公开(公告)号：BR8702851A

公开(公告)日：1988-03-01

申请号：BR8702851

申请日：1987-06-04

Applicant: IBM

Inventor： FREEMAN WILLIAM A ,  HURLIMANN DANIEL E ,  MILLER ERNEST L ,  SOLIE DARRYL W

IPC: H04L29/02 ,  G06F7/02 ,  H04L29/06 ,  H03M7/28

公开(公告)号：CA1273121A

公开(公告)日：1990-08-21

申请号：CA534763

申请日：1987-04-15

Applicant: IBM

Inventor： FREEMAN WILLIAM A ,  HURLIMANN DANIEL E ,  MILLER ERNEST L ,  SOLIE DARRYL W

IPC: H04L29/02 ,  G06F7/02 ,  H04L29/06

Abstract: COMMUNICATION BIT PATTERN DETECTION CIRCUIT A communication bit pattern detection circuit that provides an output signal upon the occurrence of one of several predefined bit patterns for a series of a specified number of bits for a multiple of input signals where each input signal is a continuous stream of serial bit data. The communication bit pattern detection circuit includes a detection stage having combinational logic connected to receive the input signals and providing the logically combined bits to latches of a shift register. The number of latches in the shift register is less than the specified number of bits for the predefined bit patterns. The output of these latches are provided to a logic stage that includes additional combinational logic that provides a nondetection signal. This nondetection signal is provided to indicate that the bits received are not part of any of the predefined bit patterns. The nondetection signal is input to reset a counter. The output of the counter is decoded to provide a signal when the counter counts to the specified number of bits in the predefined bit patterns.

公开(公告)号：CA1169576A

公开(公告)日：1984-06-19

申请号：CA393603

申请日：1982-01-05

Applicant: IBM

Inventor： BARNES JOHNNY G ,  HOOTEN JOHN A ,  HURLEY PATRICK J ,  MILLER ERNEST L

IPC: B41J3/44 ,  G06F3/12 ,  G06F17/21 ,  G06F17/24 ,  G06F3/14

Abstract: PRINTER SHARING BY PLURALITY OF DISPLAY UNITS IN WORD PROCESSING SYSTEM The present disclosure relates to word processing systems wherein material to be printed is formatted on a display unit having a display, e.g., CRT display and a text formatting processor which formats the display material. The display unit further includes means for controlling a printer to print the formatted text. In the present invention a plurality of such display units share a printer. This is accomplished by having at least one of the display units comprise means for controlling the sharing of the printer by the plurality of display units and each of the other display units communicate with the printer through these printer sharing control means. At least part of this printer sharing control means is contained in the text formatting processor of the primary display unit through which the other display units communicate with the printer. AT9-81-005