Fujitsu Corporation

Matsushita Electric Industrial Co., Ltd.

Sony Corporation

Sony Computer Entertainment Inc.

Hiroyuki Machida

Nobuyuki Hayashi

Motoaki Tani

Takao Shinohara

Katsushige Amano

Tetsuji Yamamoto

Kiyoshi Owada

Yasuo Yamagishi

Takeshi Ishitsuka

A process scheduling apparatus has a delayed task handling process for processing delayed tasks having variable priorities and multiple other processes for handling processes other than delayed tasks. Fixed priorities are assigned to the other processes. The process scheduler sequentially executes the delayed task handling process and the other processes according the assigned priorities. A delayed task registration processor stores newly generated delayed tasks with assigned priorities in a queuing table. A delayed task priority controller selects the delayed task with the highest priority in the queuing table. A process priority controller sets the priority of the delayed task handling process to the same priority as the priority of the delayed task with the highest priority.

Process scheduling apparatus, process scheduling method, program for process scheduling, and storage medium recording a program for process scheduling

To start up an operating system (OS), CPU performs initializations in three modes: The three modes include a first I/O initialization (Early init) () which is to be done serially when no threads are yet usable, without any advanced technique and with a long wait time until a next operation can be made; a second I/O initialization () which is to be done when threads are usable, in a plurality of steps parallelized with each other using the usable threads according to the dependency relation between devices to be initialized and with synchronization between the steps each by a barrier; and a third I/O initialization (Lazy init) () in which remaining initializations are done in parallel with each other using the threads commensurately to a user process when the user process becomes executable. The present invention is applicable to home-use electric or electronic appliances.

Information processing apparatus for start-up of an operating system using three different initialization modes in a specific sequence

In the present invention, a computer in which a plurality of programs are executed under a management of an Operation System having a memory management mechanism includes a unit for ensuring atomicity of a first user process without requiring a dedicated CPU instruction. The unit for ensuring atomicity includes a unit for detecting an interrupt by a second user process, a unit for canceling the first user process by utilizing a memory protection function possessed by said Operating System, and a unit for executing an operation of the first user process again.

Systems and methods for ensuring atomicity of processes in a multitasking computing environment

A multilayer printed wiring board includes a core member having a plurality of glass clothes impregnated with a resin. Each of the glass clothes is woven with glass yarns each of which includes a bundle of glass filaments. One or more buildup layers are laminated on one or each surface of the core member. The core member has an elastic modulus which is no less than 100 times that of the buildup layer at 240&#xb0; C.

Multilayer printed wiring board

A photosensitive heat-resistant resin composition contains a polyamideimide resin, an organic solvent for dissolving the polyamideimide, an acrylic monomer or oligomer having at least two polymerizable double bonds, and a photoreaction initiator for initiating polymerization of the acrylic monomer or oligomer by photochemical reaction. The resin composition may be used to make a heat-resistant insulating film which may be patterned by selective irradiation of ultraviolet rays. The insulating film may be interposed between different conductor layers in a build-up multilayer circuit board.

Photosensitive heat-resistant resin composition, method of patterning insulating film made of the same, and patterned insulating film obtained thereby

A visible radiation-curable solder resist composition which comprises a resin component, a component for promoting photo-polymerization or -crosslinking, and optionally a diluent and any other additives, the resion componebt comprising a novolak resin skeleton and a polyfunctional acrylic monomer and the component for promoting photo-polymerization or -crosslinking comprising a photo-reaction initiator, a sensitizing dye and a heterocyclic compound having at least two endocyclic nitrogen atoms.

Growing community of inventors

Kanagawa, Japan

Hiroyuki Machida