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Method for transferring data, storage device, its controlling method and controller for data transfer

A technology of data transmission control and data transmission method, which is applied in the input/output process of data processing, electrical digital data processing, input/output to the record carrier, etc. Problems such as missing amplitude and sound failure

Inactive Publication Date: 2003-11-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The data transmission method of a storage device with a USB interface is the batch transmission method with the lowest processing priority. When there are devices with other transmission methods on the USB interface, the data transmission speed of the storage device will be significantly reduced. When transferring images from the storage device In the data and audio data, there is a problem of missing sound and staccato
[0012] In addition, the isochronous transmission method has the highest processing priority among the transmission methods of the USB interface, which can guarantee the data transmission speed, but because the data content cannot be guaranteed, so if the transmission method of the storage device is only the isochronous transmission method, important data will be transferred. , there will be a problem that the data content cannot be guaranteed

Method used

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  • Method for transferring data, storage device, its controlling method and controller for data transfer
  • Method for transferring data, storage device, its controlling method and controller for data transfer
  • Method for transferring data, storage device, its controlling method and controller for data transfer

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Embodiment approach 1

[0056]Next, an external storage device and a data transfer method according to Embodiment 1 of the present invention will be described with reference to the drawings.

[0057] figure 1 It is a block diagram showing the configuration of an external storage device according to Embodiment 1 of the present invention.

[0058] exist figure 1 Among them, the configuration of the external storage device 10 includes a reading unit 11 , a transmission mode selection unit 12 , a data transmission unit 13 and a USB interface (USB I / F) 14 . In addition, the recording medium 15 according to Embodiment 1 is a disc-shaped member which is detachable from the external storage device 10 .

[0059] The reading unit 11 reads data from a detachable recording medium 15 . The transfer method selection unit 12 selects a data transfer method according to the type of the recording medium 15 and sends an instruction on the selected transfer method to the data transfer unit 13 . The data transmission...

Embodiment approach 2

[0078] Next, an external storage device and a data transfer method according to Embodiment 2 will be described with reference to the drawings.

[0079] The external storage device of Embodiment 2 has the figure 1 The external storage device 10 according to Embodiment 1 shown has the same configuration. In addition, the data transfer control device of Embodiment 2 is the same as that shown in figure 2 The data transfer control device 20 according to Embodiment 1 has the same configuration. In addition, the system constituted by the external storage device 10 and the data transfer control device 20 of the second embodiment is different from the system of the first embodiment in that the transfer method is selected for each file transferred from the external storage device 10 to the data transfer control device 20 .

[0080] Next, the operation of the system composed of the external storage device and the data transfer control device according to the second embodiment and the...

Embodiment approach 3

[0095] Next, an external storage device, a storage device control method, and a data transfer control device according to Embodiment 3 of the present invention will be described with reference to the drawings.

[0096] Figure 5 It is a block diagram showing the configuration of an external storage device having a USB interface according to the third embodiment.

[0097] exist Figure 5 Among them, the configuration of the external storage device 30 includes a reading unit 11 , a USB interface (USB I / F) 14 and a data transmission unit 31 . In addition, the reading unit 11 and the USB interface 14 are the same as those of the first embodiment figure 1 The ones shown are the same, and their explanations are omitted.

[0098] The data transmission unit 31 transmits the data read by the reading unit 11 from the recording medium 15 according to the data transmission mode instructed by the data transmission control device 40 connected to the external storage device 30 .

[0099]...

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Abstract

An object of the present invention is to provide a storage device having a USB interface, which transfers data in an isochronous transfer mode when the data on a recording medium attached to the storage device is video data or audio data. An external storage device (10) having a USB interface (14) comprises a reading part (11) for reading data from a recording medium (15), a transfer mode selection part (12) which selects the isochronous transfer mode as a transfer mode when the data recorded on the recording medium (15) is video data and / or audio data, while selects a bulk transfer mode as a transfer mode when the data is not video data and / or audio data, and a data transfer part (13) for transferring the data read by the reading part (11) in the transfer mode selected by the transfer mode selection part (12).

Description

technical field [0001] The present invention relates to a data transmission method, a storage device, its control method and a data transmission control device, in particular to a data transmission method for switching the transmission mode of a storage device with a USB interface, a storage device with a switchable transmission mode, and a transmission control device for the storage device. A method for controlling a storage device according to the present invention and a data transfer control device for controlling data transfer using the storage device. Background technique [0002] As the data transmission method of a device with a USB interface, there are the following transmission methods: [0003] 1. Isochronous transmission mode, [0004] 2. Interrupt transmission mode, [0005] 3. Control transmission mode, [0006] 4. Batch transmission mode. [0007] Therefore, for a device having a USB interface, the data transfer method is determined according to the type of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F13/38G11B20/10H04L12/28H04N5/92
CPCG11B20/10G06F3/0661G06F13/385
Inventor 山下秋芳山花正嗣藤岡位幸
Owner PANASONIC CORP
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