Digital Device Being Worked with Exterior Power Supply and Control Method Thereof
First Claim
1. A digital apparatus operating using external power, the digital apparatus comprising:
- a power supply for supplying power;
a one-wire interface for determining if an input signal is a reset signal, a ready signal, a read signal or a write signal, the one-wire interface being connected to the power supply;
an oscillator for providing a clock signal to the one-wire interface;
a controller for performing a reset operation, a ready operation, a read operation or a write operation according to determination results of the one-wire interface;
a Random Access Memory (RAM) and a Read Only Memory (ROM) for storing data;
a timer for providing time information; and
a RNG for encrypting data.
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Accused Products
Abstract
Disclosed are a digital apparatus operating using external power and a method for controlling the digital apparatus. The digital apparatus includes a power supply for supplying power, a one-wire interface for determining if an input signal is a reset signal, a ready signal, a read signal or a write signal, the one-wire interface being connected to the power supply, an oscillator for providing a clock signal to the one-wire interface, a controller for performing a reset operation, a ready operation, a read operation or a write operation according to determination results of the one-wire interface, a RAM and a ROM for storing data, a timer for providing time information, and a RNG for encrypting data.
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Citations
9 Claims
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1. A digital apparatus operating using external power, the digital apparatus comprising:
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a power supply for supplying power; a one-wire interface for determining if an input signal is a reset signal, a ready signal, a read signal or a write signal, the one-wire interface being connected to the power supply; an oscillator for providing a clock signal to the one-wire interface; a controller for performing a reset operation, a ready operation, a read operation or a write operation according to determination results of the one-wire interface; a Random Access Memory (RAM) and a Read Only Memory (ROM) for storing data; a timer for providing time information; and a RNG for encrypting data. - View Dependent Claims (2, 3, 4)
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5. A method for controlling a digital apparatus operating using external power, the method comprising a step of determining if an input signal is a reset packet signal, a ready packet signal, a read packet signal or a write packet signal when an operation starts,
wherein timing of the reset packet signal includes a reset interval in a low state, a hold interval in a high state, and a response interval in a low state, timing of the ready packet signal includes a request interval in a low state, a hold interval in a high state, ready response data, and a data processing interval, timing of the read packet signal includes a request interval in a low state, a hold interval in a high state, a data interval, and a data processing interval, and timing of the write packet signal includes a request interval in a low state, a hold interval in a high state, a data interval, and a data processing interval.
Specification