{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9852672","patent":{"patent_number":"US-9852672","title":"Method and apparatus for controlling brightness in a portable terminal","assignee":null,"inventors":[],"filing_date":"2012-03-08T00:00:00.000Z","publication_date":"2017-12-26T00:00:00.000Z","cpc_codes":["G09G","G09G","G09G","G09G","G09G"],"num_claims":23,"abstract":"A method and an apparatus for controlling brightness in a portable terminal are provided. The method comprises measuring temperature according to a preset period, extracting a brightness value mapped to the measured temperature from a stored brightness table, and changing a brightness of the portable terminal to correspond to the extracted brightness value."},"analysis":{"summary":"The patent, titled \"Method and Apparatus for Controlling Brightness in a Portable Terminal\" (US-9852672), introduces an intelligent system for dynamically adjusting the display brightness of portable electronic devices. Its core innovation lies in moving beyond traditional ambient light sensing to incorporate the device's internal thermal state.\n\nThe primary problem this invention solves is the detrimental effect of excessive heat, particularly from the display, on a portable terminal's performance, battery life, and overall longevity. High brightness levels contribute significantly to heat generation, which can lead to thermal throttling, uncomfortable device temperatures, and accelerated component degradation.\n\nThe key technical approach involves a three-step process: First, the system continuously measures the device's internal temperature at preset intervals. Second, it references a pre-stored 'brightness table' which maps specific temperature values to optimized brightness settings. Third, it extracts the appropriate brightness value from this table and dynamically adjusts the portable terminal's display accordingly. This proactive, temperature-aware adjustment ensures the display operates at an optimal level that balances visibility with thermal efficiency.\n\nFrom a business perspective, this technology offers significant value. It enables manufacturers to produce more durable and reliable devices, reducing warranty costs and enhancing brand reputation. For consumers, it translates to extended battery life, consistent performance even under heavy load, and a longer-lasting investment. The market opportunity lies in integrating this intelligent thermal management into a wide range of portable terminals, from smartphones and tablets to wearables and specialized handheld devices, positioning products with superior thermal resilience as a key differentiator.","layman_explanation":"### What Problem Does This Solve?\nImagine your smartphone or tablet as a tiny, powerful computer working hard inside a very small box. When it works hard—like playing a video game, streaming a movie, or even just charging—it generates heat. A significant source of this heat comes from the screen, especially when it's very bright. This excess internal heat isn't just uncomfortable; it's a major problem for the device itself. It can cause the internal components to slow down (a process called 'thermal throttling'), drain the battery much faster, and over time, actually shorten the lifespan of expensive parts like the display and the main processor. Existing solutions, like ambient light sensors, only react to how bright your *surroundings* are, not how hot the *device itself* is getting. They don't prevent the internal heat buildup that can degrade performance and hardware.\n\n### How Does It Work?\nThe \"Method and Apparatus for Controlling Brightness in a Portable Terminal\" patent introduces a clever, proactive solution. Think of it like a smart thermostat for your device's screen. Instead of just sensing the light outside, this innovation has an internal thermometer that constantly checks the device's temperature. It takes these readings regularly, almost like a doctor checking your pulse. This internal temperature data is then fed into a 'brain' inside the device, which has a pre-programmed 'lookup table.' This table is essentially a rulebook that says: 'If the device is at X temperature, the screen brightness should be Y level to ensure optimal performance and prevent overheating.' So, if your phone starts getting warm, the system automatically finds the ideal, slightly lower brightness setting from its rulebook and adjusts the screen. It's not about making the screen too dim, but about finding the 'just right' brightness that keeps the device running efficiently without getting too hot. This process is automatic and seamless, so you might not even notice it happening, but your device will be silently working smarter.\n\n### Why Does This Matter?\nThis intelligent brightness control system matters significantly for several business reasons. Firstly, it directly addresses customer satisfaction. Users get a device that performs more consistently, without frustrating slowdowns or unexpected dimming caused by overheating. Secondly, it drastically improves product longevity. By reducing thermal stress on components, manufacturers can produce devices that last longer, leading to fewer warranty claims and a stronger reputation for quality. Thirdly, it contributes to better battery life. An optimized screen that isn't unnecessarily bright consumes less power, extending the time between charges. For businesses in the competitive portable electronics market, offering devices with superior durability, consistent performance, and extended battery life can be a powerful differentiator, attracting more customers and building brand loyalty. It's about delivering a better, more reliable product experience that directly impacts the bottom line.\n\n### What's Next?\nThe principles behind this patent are foundational for the next generation of 'self-aware' portable devices. We can expect to see this technology become standard, potentially evolving with machine learning to predict thermal events and adapt even more intelligently to user habits and environmental factors. This innovation opens doors for even more compact and powerful devices, as thermal constraints become less limiting. For investors, this signals a shift towards 'smart components' that add intrinsic value through enhanced durability and efficiency, making devices more sustainable and appealing in the long run.","technical_analysis":"The \"Method and Apparatus for Controlling Brightness in a Portable Terminal\" (US-9852672) patent describes a sophisticated approach to display management that integrates internal thermal dynamics, a significant departure from purely ambient light-based solutions. This innovation targets the pervasive issue of heat generation in portable terminals, particularly from the display subsystem, which can compromise performance and longevity.\n\n**Technical Architecture:**\nThe system's architecture is fundamentally a feedback control loop. It comprises:\n1.  **Temperature Sensor(s):** One or more thermal sensors (e.g., thermistors, integrated SoC temperature diodes) strategically placed within the portable terminal to accurately measure the internal temperature. These sensors provide continuous or periodic readings.\n2.  **Processing Unit:** Typically, the device's main SoC or a dedicated microcontroller, responsible for executing the brightness control algorithm. It receives temperature data, performs lookups, and sends commands.\n3.  **Memory Module:** Stores the crucial 'brightness table' (or 'brightness profile'). This table is a calibrated mapping of internal temperature ranges (or specific temperature values) to corresponding optimal display brightness levels.\n4.  **Display Control Unit:** The hardware responsible for driving the display panel, which receives brightness commands from the processing unit and adjusts the display's actual luminosity (e.g., backlight PWM for LCDs, pixel voltage/current for OLEDs).\n\n**Implementation Details and Algorithm Specifics:**\nThe core algorithm operates in a continuous cycle:\n1.  **Periodic Temperature Measurement:** The processing unit initiates a temperature reading from the sensor(s) at a 'preset period'. This period is configurable, balancing the need for responsiveness with power consumption and computational overhead. For instance, a period of a few seconds might be sufficient for gradual thermal changes, while a shorter period might be needed for rapid thermal events.\n2.  **Brightness Value Extraction:** The measured temperature value (T_current) is then used as an index or input to query the 'stored brightness table'. This table is typically populated during device calibration and manufacturing, based on extensive thermal modeling and empirical testing across various operating conditions and display panel characteristics. The table's design can be discrete (e.g., specific brightness levels for 30°C, 35°C, 40°C) or continuous, requiring interpolation for values between defined points.\n3.  **Dynamic Brightness Adjustment:** Once the corresponding optimal brightness value (B_optimal) is extracted, the processing unit instructs the display control unit to change the display's brightness to this new level. This adjustment is often implemented with a smooth transition (e.g., a fade-in/out over a few hundred milliseconds) to avoid jarring changes for the user.\n\n**Integration Patterns:**\nThis system can be integrated at various levels: within the display driver firmware, as part of the operating system's power management framework, or even within a dedicated thermal management IC. For comprehensive adaptive brightness, this technology can work in conjunction with existing ambient light sensors (ALS), creating a multi-modal control system that optimizes brightness based on both external lighting and internal thermal conditions. This allows for a more nuanced and intelligent user experience.\n\n**Performance Characteristics:**\n*   **Thermal Resilience:** By proactively reducing display heat contribution, the system helps maintain the overall device temperature within safe operating limits, mitigating thermal throttling of the SoC and other components.\n*   **Extended Lifespan:** Reduced thermal stress on the display panel, battery, and other sensitive components directly translates to an extended operational lifespan for the portable terminal.\n*   **Improved Battery Efficiency:** Optimizing brightness based on thermal conditions often means reducing unnecessary high brightness, leading to significant power savings and extended battery life.\n*   **Consistent User Experience:** Prevents abrupt, discomforting dimming often associated with unmanaged overheating, leading to a more stable and predictable device behavior.\n\nCode-level implications would involve sensor drivers, a lookup algorithm for the brightness table, and an API for the display driver to accept dynamic brightness commands. The calibration process for the brightness table is critical, requiring careful characterization of thermal profiles for each device model and display type. This technical approach provides a robust and intelligent foundation for next-generation portable terminal display management.","business_analysis":"The \"Method and Apparatus for Controlling Brightness in a Portable Terminal\" (US-9852672) patent presents a compelling business proposition by addressing critical pain points in the portable electronics market: device longevity, performance consistency, and user satisfaction. This intelligent brightness control system offers significant market opportunities and competitive advantages.\n\n**Market Opportunity Size:**\nThe global market for portable terminals, encompassing smartphones, tablets, wearables, and various handheld devices, is vast and continuously expanding. Display components are central to all these devices, and thermal management remains a universal challenge. Any innovation that can extend device lifespan, improve battery performance, and enhance user experience taps into a multi-billion dollar market. The direct and indirect costs associated with device degradation, warranty claims, and customer dissatisfaction due to overheating are substantial, making a solution like this highly valuable across the entire portable electronics ecosystem.\n\n**Competitive Advantages:**\nIntegrating this patented technology offers manufacturers a distinct competitive edge:\n1.  **Differentiated Product Offering:** Devices featuring this intelligent thermal-aware brightness control can be marketed as more durable, reliable, and higher-performing, standing out in a crowded market.\n2.  **Reduced Warranty Costs:** By mitigating thermal stress, the invention can significantly reduce the incidence of component failures (especially display and battery degradation), leading to lower warranty claims and repair expenses.\n3.  **Enhanced Brand Reputation:** Consumers increasingly value devices that last longer and perform consistently. Implementing this technology can foster a reputation for quality and innovation.\n4.  **Improved Battery Life Claims:** Optimized brightness management directly translates to better battery efficiency, allowing manufacturers to advertise superior battery endurance, a key purchasing factor for consumers.\n\n**Revenue Potential:**\nRevenue can be generated through licensing this patent to original equipment manufacturers (OEMs) or by integrating it into proprietary product lines. Given the pervasive nature of display brightness control in portable devices, licensing fees could be substantial, based on per-unit royalties or tiered agreements. Furthermore, companies that integrate this technology can command premium pricing for their devices due to the added value in durability and performance.\n\n**Business Models:**\n*   **Licensing Model:** The patent holder can license the technology to multiple device manufacturers, generating recurring revenue streams.\n*   **Integrated Product Model:** A device manufacturer could acquire or exclusively license this patent to embed the technology directly into their own products, gaining a proprietary advantage.\n*   **Component Supplier Model:** A display component manufacturer could integrate this intelligence into their display modules, offering 'smart displays' as a premium product to device assemblers.\n\n**Strategic Positioning:**\nThis innovation strategically positions a company at the forefront of intelligent device management and sustainable electronics. As consumer awareness of electronic waste and device longevity grows, solutions that inherently extend product life will become increasingly important. This patent allows companies to align with sustainability goals while delivering tangible performance benefits.\n\n**ROI Projections:**\nInvesting in or licensing this technology promises a strong return on investment through several channels: reduced post-sale support costs, increased market share due to superior product offerings, and the potential for premium pricing. The long-term value lies in establishing a reputation for innovation and reliability, fostering customer loyalty and repeat purchases in a highly competitive industry.","faqs":[{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal is a patent (US-9852672) that describes an innovative system for managing the display brightness of portable electronic devices. Unlike traditional methods that primarily rely on ambient light sensors, this invention introduces a sophisticated approach that incorporates the device's internal temperature as a key factor in brightness adjustment.\n\nAt its core, this technology aims to optimize both user experience and device longevity by dynamically adapting screen luminosity. It recognizes that a device's internal thermal state significantly impacts performance and component health.\n\nThe patent outlines a method where the portable terminal continuously monitors its own temperature. This temperature data is then used to consult a pre-configured 'brightness table,' which maps specific temperature ranges to optimal brightness settings. The system then adjusts the display brightness accordingly, ensuring that the screen contributes minimally to internal heat buildup while still providing adequate visibility. This intelligent control helps in maintaining a balanced operational environment for the device.","question":"What is Method and Apparatus for Controlling Brightness in a Portable Terminal?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal operates through a three-step intelligent process. First, the system periodically measures the internal temperature of the portable terminal using embedded thermal sensors. This continuous monitoring provides real-time data on the device's thermal state.\n\nSecond, the measured temperature value is then used to reference a pre-stored 'brightness table' or 'lookup table.' This table is a crucial component, as it contains calibrated mappings of various internal temperature ranges to specific, optimized display brightness values. This calibration is typically performed during the device's manufacturing, based on extensive testing and thermal modeling.\n\nFinally, once the appropriate brightness value is extracted from the table, the system commands the display control unit to change the brightness of the portable terminal's screen to correspond to this extracted value. This dynamic adjustment ensures that the display's power consumption and heat generation are optimized relative to the device's current thermal load, promoting cooler operation and extending component life. This proactive thermal management is what sets this innovation apart from simpler brightness controls.","question":"How does Method and Apparatus for Controlling Brightness in a Portable Terminal work?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal primarily solves the pervasive problem of excessive heat generation in portable electronic devices, particularly the heat contributed by the display. Modern portable terminals, with their powerful processors and vibrant screens, generate significant internal heat, especially during intensive use like gaming, video streaming, or fast charging.\n\nThis excess heat can lead to several critical issues: performance throttling (where the device intentionally slows down to prevent damage), accelerated degradation of internal components (like the battery and display panel), reduced battery life, and overall diminished user experience due to uncomfortable device temperatures or unexpected dimming. Prior art solutions, such as ambient light sensors, only address external lighting conditions and are 'blind' to the device's internal thermal state, thus failing to mitigate these heat-related problems effectively.\n\nBy intelligently linking display brightness to internal temperature, this invention proactively manages the display's thermal contribution, ensuring the device operates within healthier temperature ranges. This prevents overheating-induced performance drops and extends the overall lifespan of the portable terminal.","question":"What problem does Method and Apparatus for Controlling Brightness in a Portable Terminal solve?"},{"answer":"The patent for the Method and Apparatus for Controlling Brightness in a Portable Terminal (US-9852672) does not list specific inventors in the provided data. However, patents are typically assigned to the company or organization that employs the inventors and funds the research and development. In many cases, the assignee (the entity to whom the patent rights are transferred) is a major technology company.\n\nWhile the inventors' names are not provided, the innovation itself reflects a deep understanding of portable electronics design, thermal engineering, and user experience optimization. Such complex systems are often the result of collaborative efforts by teams of engineers and researchers.\n\nThe development of this technology underscores the industry's continuous effort to overcome fundamental challenges in device design, ensuring that advancements in performance do not come at the cost of reliability or longevity. The focus on intelligent thermal management for displays is a testament to the sophistication required in modern portable terminal engineering.","question":"Who invented Method and Apparatus for Controlling Brightness in a Portable Terminal?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal offers several significant benefits for both manufacturers and end-users of portable electronic devices.\n\nFirstly, it **enhances device longevity**. By proactively managing the heat generated by the display, the system reduces thermal stress on critical components like the display panel, battery, and processor. This directly translates to a longer operational lifespan for the device, reducing the need for premature replacements or repairs.\n\nSecondly, it leads to **improved battery efficiency and extended battery life**. An intelligently adjusted screen that avoids unnecessary high brightness, especially when the device is already warm, consumes less power. This optimization extends the time between charges and contributes to the overall health of the battery over its lifespan.\n\nThirdly, it ensures **consistent device performance**. By preventing the display from exacerbating overheating conditions, the system helps mitigate thermal throttling of the device's processor. This means the portable terminal can sustain higher performance levels for longer periods, even during demanding tasks like gaming or video editing, leading to a smoother and more reliable user experience. These benefits collectively make devices incorporating this patent more robust and user-friendly.","question":"What are the key benefits of Method and Apparatus for Controlling Brightness in a Portable Terminal?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal distinguishes itself significantly from prior art by moving beyond purely external environmental sensing to incorporate the device's internal thermal state. Prior art solutions for display brightness control primarily rely on ambient light sensors (ALS).\n\nAmbient light sensors adjust screen brightness based on the external light intensity, ensuring visibility in different environments. However, they are 'blind' to the internal temperature of the device. This means if a portable terminal is running hot due to intensive processing, a bright ambient light might still dictate a high screen brightness, thereby adding more heat and worsening the thermal situation. This can lead to performance degradation, battery drain, and component damage.\n\nIn contrast, this patent's innovation utilizes internal temperature measurement as a primary input. It dynamically adjusts brightness based on a pre-calibrated 'brightness table' that maps temperatures to optimal brightness levels. This proactive, temperature-aware approach allows the system to intelligently reduce the display's heat contribution when the device is already warm, preventing overheating rather than just reacting to external light. This fundamental difference enables a more holistic optimization of device performance, longevity, and battery life, setting it apart from reactive, external-only brightness controls.","question":"How is Method and Apparatus for Controlling Brightness in a Portable Terminal different from prior art?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal (US-9852672) has the potential to significantly impact several industries centered around portable electronic devices.\n\nThe most direct impact will be on the **Consumer Electronics Industry**, particularly manufacturers of smartphones, tablets, laptops, e-readers, and smartwatches. Integration of this technology can provide a competitive edge by offering devices with superior thermal management, extended battery life, and enhanced durability.\n\nBeyond general consumer devices, the **Automotive Industry** could benefit, especially for in-car infotainment systems and heads-up displays, where devices operate in varying temperature extremes and require consistent performance and longevity. Similarly, the **Industrial and Enterprise Handheld Device Industry** (e.g., ruggedized tablets, barcode scanners, mobile POS systems) would see improvements in reliability and operational uptime, as these devices often operate in harsh or demanding environments. The **Healthcare Technology** sector, for portable medical devices with displays, could also leverage this for critical reliability.\n\nUltimately, any sector relying on portable terminals with displays that generate heat and require consistent, long-lasting performance stands to gain from the intelligent thermal management offered by this innovation.","question":"What industries will Method and Apparatus for Controlling Brightness in a Portable Terminal impact?"},{"answer":"The patent for the Method and Apparatus for Controlling Brightness in a Portable Terminal, identified as US-9852672, has specific key dates associated with its lifecycle.\n\nIts **Filing Date** was **2012-03-08**. This is the date when the patent application was officially submitted to the patent office, marking the beginning of the examination process and establishing priority for the invention.\n\nThe patent was subsequently **published** on **2017-12-26**. The publication date typically signifies when the patent document becomes publicly accessible, allowing others to review the details of the invention. While 'granted' information isn't explicitly provided, publication often occurs after the patent has been examined and approved, or as part of a general publication process at a certain stage of examination.\n\nThese dates are important for understanding the timeline of the innovation, its position relative to other technologies in the field, and its current legal status. The period between filing and publication (or grant) allows for the examination of the patent claims against prior art and ensures the invention meets all patentability requirements.","question":"When was Method and Apparatus for Controlling Brightness in a Portable Terminal filed/granted?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal (US-9852672) has a wide range of commercial applications across various portable electronic devices, primarily focusing on enhancing their reliability, performance, and user experience.\n\n**Smartphones and Tablets:** This is the most obvious application. Manufacturers can integrate this technology to offer devices with extended battery life, more consistent performance during heavy use (e.g., gaming, video editing), and a longer overall lifespan, differentiating their products in a highly competitive market.\n\n**Wearable Devices:** Smartwatches, fitness trackers, and augmented reality (AR) glasses often have limited space for thermal dissipation. This patent's technology can ensure these devices remain comfortable to wear and perform reliably without overheating, crucial for user adoption and safety.\n\n**Laptops and Portable PCs:** While larger than phones, ultra-thin laptops still face thermal challenges. Integrating this system can optimize screen brightness to prevent heat buildup, contributing to sustained performance and battery longevity.\n\n**Specialized Handheld Devices:** This includes industrial scanners, mobile point-of-sale (POS) systems, and medical diagnostic tools. For these devices, reliability and uptime are paramount, and intelligent thermal management from the display can significantly reduce maintenance costs and improve operational efficiency. The ability to manage display heat proactively makes devices more robust and dependable in demanding commercial environments.","question":"What are the commercial applications of Method and Apparatus for Controlling Brightness in a Portable Terminal?"},{"answer":"The Method and Apparatus for Controlling Brightness in a Portable Terminal lays a strong foundation for future advancements in adaptive display technology and device thermal management. Several key developments can be expected.\n\nOne major area is the **integration of machine learning and AI**. Instead of relying solely on a static, pre-calibrated brightness table, future systems could dynamically learn and adapt the temperature-brightness mappings based on individual user habits, application usage patterns, and real-time environmental conditions. This would lead to highly personalized and predictive thermal management, anticipating overheating before it occurs.\n\nAnother development could be **multi-modal sensing and control**. The system might combine internal temperature data not just with ambient light, but also with other contextual information like device orientation, proximity sensing, and even user biometric data (e.g., if wearing AR glasses) to achieve an even more nuanced and efficient brightness adjustment. This could create a truly intelligent display that optimizes for comfort, visibility, and thermal health simultaneously.\n\nFurthermore, as devices become more interconnected, we might see **cross-device thermal coordination**. A smartphone, for instance, could communicate its thermal state to a paired smartwatch or AR headset, allowing for synchronized thermal management across an entire ecosystem of portable terminals. This patent's principles are crucial for enabling the next generation of truly smart, resilient, and energy-efficient portable electronics, paving the way for more compact designs and sustained high performance.","question":"What are the future developments expected for Method and Apparatus for Controlling Brightness in a Portable Terminal?"}],"topics":["Method and Apparatus for Controlling Brightness in a Portable Terminal","portable terminal brightness control","temperature-aware display","device thermal management","smartphone brightness optimization","miniaturization","increasing","computational"],"tech_cluster":null},"seo":{"title":"Method and Apparatus for Controlling Brightness in a Portable Terminal - Patent US-9852672","description":"Discover how the Method and Apparatus for Controlling Brightness in a Portable Terminal intelligently adjusts screen brightness based on internal temperature. Enhance device longevity and battery life.","keywords":["Method and Apparatus for Controlling Brightness in a Portable Terminal","portable terminal brightness control","temperature-aware display","device thermal management","smartphone brightness optimization","display longevity","battery life extension","patent US-9852672","adaptive brightness","mobile device innovation"]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9852672","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9852672","citation_suggestion":"Patentable. \"Method and apparatus for controlling brightness in a portable terminal\" (US-9852672). https://patentable.app/patents/US-9852672","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9852672","json":"https://patentable.app/api/llm-context/US-9852672","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:50:02.955Z"}