Recording device and recording and reproducing device
5 Assignments
0 Petitions
Accused Products
Abstract
To make content irreproducible in a recording device after a set expiration time, the recording device has a read/write unit for reading and writing data on a recording unit, the read/write unit having electric power supplied from an external power source, a clock containing a built-in battery, an input/output interface for inputting data from outside and outputting data to outside, and a controller for controlling the read/write unit and the input/output interface. The recording medium includes an ordinary data area for writing ordinary data and an expiration time data area for writing an expiration time of ordinary data. The controller prevents ordinary data written in the ordinary data area from being output to outside when the expiration time written in the expiration time area has passed a time limit calculated by the clock.
14 Citations
26 Claims
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1-22. -22. (canceled)
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23. A recording device for recording data on a recording medium, comprising:
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a read/write module which reads and writes data on a recording medium, said read/write module having electric power being supplied by an external power source;
a battery-built-in clock which as a built-in battery and a clock function;
an input/output interface for inputting data from outside and outputting data to outside; and
a controller for controlling said read/write module and said input/output interface, wherein said recording medium includes an ordinary data area for writing ordinary data and an expiration time data area for writing an expiration time of said ordinary data, and wherein said controller performs control to alter ordinary data and output altered ordinary data written in said ordinary data area when said expiration time written in said expiration time data area has passed a time limit calculated by the clock function of said battery-built-in clock. - View Dependent Claims (24, 25, 26)
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Specification