# US 2013/0157645 A1 · Cross domain notification

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- Number: US 2013/0157645 A1
- Document ID: US20130157645A1
- Status: Published application
- Kind: A1
- Application number: 13/770,112
- Filed: 2013-02-19
- Published: 2013-06-20
- Earliest claimed: 2010-10-01
- Assignees: ViaSat, Inc.
- Inventors: Steven R. Hart; Ty Lindteigen; Phil Mar; Christopher Paul Wren
- Web page: https://patentgrep.com/patent/US20130157645A1

## CPC

- H04W 12/02: Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
- G06F 8/65: Updates (security arrangements therefor G06F21/57)
- G06F 21/53: by executing in a restricted environment, e.g. sandbox or secure virtual machine
- H04W 12/086: using security domains
- H04M 1/724: User interfaces specially adapted for cordless or mobile telephones
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)

## Abstract

A method for a mobile communication device to indicate activity associated with an operating domain includes establishing a plurality of operating domains for the mobile communication device each operating as an independent virtual machine. The method also includes providing a trusted indicator at the mobile communication device for indicating activity associated with a high-side domain. The method also includes providing an input on the mobile communication device for switching from a low-side domain to the high-side domain. The method also includes providing a trusted element for the mobile communication device that is independent of either the high-side domain or the low-side domain. The trusted element may be configured to receive a signal from the input for switching from the low-side domain to the high-side domain and to perform user authentication for switching from the low-side domain to the high-side domain.

## Claims

### Claim at position 1

-18. (canceled)

### Claim 19

A method of preparing a mobile communication device such that a user can securely switch between operating domains of the mobile communication device, the method comprising:
providing the mobile communication device having a plurality of operating domains each operating as an independent virtual machine, wherein at least one of the operating domains is a high-side domain and at least one of the operating domains is a low-side domain, the high-side domain being a secure domain and the low-side domain being an unsecure domain;
providing a trusted indicator at the mobile communication device to indicate activity associated with the high-side domain, the trusted indicator indicating at least one of an incoming call, an incoming text, or a new email message directed to the high-side domain, the activity indicated by activating a user notification;
providing an input on the mobile communication device for switching from the low-side domain to the high-side domain, the input configured as an input only device that is activated by user input.

### Claim 20 (depends on 19)

The method of claim 19, wherein the user notification activated by the trusted indicator is a light emitting diode (LED) on the mobile communication device.

### Claim 21 (depends on 19)

The method of claim 19, wherein the input on the mobile communication device for switching from the low-side domain to the high-side domain includes a hard-key press.

### Claim 22

A mobile communication device configured to operate in multiple domains, the mobile communication device comprising:
a processing module configured to run in a plurality of operating domains, each operating domain configured as an independent virtual machine, wherein at least one of the operating domains is a high-side domain and at least one of the operating domains is a low-side domain, the high-side domain being a secure domain and the low-side domain being an unsecure domain; and
a trusted indicator to provide an indication of activity associated with the high-side domain, the activity including at least one of an incoming call, an incoming text message, or a new email message, the trusted indicator configured to activate a user notification to indicate the activity.

### Claim 23 (depends on 22)

The mobile communication device of claim 22, wherein the user notification activated by the trusted indicator is an LED on the mobile communication device.

### Claim 24 (depends on 22)

The mobile communication device of claim 22, further comprising an input that includes a hard-key press for switching between the low-side domain and the high-side domain.