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1. 发明申请

US20130326094A1 USB DEVICE AND DETECTION METHOD THEREOF 有权
标题翻译： USB设备及其检测方法
公开(公告)号：US20130326094A1
公开(公告)日：2013-12-05
申请号：US13989101
申请日：2011-11-24
申请人： Jing Yu , Shaobin Huang , Kui Du
发明人： Jing Yu , Shaobin Huang , Kui Du
IPC分类号： G06F13/38
CPC分类号： G06F13/385 , G06F11/267 , G06F13/4072 , G06F2213/0042
摘要： A USB device and a detection method therefor. It can be detected whether the USB device is a master device or a slave device without the use of an ID pin, thereby saving the pin resources of the USB device. The USB device comprises: a series branch formed by a first pull-up resistor (R1) and a first switch (S1) and having one end connected to VCC and the other end connected to a D+ or D− data line; a series branch formed by a second pull-up resistor (R2) and a second switch (S2) and having one end connected to the VCC and the other end connected to the D+ data line; a series branch formed by a third pull-up resistor (R3) and a third switch (S3) and having one end connected to VCC and the other end connected to the D− data line; a series branch formed by a fourth pull-up resistor (R4) and a fourth switch (S4) and having one end being grounded and the other end connected to the D+ data line; and a series branch formed by a fifth pull-up resistor (R5) and a fifth switch (S5) and having one end being grounded and the other end connected to the D− data line. The USB device belongs to the field of communication devices.
摘要翻译： USB装置及其检测方法。可以检测USB设备是否是主设备或从设备，而不使用ID引脚，从而节省USB设备的引脚资源。 USB装置包括：由第一上拉电阻器（R1）和第一开关（S1）形成的串联支路，其一端连接到VCC，另一端连接到D +或D-数据线; 由第二上拉电阻器（R2）和第二开关（S2）形成的串联支路，其一端连接到VCC，另一端连接到D +数据线; 由第三上拉电阻器（R3）和第三开关（S3）形成的串联支路，其一端连接到VCC，另一端连接到D-数据线; 由第四上拉电阻器（R4）和第四开关（S4）形成的串联分支，其一端接地，另一端连接到D +数据线; 以及由第五上拉电阻（R5）和第五开关（S5）形成的串联支路，其一端接地，另一端与D-数据线相连。 USB设备属于通信设备领域。

2. 发明授权

US08793425B2 USB device and detection method thereof 有权
标题翻译： USB设备及其检测方法
公开(公告)号：US08793425B2
公开(公告)日：2014-07-29
申请号：US13989101
申请日：2011-11-24
申请人： Jing Yu , Shaobin Huang , Kui Du
发明人： Jing Yu , Shaobin Huang , Kui Du
IPC分类号： G06F13/14 , G06F13/38 , G06F11/267 , G06F13/00
CPC分类号： G06F13/385 , G06F11/267 , G06F13/4072 , G06F2213/0042
摘要： A USB device and a detection method therefor. It can be detected whether the USB device is a master device or a slave device without the use of an ID pin, thereby saving the pin resources of the USB device. The USB device comprises: a series branch formed by a first pull-up resistor (R1) and a first switch (S1) and having one end connected to VCC and the other end connected to a D+ or D− data line; a series branch formed by a second pull-up resistor (R2) and a second switch (S2) and having one end connected to the VCC and the other end connected to the D+ data line; a series branch formed by a third pull-up resistor (R3) and a third switch (S3) and having one end connected to VCC and the other end connected to the D− data line; a series branch formed by a fourth pull-up resistor (R4) and a fourth switch (S4) and having one end being grounded and the other end connected to the D+ data line; and a series branch formed by a fifth pull-up resistor (R5) and a fifth switch (S5) and having one end being grounded and the other end connected to the D− data line. The USB device belongs to the field of communication devices.
摘要翻译： USB设备及其检测方法。可以检测USB设备是否是主设备或从设备，而不使用ID引脚，从而节省USB设备的引脚资源。 USB装置包括：由第一上拉电阻器（R1）和第一开关（S1）形成的串联支路，其一端连接到VCC，另一端连接到D +或D-数据线; 由第二上拉电阻器（R2）和第二开关（S2）形成的串联支路，其一端连接到VCC，另一端连接到D +数据线; 由第三上拉电阻器（R3）和第三开关（S3）形成的串联支路，其一端连接到VCC，另一端连接到D-数据线; 由第四上拉电阻器（R4）和第四开关（S4）形成的串联分支，其一端接地，另一端连接到D +数据线; 以及由第五上拉电阻（R5）和第五开关（S5）形成的串联支路，其一端接地，另一端与D-数据线相连。 USB设备属于通信设备领域。

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