers the colour to the further electrode. Ohmic connection between the coloured electrode and the further electrode does not cause the colour to dissipate. One application is to a 7 - element digit display and a matrix display comprises columns of electrodes each headed by said two electrodes (called dump and transfer electrodes respectively) and including a plurality of further electrodes. Means for addressing and sensing such a display are described.
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公开(公告)号:SE311179B
公开(公告)日:1969-06-02
申请号:SE769663
申请日:1963-07-10
Applicant: IBM
Inventor: TAUB D , OWEN C , PROUDMAN A
Abstract: 1,055,261. Read-only stores. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 4, 1963 [July 10, 1962]. No. 26504/62. Heading G4A. In read-only memories in which a capacitive or other connection is made between selected drive and sense lines from sets of such lines the invention provides that there is a constant impedance to current in the drive line whatever the form of the stored data. This is done in Fig. 2 (not shown) by providing pairs of sense lines both lines of a pair being connected to a differential amplifier. One bits are stored by connecting the lines S1a, S2a to appropriate drive lines, and zero bits by connecting the lines S1b, S2b to the drive lines. Fig. 3 (not shown) shows pairs of drive and sense lines. Ones are stored by connecting the d drive lines to the p sense lines and the b drive lines to the q sense lines and zeroes by making the opposite connections. To pulse a drive line a transistor from the set G1 to GN is sent conductive after which a transistor T1 or T2 . . . is pulsed. The invention is also applicable to inductive readonly stores.
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