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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7471144 | Low distortion class-D amplifier A low distortion class-D amplifier. The amplifier comprises a power supply terminal for receiving power, an amplification stage, and an output stage. The amplification stage receives an input signal and generates a ramp signal. Further more, the amplification stage ... | 12/30/2008 |
| 7466104 | System and method for balancing cells in a battery pack with selective bypass paths A system and method for cell balancing with smart low-voltage control circuit. The cell balancing system comprises a plurality of battery cells, an external bypass path for each cell, an internal bypass path for each cell, an input terminal receiving an enable signa... | 12/16/2008 |
| 7446516 | DC/DC converter with improved stability The DC/DC converter according to one embodiment includes a switch, an inductor, a capacitor, a resistor, and a voltage divider. The switch is coupled to the input voltage. The inductor is used for coupling the first switch to an output node of the DC/DC converter so... | 11/04/2008 |
| 7424623 | Personal computer integrated with personal digital assistant A personal computer (PC) adapted to function as a personal digital assistant (PDA) includes: a central processing unit (CPU) responsive to a control signal to load a first operating system or a second operating system, wherein the first operating system is run by th... | 09/09/2008 |
| 7421480 | Personal computing environment using mozilla A smart card enabled mobile personal computing environment system stores a user's personalized, fully functional, computing environment in a smart card. The user to specifies information required to configure the client to the user's preferred personal computing env... | 09/02/2008 |
| 7391237 | Robust and economic solution for FPGA bitfile upgrade A system for FPGA (Field Programmable Gate Array) upgrade includes: an FPGA, a FLASH memory and a CPLD. The FLASH memory includes a first section configured to store a workable version of bit files for the FPGA and a second section configured to store a backup versi... | 06/24/2008 |
| 7391191 | Switching resistance linear regulator architecture A switching resistance linear regulator. The regulator comprises an output terminal producing a regulated output voltage, a first comparator, a second comparator, a first sourcing circuit coupled to the output terminal, and a first sinking circuit coupled to the out... | 06/24/2008 |
| 7359998 | Low-power CD-ROM player with CD-ROM subsystem for portable computer capable of playing audio CDs without supply energy to CPU A low-power audio CD player for portable computers permits operation of the CD-ROM subsystem when power is not being supplied to the computer subsystem. In one embodiment of the invention, the computer subsystem comprises a system CPU, a digital-audio generating cir... | 04/15/2008 |
