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Signal processing apparatus, signal processing system and signal processing method

A signal processing device and signal processing technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of occupying storage space and so on

Inactive Publication Date: 2006-11-22
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, a lot of storage space is taken up

Method used

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  • Signal processing apparatus, signal processing system and signal processing method
  • Signal processing apparatus, signal processing system and signal processing method
  • Signal processing apparatus, signal processing system and signal processing method

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Embodiment Construction

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

[0021] attached figure 1 An example of the structure of a signal processing system according to an embodiment of the present invention is shown. This signal processing system is a system that processes digital signals, and is realized as, for example, a personal computer, AV equipment, or the like.

[0022] The signal processing system includes a CPU (Central Processing Unit) 11 , a main memory 12 , a memory controller 13 , a plurality of I / O devices 15 and a signal processing device 16 . These components are all connected to the bus 14 . The I / O device 15 includes, for example, a hard disk drive and a USB (Universal Serial Bus) controller.

[0023] The CPU 11 is a processor that performs various data processing, and controls the operation of the signal processing system. The main memory 12 is a storage device that stores programs executed by the CPU 11 and da...

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Abstract

The invention relates to a signal processing device, a signal processing system and a signal processing method. The device includes a first direct memory access controller (111), a second direct memory access controller (112) and an output signal generating unit (113), and the first direct memory access controller continuously processes a plurality of first descriptors , to perform a series of data transfers for reading the first data stored in the memory, and generate an activation signal when the first descriptor currently to be processed among the first descriptors includes control information indicating the start of another data transfer ; Each time the second direct memory access controller receives the activation signal, it executes the second descriptor currently to be processed in the second descriptor, so as to perform a data transfer in a series of data transfers for reading data stored in the memory the second data in; the output signal generation unit mixes the first data read by the first direct memory access controller and the second data read by the second direct memory access controller to generate and the output signal of the second data.

Description

technical field [0001] The present invention relates to a signal processing device, a signal processing system and a signal processing method for generating an output signal including two kinds of data. Background technique [0002] In recent years, various signal processing systems have been developed, such as personal computers and AV (audio / video) equipment. In these signal processing systems, direct memory access (DMA) transfer is used in order to efficiently perform transfer of a large-capacity data stream such as AV data. [0003] Japanese Patent Application Publication No. 2001-175585, discloses an apparatus that performs video data transfer by using DMA transfer. The device includes two DMA controllers. The two DMA controllers transfer the video data input from the camera to two different memories. [0004] As an interface standard for outputting AV data to an external device, there is known a standard in which an output signal including two kinds of data such as ...

Claims

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Application Information

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IPC IPC(8): G06F13/28
CPCG06F13/28
Inventor 杉田隆实森胁实
Owner KK TOSHIBA