133results about How to "Easy to destroy" patented technology

A system, method, and computer-readable storage medium for protecting a set of storage devices using a secret sharing scheme in combination with an external secret. An initial master secret is generated and then transformed into a final master secret using an external secret. A plurality of shares are generated from the initial master secret and distributed to the storage devices. The data of each storage device is encrypted with a device-specific key, and this key is encrypted using the final master secret. In order to read the data on a given storage device, the initial master secret reconstructed from a threshold number of shares and the external secret is retrieved. Next, the initial master secret is transformed into the final master secret using the external secret, and then the final master secret is used to decrypt the encrypted key of a given storage device.

This invention relates generally to document protection methods and product. More specifically, the present invention relates to a method for hiding information in a document by means of a latent image or message, which is practically invisible to the naked eye and may only be revealed through use of a matching viewing device. The present invention further relates to a method for creating original documents containing latent messages, which are revealed when the document is read by a viewing device. In one embodiment, print elements such as lines, dots, spots, swirls, or images are used to form covert information. The covert information print elements are disposed at an angle to print elements of a background, thus creating a covert document. In another embodiment, print elements of the covert information are used with a solid background.

In a mask device with blower, a sensor for warning is disposed, which detects a movement position of an exhaust valve corresponding to the case where an internal pressure of a face body is lower than an outer atmospheric pressure at the time of inhaling air in a non-contact state and outputs a signal. A warning device operates in accordance with a signal that is output from the sensor for warning.

A destructible privacy label includes a sheet-like member having an upper surface and an adhesive lower surface. The upper surface is capable of displaying information-conveying indicia thereon. The sheet-like member includes two conjoined segments formed by a separation line that traverses the sheet-like member. Each sheet-like member segment is separable from the other along the sheet-like member separation line. A release liner having a tackless upper surface releasably contacts the sheet-like member lower surface. The release liner includes two conjoined segments formed by a separation line. Each release liner segment is separable from the other along the release liner separation line. The separation line of the sheet-like member generally does not overlie the separation line of the release liner.

The invention discloses key management method and system, belonging to the field of information safety. The method comprises the following steps of: generating a random number as a management key when an intelligent key device is electrified for the first time, wherein the management key can not be read out, and the intelligent key device is provided with a transmission key in advance; when receiving an APDU (Application Protocol Data Unit) for writing a master control key, deciphering by using the transmission key; encrypting the master control key by using the management key and then storing the encrypted master control key in the intelligent key device; deciphering the APDU by using the management key in the process of creating a file system; setting the intelligent key device into an application state after the process of creating the file system is ended; and erasing the management key when the intelligent key is ended.

It is an object of the present invention to provide a trochoid type oil pump in which erosion of the rotor surfaces caused by cavitation is minimized, vibration and noise are reduced, and the structure is greatly simplified. The trochoid type oil pump of the present invention comprises a rotor chamber which has an intake port and a discharge port, an outer rotor, an inner rotor, and shallow grooves which are formed on the side of the initial end portion of the discharge port on the circular circumference of the track of the positions of the bottom portions of the teeth created by the rotation of the outer rotor. In a state in which the sealed spaces formed by the outer rotor, the inner rotor and a partition part between the final end portion of the intake port and the initial end portion of the discharge port are reduced in volume from the maximum volume, the sealed spaces Sa are caused to communicate with the shallow grooves.

Techniques related to updating software (e.g., firmware, code or applications) in an electronic device or system are disclosed. According to one aspect of the present invention, an updating communication program is retained a micro control unit (MCU). When needed, the updating communication program is executed by the MCU to download an updating executable program from an external device (e.g., a computer device or portable device). The updating executable program is configured to download a program for updating and write the program into a storage module as a new version to replace an old version of the program.

The invention discloses a wood conditioning method. The method comprises following steps of immersion treatment, primary heating and humidifying treatment, primary drying, primary cooling, secondary heating and humidifying treatment, secondary drying, secondary cooling and ventilation drying. According to the wood conditioning method, the high-temperature and low-temperature alternative drying manner is adopted to reduce the wood water containing rate, through immersion treatment, ammonium bicarbonate is guided into the wood, due to alkalescence of an ammonium bicarbonate solution, cellulose on the wood cell wall can be swelled up, introduction of subsequent heat and water flowing can be facilitated, according to high-temperature and high-humidity treatment, overheat water steam is used for forming partial pressure so as to move water out of the wood, through cooling, temperature gradient is used for diffusing water to the outer portion, the high temperature drying and the low temperature drying are alternatively carried out, the water containing rate of the wood is reduced to the proper range, the anti-mildew anti-corrosion property of the wood can be increased, consumed time is short, and energy consumption is small.