Cloud-integrated system for testing digital ICs using a microcontroller with wireless connectivity

Abstract

A system (100) for testing digital integrated circuits (ICs), the system (100) comprising: • a processing unit (1) configured to control the entire testing process; • a wireless communication unit (2) operatively coupled to the processing unit (1) and configured to establish a connection to a remote cloud database (10); • a data acquisition unit (3) operatively coupled to the wireless communication unit (2) and configured to retrieve truth tables corresponding to one or more ICs from the cloud database (10); • a test execution unit (4) operatively coupled to the processing unit (1) and configured to: generate input signals based on the retrieved truth tables and apply them to the IC (20) under test; receive output signals from the IC (20) under test; compare the received output signals with the expected output signals from the truth tables; and to detect functional correctness or error conditions in the IC (20); • a result display unit (5) configured to display the test results to a user via a visual or serial interface; • an operating mode selection unit (6) configured to activate: a manual mode for user-specific IC tests; and an automatic mode for detecting and testing ICs based on available data; and • a storage unit (7) configured to temporarily store the retrieved truth tables and test results.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to the field of electronic test systems, and more particularly to a cloud-integrated, portable, and dynamically updatable system for testing digital integrated circuits (ICs) using a wireless-enabled microcontroller. The invention finds applications in electronic diagnostics, training, prototyping, and industrial quality assurance. BACKGROUND OF THE INVENTION

[0002] The subject matter discussed in the "Background" section should not be assumed to be prior art merely by virtue of its mention in the "Background" section. Likewise, it should not be assumed that a problem mentioned in the Background section or related to the subject matter of the Background section has already been recognized in the prior art. The subject matter of the Background section merely presents various approaches, which may also be inventions in their own right.

[0003] Integrated circuits (ICs) are critical components of modern electronic devices, enabling the operation of complex electronic systems through miniaturized logic and memory elements. Accurate and reliable testing of ICs is essential at various stages, including development, production, deployment, maintenance, and recycling, to ensure functional integrity, quality assurance, and optimal performance. As the complexity of ICs continues to increase with advances in semiconductor technology, efficient and accessible test mechanisms have become even more important.

[0004] Traditionally, IC test systems have been designed primarily for high-volume industrial manufacturing environments. Such systems often feature automated test equipment (ATE) that uses sophisticated hardware-software configurations to perform detailed validation processes. However, these systems involve extremely high initial investments, typically exceeding $2,000 per unit, and incur ongoing operating costs. Furthermore, these systems require highly specialized technical expertise for operation, configuration, and debugging, limiting their access to large companies and specialized service providers.

[0005] A major disadvantage of conventional systems is their rigidity. Test configurations are often hard-coded into the system firmware or require manual updates through complex programming, resulting in a lack of scalability and adaptability. Every time a new IC needs to be tested or a change in test parameters is required, extensive reprogramming and sometimes even hardware reconfiguration are necessary. This lack of flexibility represents a bottleneck, particularly for fast-paced industries, educational institutions, and hobbyist applications where rapid prototyping and testing of disparate ICs is common.

[0006] Another challenge lies in the offline nature of traditional testers. Without cloud integration, these testers cannot utilize the latest available data sets or remote management capabilities. Consequently, users must manually update tester software or rely on outdated libraries, resulting in extended downtime, limited IC compatibility, and inefficient workflows.

[0007] Furthermore, conventional IC testers are typically large, non-portable systems that rely on stable laboratory conditions and a continuous power supply. This makes them unsuitable for on-site diagnostics, educational demonstrations, or resource-constrained environments where portability and ease of use are critical.

[0008] The collective impact of these challenges is a gap in accessibility. Hobbyists, educational institutions, small businesses, repair shops, and e-waste recycling facilities often cannot afford or effectively use conventional IC testers. This gap not only slows down technological innovation at the grassroots level but also hinders efficient electronic maintenance and sustainability initiatives.

[0009] Accordingly, there is a significant unmet need for a lightweight, cost-effective, cloud-based, dynamically updatable IC test system that: • Provides real-time access to an extensible database of IC truth tables; • Operation does not require any special technical knowledge; • Supports over-the-air firmware updates to incorporate new ICs and test methods; • Works efficiently in offline scenarios with fallback mechanisms; • Portable for use in the classroom, on-site and in the workshop; • Reduced environmental impact through better repair and recycling options.

[0010] The present invention aims to address all these existing deficiencies by introducing an intelligent, modular and user-friendly digital IC tester with integrated cloud-based data management and wireless communication capabilities.

[0011] The information disclosed in this Background section is provided solely for the purpose of facilitating an understanding of the background of the invention and may therefore contain information that is not prior art and that is already known to a person skilled in the art in this country. SUMMARY

[0012] Before describing the present systems and methods, it should be noted that this application is not limited to the systems and methods described, as there may be several possible embodiments not expressly shown in this disclosure. It should also be understood that the terminology used in the description is for the purpose of describing the particular versions or embodiments only and is not intended to limit the scope of the present application.

[0013] The present invention provides a cloud-integrated system for testing digital ICs using a microcontroller with wireless connectivity.

[0014] The present invention addresses the shortcomings of conventional IC testers by providing a modular, cost-effective, and cloud-integrated system. This system is designed to dynamically retrieve IC truth tables from a cloud database, thus eliminating the dependence on hard-coded firmware updates. Unlike conventional testers, the proposed system is configurable in real time, enabling testing of a large and growing library of ICs without requiring hardware or firmware changes.

[0015] The invention comprises several functional units that work together: a processing unit for managing the entire test process; a wireless communication unit for connecting to the cloud database; a data acquisition unit for retrieving and processing truth table data; a test execution unit for performing logical tests on the IC under test; a result display unit for communicating the results to the user; a mode selection unit that offers manual and automatic test options; and a storage unit for temporarily storing data. Furthermore, the system features an over-the-air update mechanism that enables seamless software improvements, security patches, and the addition of new IC support remotely without physical intervention.

[0016] The system's architecture is designed for portability and simplicity. It operates on low-voltage power supplies such as USB or rechargeable batteries, allowing testing in diverse environments such as classrooms, workshops, repair shops, and remote locations. The design philosophy ensures that even non-professionals such as students, hobbyists, and technicians can easily operate the system without requiring extensive technical knowledge.

[0017] Real-time cloud integration significantly improves scalability. New IC models can be easily integrated by updating the cloud database, instantly expanding the system's testing capabilities. This eliminates the traditional hurdles associated with updating hardware-based testers. Furthermore, the inclusion of a local fallback database ensures that the system remains operational even in the absence of an internet connection, ensuring test continuity and reliability.

[0018] The over-the-air update functionality increases the longevity and future-proofing of the system. Users can benefit from continuous improvements, bug fixes, and feature enhancements without the need for manual intervention or service center visits. This drastically reduces maintenance costs and downtime and increases operational efficiency.

[0019] The system also features advanced diagnostic capabilities that enable pin-level fault detection. It can precisely identify and report gate-level or pin-specific malfunctions, providing detailed insights previously only available with sophisticated and expensive industrial testers. This diagnostic capability is critical for effective repair, maintenance, and training applications.

[0020] In summary, the present invention provides a robust, intelligent, and scalable solution for digital IC testing. Combining cloud connectivity, dynamic configuration, portability, and cost-effectiveness, it democratizes access to advanced testing technologies, empowering a wide range of users, from educational institutions to small businesses, and promoting innovation and sustainability in the electronics ecosystem.

[0021] The present invention overcomes the disadvantages of conventional IC test equipment by providing a modular, low-cost, cloud-integrated system. The system enables dynamic retrieval of IC truth tables from a cloud database, eliminating the need for hard-coded firmware updates. Tests can be performed manually or automatically, with real-time feedback displayed via user interfaces. The system is compact, portable, can be operated with low-voltage power sources, including batteries, and supports over-the-air (OTA) updates. This improves usability in educational institutions, on-site repairs, prototyping labs, and resource-constrained environments. BRIEF DESCRIPTION OF THE DRAWING

[0022] To clarify various aspects of some embodiments of the present invention, a more detailed description of the invention will be given by reference to specific embodiments illustrated in the accompanying drawings. It is understood that these drawings show only illustrative embodiments of the invention and are therefore not to be considered limiting its scope. The invention will be described and explained with additional specificity and detail through the use of the accompanying drawings.

[0023] In order that the advantages of the present invention may be readily understood, a detailed description of the invention is discussed below in conjunction with the accompanying drawings, which, however, should not be construed as limiting the scope of the invention to the accompanying drawings, in which: Fig. shows a block diagram of the cloud-integrated system (100) for testing digital ICs using a microcontroller with wireless connectivity. DETAILED DESCRIPTION

[0024] The present invention relates to a cloud-integrated system (100) for testing digital ICs using a microcontroller with wireless connectivity.

[0025] Fig. shows a block diagram of the cloud-integrated system (100) for testing digital ICs using a microcontroller with wireless connectivity.

[0026] The present invention will now be described in detail with reference to its various components and their functionalities

[0027] The present invention overcomes the significant limitations associated with conventional digital IC testers by introducing a modular, low-cost, cloud-integrated, and highly adaptable test system. Unlike conventional testers that rely on static, hard-coded truth tables embedded in firmware and require cumbersome updates and hardware changes, the present invention utilizes cloud-based dynamic truth table retrieval. This ensures that the system is highly scalable, easily upgradeable, and compatible with a large and growing number of IC devices without requiring changes to the underlying hardware configuration.

[0028] The system (100) comprises several specialized units that work together: a processing unit (1) that orchestrates all operations; a wireless communication unit (2) for establishing secure connections to a cloud database (10); a data acquisition unit (3) for retrieving updated IC truth tables; a test execution unit (4) for applying logic tests to the IC under test (20); a result display unit (5) for transmitting test results; a mode selection unit (6) for switching between manual and automatic test modes; a storage unit (7) for local data storage; and an OTA update unit (8) for remote firmware updates.

[0029] Dynamic truth table retrieval via the wireless communication unit (2) allows the system to seamlessly adapt to new IC models without the need to update the system's firmware or circuitry. By retrieving the latest configuration files from the cloud database (10), users can instantly add support for new ICs, change test parameters, or incorporate updated logic without requiring technical expertise in embedded programming. This capability transforms the system into a future-proof platform that evolves with technological advances in digital electronics.

[0030] The test execution unit (4) plays a crucial role by performing comprehensive logic verification at the gate and pin level. By applying all relevant input combinations to the IC under test (20) and capturing the corresponding outputs, the system can accurately identify functional correctness, detect open or shorted faults, and even isolate defective pins or internal gates. Such detailed diagnostic capabilities, previously available only in expensive industrial testers, are now available in a very compact and affordable form.

[0031] User interaction with the system is simplified by a versatile results display unit (5). Depending on design preferences, results can be displayed on LCD panels or LED displays, or transmitted via a serial terminal to a connected computer or mobile device. Test status, pass / fail indicators, pin error reports, and other diagnostic data are easily accessible, allowing the system to be used even by people with minimal technical knowledge.

[0032] The operating mode selection unit (6) offers the possibility to select two operating modes: • In manual mode, the user manually enters the IC identifier, after which the corresponding truth table is retrieved and used for testing. • In automatic mode, the system scans the connected devices, independently identifies them based on their input / output behavior, and performs the tests accordingly, minimizing human intervention and increasing the efficiency of batch testing environments.

[0033] The system's hardware architecture is deliberately designed for low power consumption and portability. Powered by a standard USB interface or a rechargeable battery (30), the device can be used in laboratories, classrooms, repair centers, field service, and remote locations. Its small footprint and minimal environmental requirements are in stark contrast to conventional bulky test equipment, which requires stable, controlled environments.

[0034] A key innovation is the ability to update over-the-air (OTA), enabled by the OTA Update Unit (8). Firmware patches, performance improvements, the integration of new features, and security updates can be deployed remotely, keeping the system stable and up-to-date throughout its lifecycle without requiring maintenance. This drastically reduces maintenance costs and extends the product's practical lifespan.

[0035] Given that internet access is variable, the invention also incorporates a local fallback database (11). Should the wireless connection become unavailable, the system automatically switches to a locally cached version of the IC truth tables stored in the memory unit (7). This ensures uninterrupted IC testing and maintains service quality even under difficult conditions.

[0036] Overall, the invention addresses several critical factors: affordability, scalability, portability, ease of use, environmental sustainability, and future viability. It democratizes access to advanced IC testing technology, enabling educational institutions, small industrial companies, prototyping labs, e-waste recyclers, and electronics enthusiasts to perform high-quality testing at a fraction of the traditional cost. The invention offers a robust, intelligent, and highly adaptable solution that redefines digital IC testing for the modern age.

[0037] Referring to Fig. 1 discloses a system (100) for testing digital ICs. The system (100) comprises: Processing Unit (1): This is configured to manage all operations, including data acquisition, test execution, mode switching, OTA updates, and interaction with display units. It controls timing, logical validation, and communication protocols. Wireless Communication Unit (2): Responsible for establishing a secure wireless connection to a cloud database (10) via Wi-Fi, Bluetooth, or equivalent protocols. This unit facilitates the dynamic retrieval of updated IC truth tables and ensures that the system remains scalable without hardware changes. Data acquisition unit (3): Retrieves the truth table for a selected IC from the cloud database (10). It parses the data and prepares it for execution by the test execution unit (4). Test execution unit (4): Applies logical input combinations to the IC under test (20) via GPIO interfaces, reads the output responses, compares the outputs with the expected values ​​of the truth table, and determines functional correctness. It identifies pass / fail conditions and pin-specific errors. Result display unit (5): Displays test results to the user via visual indicators such as an LCD display, LED arrays, or serial terminal output. The results can include pass / fail status, error location, and diagnostic information. Mode selector switch (6): Allows selection between manual mode, in which an IC identification code is entered manually, and automatic mode, in which the system independently identifies and tests connected ICs. Storage unit (7): Stores operational data, including cached truth tables, temporary test results, firmware updates, and system logs. Over-the-Air (OTA) Update Unit (8): Allows the system to receive software / firmware updates remotely to provide security patches, feature enhancements, and new IC support without physical access. Local fallback database (11): Provides a backup set of truth tables for offline operation, enabling test continuity in the event of network outages. IC under test (20): The digital IC under test, connected via standard pinouts using GPIO. Power supply (30): A low-voltage power source, preferably USB or battery powered, which improves portability and usability in remote locations. Advantages of the invention: • Dynamic cloud integration: Truth tables can be updated remotely without changing the firmware. • Cost-benefit ratio: The system costs less than $36 compared to conventional testing devices. • Portability: Lightweight and battery operated, ideal for field testing. • Ease of use: Suitable for non-professionals, training institutions and repair technicians. • Extensibility: Unlimited IC support potential through cloud database updates. • Pin-level fault detection: Advanced diagnostics to identify gate-level or pin-specific faults. • Environmentally friendly: Energy-saving operation and less electronic waste through extended IC life testing. • Remote Management: Supports OTA updates and remote testing functions.

[0038] Industrial Applicability: This invention is particularly suitable for: • Educational institutes: Practical learning tools for logic design and electronics. • Electronics prototyping labs: Rapid IC validation during development cycles. • Repair and maintenance centers: Fast on-site diagnosis of faulty digital ICs. • Small and medium-sized manufacturing enterprises (SMEs): Batch testing of ICs at low cost. • DIY and Maker Communities: Affordable tools for project validation. • E-waste recycling facilities: Identification of reusable ICs from discarded electronics.

Claims

[1] A system (100) for testing digital integrated circuits (ICs), the system (100) comprising: • a processing unit (1) configured to control the entire testing process; • a wireless communication unit (2) operatively coupled to the processing unit (1) and configured to establish a connection to a remote cloud database (10); • a data acquisition unit (3) operatively coupled to the wireless communication unit (2) and configured to retrieve truth tables corresponding to one or more ICs from the cloud database (10); • a test execution unit (4) operatively coupled to the processing unit (1) and configured to: generate input signals based on the retrieved truth tables and apply them to the IC (20) under test; receive output signals from the IC (20) under test; compare the received output signals with the expected output signals from the truth tables; and to detect functional correctness or error conditions in the IC (20); • a result display unit (5) configured to display the test results to a user via a visual or serial interface; • an operating mode selection unit (6) configured to activate: a manual mode for user-specific IC tests; and an automatic mode for detecting and testing ICs based on available data; and • a storage unit (7) configured to temporarily store the retrieved truth tables and test results. [2] The system (100) of claim 1, wherein the wireless communication unit (2) is configured to access the cloud database (10) via Wi-Fi, Bluetooth, or other wireless protocols. [3] The system (100) of claim 1, wherein the cloud database (10) comprises a structured data file, a spreadsheet, or other internet-accessible database format. [4] The system (100) of claim 1, wherein the processing unit (1) is configured to dynamically perform truth table data parsing to support testing of new IC models without requiring firmware changes. [5] The system (100) of claim 1, wherein the test execution unit (4) is configured to perform pin-level fault isolation and generate fault reports indicating defective pins or gates of the IC (20) under test. [6] The system (100) of claim 1, wherein the result display unit (5) comprises an LCD display, LED displays, or a serial output to a remote terminal. [7] The system (100) of claim 1, wherein the mode selection unit (6) is configured to allow a user to manually enter an IC identification code or to enable automatic recognition based on available truth tables. [8] The system (100) of claim 1, wherein the system (100) further comprises a local fallback database (11) to enable offline testing when a wireless connection is not available. [9] The system (100) of claim 1, wherein the system (100) is powered by a low voltage power supply (30) and is portable so that it can be used on-site or in the classroom. [10] The system (100) of claim 1, wherein the system (100) further comprises an over-the-air (OTA) update unit (8) for remotely updating the software or firmware.

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