公开(公告)号：US3599177A

公开(公告)日：1971-08-10

申请号：US3599177D

申请日：1968-09-16

Applicant: BUNKER RAMO

Inventor： JEN DIXSON TEH-CHAO ,  GROSKY STEPHEN A ,  DUGGAN ROBERT J

IPC: G09G1/00 ,  G06F3/14

CPC classification number: G09G1/00

Abstract: A system for storing characters of information in a selected form in a storage means which has a plurality of character positions. Characters are recorded in each position in a multibit code and means are provided for storing an additional control bit in each of the character positions. A selected form may be stored in the storage means by storing bits in selected ones of the control bit positions in accordance with a predetermined logical pattern. The state of each control bit is detected and utilized for controlling the field in the storage means in which new characters applied to the system are stored. In particular, the control bits may be utilized to identify tab positions in a particular form or to effect the protection of fixed field characters.

公开(公告)号：US3900834A

公开(公告)日：1975-08-19

申请号：US28657572

申请日：1972-09-05

Applicant: BUNKER RAMO

Inventor： CASEY RICHARD C ,  DUGGAN ROBERT J ,  GROSKY STEPHEN A ,  JEN DIXSON TEH-CHAO ,  SERRA JOHN J ,  WHITEHEAD DONALD SHAFFER ,  BOYCE THOMAS E

IPC: G06F12/00 ,  G06F17/30 ,  G06Q40/04 ,  G06F7/28 ,  G06F13/00 ,  G06F15/40

CPC classification number: G06Q40/04 ,  G06F17/30345

Abstract: This invention relates to a system in which a control computer supplies rapidly changing information concerning a large plurality of data items to a plurality of programmable control units for updating information contained in the memory of each unit. Each programmable control unit memory may contain information relating to a plurality of different items and information relating to a given item may be stored in a number of different locations within the memory, there being no predetermined relationship between these locations. The control computer sends a like update message to the programmable control units for updating of information relating to a particular item at all locations in each programmable control unit memory at which it appears. This is effected by use of a common address table provided in each memory, which table has an entry for each of the item storing locations in the memory. Each entry in the table contains the address of the corresponding item-storing memory location and a chain address to another entry in the table for a location at which information relating to the same item is stored. An update message relating to a given item contains information permitting a first entry in the table for the given item to be accessed. The address in the accessed entry is utilized to route the information in the message to a location in memory which is to be updated while the chain address in the accessed entry is utilized to access the table entry for another memory location containing information relating to the item. Succeeding table entries in the chain are utilized to control memory updates until all memory locations containing information relating to the item have been updated. Where the update message contains more than one field of information, the above-described procedure may be repeated for each received field. The table may also contain an indication of the type of information stored for the item at each memory location and this information-type indication may be utilized to determine whether information in a given input field is to be utilized for updati;ng information at a given location for the item, and, in some instances, to control the updating. The system also provides a capability for changing the items concerning which information is stored at a given location. When this occurs, appropriate changes are made in the table entries for the memory location and the chains for the items involved are modified.

公开(公告)号：US3587062A

公开(公告)日：1971-06-22

申请号：US3587062D

申请日：1969-09-11

Applicant: BUNKER RAMO

Inventor： JEN DIXSON TEH-CHAO

IPC: G06F3/153 ,  G11C21/00

CPC classification number: G06F3/153

Abstract: A read-write control system for a recirculating storage medium which permits both the reading and writing of information on a track during a single recirculation of the storage medium while requiring the use of only a single read-write head on the track. Two tracks on the storage medium are designated as buffer storage tracks. Means are provided for storing information from a selected track onto a first of the buffer storage tracks, the storing of information from the first buffer storage track onto a second buffer storage track, and for storing information from the second buffer storage track back onto the selected storage track. The storing means are configured relative to the buffer storage tracks in a manner such that the time between the reading of a given piece of information from the selected track and the restoring of the given piece of information in the selected track is normally equal to the time required for one revolution of the storage medium. At least one of the storing means includes means for making the information available for reading as it is being written. Also, at least one of the storing means includes means for the selective storing of new information in place of information read from the preceding track. At least one of the storing means should also include a register means the contents of which may be detected. By varying the size of the register means, the information may be effectively shifted in one direction or the other.