JP2013047994A5

JP2013047994A5 -

Info

Publication number: JP2013047994A5
Application number: JP2012265089A
Authority: JP
Filing date: 2012-12-04
Publication date: 2013-05-16
Anticipated expiration: 2030-04-28

Description

本発明は、上記の課題の少なくとも一部を解決するためになされたものであり、以下の形態または適用例として実現することができる。
［形態１］
データ通信に関する仕様が異なる第１種と第２種のインターフェースのいずれかを用いてホスト機器との間でデータ通信を行うことが可能な周辺機器であって、
前記第１種のインターフェースに対応する第１種のコネクタと、前記第２種のインターフェースに対応する第２種のコネクタとを選択的に接続可能な単一の接続部と、
前記第１種と第２種のコネクタのいずれかを用いて、当該周辺機器と前記ホスト機器とが物理的に接続された場合に、前記ホスト機器から送られる信号で開始される初期接続処理であって、前記第１種と第２種のインターフェースのいずれかを用いて前記ホスト機器との間で論理的な接続を形成する初期接続処理を行う制御部と、を備え、
前記制御部は、さらに、
前記物理的な接続を維持した状態において、前記初期接続処理により形成された前記論理的な接続を切断して前記ホスト機器との間で前記論理的な接続を再び形成する、再接続処理を行うことが可能であり、
前記制御部は、
当該周辺機器と前記ホスト機器との前記物理的な接続が、前記第１種と第２種のコネクタのいずれかを用いて行われたかに拘わらず、前記初期接続処理と前記再接続処理の両方の処理を行う、周辺機器。
［形態２］
形態１に記載の周辺機器であって、
前記再接続処理は、前記初期接続処理の後に他の処理を途中にはさむことなく前記初期接続処理の直後に開始される、周辺機器。
SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.
[Form 1]
A peripheral device capable of performing data communication with a host device using either the first type or the second type interface having different specifications related to data communication,
A single connection portion capable of selectively connecting a first type connector corresponding to the first type interface and a second type connector corresponding to the second type interface;
An initial connection process started by a signal sent from the host device when the peripheral device and the host device are physically connected using either the first type or the second type connector. A control unit for performing an initial connection process for forming a logical connection with the host device using either the first type or the second type interface;
The control unit further includes:
In a state where the physical connection is maintained, a reconnection process is performed in which the logical connection formed by the initial connection process is disconnected and the logical connection is formed again with the host device. Is possible and
The controller is
Regardless of whether the physical connection between the peripheral device and the host device is performed using either the first type or the second type connector, both the initial connection process and the reconnection process are performed. Peripheral devices that perform processing.
[Form 2]
The peripheral device according to aspect 1, wherein
The reconnection process is a peripheral device that is started immediately after the initial connection process without interposing other processes after the initial connection process.

［適用例３］適用例１に記載の周辺機器であって、前記制御部は、当該周辺機器と前記ホスト機器との前記物理的な接続が、前記第１種と第２種のコネクタのいずれかを用いて行われたかに拘わらず、前記初期接続処理と前記再接続処理の両方の処理を行う、周辺機器。
適用例３に記載の周辺機器によれば、周辺機器の制御を単純化しつつも、所望とするインターフェースを用いたデータ通信を行うために、論理的な接続を形成するための処理を再度行うことができる。
[Application Example 3] The peripheral device according to Application Example 1 , wherein the control unit is configured so that the physical connection between the peripheral device and the host device is either the first type or the second type connector. A peripheral device that performs both the initial connection process and the reconnection process regardless of whether the process is performed using the
According to the peripheral device described in the application example 3, the processing for forming a logical connection is performed again in order to perform data communication using a desired interface while simplifying the control of the peripheral device. Can do.

なお、上記のような誤認識は、ＵＳＢポート８０にＵＳＢ３．０Ａコネクタが正常に接続されている状態（すなわち、ＵＳＢポート８０の各端子とＵＳＢ３．０Ａコネクタの各端子が接触している状態）で、ＵＳＢ３．０Ｂコネクタを外部記憶装置１００が備えるＵＳＢポート７０に差し込む場合においても発生し得る。利用者がＵＳＢ３．０ＢコネクタをＵＳＢポート７０に差し込んだ場合に、利用者がＵＳＢ３．０Ｂコネクタを未だ保持した状態で初期接続処理が開始されると、ＵＳＢ３．０ＢコネクタのＵＳＢ３．０準拠の各端子と、ＵＳＢポート７０のＵＳＢ３．０準拠の各端子が安定的に接触していない状態が起こり得るからである。
Note that the above-described misrecognition is caused by a state in which the USB 3.0 A connector is normally connected to the USB port 80 (that is, a state in which each terminal of the USB port 80 is in contact with each terminal of the USB 3.0A connector This may occur even when the USB 3.0B connector is inserted into the USB port 70 of the external storage device 100. When the user inserts the USB 3.0B connector into the USB port 70 and the initial connection processing is started with the user still holding the USB 3.0B connector, each USB 3.0 compliant USB 3.0 connector is This is because a state in which the terminal and each USB 3.0-compliant terminal of the USB port 70 are not in stable contact may occur.

再接続処理の後、Ｉ／Ｆ判別部５６は、再接続処理により形成されたインターフェースの種類を判別する（ステップＳ５）。形成されたインターフェースがＵＳＢ３．０インターフェースである場合、ＵＳＢ３．０インターフェースを用いたデータ通信をＰＣ２００との間で行うことが可能となる（ステップＳ６）。一方、形成されたインターフェースがＵＳＢ２．０インターフェースである場合、ＵＳＢ２．０インターフェースを用いたデータ通信をＰＣ２００との間で行うことが可能となる（ステップＳ７）。
After the reconnection process, the I / F determination unit 56 determines the type of interface formed by the reconnection process (step S5). If the formed interface is a USB 3.0 interface, data communication using the USB 3.0 interface can be performed with the PC 200 (step S6). On the other hand, when the formed interface is a USB 2.0 interface, data communication using the USB 2.0 interface can be performed with the PC 200 (step S7).

上記のように、本実施例の外部記憶装置１００は、ケーブル３００の抜き差しを利用者に強いることなく、一旦形成された論理的な接続を切断して、再度、論理的な接続を形成することができる。また、再接続処理（ステップＳ４）は、初期接続処理（ステップＳ１）よりも後に行われる。これにより、再接続処理（ステップＳ４）を行う際には、初期接続処理（ステップＳ１）を行う際に比べ、ＵＳＢ３．０準拠の各端子と、ＵＳＢポート７０，８０の各端子が安定的に接触している可能性が高い。よって、再接続処理（ステップＳ４）を行うことで、ＰＣ２００が外部記憶装置１００をＵＳＢ２．０デバイスであると誤って認識する可能性を低減できる。これにより、データ伝送速度の速い所望とするインターフェース（本実施例の場合、ＵＳＢ３．０インターフェース）を用いて外部記憶装置１００はＰＣ２００との間でデータ通信を行うことができる。
As described above, the external storage device 100 according to the present embodiment disconnects the logical connection that has been once formed and forms a logical connection again without forcing the user to connect or disconnect the cable 300. Can do. The reconnection process (step S4) is performed after the initial connection process (step S1). As a result, when performing the reconnection process (step S4), the USB 3.0-compliant terminals and the USB ports 70 and 80 are more stable than when performing the initial connection process (step S1). There is a high possibility of contact. Therefore, by performing a reconnection process (step S4), and possible to reduce the possibility of the P C200 to recognize erroneously external storage device 100 as a USB2.0 device. As a result, the external storage device 100 can perform data communication with the PC 200 using a desired interface having a high data transmission speed (USB 3.0 interface in this embodiment).

Claims

A peripheral device capable of performing data communication with a host device using either the first type or the second type interface having different specifications related to data communication,
A single connection portion capable of selectively connecting a first type connector corresponding to the first type interface and a second type connector corresponding to the second type interface;
An initial connection process started by a signal sent from the host device when the peripheral device and the host device are physically connected using either the first type or the second type connector. A control unit for performing an initial connection process for forming a logical connection with the host device using either the first type or the second type interface;
The control unit further includes:
In a state where the physical connection is maintained, a reconnection process is performed in which the logical connection formed by the initial connection process is disconnected and the logical connection is formed again with the host device. it is possible der is,
The controller is
Regardless of whether the physical connection between the peripheral device and the host device is performed using either the first type or the second type connector, both the initial connection process and the reconnection process are performed. Peripheral devices that perform processing .

The peripheral device according to claim 1,
The reconnection process is a peripheral device that is started immediately after the initial connection process without interposing other processes after the initial connection process .

The peripheral device according to claim 1 or 2 ,
The reconnection process includes:
A peripheral device comprising a step in which the control unit disconnects the logical connection formed by the initial connection process by setting the state of the control unit to an initial state .

The peripheral device according to claim 1 or 2 ,
The reconnection process includes:
The peripheral device includes a step in which the control unit causes the host device to transmit a bus reset signal to the peripheral device, thereby disconnecting a logical connection formed by the initial connection process .

The peripheral device according to any one of claims 1 to 4 ,
The first type interface is compliant with USB 2.0,
The second type interface is a peripheral device that conforms to USB3.0 .