Abstract: Provided is a display device that has a usage validity period and confirms that the device is within the usage validity period when it is used, and can be improved in usefulness and can be used quickly, as well as a usage management method and program for the display device. The display device includes: a real-time clock; and, a control unit that, upon receiving a video display-ON signal for turning on video display under the condition that the status of the real-time clock is invalid, displays video corresponding to an input video signal.

Abstract: Provided is a display device that has a usage validity period and confirms that the device is within the usage validity period when it is used, and can be improved in usefulness and can be used quickly, as well as a usage management method and program for the display device. The display device includes: a real-time clock; and, a control unit that, upon receiving a video display-ON signal for turning on video display under the condition that the status of the real-time clock is invalid, displays video corresponding to an input video signal.

Abstract: There is provided a method of thermally controlling an electric storage device. The method comprises increasing cooling medium supplied to the electric storage as an electric charge stored in the electric storage device increases. According to the method, by increasing the cooling medium supplied to the electric storage device as an electric charge stored in the electric storage device increases, the electric storage device may be kept at a temperature that increases the efficiency of charging or discharging the electric storage device. It is asserted to be more efficient to lower the temperature of the electric storage device when more electric charge is stored in the electric storage device. Also, an adequate amount of the cooling medium may be supplied to the electric storage. As a result, the overall efficiency of the electric system may be improved.

Abstract: There is provided a method of thermally controlling an electric storage device. The method comprises increasing cooling medium supplied to the electric storage as an electric charge stored in the electric storage device increases. According to the method, by increasing the cooling medium supplied to the electric storage device as an electric charge stored in the electric storage device increases, the electric storage device may be kept at a temperature that increases the efficiency of charging or discharging the electric storage device. It is asserted to be more efficient to lower the temperature of the electric storage device when more electric charge is stored in the electric storage device. Also, an adequate amount of the cooling medium may be supplied to the electric storage. As a result, the overall efficiency of the electric system may be improved.

Abstract: An apparatus and a process for producing a laminate for electronic parts such as ceramic capacitors. After a predetermined pattern for forming an internal conductive layer is formed on a self-supporting green sheet which contains inorganic powder and an organic binder, the self-supporting green sheet is taken up by a columnar roll and laminated. At this point, the position of the same pattern on the green sheet G2 of the next cycle to be laminated adjacently onto the green sheet G1 of the previous cycle as the above pattern with respect to the predetermined pattern on the green sheet G1 taken up by the columnar roll is determined.