Electrical computers and digital processing systems: support – Computer power control – Power conservation
Reexamination Certificate
2001-11-26
2004-09-14
Browne, Lynne H. (Department: 2116)
Electrical computers and digital processing systems: support
Computer power control
Power conservation
C713S324000
Reexamination Certificate
active
06792551
ABSTRACT:
The present invention relates to computer systems and more particularly to reducing the amount of power consumed by an electronic device, such as a processor, in a low power state.
BACKGROUND
Computer systems are becoming increasingly pervasive in our society, including everything from small handheld electronic devices, such as personal data assistants and cellular phones, to application-specific electronic components, such as set-top boxes and other consumer electronics, to medium-sized mobile and desktop systems to large workstations and servers. Computer systems typically include one or more processors. A processor manipulates and controls the flow of data in a computer by executing instructions. To provide more powerful computer systems for consumers, processor designers strive to continually increase the operating speed of the processor. Unfortunately, as processor speed increases, the power consumed by the processor tends to increase as well. Historically, the power consumed by a computer system has been limited by two factors. First, as power consumption increases, the computer tends to run hotter, leading to thermal dissipation problems. Second, the power consumed by a computer system may tax the limits of the power supply used to keep the system operational, reducing battery life in mobile systems and diminishing reliability while increasing cost in larger systems.
The present invention addresses this and other problems associated with the prior art.
REFERENCES:
patent: 5784628 (1998-07-01), Reneris
patent: 5905994 (1999-05-01), Hori et al.
patent: 6085330 (2000-07-01), Hewitt et al.
patent: 6189107 (2001-02-01), Kim et al.
Browne Lynne H.
Yanchus, III Paul
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