Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

I/O controller, signal processing system, and method of transferring data

A controller and data technology, applied in the field of data transmission, can solve problems such as the inability to reduce the burden of processing and transmitting information, and the inability to reduce the utilization rate of the memory bus.

Inactive Publication Date: 2006-09-20
KK TOSHIBA
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, even in the I / O controller of the above-mentioned publication, in order to obtain the transfer information, read access to the main memory is necessary
neither reduces the burden on processing transfer information nor reduces memory bus usage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • I/O controller, signal processing system, and method of transferring data
  • I/O controller, signal processing system, and method of transferring data
  • I/O controller, signal processing system, and method of transferring data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] figure 1 The configuration of a signal processing system according to an embodiment of the present invention is shown. A signal processing system is a system that processes digital signals and is implemented as a personal computer, television, and audio video (AV) equipment.

[0022] The signal processing system includes a central processing unit (CPU) 11 , a main memory 12 , an I / O controller 13 and an I / O device 14 . These components are connected to the processor bus 10 .

[0023] The CPU 11 is a processor for processing various data to control the operation of the signal processing system. The main memory 12 is a memory device for storing programs to be executed by the CPU 11 and data to be processed by the CPU 11 . The I / O controller 13 controls the I / O device 14 . At the request of the CPU 11, the I / O controller 13 transfers data between the main...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to one embodiment, an I / O controller transfers data between a memory and an I / O device by request of a processor. The I / O controller includes a storage unit to which write access is gained by the processor and which stores descriptor chain information written by the processor, the descriptor chain information including a plurality of descriptors each describing a content of data transfer to be executed, and a data transfer control unit which processes the descriptors in sequence and executes a series of data transfers by direct memory access to transfer data from the memory to the I / O device.

Description

technical field [0001] The present invention relates to an I / O controller, a signal processing system, and a method of transferring data for transferring data from a memory to an I / O device. Background technique [0002] Recently, various types of signal processing systems have been developed, such as personal computers and audio video (AV) equipment. In these signal processing systems, in order to efficiently transfer a large amount of data streams such as AV data, direct memory access (DMA) transfer is used. [0003] DMA transfers using descriptor chain information, that is, descriptor-based DMA transfers have been used. Descriptor chain information is composed of multiple transfer descriptors (or descriptors for short) connected in a chain. Each transfer descriptor is transfer information describing the contents of data transfer to be performed. Descriptor chain information is prepared by software in main memory before the DMA transfer begins. [0004] The DMA control...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/28
CPCG06F13/28
Inventor 高宫健村野义明
Owner KK TOSHIBA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com