Patent Family

MOSAID Patent Licensing Family

• Wireless Patent Portfolio
• Pseudo-SRAM Patent Portfolio
• DRAM-based patents
• SDRAM-based patents
• Multi-level DRAM patents
• Microcomponents patents
• Computational memory and graphics patents
• Embedded DRAM patents
• Networking patents

For more information on MOSAID patent licensing, please contact us.

Wireless Patent Portfolio	/\ Top

In February 2007, MOSAID purchased a portfolio of WiFi and WiMAX patents that firmly established the Company's patent licensing program in another of the world's largest and fastest growing technology markets. The portfolio includes patents that are essential to the 802.11 family of WLAN (or WiFi) standards, and the 802.16 family of WiMAX standards. Most of the world's laptop computers, handheld gaming devices, video game consoles, WiFi-enabled handsets and other wireless products/systems are designed to comply with these standards.

MOSAID's wireless portfolio consists of 20 issued patents in the United States, Japan, Germany, France, Great Britain and Canada, and three pending patents in the United States and Europe.

Pseudo-SRAM Patent Portfolio

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Pseudo-Static Random Access Memory (PSRAM) devices are used primarily in mobile consumer products such as cellular telephones, where high density, low-power memory chips are a key requirement. PSRAM memory chips combine a Dynamic RAM (DRAM) cell array for high density and low bit cost, with an SRAM interface to external devices. Cellular phones use PSRAM and Flash memory chips combined in multi-chip packages.

MOSAID's PSRAM patent portfolio consists of three United States patents, three Taiwanese patents and three Korean counterpart patents.

This first MOSAID patent group stems from the design of a 1M DRAM in the late 1980s. From this original design, three patent families evolved: the Lines Wordline Driver patents, the Foss et. Al. Vpp Pump patents and the Foss et. al. Bit Line Isolation Control patents.

These patents generally describe a static wordline driving technique powered by a regulated high voltage supply, as well as controlling bit line isolation devices with the regulated high voltage supply. These novel approaches have been adopted by the DRAM industry and have replaced the NMOS dynamic boosted word line approach. These inventions were first conceived in the late 1980s, resulting in strong priority dates. They now exist in a number of related U.S. and Japanese issued patents.

As a result of its continuing work in DRAM design, a second wave of inventions from the early 1990s resulted in an additional SDRAM-based patent group, with two families: the Delay Locked Loop patents, and the Data Output Latency Control patents.

With these patents, MOSAID pioneered the use of delay locked loop circuits and flexible ways of supporting selectable latencies in synchronous DRAMs – concepts which are once again gaining widespread acceptance as SDRAMs begin operating at bus speeds of 133 MHz and above.

These patents also exist as a number of issued and pending patents in Canada, the United States, Europe, Japan and Korea.

Multi-level DRAM patents

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MOSAID has also explored the possibility of storing more than one bit per DRAM cell and made significant contributions to the evolving world of multi-level DRAM. The multi-level DRAM patent group protects the now "proven-in-silicon" concept of storing and accessing a DRAM cell having more than one bit of information.

MOSAID and others in the industry pioneered this concept in the DRAM industry, while Intel recently introduced this concept within the flash memory industry.

Microcomponents patents

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MOSAID has exclusive licensing rights to a major portfolio of 50 U.S. patents and their foreign counterparts that relate primarily to microcomponents, which are complex digital or mixed-signal integrated circuits (ICs). Our microcomponents patent portfolio applies to devices such as:

• Digital Signal Processors (DSPs)
• Microcontrollers (MCUs) and microprocessors (MPUs)
• Application Specific Integrated Circuits (ASICs)
• System-on-Chip (SoC) devices
• Field Programmable Gate Arrays (FPGAs)
• Embedded memories

MOSAID has always been interested in third party innovations or patents which complement or add to the strength of its existing portfolio. As a result, MOSAID acquired the rights to the Computational RAM patents. This patent group includes concepts such as multiple processors embedded within a memory chip that perform massive parallel processing. MOSAID also acquired rights to a number of graphics accelerator patents related to these concepts.

Embedded DRAM patents

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Our continuing efforts in the increasingly important area of embedded DRAM applications have given rise to a number of patents dealing with embedded memory redundancy, driving word lines in embedded memory applications, as well as implementing embedded DRAM cells in a standard logic process.

The Wide Databus Architecture patents represent one such embedded DRAM innovation. This novel approach enables the transfer of large amounts of data in parallel for embedded DRAM system-on-a-chip applications.

MOSAID feels that embedded DRAM will play an increasingly important role in many networking applications, including routing, switching and classification.

Networking patents

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MOSAID holds a variety of networking-related patents spanning the areas of switching, encryption, and classification. Many of these deal with integration of memory to realize high performance and throughput. In the classification area there are a number of fundamental patents related to Content Addressable Memory (CAM), including an efficient DRAM-based cell, low power circuit techniques, and high speed pipelined architectures.