International Business Machines Corporation

Other

Shuichi Shimizu

Norishige Morimoto

Ching-Yung Lin

Masayuki Numao

Masayuki Murata

Seiji Kobayashi

Hideaki Komatsu

Taiga Nakamura

Akio Koide

Mei Kobayashi

Koichi Kamijo

Koichi Kajitani

Hiroshi Masuda

Ryuki Tachibana

Kazuaki Ishizaki

Tatsuya Ishikawa

Toshiyuki Yamane

Kohtaroh Miyamoto

Noboru Baba

Asim Munawar

Takeo Yoshizawa

Tomio Amano

Kumiko Maeda

Katsuyoshi Terakado

Masahiro Souma

Shizuka Yamaguchi

Ken Masumitsu

Yuki Hirayama

Kunihiko Miwa

Arata Kagiyama

Ryo Sugihara

Ikuo Matsumura

Tomoari Yasuda

Seiji Nagata

Akioi Koido

Yoshiaki Ohshima

Seokwon Hur

Dean D Chen

Fimitomo Ohsawa

A method, computer program product, and system for enhancing dynamically enhancing query results. A processor(s) obtains an inquiry from a user and determines response types and condition elements, to use to determine the unique response type of the inquiry. The processor(s) generates, per type, a response form of slot(s) for condition elements. The processor(s) utilizes the response forms to generate a sum of products expression which it transforms into a product of sums expression. The processor(s) utilizes a first sum term to generate a prompt for a further question to the user. The processor(s) obtains data responsive to the question and interprets the data into condition primitive(s). The processor(s) identifies sum terms comprising the interpreted condition primitive(s), based on comparing the interpreted condition primitive(s) to the condition elements of each sum term. If deleting the sum terms renders the expression empty, the processor(s) identifies the unique response type.

Facilitating efficiency in query response

To detect a distant object that may become an obstacle to a traveling destination of a moving vehicle or the like more accurately than the conventional, there is provided a detecting device, a program used in the detecting device, and a detecting method using the detecting device, where the detecting device includes: an acquisition section for acquiring two or more images captured in two or more imaging devices provided at different heights; and a detection section for detecting a rising portion of an identical object toward the imaging devices based on a difference between the lengths of the identical object in the height direction in the two or more images.

Detecting device, detecting method, and program

A simulation apparatus that performs parallel execution of multiple logical processes obtained by modeling a plurality of components included in a system to be simulated. The apparatus includes: (i) a condition generating unit configured to generate, on the basis of communication delays between the multiple logical processes, constraint conditions to be satisfied by initial time shifts given to the multiple logical processes and look-ahead times each to be permitted by a message sent from a logical process serving as a communication source to a logical process serving as a communication destination to permit look-ahead; and (ii) a solver unit configured to solve an optimization problem that satisfies the constraint conditions and minimizes overhead in communication of messages between the multiple logical processes, and obtain the initial time shifts of the multiple logical processes and the look-ahead times between the multiple logical processes.

Simulation apparatus, simulation method, and program

A method and system where a plurality of ECU is rapidly executed while avoiding deadlock by performing conservative event synchronization. The simulation system is provided with 4 layers, namely a processor emulator which is an ECU emulator, a plant simulator, a external peripheral scheduler, and a mutual peripheral scheduler. The external peripheral scheduler performs advanced execution of the plant simulator only during processor emulator reaction delay time (or the time until the next event). The notification to perform advanced execution of the plant simulator is provided until the actual plant simulator stop time. The mutual peripheral scheduler provides notification to the processor emulator to perform advanced execution only during communication delay timing between processor emulators (or the time until the next event). The processor emulator conservatively processes until the earliest time of the notification times. Each peripheral scheduler proceeds with processing until the earliest time of the accepted events.

Multi-ECU simulation by using 2-layer peripherals with look-ahead time

A method, system, and article of manufacture for solving ordinary differential equations described in a graphical model with nodes as blocks and dependencies as links using the processing of a computer with a plurality of processors. The method includes: generating segments of block with or without duplication for each block with an internal state and for each block without any output by traversing the graphical model from each block with an internal state to each block without any output; merging the segment to reduce duplication; compiling and converting each segment from the merged results in an executable code; and individually allocating the executable code for each segment to a plurality of processors for parallel execution.

Parallelization method, system and program

A method, system, and computer readable article of manufacture for simulating a mechanism system controlled by a plurality of electronic control units operating at different clock rates. The simulation system includes a mechanism system simulator; a plurality of electronic control unit emulators for electronically emulating the respective plurality of electronic control units, each thereby receiving an input signal with a time and giving an output signal with a time; and a scheduler for receiving and storing the output signals with the times from the plurality of electronic control unit emulators, and for providing, in response to a change in the output signal coming from the electronic control unit emulator and having a relatively late time, the output signal with a time preceding the relatively late time to the mechanism system simulator.

Control unit simulation method, system, and program

In a normal operation, a physical unit simulator is allowed to speculatively perform high-speed continuous execution. Only when an actual input comes in, a speculative input and the actual input are compared with each other. Thereafter, in response to inconsistency between the inputs, the physical unit simulator is returned to a point closest to the point of the actual input and is allowed to execute a variable step module to reach the point of the actual input. Upon arrival at the point of the actual input, the simulator is shifted back to the high-speed continuous execution from there. Thus, a processing speed of the simulator can be significantly improved.

Simulation method, system and program for simulating physical unit controlled by electronic control unit

A simulation system, method, and article of manufacture. A simulation system has a discrete and a continuous portion. The discrete portion further has a peripheral emulator in communication with the continuous portion of the simulation system. A portion of a peripheral emulator is separated and is caused to operate in a thread of a continuous system. The continuous system and the peripheral are in loose synchronization and therefore sparsely communicate with each other. The configuration significantly reduces the frequency of inter-thread communications between the continuous system and the discrete system that are performed in response to a continuous clock in a simulation system including the continuous system and the discrete system, thereby reducing communication cost. Accordingly, the operation speed of the simulation system can be increased.

Simulation method, system and article of manufacture

A method and system for embedding an electronic watermark directly in an MPEG stream is provided. An intra-macroblock of an I-frame or of a P or B-frame is detected in an MPEG stream, and following the detection of an intra-macroblock of the I-frame or of the P or B-frame, data for one macroblock are extracted from the MPEG stream and buffered. An embedding pattern is embedded in the buffered macroblock without changing the length of VLC, and the resultant macroblock is returned to the MPEG stream. More specifically, a DC factor is extracted from the buffered macroblock, and a pseudorandom number is generated to produce an embedding pattern. Then, whether the bit length of the DC factor will not be changed by embedding the obtained embedded pattern is determined. When the bit length of the DC factor not be changed, the embedding pattern is embedded in the buffered macroblock. When the bit length will be changed, whether &#xbd; of the embedding pattern can be embedded is determined. If possible, &#xbd; of the embedded pattern is embedded in the macroblock.

System and method for embedding additional information in video data

A system, method and computer program product for supporting communication among users. The system includes a storage device for storing, a search unit for searching, and a selection unit for reading and then selecting a communication means to be used in the communication between the first and second users. The method and computer program product for supporting communication among users includes the steps of searching, reading and then selecting a communication means to be used in the communication between the first and second users.

System and method for supporting dynamic selection of communication means among users

An object movement control system, an object movement control method, a server, and a computer program that can update the positional information of an object in a virtual space at high speed by appropriately distributing processing loads. Client control units obtain information about the position of a first object in a virtual space and information about movement of the first object and detect other objects that exist in a virtual region that contains the first object, which has been moved. The distances between objects that exist in a virtual region are calculated, and only when the number of objects the distances to which are shorter than a predetermined threshold exceeds a predetermined number, information about the objects is sent to a server. The server assigns a collision determination client that performs collision determination to each pair of objects selected from the objects.

Object movement control system, object movement control method, server and computer program

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Yokohama, Japan

Shuichi Shimizu