Panasonic Intellectual Property Management Co., Ltd.

Takayuki Hirano

Akinori Ozeki

Osamu Takeyasu

Ryuko Arisawa

Tomoyasu Fujishima

Wataru Miyashita

Shunsuke Ikeda

A signal processing device includes: a processor; and a memory having instructions. When executed by the processor, the instructions cause the signal processing device to perform operations including: converting a first signal that is a time domain signal into a second signal that is a frequency domain signal in response to reception of the first signal, the first signal containing noise superimposed on a broadcast electric signal derived from a broadcast electromagnetic wave, the noise having peaks of amplitude at regular frequency intervals in the frequency domain; calculating a frequency interval between the peaks of the noise in the frequency domain based on a correlation of the second signal; determining a frequency shift amount in the frequency domain based on the frequency interval; and shifting a frequency of the second signal by the frequency shift amount to create a frequency-shifted signal.

Signal processing device and signal processing method

A display device includes a housing with an opening; an electro-optic layer that includes a transmissive-reflective layer and configured to vary reflectivity of incident light; a display provided on the electro-optic layer; a control circuit that controls an operation of the display device; and an actuator that switches the electro-optic layer between first and second postures, wherein the control circuit: controls an operation of the display, generates a trimmed image matching a shape of the opening or a shape of the display, outputs the trimmed image to the display, controls the reflectivity of the electro-optic layer when the electro-optic layer is in the second posture, and does not control the reflectivity of the electro-optic layer when the electro-optic layer is in the first posture, and the display is visible to a driver through the electro-optic layer when the control circuit controls the display to display the trimmed image.

Display system and display device

A display system includes an image capture device, a display device, and at least one of a first illuminance sensor and a second illuminance sensor. The image capture device captures an image rearward of the vehicle. The display device is coupled to the image capture device, and receives at least a portion of the rearward image captured by the image capture device. The first illuminance sensor detects brightness around the vehicle, and the second illuminance sensor detects intensity of light emitted onto a front surface of the display device.

According to one embodiment, a display system includes a display device that displays an image rearward of a vehicle, a first illuminance sensor that detects the brightness around the vehicle, and a second illuminance sensor that detects the intensity of the light emitted onto the front surface of the display device, and the display device includes a housing with an opening on the front side, an electro-optic layer with a transmissive-reflective layer that transmits a portion of incident light and reflects another portion of the incident light, the electro-optic layer being configured to vary the reflectivity of the incident light, a display placed on the rear side of the electro-optic layer and configured to display at least a portion of the rearward image of the vehicle, and a control circuit that controls the brightness of the display based on a value of at least one of first illuminance and second illuminance.

A radio reception device for vehicle() includes a variable phase shifter, an amplitude regulator, and an adder, and has an arrangement in which a signal of an RF, IF, or baseband stage of a radio receiver mixed with a noise is added to a phase-inverted component of the noise to remove only the noise. Therefore, sound distortion due to loss of sound information does not occur so that a quality sound can be provided.

Growing community of inventors

Kanagawa-ken, Japan

Takayuki Hirano