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Digital signal processing device and digital signal processing method

A digital signal processing and equipment technology, applied in the direction of electrical digital data processing, digital computer parts, multiple digital computer combinations, etc., can solve problems such as discontinuous sound signals, failures, and inability to perform sound signal data processing processes

Inactive Publication Date: 2004-04-28
PANASONIC CORP
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  • Claims
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Problems solved by technology

However, when the address bus 7 and the data bus 8 are occupied by other digital signal processing units, some digital signal processing units may fail to perform signal processing in synchronization with the audio sampling period
Acoustic noise may be generated due to discontinuities in the acoustic signal due to a failure in the processing of the acoustic signal data during an audio sample
Another shortcoming that the conventional digital signal processing equipment exists is that when the address bus 7 and the data bus 8 are occupied by a digital signal processing unit, the rest of the digital signal processing units cannot perform the processing of the acoustic signal data

Method used

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  • Digital signal processing device and digital signal processing method
  • Digital signal processing device and digital signal processing method
  • Digital signal processing device and digital signal processing method

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Embodiment Construction

[0043] Hereinafter, reference will be made to the preferred embodiments according to the present invention Figures 1 to 25 to describe. In all the figures referred to in the following description, like parts bear the same reference numerals.

[0044] now refer to Figure 1 to Figure 9 , the figure shows a first preferred embodiment of a digital signal processing device 100 according to the present invention.

[0045] A first preferred embodiment of the digital signal processing device 100 is as figure 1 As shown, it includes an input terminal 51, a plurality of digital signal processing units, such as first, second, third and fourth digital signal processing units 10, 20, 30 and 40, generally referred to as DSP#1, DSP#2, DSP#3 and DSP#4, and an output terminal 53 . The input 51 is suitable for inputting a plurality of acoustic signals from an external output device (not shown here). The digital signal processing units 10, 20, 30 and 40 are connected in series with each ...

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Abstract

Herein disclosed is a digital signal processing apparatus comprising: input means for inputting a plurality of acoustic signals from an external outputting device; a plurality of digital signal processing units electrically connected with one another in series to form a closed loop, for receiving and processing said acoustic signals as shared data elements in a sequential order; and output means for outputting a plurality of acoustic data elements processed and generated by said digital signal processing units to an external inputting device, whereby each of said digital signal processing units comprises: receiving means for receiving said shared data elements from a preceding digital signal processing unit; copied data storing means for copying said shared data elements to a shared memory section; acoustic signal processing means for inputting said shared data elements stored in said shared memory section as an input signal, processing said shared data elements thus inputted, and writing an output signal into said shared memory section as shared data elements; transmitting data storing means for storing shared data elements stored in said shared memory section into a transmitting memory; and transmitting means for transmitting said shared data elements stored in said transmitting memory to a subsequent digital signal processing unit.

Description

technical field [0001] The present invention relates to a digital signal processing device and a digital signal processing method, and more particularly, to a digital signal processing device including a plurality of digital signal processing units with storage devices, wherein the digital signal processing units share the storage as a shared memory respectively The device also relates to a control method thereof. Background technique [0002] Among various types of digital signal processing devices currently available, there is a digital signal processing device that includes a shared memory and is suitable for processing data stored in the shared memory. Figure 26 A conventional digital signal processing apparatus of this type shown comprises: a digital signal processing group 5 having a plurality of digital signal processing units, such as digital signal processing units 1, 2, 3 and 4, respectively referred to in the legend as " DSP#1", "DSP#2", "DSP#3" and "DSP#4"; shar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F15/16G06F13/16G06F15/78G10K15/12G10L19/00
CPCG06F15/8053
Inventor 阿部良二
Owner PANASONIC CORP
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