External storage device and method of accessing same
OwnerTadahiko Hisanoinventor
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OwnerTadahiko Hisanoinventor
Estimating the term…
An I/O expansion device for additional inputs and outputs, and an apparatus and a method for applying this device. The device includes a connector (CN1) for the connection with a parallel port, a plurality of 4-bit input/output ports, and an I/O expansion circuit (100) having a 4-bit data bus for data transfer between a plurality of 4-bit input/output ports and the connector. The I/O expansion circuit (100) includes a control input CTRL including a strobe PROG for controlling fetch of the command for selecting the input/output ports and an operation mode, a data input DIN that recieves a command in accordance with the state transition of the strobe PROG and data to be transferred to the input/output port selected by the command and a data output DOUT for giving the state of the selected port through the connector.
A method for access to an external storage device through an interface, wherein the external storage device has a data input, a control input, and a memory to which data and an address are provided from the data input in accordance with a control signal from the control input to store the data at the provided address in the memory, comprising:
An apparatus having (1) an interface for data exchange from and to an external storage device having a data input, a control input, and a memory to which data and an address are provided from the data input in accordance with a control signal from the control input to store the data at the provided address in the memory, and (2) a connector for connecting the data input and the control input to the interface and supplying power to the external storage device, wherein the apparatus sets the data, the address and a value for control into the interface to provide the control signal to the control input from the interface, and to provide the address and the data to the data input from the interface so that the data is stored at the address in the memory in accordance with the control signal.
An apparatus having (1) an interface for data exchange from and to an external storage device having a data input, a control input, and a memory to which data and an address are provided from the data input in accordance with a control signal from the control input to store the data at the provided address in the memory, and (2) a connector for connecting the data input and the control input to the interface and for supplying power to the external storage device, wherein the apparatus provides the control signal to the control input, and provides the data and part of the address to the data input from the interface to set the part to bits of an address held in the external storage device for modifying the address so that the data is stored at the modified address in the memory.
An apparatus having (1) an interface for data exchange from and to an external storage device having a data input, a control input, and a memory to which data and an address are provided from the data input in accordance with a control signal from the control input to store the data at the provided address in the memory, wherein the memory has a mode in which the data are successively output from the memory, and (2) a connector for connecting the data input and the control input to the interface and supplying power to the external storage device, wherein the apparatus provides the control signal to the control input, and provides the address and the data to the data input from the interface to store the data at the address in the memory, and sets a value into the interface to turn a control status of the memory such that the memory operates in the mode.
An apparatus having (1) an interface for data exchange from and to an external storage device having a data input, a control input, a memory to which data and an address are provided from the data input in accordance with a control signal from the control input to store the data at the provided address in the memory, and a readable port set to a status for identification and control of access to the memory, and (2) a connector for connecting the data input and the control input to the interface and for supplying power to the external storage device, wherein the apparatus reads the status from the interface to identify access of the memory, and provides the control signal to the control input, and provides the address and the data to the data input from the interface to store the data at the address in the memory.
Dependencies are inferred from the claim text.