Science Park Corporation

Ibiden Company Limited

Koichiro Shoji

Takashi Nozaki

Hitoshi Shimura

Jianping Wei

Tomoyuki Kawade

Hideaki Miura

Hisashi Takahashi

Hirokazu Yashiro

Yoshiyasu Takafuji

Takashi Kenjo

The present disclosure prevents the leakage of user data by preserving user data working not in an electronic computing machine. A part of a storage area of a main memory of a user terminal is used as a RAM disk. User data working is encrypted and stored in the RAM disk. The user data stored in the RAM disk is sent to a network storage, the RAM disk and the network storage are synchronized. Since the user data is controlled by using a driverware technology inside the electronic computing machine, and sent to the network, therefore the security is ensured.

Electronic data management device, electronic data management system, and non-transitory computer-readable recording medium

The present invention provides a data management program for performing monitoring so that user data provided to the client cannot be copied and utilized for a purpose other than the intended purpose. When a storage device () storing user data () is connected to a client computer (), a management program () prohibits writing to all of the external storage devices. The management program () makes settings prohibiting usage of a network (). The management program () performs control by acquiring the file name, folder name, and attribute data of the execution file as well as the process name and process ID of the process being executed. The management program () has built-in driverware () which runs in the kernel mode () of an operating system () and serves to provide a common interface for the communication of device drivers (to) and an application program ().

Electronic computer data management method, program, and recording medium

[Task] When data is printed to a printing device from a computer, the printing is approved or not approved according to the data contents. [Solution] A first control filter, which detects printing data output from a spooler, halts the printing task temporarily, and replicates the printing data, and a viewable image driverwhich uses replicated printing data to create an image file, are provided. The image file is transmitted over a networkto a manager, and the manager views the image file and decides whether to perform printing on the printing device, and transmits a notification signal to this effect to the first control filter. The first control filterperforms printing control according to the notification signal from the manager.

Printing control program and program recording media

In the method of controlling a file system driver of an electronic computer and the program for the method and further the storage medium containing the program according to the present invention, access to a file stored in a storage device of the electronic computer is controlled in a kernel mode. When a specific file in a file system of an electronic computer () is accessed from an application program (), the access is received in a kernel mode () of an OS (). Then, an access control database () comprising filenames in the file system and access methods is referenced to judge whether or not the access to the specific file conforms to conditions prescribed in the access control database (). If the access to the specific file does not conform to the conditions, the access is canceled.

Computer file system driver control method, program thereof, and program recording medium

A method for preventing a return address from being falsified due to a buffer overflow during the program execution, and for detecting the buffer-overflow beforehand. When the return address is re-written during program execution, the debug function of the central processing unit is used to output an error. The falsification of the return address is detected through the error output. Then the falsified return address is re-written to a value stored in advance to enable the program to return to normal operation. When the falsification of the return address is detected, the executing program is terminated.

False code execution prevention method, program for the method, and recording medium for recording the program

A computer storing a print control program, the program, and a recording medium containing the program according to the present invention control access from the computer to a printer in the kernel mode. When access is made from an application program () to a printer (), a spooler () operates. An access request is detected in response to an event occurring when the spooler () operates. A common interface driver () controls data output to the printer () at a filter () or the spooler () according to a control condition previously registered in a control condition database ().

Computer containing a print control program, the program, and program recording medium

A screen image for monitoring the usage state of a client computer is acquired, the acquired screen image is efficiently stored, and the stored screen image can be easily searched. A draw command is acquired by a driverware () when a screen image is generated in a client computer (), and text data is extracted from the draw command. The extracted text data are associated with the draw command and stored in a database () of the server (). The database () is searched using a keyword, and the screen image is reproduced from an associated draw command.

Monitoring method, monitoring system, system program and recording medium having program recorded thereon

The present invention provides a common interface among device driversoperating in the kernel, for increasing data transfer speeds and improving data integrity. A common interface driveris provided among device drivers, which control devicesconnected to a computer. The common interface driveroperates in the kernel modeand provides an interface with the application program. The common device driverreceives and analyzes commands from the application programand outputs instructions to each of the device drivers

Interface driver program for computer and recording medium therefor

Computer interface driver program

The present invention provides a personal authentication method using each individual's characteristics exhibited when entering data from an input device of an electronic computer in a network system, and a program for the personal authentication method, and further a recording medium for the program. To perform personal authentication of a user using an electronic computer by using device actuation characteristics of the user when the user actuates the keyboard, is obtained in a kernel mode that is an operating mode in which all instructions of an operating system are executable, and the actuation time is transmitted to a personal authorizing server by a network system, in the personal authorizing server analyzed to grasp the device actuation characteristics of the user exhibited when actuating the keyboard, and compared the device actuation characteristics with a personal information stored in a database of the personal authorizing server.

Individual authentication method using input characteristic of input apparatus by network, program thereof, and recording medium containing the program

When a brushless motor is rotated at low speeds (the answer of a step S12 is YES), the brushless motor is driven by exciting a first phase coil, a second phase coil and a third phase coil by a sine wave PWM system having a phase difference of 120.degree. from each other to perform a torque control. Since the crest value of the sine wave is controlled in response to torque greatly fluctuated by a load, an out-of-phase phenomenon which is apt to occur at low rotational speeds can be previously prevented. When the brushless motor is rotated at high speeds (the answer of the step S12 is NO), the brushless motor is driven by a square wave PWM system based on a three-phase 120.degree. conduction type. Since the out-of-phase phenomenon is apt to occur as a frequency is increased when the brushless motor is driven by the sine wave PWM system, the control system is switched to a square wave PWM system to prevent the out-of-phase phenomenon. Therefore, the brushless motor can be driven smoothly without much pulsating torque over the full range of revolutions from a low speed (zero revolution) to high speeds (several tens of thousands of revolutions/min).

Growing community of inventors

Zama, Japan

Koichiro Shoji