Global Patent Index - EP 1008054 A1

EP 1008054 A1 2000-06-14 - REAL TIME SOFTWARE SYSTEM

Title (en)

REAL TIME SOFTWARE SYSTEM

Title (de)

ECHTZEITSOFTWARESYSTEM

Title (fr)

SYSTEME LOGICIEL TEMPS REEL

Publication

EP 1008054 A1 (EN)

Application

EP 97939349 A

Priority

  • US 9713182 W
  • US 70528596 A

Abstract (en)

[origin: WO9809225A1] A computer system (10) and a method of operation thereof includes a memory (34) having a standard operating system stored in a first portion (72) and a real time software system stored in a second portion (76a, 76b), and a CPU (20) connected to the memory. The standard operating system controls the CPU (20) to generate standard time slices (100) each having a plurality of instruction cycles (82) and the real time sofware system controls the CPU to divide the standard time slices into real time software system time slices (108) and standard operating system time slices (110). Real time program instructions are executed during the real time software system time slices (108) and other program instructions are executed during the standard operating system time slices (110). The real time software system can select a duty cycle for the ratio of the number of the time slices (108, 110) in the stardard time slice (100). A plurality of input/ouput interrupts can be serviced on a real time basis during the real time software system time slices (108).

IPC 1-7 (main, further and additional classification)

G06F 15/16

IPC 8 full level (invention and additional information)

G06F 9/48 (2006.01)

CPC (invention and additional information)

G06F 9/4887 (2013.01)

Citation (search report)

See references of WO 9809225A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

WO 9809225 A1 19980305; AU 4145797 A 19980319; EP 1008054 A1 20000614

INPADOC legal status


2003-09-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030201

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990924

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IT