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1. 发明申请

US20160117582A1 PERSISTENT NODES FOR RFID 审中-公开
公开(公告)号：US20160117582A1
公开(公告)日：2016-04-28
申请号：US14927435
申请日：2015-10-29
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： G06K19/073 , G06K19/07
CPC分类号： G06K19/073 , G06K19/0715 , G06K19/0723 , H03K3/0233
摘要： An RFID transponder in one embodiment comprises a radio frequency (RF) transceiver, processing logic coupled to the RF transceiver, a switch coupled to the processing logic, a tunneling device coupled to the switch and a differential sensing circuit having a first input coupled to the tunneling device and a second input coupled to a predetermined reference voltage. In one embodiment, the tunneling device can discharge to a voltage below the predetermined reference voltage.

2. 发明授权

US10141982B2 RFID protocols with non-interacting variants 有权
公开(公告)号：US10141982B2
公开(公告)日：2018-11-27
申请号：US14878996
申请日：2015-10-08
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： H04W12/06 , H04B5/00 , G06K7/10 , G06K7/01 , H04W12/04
摘要： In an RFID system having at least one tag and at least one reader, a tag and a reader can, in one embodiment, use a pair of keys, known to both the tag and the reader, to restrict the interaction of the tag and the reader so that tags having the pair of keys interact only with readers that use the pair of keys.

3. 发明申请

US20170185882A1 PERSISTENT NODES FOR RFID 审中-公开
公开(公告)号：US20170185882A1
公开(公告)日：2017-06-29
申请号：US15413294
申请日：2017-01-23
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： G06K19/073 , G06K19/07
CPC分类号： G06K19/073 , G06K19/0715 , G06K19/0723 , H03K3/0233
摘要： An RFID transponder in one embodiment comprises a radio frequency (RF) transceiver, processing logic coupled to the RF transceiver, a switch coupled to the processing logic, a tunneling device coupled to the switch and a differential sensing circuit having a first input coupled to the tunneling device and a second input coupled to a predetermined reference voltage. In one embodiment, the tunneling device can discharge to a voltage below the predetermined reference voltage.

4. 发明授权

US09552540B2 Persistent nodes for RFID 有权
标题翻译： RFID持续节点
公开(公告)号：US09552540B2
公开(公告)日：2017-01-24
申请号：US14927435
申请日：2015-10-29
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： G06K19/06 , G06K19/073 , G06K19/07 , H03K3/0233
CPC分类号： G06K19/073 , G06K19/0715 , G06K19/0723 , H03K3/0233
摘要： An RFID transponder in one embodiment comprises a radio frequency (RF) transceiver, processing logic coupled to the RF transceiver, a switch coupled to the processing logic, a tunneling device coupled to the switch and a differential sensing circuit having a first input coupled to the tunneling device and a second input coupled to a predetermined reference voltage. In one embodiment, the tunneling device can discharge to a voltage below the predetermined reference voltage.
摘要翻译：一个实施例中的RFID应答器包括射频（RF）收发器，耦合到RF收发器的处理逻辑，耦合到处理逻辑的开关，耦合到开关的隧道装置和差分感测电路，差分感测电路具有耦合到隧道装置和耦合到预定参考电压的第二输入。在一个实施例中，隧穿装置可以放电到低于预定参考电压的电压。

5. 发明授权

US09911077B2 Persistent nodes for RFID 有权
公开(公告)号：US09911077B2
公开(公告)日：2018-03-06
申请号：US15413294
申请日：2017-01-23
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： G06K19/06 , G06K19/073 , G06K19/07 , H03K3/0233
CPC分类号： G06K19/073 , G06K19/0715 , G06K19/0723 , H03K3/0233
摘要： An RFID transponder in one embodiment comprises a radio frequency (RF) transceiver, processing logic coupled to the RF transceiver, a switch coupled to the processing logic, a tunneling device coupled to the switch and a differential sensing circuit having a first input coupled to the tunneling device and a second input coupled to a predetermined reference voltage. In one embodiment, the tunneling device can discharge to a voltage below the predetermined reference voltage.

6. 发明申请

US20160197652A1 RFID PROTOCOLS WITH NON-INTERACTING VARIANTS 审中-公开
公开(公告)号：US20160197652A1
公开(公告)日：2016-07-07
申请号：US14878996
申请日：2015-10-08
申请人： Ruizhang Technology Limited Company
发明人： John Stephen Smith
IPC分类号： H04B5/00 , G06K7/10 , H04W12/04
CPC分类号： H04B5/0062 , G06K7/01 , G06K7/10019 , G06K7/10257 , H04W12/04 , H04W12/06
摘要： In an RFID system having at least one tag and at least one reader, a tag and a reader can, in one embodiment, use a pair of keys, known to both the tag and the reader, to restrict the interaction of the tag and the reader so that tags having the pair of keys interact only with readers that use the pair of keys.

7. 发明授权

US09805227B2 Subset selection of RFID tags using light 有权
公开(公告)号：US09805227B2
公开(公告)日：2017-10-31
申请号：US14807844
申请日：2015-07-23
申请人： Ruizhang Technology Limited Company
发明人： Mark Alfred Hadley , James Harold Atherton , Jay Tu , Edward John Boling , John Stephen Smith
IPC分类号： H04Q5/22 , G06K7/10 , G06K19/073 , H02M7/217 , G06K19/077 , G06K7/00 , G06K19/07 , G11C5/14
CPC分类号： G06K7/10009 , G06K7/0008 , G06K7/10079 , G06K19/0701 , G06K19/0723 , G06K19/0728 , G06K19/073 , G06K19/077 , G06K19/07749 , G11C5/145 , H02M7/217
摘要： Methods and apparatuses for selecting a subset of RFID tags are provided in some embodiments. These methods and apparatuses utilize the susceptibility to light by persistent nodes found in passive tags. Light can be used to intentionally reduce persistence times in a particular subset tags or even an individual tag. Then, persistent nodes can be used as a selection criterion to distinguish previously illuminated tags from non-illuminated tags. In other embodiments, a power circuit receives a RF input source and generates a direct current (DC) output voltage. The circuit includes a bias circuit to supply a gate to source bias, which is independent of the DC output voltage. The circuit further includes a voltage multiplier circuit that is coupled to the bias circuit. The voltage multiplier circuit has MOS transistors with one transistor to receive the gate to source bias.

8. 发明授权

US09483671B2 Methods and apparatuses to identify devices 有权
标题翻译：识别设备的方法和设备
公开(公告)号：US09483671B2
公开(公告)日：2016-11-01
申请号：US14303520
申请日：2014-06-12
申请人： RUIZHANG TECHNOLOGY LIMITED COMPANY
发明人： John Stephen Smith , Curtis L. Carrender
IPC分类号： G06F17/30 , G06K7/10 , G06K7/00
CPC分类号： G06K7/10009 , G06K7/0008 , Y10S707/99931 , Y10S707/99933 , Y10S707/99945
摘要： Embodiments of the present invention include systems with Readers and Tags in which a Reader queries the Tags with a parameter that includes a level of probability of reply according to which the Tags individually and randomly decide whether or not to reply. In one embodiment, the Tags can switch between two states: A and B. The query command also specifies a state (A or B) so that only the Tags in the specified state can reply. After successfully sending the Tag identification data from a Tag to the Reader, the Tag switches to the other state from the specified state. In one embodiment, the operations about the two states are symmetric. In one embodiment, the Tags can remember the parameters used in a query so that a short form of query command can be used to repeat the query with the same query parameters.
摘要翻译：本发明的实施例包括具有读取器和标签的系统，其中读者使用包括答复概率级别的参数来查询标签，根据该级别，标签单独并随机地决定是否回复。在一个实施例中，标签可以在两个状态之间切换：A和B.查询命令还指定状态（A或B），使得仅指定状态的标签可以回复。标签识别数据从标签成功发送到读卡器后，标签将从指定状态切换到其他状态。在一个实施例中，关于两个状态的操作是对称的。在一个实施例中，标签可以记住在查询中使用的参数，使得可以使用简短形式的查询命令来重复具有相同查询参数的查询。

9. 发明申请

US20150332138A1 SUBSET SELECTION OF RFID TAGS USING LIGHT 审中-公开
公开(公告)号：US20150332138A1
公开(公告)日：2015-11-19
申请号：US14807844
申请日：2015-07-23
申请人： Ruizhang Technology Limited Company
发明人： Mark Alfred Hadley , James Harold Atherton , Jay Tu , Edward John Boling , John Stephen Smith
IPC分类号： G06K19/073 , G06K19/077 , H02M7/217
CPC分类号： G06K7/10009 , G06K7/0008 , G06K7/10079 , G06K19/0701 , G06K19/0723 , G06K19/0728 , G06K19/073 , G06K19/077 , G06K19/07749 , G11C5/145 , H02M7/217
摘要： Methods and apparatuses for selecting a subset of RFID tags are provided in some embodiments. These methods and apparatuses utilize the susceptibility to light by persistent nodes found in passive tags. Light can be used to intentionally reduce persistence times in a particular subset tags or even an individual tag. Then, persistent nodes can be used as a selection criterion to distinguish previously illuminated tags from non-illuminated tags. In other embodiments, a power circuit receives a RF input source and generates a direct current (DC) output voltage. The circuit includes a bias circuit to supply a gate to source bias, which is independent of the DC output voltage. The circuit further includes a voltage multiplier circuit that is coupled to the bias circuit. The voltage multiplier circuit has MOS transistors with one transistor to receive the gate to source bias.

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