Abstract: Example systems and methods for controlling communication protocols for multi-protocol interrogators are provided herein. In various implementations a multi-protocol interrogator is provided that is capable of exchanging data with a transponder according to a plurality of protocols and is configured to transmit a control signal indicating a preferred protocol from the plurality of protocols over a radio interface. Multi-protocol transponders are also provided that are configured to receive and recognize the control signal, and respond only on the signaled, preferred protocol.

Abstract: The present disclosure is directed to a system and method for interrogating radio frequency tags. In some implementations, a method includes A method includes successively polling, for a specified number of inventory cycles, a plurality of Radio Frequency Identification (RFID) tags in a first state. At least a first subset of the plurality of RFID tags transitions from the first state to a second state in response to the poll. After the specified number of inventory cycles, a command is transmitted to update at least a second subset of the plurality of RFID tags from the second state to first state. The plurality of RFID tags are subsequently polled after transmitting the update command.

Abstract: The present disclosure is directed to a system and method for interrogating radio frequency tags. In some implementations, a method includes A method includes successively polling, for a specified number of inventory cycles, a plurality of Radio Frequency Identification (RFID) tags in a first state. At least a first subset of the plurality of RFID tags transitions from the first state to a second state in response to the poll. After the specified number of inventory cycles, a command is transmitted to update at least a second subset of the plurality of RFID tags from the second state to first state. The plurality of RFID tags are subsequently polled after transmitting the update command.

Abstract: An I/O system where there is provided a Task Control Processor which provides for the scheduling of the different central processors for the highest priority processes to be run. When an initiate I/O operation is detected, the respective processor is released from the process that it is currently running and can be assigned to the next highest priority process. When the requested I/O operation has been completed, the Task Control Processor is signalled so that the Task Control Processor can put the requesting process back into the priority list of processes to be run by the main central processors.