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公开(公告)号：US3597758A
公开(公告)日：1971-08-03
申请号：US3597758D
申请日：1968-12-19
申请人： IBM
CPC分类号： G09G3/2983 , H04N3/125
摘要： A plasma display panel has X and Y drive lines disposed on opposite sides of the panel, and plural signal sources are connected to the X and Y drive lines for the purpose of generating light characters on a dark background. The gas panel which may be relatively large consists of an illuminable gas sealed in a flat envelope. The gas at a selected coordinate intersection is ignited by a firing potential for maintaining illumination of ignited regions is supplied directly to the X and Y drive lines.
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公开(公告)号：US3593301A
公开(公告)日：1971-07-13
申请号：US3593301D
申请日：1968-01-15
申请人： IBM
发明人： NEWCOMB CHARLES E
摘要： In a pulse reiterating system including a delay line storage device, a system is provided for accommodating changes in delay line characteristics resulting from temperature variation or variations in clock frequency, or other system considerations. A synchronizing signal is stored in the delay line and used to control a start/stop oscillator which in turn is used to synchronize the read-in of data to the delay line. When all the data has been read from the delay line, a control pulse from a counter stops the oscillator until it is restarted for the next recirculation loop by the synchronizing signal. Since the oscillator is used to reclock the information during each recirculation loop, any variation in the length of the delay line or frequency of the oscillator is automatically compensated for.
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公开(公告)号：US3623068A
公开(公告)日：1971-11-23
申请号：US3623068D
申请日：1969-01-08
申请人： IBM
CPC分类号： G09G1/00
摘要： Disclosed is a display system including a regenerative display and a memory where the memory provides the information which is displayed. The memory addresses have a one-for-one correlation with the display addresses. Each word obtained from a memory address is displayed, when it contains a character code, at its corresponding display address. Each word in memory can store a character code defining a character to be displayed or a function code defining a regenerative function to be performed. The function codes are placed in only those memory locations, adjacent locations containing character information, which contain an indication that nothing (i.e., a space) is to be displayed. A control field in each memory word is employed to designate the nature of the particular word stored, that is, to designate whether a function code, character code or some other code is stored in that word. Using control fields allows those words which normally contain only space indications to be beneficially used to contain function codes. The function codes, of course, are decoded in a different manner from the character codes.
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