Victor Company of Japan, Limited

Jvc Kenwood Corporation

Murakami Corporation

Other

Atsushi Hayami

Tsuyoshi Oki

Toshio Kuroiwa

Makoto Itonaga

Kazumi Iwata

Takayuki Sugahara

Junichiro Tonami

Kazuo Hikawa

Tsuyoshi Ono

Yasuhiro Yamada

Hiroshi Nakagawa

Yasuo Inoue

Takayoshi Mochizuki

Masaki Mochizuki

Kazuhiko Morisaki

Takeshi Shimizu

Fumiaki Ono

Masao Makita

Hisashi Terada

Warning information that facilitates grasping an obstacle located in rear of a vehicle is provided. A driving assistance system including: a first detection section that detects an obstacle from a plurality of captured images of a rear side of a driver of a vehicle; a second detection section that detects the obstacle by analyzing a reflected wave of a measurement wave transmitted to the rear side; and an information output section that determines a direction in which the obstacle is located with respect to the vehicle on the basis of detection results of the first detection section and the second detection section, and that outputs warning information indicating the direction.

Driving assistance system, driving assistance method, and program

To shorten a time required to predict collision with other vehicles, a collision prediction device includes: a detection unit configured to detect each of a front, a rear, and a side of other vehicles located around a vehicle from a captured image of one frame in which surroundings of the vehicle are imaged; and a determination unit configured to determine a likelihood of collision with the other vehicles based on a detection result of the detection unit. The determination unit determines that the likelihood of collision with the other vehicle of which only the front or only the rear is detected is high in the other vehicles of which one or more of the front, the rear, and the side are detected by the detection unit.

Collision prediction device, collision prediction method, and program

With respect to two images acquired from two video images including a mutually-overlapping area in which the two video images overlap each other, an image transformation matrix for mapping coordinate systems is sequentially generated. Coordinate transformation of at least one image of the images is performed using the generated image transformation matrix. A composite image is created by overlaying two images with the at least one image subjected to the coordinate transformation. The currently used image transformation matrix and the newly generated image transformation matrix are compared with each other. If the two image transformation matrices are similar, the coordinate transformation is performed using the currently used image transformation matrix continuously. If the two image transformation matrices are dissimilar, the coordinate transformation is performed using an image transformation matrix corrected with the newly generated image transformation matrix.

Composite video image creation apparatus, composite video image creation method, and composite video image creation program

An input unit inputs detected information that has been acquired by a sensor. By inserting time information into the detected information that has been input, a multiplexer generates an information sequence in which the detected information and the time information are multiplexed in a time-dividing manner. A transmission unit transmits the information sequence. The time information in the multiplexer is used to synchronize timing between detected information included in an information sequence transmitted from another transmitter and the detected information in the multiplexer.

Information analysis system for transmitting information that requires timing synchronization

A min-sum processing unit executes a min-sum algorithm on input data so as to alternately execute check node processing in which an extrinsic value ratio is updated based on prior value ratios and variable node processing in which a prior value ratio is updated based on the extrinsic value ratios. Here, an initializing unit calculates the total product of the signs of the prior value ratios associated with the row to be processed. A deriving unit derives the sign for an extrinsic value ratio associated with the row to be processed, based on the sign of the prior value ratio that is unused in the updating of the extrinsic value ratio and the total product of the signs thus calculated. An updating unit updates an extrinsic value ratio associated with the row to be processed, using the sign thus derived.

Decoding apparatus and decoding method for decoding LDPC-encoded data

A check node processing unit updates an extrinsic value ratio based on a prior value ratio for each row of a parity check matrix with respect to input data. An identifying unit identifies, based on an element of the parity check matrix that can be identified by a row and column associated with the updated extrinsic value ratio, a next-target element in the same column and in a different row. The identifying unit identifies an element to be updated in the next step by the check node processing unit, from among multiple elements included in the same column. A variable node processing unit updates, based on the extrinsic value ratio, a prior value ratio associated with the identified next-target element after the check node processing unit completes the updating of each row. The check node processing unit and the variable node processing unit alternately and iteratively execute their operations.

A linear equalizer unit sequentially subjects a signal to be processed to linear equalization. A temporary decision unit sequentially subjects a signal subjected to linear equalization by the linear equalizer unit to temporary decision. A nonlinear equalizer unit derives a plurality of coefficients using a signal subjected to temporary decision as a teacher signal and sequentially subject a signal subjected to linear equalization by the linear equalizer unit to nonlinear equalization based on the plurality of coefficients.

Equalizer and equalization method

With two consecutive product-coded ECC blocks, EBand EB, as a set, the rth row of first ECB block EBis followed by the rth row of second ECC block EBin such a way that the first row of first ECC block EBis followed by the first row of second ECB block EB, which is followed by the second row of first ECC block ECB, which is followed by the second row of second ECC block EB, and so on, to interleave data on a row basis. That is, data of two ECC blocks, EBand EB, is allocated alternately on a row basis. This allocation method allows an error to be distributed after reproduction even when a serious burst error extending 18 rows occurs in an ECC block.

Digital signal processing method, data recording and reproducing apparatus, and data recording medium that are resistant to burst errors

A 6-bit output code word is generated in response to every 4-bit input code word by referring to a set of encoding tables. The encoding tables contain output code words assigned to input code words, and contain encoding-table designation information accompanying each output code word. The encoding-table designation information designates an encoding table among the encoding tables which is used next to generate an output code word immediately following the output code word accompanied with the encoding-table designation information. The generated output code words are sequentially connected into a sequence of the generated output code words which follows predetermined run length limiting rules (1, k)RLL, where 'k' denotes a predetermined natural number between 7 and 12.

Modulation system

An optical information recording medium () is composed of a pit recording area (), wherein various control information is recorded by a prepit, and a user recording area () having a guide groove formed in a groove format, and a phase depth for the prepit and the groove are approximately the same wherein the phase depth is less than or equal to &#x3bb;/10, wherein &#x3bb; is a wavelength for reproducing light source. A recording/reproducing apparatus () for the optical information recording medium () includes decoding means () for decoding information by detecting a tangential push-pull reproduced signal from the prepit recording area () and detecting an aggregated signal from the user recording area ().

Optical information recording medium and recording/reproducing apparatus for such medium

First and second synchronous words having respective numbers of times of inversion different from each other in NRZI conversion are generated in a synchronous word generation portion, and first and second code word series data are generated by arranging code word data generated making reference to a run-length coding table after these two synchronous words. With respect to the first and second code word series data, DSV calculation results stored in two DSV calculation peak value memories corresponding to these data are compared with each other by a peak value comparison portion. Based on a comparison result, the code word series data having a smaller direct-current component generated in NRZI conversion is selected.

Digital signal modulation method, digital signal modulation apparatus, encoding method, encoding apparatus, storage medium, transmission apparatus and program

A final 15-bit output code word is generated in response to every 8-bit input code word by referring to a set of encoding tables. The encoding tables contain output code words assigned to input code words, and contain state information accompanying each output code word. The state information designates an encoding table among the encoding tables which is used next to generate an output code word immediately following the output code word accompanied with the state information. When given conditions are satisfied, first and second candidate current output code words generated in response to a current input code word by referring to first and second specified ones of the encoding tables. One is selected from the first and second candidate current output code words as a final current output code word in response to DSV calculation results. Auxiliary information is superimposed on a sequence of final output code words.

There is disclosed a recording method for performing a DSV control while recording a recording signal generated by inserting a synchronous signal for decoding reproduction data into every predetermined number of code words in a code word string satisfying a predetermined run length restriction rule and to be outputted into a recording medium, when a plurality of coding tables are used to convert an input data word of p-bits to a code word of q-bits (q&#x3e;p), and the code word string obtained by directly coupling the code words is recorded and reproduced in a recording medium such as an optical disk and magnetic disk, or transmitted via a transmitting portion, wherein the p-bits are 8 bits, the q-bits are 15 bits, and the predetermined run length restriction rule stipulates that a minimum run length of the signal obtained by NRZI-converting the code word excluding the synchronous signal is 3T, and a maximum run length is any one of 11T, 12T, 13T, and 14T.

Recording method, recording apparatus, transmitting apparatus, reproducing method, reproducing apparatus, receiving apparatus, recording medium, and transmission medium

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Yokohama, Japan

Atsushi Hayami