Patent No. US10219020 (titled "Portable terminal, information processing apparatus, content display system and content display method") on Aug 30, 2018. The application was issued on Feb 26, 2019.
’020 is related to the field of content display systems and methods for coordinating the viewing experience between a portable terminal and an external information device. The background context involves the increasing prevalence of internet-connected televisions and mobile devices, where users often face cumbersome manual steps when attempting to transition a viewing session from a small mobile screen to a larger home display.
The underlying idea behind ’020 is to create a seamless handoff mechanism that transfers the active state of a content session—such as a specific URL or broadcast channel—from a mobile device to a larger display with a single user action. By transmitting identification information and then automatically reconfiguring the mobile device to act as a remote control, the invention eliminates the need for the user to manually search for or re-enter content details on the secondary device.
The claims of ’020 focus on a display apparatus equipped with both a digital broadcast receiver and a network communication module for internet access. The independent claims specifically cover the hardware and logic required to receive a content identifier from an external mobile terminal, fetch the corresponding internet content, and automatically swap the current broadcast video for the new internet-sourced video while simultaneously accepting operation instructions from that same mobile terminal.
In practice, the system works by establishing a communication link between the mobile terminal and the display apparatus, often triggered by a specific button press on the mobile interface. Once the identifier is sent, the display apparatus terminates its current task to prioritize the incoming content. A key implementation detail is the dual-input capability, where the display apparatus remains responsive to both the mobile terminal’s relayed instructions and a traditional infrared remote controller.
This approach differs from prior solutions by automating the transition and the subsequent control logic in one workflow. Rather than just acting as a passive receiver, the display apparatus in ’020 integrates the mobile device into its control hierarchy, allowing for the transfer of user operation histories or session states. This ensures that dynamic content, such as authenticated web pages or interactive media, maintains its specific state during the transition between screens.
In the mid-2000s when ’020 was filed, mobile handsets and stationary display systems typically operated as independent silos with distinct network interfaces and content delivery pipelines. At a time when multimedia consumption on portable devices was typically implemented using localized tuners or low-bandwidth mobile data, the integration between mobile terminals and large-format displays commonly relied on basic infrared remote control protocols or physical cable connections for simple screen mirroring. Technical constraints in wireless handshaking and session management made the seamless transition of active network resources between heterogeneous devices non-trivial, often requiring manual re-entry of resource identifiers or redundant data fetches by the secondary display hardware.
The disclosed invention achieves a meaningful technical advancement by establishing a coordinated architectural link between a portable terminal and a stationary information processing apparatus to facilitate dynamic content redirection. By implementing a structural solution where a mobile device captures and transmits specific resource identifiers and state information to a secondary display system, the architecture enables a transition from localized, small-screen viewing to high-resolution output without losing the user's navigational context. This integration overcomes the technical constraint of isolated device operation, enabling a capability where the portable terminal functions as an intelligent gateway that offloads data-intensive rendering tasks to stationary hardware while maintaining control over the session state.
The patent contains a total of 30 claims, with claims 1 and 25 serving as the independent claims. These independent claims focus on a display apparatus equipped with multiple receivers and processors designed to transition from displaying broadcast television content to displaying internet-based video content triggered by an identifier and control instructions received from an external mobile terminal, while also maintaining functionality for a separate remote controller and tracking user operation history. The dependent claims serve to further specify the hardware components, such as DLNA devices and wireless LAN modules, define the nature of the mobile terminal and the video identifiers, and detail specific operational states, display modes, and data storage capabilities of the system.
Definitions of key terms used in the patent claims.
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