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WO2005116845A1 - Dispositif usb - Google Patents

Dispositif usb Download PDF

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Publication number
WO2005116845A1
WO2005116845A1 PCT/JP2005/009360 JP2005009360W WO2005116845A1 WO 2005116845 A1 WO2005116845 A1 WO 2005116845A1 JP 2005009360 W JP2005009360 W JP 2005009360W WO 2005116845 A1 WO2005116845 A1 WO 2005116845A1
Authority
WO
WIPO (PCT)
Prior art keywords
usb
driver
electronic device
main function
class
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2005/009360
Other languages
English (en)
Japanese (ja)
Inventor
Shinichi Egashira
Ryo Sakai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of WO2005116845A1 publication Critical patent/WO2005116845A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10—Program control for peripheral devices
    • G06F13/102—Program control for peripheral devices where the programme performs an interfacing function, e.g. device driver

Definitions

  • the present invention relates to a USB (Universal) connected to an electronic device such as a computer and a digital home appliance.
  • USB Universal
  • a device connected to a computer includes, in addition to the device, an external storage device such as a CD-ROM or a floppy disk (registered trademark) drive for installing a device driver in the computer.
  • an external storage device such as a CD-ROM or a floppy disk (registered trademark) drive for installing a device driver in the computer.
  • USB devices which are currently dominant in the peripheral field of the computer field.
  • the device driver is attached to the media 3 such as a floppy disk or CD-ROM as shown in Fig. 7, and you can use it to install the device driver. Become.
  • the computer 1 determines the USB device by referring to the descriptor information A unique to the USB device.
  • the descriptor information A of the USB device 2 includes a vendor ID, a product ID, and a revision ID (al), a class code, a subclass code, and a protocol (a2).
  • an INF file B which is a driver information file stored in the storage device of the computer 1, includes a vendor ID, a product ID, and a revision ID (bl), a class code, and a subclass code. And protocol (b2).
  • the computer 1 compares the vendor ID, product ID, and revision ID (al) obtained from the descriptor information A of the USB device 2 with the vendor ID, product ID, and revision ID (bl) of the INF file. Compare and if they match, incorporate the device driver (cl) specified in the INF file.
  • the class code and subclass The protocol and protocol (a2) are compared with the class code, subclass code and protocol (b2) of the INF file B. If they match, the device driver (c2) specified in the INF file B is changed to ⁇ a.
  • the device driver corresponding to the USB device 2 is saved in the storage device of the computer 1, and the device driver is not installed. In this case, install a device driver for external recording media such as CD-ROM or floppy disk.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2003-114859 (Pages 2-3, Figure 1-2)
  • Patent Document 1 is a technology that attempts to solve this problem by storing a device driver for a computer in a USB device.
  • a resident program is used to determine whether the device driver is built into the computer or not. However, when the number of USB devices increases, the number of resident applications is required, which is not practical. If the USB host is a digital home appliance, it may not have much memory, so the number of resident applications that can be executed is further limited.
  • the present invention takes the following means in order to solve the above problems.
  • USB device according to the present invention
  • An input / output unit for transmitting and receiving data to and from an electronic device
  • a main function unit that constitutes a main function of the USB device
  • a driver storage memory for storing a device driver
  • the USB mass storage class is a standard for operating a storage device such as a CD-ROM or a DVD-ROM by USB.
  • This USB mass storage class Having the descriptor information allows the electronic device to recognize the USB device as a USB mass storage device and enables the installation of a device driver for the USB main function.
  • the USB control unit transmits descriptor information for the USB mass storage class in response to a request from the electronic device.
  • the electronic device first determines whether or not a device driver for the main function exists in the electronic device based on the descriptor information for the USB mass storage class. When present, the electronic device incorporates device drivers for its primary function. If not present, the electronic device incorporates a device driver for the standard USB mass storage class. USB devices behave as USB mass storage class devices. This allows the electronic device to treat the USB device in the same way as a floppy disk drive or CD-ROM drive. That is, the electronic device can freely access the driver storage memory of the USB device. Then, the device driver for the main function is read from the driver storage memory and installed in the electronic device.
  • a preferable configuration further includes a built-in determination register that indicates whether or not the device driver is built in the electronic device.
  • the built-in determination register is set to a non-built-in state when the electronic device is connected to the electronic device, and the USB control unit controls the electronic device based on the USB mass storage class descriptor information.
  • the built-in determination register is updated to the built-in state.
  • the USB control unit reads the device driver from the driver storage memory when the electronic device determines that the electronic device is in a non-incorporated state based on the descriptor information for the USB mass storage class. And installing the device driver in the electronic device, and updating the installed status determination register to the installed status after the electronic device has installed the device driver.
  • the USB control unit updates the installed state determination register to the installed state based on the reception of a unique vendor request from the electronic device.
  • the USB control unit switches between the USB mass storage function and the main function based on the reception of a bus reset or a mass storage reset from the electronic device.
  • a USB device for example, a DVD drive
  • the present invention may be developed as follows.
  • USB device According to the present invention
  • An input / output unit for transmitting and receiving data to and from an electronic device
  • a main function unit constituting a function belonging to the mass storage class as a main function of the USB device, a driver storage memory for storing a device driver,
  • class information has descriptor information indicating a USB mass storage class
  • the electronic device determines that the device driver has been installed based on the descriptor information,!
  • a USB control unit that reads the driver and installs it on the electronic device
  • the USB control unit switches from the USB mass storage function to the main function based on the reception of the vendor request of the electronic device.
  • the USB control unit determines whether or not the device driver is built in the electronic device by a unique vendor request, and when the device driver is built in, controls by the main function described above. Then, when the device driver is controlled as a USB mass storage device, the device driver is read from the driver storage memory and installed in the electronic device, and then the control is switched to the main function.
  • the USB device when the device driver of the USB device is installed on the electronic device side, the USB device is operated by the main function, and when the device driver is not yet installed, the USB device is operated as a USB mass storage device.
  • Device drivers can be installed automatically.
  • connection may be disconnected and then reconnected.
  • the connection may be switched to another electronic device.
  • the following configuration responds to this.
  • USB device According to the present invention
  • An input / output unit for transmitting and receiving data to and from an electronic device;
  • a main function unit that constitutes a main function of the USB device;
  • a driver storage memory for storing a device driver
  • a descriptor information holding flag for holding which of the two types of descriptor information is active is active
  • a reset switch for resetting the descriptor information holding flag is provided.
  • the device driver is installed in the electronic device.
  • the descriptor information holding flag is set. Therefore, in the second connection, the procedure of using the descriptor information for the USB mass storage class can be omitted, and the time can be reduced.
  • the reset switch When switching connection to an electronic device with a different OS (operating system), the reset switch is operated to reset the descriptor information holding flag. Make use possible.
  • the installation program can be collectively managed.
  • FIG. 1 A block diagram showing a configuration of a USB device according to Embodiment 1 of the present invention.
  • FIG. 2 is an operation sequence diagram of a USB device and a computer according to Embodiment 1 of the present invention.
  • FIG. 3 is an operation sequence diagram of a USB device and a computer according to Embodiment 1 of the present invention.
  • FIG. 4 is a block diagram showing a configuration of a USB device according to a second embodiment of the present invention.
  • FIG. 5 is an operation sequence diagram of a USB device and a computer according to Embodiment 2 of the present invention.
  • FIG. 6 is a block diagram showing a configuration of a USB device according to Embodiment 3 of the present invention.
  • FIG. 7 is an explanatory diagram of a mode of installing a device driver of a USB device in a computer according to the related art
  • USB device Accordingly, embodiments of a USB device according to the present invention will be described in detail with reference to the drawings. Note that a description will be given using a computer as an example of an electronic device.
  • FIG. 1 is a block diagram showing a configuration of a USB device according to Embodiment 1 of the present invention.
  • the USB device 2 includes an input / output unit 11 for transmitting and receiving data to and from the computer 1, a USB control unit 12 for controlling the USB device 2, and a main function unit for storing the original functions of the USB device 2. 13, a driver storage memory 14 for storing a device driver, and a built-in determination register 15.
  • the built-in determination register 15 is for determining whether or not the device driver of the USB device 2 is installed in the computer 1.
  • the USB control unit 12 has two types of descriptor information Al and A2.
  • the descriptor information Al, A2 is used by the computer 1 to obtain product information (device type and manufacturer information).
  • Descriptor information A2 for the main function is dedicated to device driver installation, and describes the contents of the main function (class) that the USB device 2 originally has.
  • the descriptor information A1 for the mass storage class describes the contents regarding the USB mass storage class for the purpose of installing the device driver.
  • the USB mass storage class is a standard for operating storage devices such as CD-ROM and DVD-ROM by USB.
  • the USB control unit 12 further has control software for operating the USB mass storage class.
  • the USB device 2 operates as a main function when the device driver of the USB device 2 is installed in the computer 1, and operates as a USB mass storage class device when the device driver is not installed. In the latter case, the device driver of the driver storage memory 14 is read out and installed in the computer 1 by the operation of the USB mass storage class.
  • the computer 1 When the connection of the USB device 2 to the computer 1 is confirmed, the computer 1 starts an erasure process and acquires information necessary for using the USB device 2. That is, the computer 1 requests the descriptor information A of the USB device 2.
  • the descriptor information A1 for the USB mass storage class includes a vendor ID, a product ID, and a revision ID, a class code, a subclass code, and a protocol.
  • the vendor ID, product ID, and revision ID are the same as the descriptor information A2 for the main function.
  • the class code, subclass code and protocol are exclusive to the USB mass storage class. However, this applies only when the revision ID is set.
  • the computer 1 compares the vendor ID, product ID, and revision ID obtained from the descriptor information A1 with the vendor ID, product ID, and revision ID of the INF file B stored in the computer 1. .
  • the device driver incorporated in the computer 1 issues a bus reset to the USB device 2.
  • the computer 1 starts the emanation processing of the USB device 2 again.
  • the computer 1 is used for the USB device 2 incorporated by specifying the INF file B.
  • the USB device 2 can be used by using the device driver.
  • the USB control unit 12 of the USB device 2 activates the main function unit 13 to enable the main function of the USB device 2 to operate.
  • the computer 1 stores the class code, subclass code, and protocol obtained from the descriptor information A1 for the USB mass storage class with the class code, subclass code, and protocol of the INF file B. Compare.
  • the descriptor information A1 describes that the USB device 2 is a device of the USB mass storage class.
  • device drivers for USB mass storage class are included as standard equipment in Windows OS after WindowsME / 2000.
  • the computer 1 incorporates a device driver for the USB mass storage class specified by the INF file B.
  • the device driver for USB mass storage class in computer 1 does not issue the above-mentioned vendor-unique device request.
  • the USB control unit 12 of the USB device 2 determines that the device driver for the USB mass storage class is installed in the computer 1.
  • the USB control unit 12 activates control software for operating the USB mass storage class on the driver storage memory 14, and accesses the driver storage memory 14 by using the control software. In this case, the USB device 2 behaves as a USB mass storage class device.
  • the USB device 2 can be treated by the computer 1 as equivalent to a storage device such as a floppy disk drive or a CD-ROM drive.
  • the computer 1 uses the driver storage memory 14 of the USB device 2 as a storage medium such as a CD-ROM medium. Can be recognized. As a result, the computer 1 can freely access the driver storage memory 14.
  • the main function unit 13 becomes irrelevant.
  • the device storage memory 14 of the USB device 2 stores a device driver for the main function of the USB device 2.
  • the computer 1 can install a device driver for the main function of the USB device 2 by accessing the device driver. That is, the device driver for the main function of the USB device 2 can be installed in the computer 1 without using a medium such as a floppy disk or a CD-ROM.
  • a bus reset is used to switch between operation in the USB mass storage class and operation in the main function. As a result, the user does not need to be aware of the switching of the operation state. In addition, adverse effects on the computer 1 (Windows OS) can be prevented.
  • USB device In the above configuration, the following USB device is also effective.
  • the configuration is such that a driver installation program is stored in the driver storage memory 14.
  • the USB control unit 12 starts the installation program, reads out the device driver for the main meeting from the driver storage memory 14, and installs it in the computer 1.
  • Vendor ID, product ID, etc. match, and the main function of USB device 2 becomes available.
  • Embodiment 2 of the present invention is directed to a USB device whose main function operates in the USB mass storage class.
  • a typical example of such a USB device is a DVD drive.
  • the USB device 2 includes an input / output unit 11, a USB control unit 12, a main function unit 13, and a driver storage memory 14 similar to those in the first embodiment. There is no built-in determination register 15 in the first embodiment.
  • the USB control unit 12 that controls the USB device 2 has one type of descriptor information, and is a descriptor for the USB mass storage class. Information Al only. Descriptor information dedicated to the installation of the device driver for the main function of USB device 2.
  • the computer 1 incorporates the device driver for the standard USB mass storage class specified by the INF file B.
  • the main function of the USB device 2 operates in the USB mass storage class.
  • USB device 2 To switch the operation mode of the USB device 2 to the main function after the device driver is installed, a device request unique to the vendor is transmitted. A bus reset is not necessary for re-emulation as in the first embodiment.
  • the present embodiment is useful when additionally installing a device driver for enhancing functions on a USB mass storage class device that is provided as standard equipment in the computer 1.
  • USB device is equipped with a USB mass storage class device driver as standard equipment, and a computer and a device driver corresponding to the driver storage memory are stored. If you connect to a computer with a different installation mechanism, you will not be able to use USB devices.
  • a configuration corresponding to this is the configuration of the third embodiment of the present invention.
  • the USB device 2 includes an input / output unit 11, a USB control unit 12, a main function unit 13, a driver storage memory 14, and a built-in determination unit similar to those in the first embodiment.
  • Register 15 has descriptor information holding flag (hereinafter referred to as flag) 16 that holds which descriptor information Al or A2 is active, and reset switch 17 for flag 16 I have.
  • the flag 16 is set to, for example, “0” in the initial state so as to use the descriptor information A1 for the mass storage class.
  • the USB control unit 12 refers to the built-in determination register 15. Since the built-in determination register 15 is “0”, the device driver for the main function of the USB device 2 is built into the computer 1 through the same processing as in the first embodiment.
  • the descriptor information A1 for the mass storage class is transmitted to the computer 1 in the above process.
  • the flag 16 is set to "1" and the descriptor information A2 for the main function is used.
  • the flag 16 can be set in a nonvolatile memory in the USB device 2.
  • the reset switch 17 is for returning the flag 16 to the initial state.
  • the device driver of the USB device 2 has already been incorporated in the computer 1.
  • the flag 16 is already set to ".” Therefore, after that, when the USB device 2 is connected to the computer 1, the USB control unit 12 sees the flag 16. "1" is set Therefore, the device driver of USB device 2 can be recognized as already installed in computer 1 without using the built-in determination register 15, and only the descriptor information A2 for the main function should be used. become.
  • the USB control unit 12 When the computer 1 issues the firmware processing, the USB control unit 12 does not perform the processing using the descriptor information A1 for the mass storage class. It performs the same operation as a normal USB device 2 that uses only the descriptor information A2 for the main function.
  • the procedure using the disk storage unit information A1 for the mass storage class at the beginning of the connection in the case of the first embodiment is omitted. Therefore, the time from when the USB device 2 is connected to when it can be used can be reduced.
  • USB device to a Windows PC and a computer having a different device driver installation mechanism.
  • the driver can be installed according to the procedure of the above-described method, and the USB device can be used.
  • the device connection is recognized as mass storage class.
  • the main function 13 of the USB device 2 can be used.
  • the flag 16 in the nonvolatile memory is also set to "1". Thereafter, the flag 16 allows the main function 13 of the USB device 2 to be used at any time.
  • the present invention is useful as a technology for efficiently installing a device driver of a USB device in a computer.
  • a computer is the only USB host that can be used.
  • Digital home appliances that have the function of a USB host are also widely applicable.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Information Transfer Systems (AREA)

Abstract

[MOYEN POUR RÉSOUDRE LES PROBLÈMES] Un dispositif USB (2) comprenant une unité d’entrée/sortie (11) pour communiquer des données avec un ordinateur (1), une unité de fonction principale (13) constituant une fonction principale du dispositif USB (2), une mémoire de stockage de pilote (14) stockant un pilote de dispositif, une unité de contrôle USB (12) possédant des informations de descripteur A1 incluant des informations de produit qui sont les mêmes qu’une autre et des informations de classe représentant la classe de stockage de masse USB, et des informations de descripteur A2 incluant des informations de classe représentant la classe à laquelle appartient la fonction principale et un registre de jugement d’incorporation (15) représentant si oui ou non le pilote de dispositif est incorporé dans l’ordinateur (1).
PCT/JP2005/009360 2004-05-26 2005-05-23 Dispositif usb Ceased WO2005116845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004155638 2004-05-26
JP2004-155638 2004-05-26

Publications (1)

Publication Number Publication Date
WO2005116845A1 true WO2005116845A1 (fr) 2005-12-08

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ID=35451053

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/009360 Ceased WO2005116845A1 (fr) 2004-05-26 2005-05-23 Dispositif usb

Country Status (1)

Country Link
WO (1) WO2005116845A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010526388A (ja) * 2007-05-07 2010-07-29 ソニー エリクソン モバイル コミュニケーションズ， エービー ホストコンピュータに対して露出するためのｕｓｂ対応周辺装置のための代替ｕｓｂ構成を自動的に提供する方法、装置及び記憶媒体
JP2012069166A (ja) * 2004-07-27 2012-04-05 Fujitsu Component Ltd 情報処理システムの制御方法
US8171502B2 (en) 2006-11-29 2012-05-01 Sony Ericsson Mobile Communications Ab Methods, devices and computer program products for automatically installing device drivers from a peripheral device onto a host computer
CN102567268A (zh) * 2010-12-31 2012-07-11 重庆重邮信科通信技术有限公司 一种usb转虚拟串口/modem的检测方法
CN112306914A (zh) * 2019-07-30 2021-02-02 株式会社和冠 信息输入装置、方法及存储介质
JP2022158860A (ja) * 2021-03-31 2022-10-17 瑞▲いー▼半導體股▲ふん▼有限公司 音声制御回路、ホスト装置及び関連する制御方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001202325A (ja) * 2000-01-24 2001-07-27 Fuji Photo Film Co Ltd Ｕｓｂ接続機器
JP2001282508A (ja) * 2000-03-28 2001-10-12 Asahi Optical Co Ltd 画像データ入力装置
JP2003150285A (ja) * 2001-11-13 2003-05-23 Nec Access Technica Ltd Ｕｓｂ周辺機器セットアップ装置
JP2004029885A (ja) * 2002-06-21 2004-01-29 Sharp Corp 接続装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001202325A (ja) * 2000-01-24 2001-07-27 Fuji Photo Film Co Ltd Ｕｓｂ接続機器
JP2001282508A (ja) * 2000-03-28 2001-10-12 Asahi Optical Co Ltd 画像データ入力装置
JP2003150285A (ja) * 2001-11-13 2003-05-23 Nec Access Technica Ltd Ｕｓｂ周辺機器セットアップ装置
JP2004029885A (ja) * 2002-06-21 2004-01-29 Sharp Corp 接続装置

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012069166A (ja) * 2004-07-27 2012-04-05 Fujitsu Component Ltd 情報処理システムの制御方法
US8171502B2 (en) 2006-11-29 2012-05-01 Sony Ericsson Mobile Communications Ab Methods, devices and computer program products for automatically installing device drivers from a peripheral device onto a host computer
JP2010526388A (ja) * 2007-05-07 2010-07-29 ソニー エリクソン モバイル コミュニケーションズ， エービー ホストコンピュータに対して露出するためのｕｓｂ対応周辺装置のための代替ｕｓｂ構成を自動的に提供する方法、装置及び記憶媒体
CN102567268A (zh) * 2010-12-31 2012-07-11 重庆重邮信科通信技术有限公司 一种usb转虚拟串口/modem的检测方法
CN112306914A (zh) * 2019-07-30 2021-02-02 株式会社和冠 信息输入装置、方法及存储介质
JP2021022309A (ja) * 2019-07-30 2021-02-18 株式会社ワコム 情報入力装置、方法、及びプログラム
US11704273B2 (en) 2019-07-30 2023-07-18 Wacom Co., Ltd. Information input device, method, and computer-readable medium for operating a controller in different modes corresponding to different device drivers
JP7386012B2 (ja) 2019-07-30 2023-11-24 株式会社ワコム 情報入力装置、方法、及びプログラム
US12072826B2 (en) 2019-07-30 2024-08-27 Wacom Co., Ltd. Information input device, method, and computer-readable medium for operating a controller in different modes corresponding to different device drivers
JP2022158860A (ja) * 2021-03-31 2022-10-17 瑞▲いー▼半導體股▲ふん▼有限公司 音声制御回路、ホスト装置及び関連する制御方法
JP7300493B2 (ja) 2021-03-31 2023-06-29 瑞▲いー▼半導體股▲ふん▼有限公司 音声制御回路、ホスト装置及び関連する制御方法
US11861260B2 (en) 2021-03-31 2024-01-02 Realtek Semiconductor Corp. Audio control circuit, host device and associated control method

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