Information processing apparatus and method and recording medium

Inactive Publication Date: 2006-06-15
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0038] As mentioned above, according to the invention, the stream of packets of the predetermined format is received, the packets which were extracted from the stream of packets received and recorded to the recording apparatus are stored, and the packets are DMA transferred to the recording apparatus in accordance with a command which was formed in the command buffer and which instructs the DMA transfer by using the packets as a block of the predetermined data amount. Thu

Problems solved by technology

There is a problem such that those processes become a burden on the host CPU and high performance cannot be effected.
Therefore, there is a problem such t

Method used

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  • Information processing apparatus and method and recording medium
  • Information processing apparatus and method and recording medium
  • Information processing apparatus and method and recording medium

Examples

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Embodiment Construction

[0054]FIG. 2 shows a construction of an embodiment of a digital satellite broadcast receiving apparatus to which the invention is applied. In the diagram, portions corresponding to those in FIG. 1 mentioned above are designated by the same reference numerals and their descriptions are properly omitted hereinbelow. That is, the digital satellite broadcast receiving apparatus of FIG. 2 is constructed in a manner similar to the digital satellite broadcast receiving apparatus of FIG. 1 except for a point that a hard disk control unit 50 is provided in place of the hard disk control unit 14 shown in FIG. 1.

[0055]FIG. 3 shows an example of a construction of the hard disk control unit 50 in FIG. 2. In the diagram, portions corresponding to those in the hard disk control unit 14 in FIG. 1 are designated by the same reference numerals and their descriptions are properly omitted hereinbelow.

[0056] The reception transport stream from the descrambler 13 is supplied to the switch 31 and an inp...

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Abstract

A control machine which uses a data amount stored in a FIFO as a trigger and allows a DMA transfer to be started according to a capacity of the FIFO allows a control machine for preparing for the DMA transfer to start to prepare a command and the like for the DMA transfer. The control machine for preparing for the DMA transfer issues the prepared command to a control machine for transferring DMA data, so that a process according to the command is started. At the time of the DMA transfer, the burden on the host CPU is reduced.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional of U.S. application Ser. No. 09 / 913,688 filed on Nov. 14, 2001, which is a national phase entry under 35 U.S.C. § 371 of International Application No. PCT / JP00 / 08892 filed Dec. 15, 2000, published in Japanese, which claims priority from JP 11-358634 filed Dec. 17, 1999.BACKGROUND OF THE INVENTION [0002] The invention relates to information processing apparatus and method and a recording medium and, more particularly, to information processing apparatus and method and a recording medium which are suitable for reducing a burden of a host CPU when a DMA transfer is performed. [0003] In recent years, digital broadcast has been started in earnest and various digital broadcast receiving apparatuses have been put into practical use. Among those apparatuses, there is an apparatus having therein a storage device such as a hard disk or the like for recording the received digital broadcast program. FIG. 1 shows an ...

Claims

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Application Information

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IPC IPC(8): G06F13/28H04N5/44H04N5/76H04N5/781H04N9/804
CPCG06F13/28H04N5/76H04N5/781H04N9/8042
Inventor MORINAGA, TAKEO
Owner SONY CORP
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