Reader Communication with Contact Lens Sensors and Display Device

Abstract

A reader for communicating with both an eye-mountable device and a display device is provided. The reader can transmit radio frequency power to a tag that is part of the eye-mountable device. The reader can communicates with the tag using a first protocol. Communicating with the tag can include having the reader request data from the tag and receive the requested data from the tag. The reader can process the received data. The reader can store the processed data. The reader can communicates with the display device using a second protocol, where the first and second protocols can differ. Communicating with the display device can include having the reader transmit the stored data to the display device. The display device can receive the transmitted data, process the transmitted data, and generate one or more displays including the transmitted and/or processed data.

What is claimed is: 
     
         1 . A method, comprising:
 transmitting, by a reader, radio frequency (RF) power to a tag, wherein the tag is part of an eye-mountable device;   communicating with the tag, by the reader, using a first protocol, wherein communicating with the tag comprises:
 requesting data from the tag, and 
 receiving the requested data from the tag; 
   processing the received data from the tag at the reader;   storing the processed data using the reader; and   communicating with a display device, by the reader, using a second protocol, wherein the communicating with the display device comprises transmitting the stored data to the display device, and wherein the first protocol differs from the second protocol.   
     
     
         2 . The method of  claim 1 , wherein communicating with the display device comprises receiving a request for the stored data from the display device. 
     
     
         3 . The method of  claim 1 , wherein the reader is within a predetermined distance from the tag when transmitting RF power to the tag. 
     
     
         4 . The method of  claim 1 , wherein communicating with the tag further comprises:
 sending a request for an identifier (ID) of the tag using the first protocol; and   in response to the request for the ID of the tag, receiving a message comprising the ID of the tag.   
     
     
         5 . The method of  claim 1 , wherein requesting data from the tag comprises requesting one or more sensor measurements from the tag. 
     
     
         6 . The method of  claim 5 , wherein processing the received data from the tag comprises:
 determining a tear-film glucose concentration based on the one or more sensor measurements.   
     
     
         7 . The method of  claim 6 , further comprising:
 determining a blood glucose concentration based on the tear-film glucose concentration.   
     
     
         8 . The method of  claim 7 , further comprising:
 displaying the blood glucose concentration on the display device.   
     
     
         9 . The method of  claim 5 , wherein the reader transmits the RF power to the tag for at least a predetermined period of time before requesting the one or more sensor measurements. 
     
     
         10 . The method of  claim 1 , wherein the first protocol is a Radio-Frequency Identification (RFID) protocol, and wherein the second protocol is a Bluetooth protocol. 
     
     
         11 . The method of  claim 1 , wherein the reader is part of a head-mountable device (HMD). 
     
     
         12 . A non-transitory computer-readable storage medium having stored thereon program instructions that, upon execution by a processor of a computing device, cause the computing device to perform functions comprising:
 transmitting radio frequency (RF) power to a tag, wherein the tag is part of an eye-mountable device;   communicating with the tag using a first protocol, wherein communicating with the tag comprises:
 requesting data from the tag, and 
 receiving the requested data from the tag; 
   processing the received data from the tag;   storing the processed data; and   communicating with a display device using a second protocol, wherein the communicating with the display device comprises transmitting the stored data to the display device, and wherein the first protocol differs from the second protocol.   
     
     
         13 . The non-transitory computer-readable storage medium of  claim 12 , wherein the computing device is within a predetermined distance from the tag when transmitting RF power to the tag. 
     
     
         14 . The non-transitory computer-readable storage medium of  claim 12 , wherein requesting data from the tag comprises requesting one or more sensor measurements from the tag, and wherein processing the received data from the tag comprises determining a tear-film glucose concentration based on the one or more sensor measurements. 
     
     
         15 . The non-transitory computer-readable storage medium of  claim 14 , wherein the computing device transmits the RF power to the tag for at least a predetermined period of time before requesting the one or more sensor measurements. 
     
     
         16 . The non-transitory computer-readable storage medium of  claim 12 , wherein the first protocol is a Radio-Frequency Identification (RFID) protocol, and wherein the second protocol is a Bluetooth protocol. 
     
     
         17 . A computing device, comprising:
 an antenna;   a processor; and   a non-transitory computer readable medium storing instructions thereon that, when executed by the processor, cause the computing device to perform functions comprising:
 transmitting radio frequency (RF) power to a tag using the antenna, wherein the tag is part of an eye-mountable device; 
 communicating with the tag using a first protocol, wherein communicating with the tag comprises:
 requesting data from the tag, and 
 receiving the requested data from the tag; 
 
 processing the received data from the tag; 
 storing the processed data; and 
 communicating with a display device using a second protocol, wherein communicating with the display device comprises transmitting the stored data to the display device, and wherein the first protocol differs from the second protocol. 
   
     
     
         18 . The computing device of  claim 18 , wherein the computing device is within a predetermined distance from the tag when transmitting RF power to the tag. 
     
     
         19 . The computing device of  claim 18 , wherein requesting data from the tag comprises requesting one or more sensor measurements from the tag, wherein the computing device transmits the RF power to the tag for at least a predetermined period of time before requesting the one or more sensor measurements, and wherein processing the received data from the tag comprises determining a tear-film glucose concentration based on the one or more sensor measurements. 
     
     
         20 . The computing device of  claim 18 , further comprising at least one transceiver configured to communicate using at least the first protocol and the second protocol, wherein the first protocol is a Radio-Frequency Identification (RFID) protocol, and wherein the second protocol is a Bluetooth protocol.