Mitsubishi Electric Corporation

Tsutomu Asahina

Wataru Tsujita

Satoru Inoue

Yoshitsugu Sawa

Shinichi Harase

Satoshi Murata

Jun Ido

Ryotaro Suzuki

Daisuke Shimbo

Takao Fukunaga

Aki Kaizu

Yukihiro Kadota

Ryosuke Umeno

Provided are: an inclination angle calculating unit for calculating, when having determined that a vehicle is stationary by referring to vehicle information indicating a traveling state of the vehicle, an inclination angle of the vehicle during a stationary period using inclination angle information indicating an inclination angle of the vehicle and determining a vehicle inclination angle during the stationary period from the calculated inclination angle of the vehicle; and a correction determination processing unit for determining whether an absolute value of a difference between the determined vehicle inclination angle and a reference angle determined previously by the inclination angle calculating unit is less than a first threshold value (threshold value &#x3b1;) and, if the absolute value of the difference is less than the first threshold value (threshold value &#x3b1;), performing a correction to rewrite the vehicle inclination angle to the reference angle.

Inclination angle detection apparatus and auto levelizer

A parking assistance device includes a pair of left and right sonar devices provided in a vehicle, an obstacle detection controller for determining whether an obstacle present within a determination target distance range on a side of the vehicle is a wall or a curb by comparing a level value of a reflection wave received by one of the sonar devices with each of a first threshold value and a second threshold value that are different from each other, and an automatic parking controller for setting a guiding route for automatic parking depending on a determination result, and the automatic parking controller sets the guiding route requiring a large amount of steering of the vehicle in a case where the determination result indicates a curb, compared with a case where the determination result indicates a wall in the automatic parking in the form of parallel parking.

Parking assistance device

A parking assistance device includes: distance sensors for transmitting detection waves toward a side of a host vehicle while the host vehicle is traveling and receiving reflected waves of the detection waves; a reflection point calculating unit for calculating reflection points indicating positions where the detection waves have been reflected; a grouping unit for grouping the reflection points; a reference distance setting unit for setting a reference distance corresponding to a distance between a host vehicle position indicating the position of the traveling host vehicle and a reflection point group set by grouping; and an object determining unit for setting an object determining threshold value to be compared with the reference distance and determining whether an object corresponding to the reflection point group is a parked vehicle or a parking reference object by comparing the reference distance with the object determining threshold value.

A parking assistance device () is provided with distance sensors (FL,FR,RL,RR) which transmit detection waves laterally with respect to a host vehicle () while the host vehicle () travels and receive reflected waves of the detection waves, a reflection point calculating unit () which calculates a reflection point indicating a position where the detection wave is reflected, a grouping unit () which groups the reflection points, a parking space pitch calculating unit () which calculates a parking space pitch indicating a width of each parking space by using periodicity of a shape of a reflection point group set by grouping, a parking target area setting unit () which sets a parking target area which is a target of perpendicular parking by the host vehicle (), and a parking assistance controlling unit () which guides the host vehicle () to the parking target area on the basis of the parking space pitch.

A reception device () includes: AGC circuits () to generate electric power information individually indicating signal strengths of respective received signals generated from a respective plurality of radio waves received at a plurality of places; stationary-state detection circuits () to calculate individually the amounts of time domain fluctuation in the respective signal strengths indicated by the electric power information generated by the AGC circuits (), and to detect individually, on the basis of the respective calculated amounts of fluctuation, whether the reception device () is stationary or not; and a self-stationary determination circuit () to determine, on the basis of a plurality of detection results from the stationary-state detection circuits (), whether the reception device () is stationary or not.

Reception device and reception method

Provided is a receiving apparatus that includes a receiving unit which receives a trellis-coded modulation signal in which data items modulated by a plurality of trellis-coded modulators have been multiplexed; a data processing unit which arranges the data items multiplexed in the trellis-coded modulation signal received by the receiving unit so that a given number of data items modulated by one of the trellis-coded modulators are arranged consecutively in first order in which the data items modulated by one of the trellis-coded modulators have been modulated as arrangement processing and the arrangement processing is repeated in remaining trellis-coded modulators; a trellis decoding unit which performs trellis decoding of the data items arranged by the data processing unit, thereby producing decoded data items; and a data rearranging unit which rearranges the decoded data items in second order in which the decoded data items have been multiplexed in the trellis-coded modulation signal.

Receiving apparatus and receiving method

A digital broadcast receiver receives a digital broadcast signal through a plurality of antennas, orthogonally demodulates the received signals, performs channel estimation by detecting a delay profile from a known signal included in each of the orthogonally demodulated signals, and uses the channel estimation results to equalize data signals included in the orthogonally demodulated signals. The delay profiles are also used to estimate the signal quality of each of the equalized data signals by determining the power of the signal component and the power of the noise component in each delay profile and calculating a signal to noise ratio. Diversity combining is performed by weighting the equalized data signals on a basis of their estimated signal quality.

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Tokyo, Japan

Tsutomu Asahina