Portable terminal apparatus

What is this patent about?

’646 is related to the field of portable terminal devices, such as smartphones, that function as remote controllers for networked electronic appliances like televisions. The invention addresses the friction caused by power-saving sleep modes and security locks, which typically require a user to perform tedious authentication steps—such as entering a password or pattern—every time they want to perform a simple remote control action after a period of inactivity.

The underlying idea behind ’646 is to bypass the standard authentication barrier by dynamically modifying the lock screen based on the device’s environment and its state prior to entering sleep mode. By recognizing when a user is likely in a “remote control context,” the device can present functional control buttons directly on the lock screen. This allows for immediate interaction with external hardware without compromising the security of the rest of the device’s data, effectively treating the lock screen as a context-aware remote interface.

The claims of ’646 focus on a control logic that selects between three distinct display modes upon waking from a sleep state. The system evaluates two primary variables: whether a remote control application was active before the device went to sleep, and whether the device can currently establish a mutual communication link with the target external device or a specific access point. The independent claims specifically protect the mechanism of displaying functional control icons alongside a lock-release element only when both the prior state and current connectivity conditions are met.

In practice, the invention works by monitoring the wireless environment to determine if the user is within a trusted area, such as a home network. If the user was previously controlling a TV and the smartphone wakes up while still connected to the home access point, the display automatically populates with volume or channel buttons. If the user selects one of these icons, the processor immediately transmits the corresponding command over the wireless LAN without requiring the user to navigate through a password prompt or the home screen.

This approach differs from prior solutions by eliminating the binary choice between high security and high convenience. Traditional devices either require full authentication for every wake event or force the user to disable security entirely to maintain remote control fluidity. The ’646 patent provides a conditional bypass that uses network proximity and application history as a proxy for user intent, ensuring that remote control functionality is instantaneous while keeping the underlying operating system and personal data locked behind a secure wall.