Communication device and system including communication device
AssigneeOMRON Corporation
InventorYoshimitsu Nakano
Life of this patent
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Abstract
A communication device includes a communicator that communicates with an RF tag in a non-contact manner, a communication unit that exchanges data with a host device, and a controller that controls the communicator and the communication unit. Every time the communicator sequentially reads data from the RF tag that passes a communication-feasible region near the communicator at regular time intervals or irregular time intervals, the controller updates first data to be exchanged with the host device by the communication unit so as to include the read data. Also, the controller updates second data to be exchanged with the host device by the communication unit to a value different from a previous value in association with timing with which the first data is updated.
Claims10
A communication device comprising:
- a communicator comprising a transmitter and a receiver configured to communicate with a radio frequency (RF) tag in a non-contact manner;
- a communication interface that exchanges data with a host device;
- and
- a controller configured to perform operations comprising operations to control the communicator and the communication interface,
- wherein
- in response to the communicator sequentially reading data from the RF tag that passes a communication-feasible region near the communicator at regular time intervals or irregular time intervals, the controller is configured to perform operations comprising:
- beginning updating first data to be exchanged with the host device by the communication interface so as to comprise the read data;
- in response to beginning updating the first data to comprise the read data, notifying the host device that the first data is being updated by updating second data, which notifies the host device that the first data is being updated;
- and
- in response to completing updating the first data to comprise the read data, notifying the host device that the first data is accessible, the first data to be exchanged with the host device by the communication interface to a value different from a previous value in association with a timing with which the first data is updated.
A system comprising:
- a communication device;
- and
- a host device, wherein
- the communication device comprises:
- a communicator comprising a transmitter and a receiver configured to communicate with a radio frequency (RF) tag in a non-contact manner;
- a communication interface that exchanges data with the host device;
- and
- a controller configured to perform operations comprising operations to control the communicator and the communication interface,
- in response to the communicator sequentially reading data from the RF tag that passes a communication-feasible region near the communicator at regular time intervals or irregular time intervals, the controller is configured to perform operations comprising:
- beginning updating first data to be exchanged with the host device by the communication interface so as to comprise the read data;
- in response to beginning updating the first data to comprise the read data, notifying the host device that the first data is being updated by updating second data, which notifies the host device that the first data is being updated;
- and
- in response to completing updating the first data to comprise the read data, notifying the host device that the first data is accessible, the first data to be exchanged with the host device by the communication interface to a value different from a previous value in association with a timing with which the first data is updated, and
- the host device acquires the first data in response to the update of the value of the second data.
Dependencies are inferred from the claim text.