System and Method for Preventing Phone Functionality while Driving

• US 20160044575A1
• Filed: 10/23/2015
• Published: 02/11/2016
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Aswin Rajeevalochana, Radha Raghunathan
• Original Assignee: Aswin Rajeevalochana, Radha Raghunathan
• Inventors: Rajeevalochana, Aswin, Raghunathan, Radha
• Granted Patent: US 9,363,734 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60Q 1/54 for indicating speed outside of the vehicle
• CPC Class Codes: H04M 1/724 User interfaces specially adapted for cordless or mobile telephones
• CPC Class Codes: H04W 4/027 using movement velocity, acceleration information
• CPC Class Codes: H04W 48/04 based on user or terminal location or mobility data, e.g. moving direction, speed
• CPC Class Codes: H04W 8/245 from a network towards a terminal

Abstract

An app designed to prevent using distracting phone functionality, including texting, on a mobile phone while driving a vehicle is disclosed. The app detects and measure attributes including the phone'"'"'s orientation and change of orientation and expresses them in a coordinate system relative to the direction of motion of the vehicle. If the phone orientation is found to be consistent with a change in direction of the vehicle, or the axis of rotation of the phone is found to be consistent with itself over time, the distracting phone functionality is disabled.

Claims

1. A non-transitory machine-readable storage medium designed to prevent a user using distracting phone functionality while driving a vehicle, comprising:

machine readable instructions, stored on a mobile phone memory or in the cloud, that enable said mobile phone to perform functions comprising;

detecting a local gravity vector acting on said mobile phone;

detecting a direction of motion of said mobile phone in a plane orthogonal to said local gravity vector;

detecting an orientation of said mobile phone in a frame of reference relative to said direction of motion of said mobile phone; and

combining said local gravity vector, said direction of motion and said orientation of said mobile phone to determine whether or not said mobile phone is being moved in concert with a steering device when said steering device is being moved to steer said vehicle in motion, and

if said mobile phone is determined as being moved in concert with said steering device when said steering device is being moved to steer said vehicle in motion, preventing distracting phone functionality by disabling said mobile phone'"'"'s distracting phone functionality, and continuing to prevent said distracting phone functionality for a further predetermined period of time.

2. The non-transitory machine-readable storage medium of claim 1 further comprising instructions for performing functions such that said step of combining further comprises:

recording a first and a second vehicular change of orientation, said vehicular change of orientation being approximated as a component of a change of orientation of said mobile phone in a plane orthogonal to said local gravity vector;

recording a first and a second directional orientation of said mobile phone, said directional orientation of said mobile phone being approximated as said component of said orientation of said mobile phone in a plane that is oriented perpendicular to said direction of motion of said cell phone and parallel to said gravity vector, and wherein said first directional orientation is recorded contemporaneously with said first vehicular change of direction, and said second directional orientation is recorded contemporaneously with said second vehicular change of direction; and

if both said first and second vehicular change of orientation are equal, and said first and second directional orientation of said phone are equal, determining that said mobile phone is being moved in concert with a steering device when said steering device is being moved to steer said vehicle in motion.

3. The non-transitory machine-readable storage medium of claim 1 further comprising instructions for performing functions such that said step of combining further comprises:

recording a first and second relative change of orientation of said mobile phone, said relative change of orientation being a change of orientation expressed in said relative coordinate system having said direction of motion as an axis, and wherein said relative change of orientation may be expressed as a change angle about phone rotation axis; and

if the phone rotation axis of said first relative change of orientation is equal to the phone rotation axis of the phone rotation axis of said second relative change of orientation, determining that said mobile phone is being moved in concert with a steering device when said steering device is being moved to steer said vehicle in motion.

4. The non-transitory machine-readable storage medium of claim 1 wherein said detecting a local gravity vector comprises accessing a signal from a Hall magnetic field detector resident on said mobile phone.

5. The non-transitory machine-readable storage medium of claim 1 wherein said detecting a direction of motion comprises accessing a signal from a MEMs accelerometer resident on said mobile phone.

6. The non-transitory machine-readable storage medium of claim 1 wherein said detecting an orientation of said mobile phone comprises accessing a signal from a Coriolis vibratory gyroscope resident on said mobile phone.

7. The non-transitory machine-readable storage medium of claim 1 wherein said preventing distracting phone functionality further comprises administering, after determining that said mobile phone is being moved in concert with said steering device, a dexterity test requiring two fingers on the phone and only if said dexterity test fails, proceeding to disabling said mobile phone'"'"'s distracting phone functionality.

8. A method of preventing a user using distracting phone functionality while driving a vehicle, comprising:

providing a smartphone having an accelerometer and a gyroscope;

providing a vehicle;

obtaining, using said accelerometer a direction of motion of said vehicle;

obtaining, using said gyroscope, a change of orientation of said smartphone;

expressing said change of orientation of said smartphone as a change angle about a phone rotation vector in a relative-to-motion coordinate system have one axis coincident with said direction of motion of said vehicle; and

if said phone rotation vector is constant over a measuring period of time, disabling distracting functionality on said smartphone.

9. The method of claim 8 wherein said measuring period of time is a period of 1 second or more.

10. A method of preventing a user using distracting phone functionality while driving a vehicle, comprising:

providing a smartphone having an accelerometer and a gyroscope;

providing a vehicle;

obtaining, using said accelerometer a direction of motion of said vehicle;

obtaining, using said accelerometer and said gyroscope a vehicle change of direction of said vehicle at one or more times expressed as an angle about an axis in a coordinate system fixed relative to the earth;

obtaining, using said gyroscope, a smartphone orientation of said smartphone at said same one or more times;

expressing said smartphone orientation as an angle with respect to a phone rotation vector in a relative-to-motion coordinate system have one axis coincident with said direction of motion of said vehicle; and

if said smartphone orientation and a corresponding one of said vehicle change of directions, both taken at a same time, are equivalent on a predetermined number of occasions, disabling distracting functionality on said smartphone.

11. The method of claim 10 wherein said predetermined number of occasions is two.