Static information storage and retrieval – Read/write circuit – Multiplexing
Reexamination Certificate
2006-07-04
2006-07-04
Nguyen, VanThu (Department: 2824)
Static information storage and retrieval
Read/write circuit
Multiplexing
C365S198000, C326S030000, C326S082000
Reexamination Certificate
active
07072227
ABSTRACT:
A current mode output driver and output current control method of controlling an output current using a gate voltage are provided. The current mode output driver, which outputs data read from a memory core to a transmission line, includes a gate voltage control circuit, a bias circuit, and a driver circuit. The gate voltage control circuit generates a predetermined gate voltage in response to a current control signal. The bias circuit outputs the gate voltage as a first enable signal in an active mode, and outputs a ground voltage as a second enable signal in a standby mode. The driver circuit drives a predetermined output current in response to the first enable signal, outputs the predetermined output voltage to the transmission line according to the data, and stops its operation in response to the second enable signal. The gate voltage control circuit changes the level of the gate voltage according to a value of the current control signal and output the changed result. Therefore, it is possible to easily increase resolution of an output current and reduce the occupied area of the current mode output driver, thereby facilitating a circuit design.
REFERENCES:
patent: 6366155 (2002-04-01), Moon et al.
patent: 6567317 (2003-05-01), Kwak
patent: 6577554 (2003-06-01), Song et al.
patent: 2000-0055937 (2000-09-01), None
Nguyen Van-Thu
Samsung Electronics Co,. Ltd.
Volentine Francos & Whitt PLLC
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