Electrical computers and digital data processing systems: input/ – Intrasystem connection
Reexamination Certificate
2008-01-08
2008-01-08
Peyton, Tammara (Department: 2182)
Electrical computers and digital data processing systems: input/
Intrasystem connection
C710S008000, C710S047000, C710S264000, C711S115000
Reexamination Certificate
active
11361897
ABSTRACT:
This invention is an information processing device such as a computer, as a host device, and a memory card as an external connection device to be connected to the host device. A memory card (1) and a host device (2) are connected with each other in accordance with a six-wire-system half-duplex protocol using four-bit parallel signals, a bus state signal, and a clock signal. When the state of the bus state signal is a state of accepting interruption, the memory card (1) sends an interrupt signal (INT) to four-bit parallel buses. Different elements of interruption are allocated to the respective bits of the four-bit parallel signals. That is, the bit at which the INT signal is sent varies depending on the content of interruption.
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Lerner David Littenberg Krumholz & Mentlik LLP
Peyton Tammara
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