# US 11,940,388 B2 · Method for improving usability and accuracy for physiological measurement

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- Number: US 11,940,388 B2
- Document ID: US11940388B2
- Status: Granted
- Kind: B2
- Application number: 16/494,313
- Filed: 2018-03-16
- Published: 2020-03-12
- Granted: 2024-03-26
- Earliest claimed: 2017-03-17
- Assignees: Ixensor Co., Ltd.
- Applicants: iXensor CO., LTD.
- Inventors: Yenyu Chen; An Cheng Chang; Tai I Chen; Su Tung Yang; Chih Jung Hsu; Chun Cheng Lin; Min Han Wang; Shih Hao Chiu
- Web page: https://patentgrep.com/patent/US11940388B2

## CPC

- G01N 21/8483: {Investigating reagent band (test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04)}
- A61B 5/14532: {for measuring glucose, e.g. by tissue impedance measurement}
- A61B 5/1455: using optical sensors, e.g. spectral photometrical oximeters
- A61B 5/150358: {Strips for collecting blood, e.g. absorbent}
- A61B 5/157: {Devices} characterised by integrated means for measuring characteristics of blood
- A61B 5/6898: {Portable consumer electronic devices, e.g. music players, telephones, tablet computers}
- A61B 2560/0443: Modular apparatus
- A61B 2562/0295: Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157
- G01N 21/78: producing a change of colour
- G01N 2021/7759: {Dipstick; Test strip}
- G01N 2201/0221: Portable; cableless; compact; hand-held
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Example methods are provided to improve placement of an adaptor (210,220) to a mobile computing device (100) to measure a test strip (221) coupled to the adaptor (220) with a camera (104) and a screen (108) on a face of the mobile computing device (100). The method may include displaying a light area on a first portion of the screen (108). The first portion may be adjacent to the camera (104). The light area and the camera (104) may be aligned with a key area of the test strip (221) so that the camera (104) is configured to capture an image of the key area. The method may further include providing first guiding information for a user to place the adaptor (210,220) to the mobile computing device (100) according to a position of the light area on the screen (108).

## Claims

### Claim 1

A method to improve placement of an adaptor to a mobile computing device to measure a test strip coupled to the adaptor with a camera and a screen on a face of the mobile computing device, the method comprising:
determining whether a model of the mobile computing device is a first known model based on stored data accessible by the mobile computing device;
in response to a determination that the model is not the first known model:
guiding a user to generate a track from the camera to the screen;
displaying a light area on a first portion of the screen based on the track;
guiding the user to move the light area to a position on the screen aligned with the camera, wherein the light area and the camera are aligned with a key area of the test strip so that the camera is configured to capture an image of the key area; and
guiding the user to place the adaptor to the mobile computing device according to the position of the light area on the screen.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first portion is configured as a light source to illuminate the key area of the test strip.

### Claim 3 (depends on 1)

The method of claim 1, further comprising guiding the user to cover the camera.

### Claim 4 (depends on 3)

The method of claim 3, wherein guiding the user to generate the track from the camera to the screen is in response to determining that the camera is covered.

### Claim 5 (depends on 4)

The method of claim 4, wherein the track maintains a geometry relationship with the screen.

### Claim 6 (depends on 4)

The method of claim 4, further comprising detecting the track on the screen.

### Claim 7 (depends on 6)

The method of claim 6, further comprising, in response to the detected track being within a predetermined range on the screen, displaying the light area on the first portion of the screen based on the detected track.

### Claim 8 (depends on 7)

The method of claim 7, further comprising guiding the user to move the light area on the screen so that the light area aligns with the camera.

### Claim 9 (depends on 1)

The method of claim 1, further comprising:
after the determination that the model of the mobile computing device is not the first known model:
associating the position of the light area with the model of the mobile computing device;
categorizing the model of the mobile computing device to be a second known model; and
storing the second known model in a database accessible by the mobile computing device.