摘要:
A method of adjusting operation of an RFID tag for an environment is described. The method includes sensing an aspect of the environment. The method also includes sending an instruction, based on the sensed aspect of the environment, to the RFID tag. The instruction encoded in a TUNE command. The instruction causes the RFID tag to perform a specific act. The specific act includes one of the following: turning a sub-circuit of the RFID tag's semiconductor chip on; turning a sub-circuit of the RFID tag's semiconductor chip off; altering a bias current within a sub-circuit of the RFID tag's semiconductor chip; altering a bias voltage within a sub-circuit of the RFID tag's semiconductor chip; and, adjusting a threshold within a sub-circuit of the RFID tag's semiconductor chip.
摘要:
RFID tags and chips for RFID tags are capable of being inventoried in one or more early attempts. These tags are capable of then refraining from participating in one or more subsequent inventorying attempts. In some embodiments refraining is performed solely by the tag, while in others it is guided by the RFID reader. In some embodiments, an inventoried indicator in the tag becomes updated upon backscattering. The updated value is used by the tag to recognize a subsequent attempt, and thus refrain from participating in it. This permits the subsequent attempt to be used more intensively for inventorying the more elusive, harder-to-read tags, especially in more demanding scenarios.
摘要:
RFID reader systems, components, software and methods are provided for use premises that have RFID-tagged items. When a person comes onto an enclosure of the premises already carrying a personal tag, the incoming code of that personal tag is read. When later the person exits the enclosure, they could be transporting some of the items that have actionable codes. The actionable codes can be read, but the incoming code can be removed from them, before the actionable codes are acted upon, in Point-of-Sale or Electronic Article Surveillance systems.
摘要:
RFID readers transmit a Quiet Technology (QT) command to RFID tags causing at least one of the tags to transition between a private profile and a public profile. When a tag is inventoried in the private profile, it replies to the reader with contents from its private memory. When a tag is inventoried in the public profile, it replies to the reader with contents from its public memory, where the contents of the public memory may be a subset and/or modified version of the private memory contents, or entirely different altogether. The tag's profile can be switched again by another QT command from the reader, or following a loss of power at the tag. An access password and/or a short-range mechanism may be employed to allow only authorized readers to transition tag profiles or interrogate the private memory contents of tags in the public profile.
摘要:
RFID tags, ICs for RFID tags, and methods are provided. In some embodiments, an RFID tag includes a memory with multiple sections, and a processing block. The processing block may map one of these sections, or another of these sections, for purposes of responding to a first command from an RFID reader. As such, an RFID tag can operate according to the data stored in the section mapped at the time. In some embodiments, a tag can even transition from mapping one of the sections to mapping another of the sections. This can amount to the tag exhibiting alternative behaviors, and permits hiding data on the tag.
摘要:
RFID reader systems, readers, components, software and methods can inventory RFID tags in one or more early attempts. Then they can facilitate the inventoried RFID tags to refrain from participating in one or more subsequent inventorying attempts. In some embodiments, an inventoried indicator in the tag becomes updated upon backscattering. The updated value is used by the tag to recognize a subsequent attempt, and thus refrain from participating in it. This permits the subsequent attempt to be used more intensively for inventorying the more elusive, harder-to-read tags, especially in more demanding scenarios.
摘要:
A number of designs for differential floating gate nonvolatile memories and memory arrays utilize differential pFET floating gate transistors to store information. Methods of implementing such memories and memory arrays together with methods of operation and test associated with such memories and memory arrays are presented.
摘要:
RFID readers transmit a Quiet Technology (QT) command to RFID tags causing at least one of the tags to transition between a private profile and a public profile. When a tag is inventoried in the private profile, it replies to the reader with contents from its private memory. When a tag is inventoried in the public profile, it replies to the reader with contents from its public memory, where the contents of the public memory may be a subset and/or modified version of the private memory contents, or entirely different altogether. The tag's profile can be switched again by another QT command from the reader, or following a loss of power at the tag. An access password and/or a short-range mechanism may be employed to allow only authorized readers to transition tag profiles or interrogate the private memory contents of tags in the public profile.
摘要:
RFID tags, ICs for RFID tags, and methods are provided. In some embodiments, an RFID tag includes a memory with multiple sections, and a processing block. The processing block may map one of these sections, or another of these sections, for purposes of responding to a first command from an RFID reader. As such, an RFID tag can operate according to the data stored in the section mapped at the time. In some embodiments, a tag can even transition from mapping one of the sections to mapping another of the sections. This can amount to the tag exhibiting alternative behaviors, and permits hiding data on the tag.
摘要:
A semiconductor chip for an RFID tag is described. The semiconductor chip including wireless transceiver and processing block circuitry to receive and put into effect a wirelessly received instruction encoded in a TUNE command. The instruction commanding the semiconductor chip to perform at least one specific act. The semiconductor chip having circuitry to perform the at least one specific act. The circuitry being coupled to the processing block. The circuitry and its corresponding specific act identified by at least one of the following: enablement circuitry to turn a sub-circuit within the semiconductor chip on; disablement circuitry to turn a sub-circuit within the semiconductor chip off; current bias circuitry to alter a bias current within a sub-circuit of the semiconductor chip; voltage bias circuitry to alter a bias voltage within a sub-circuit of the semiconductor chip; threshold adjustment circuitry to adjust a threshold within a sub-circuit of the semiconductor chip.