CAMERA IMAGE DISPLAY SYSTEM

• US 20160044558A1
• Filed: 02/17/2014
• Published: 02/11/2016
• Est. Priority Date: 03/19/2013
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA)
• Inventors: Fukada, Akihiro, Uehara, Nagatoshi, Kawaguchi, Shingo
• Granted Patent: US 9,467,913 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2360/122 Tiling
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 2380/10 Automotive applications
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point

Abstract

A camera image display system that can transmit and receive images captured by a camera while emphasizing real-time performance. The camera image display system includes an image dividing unit that divides an entire image captured by a camera into divided images, an encoder that converts the divided images into JPEG divided images respectively, and a wireless transmitter that transmits the JPEG divided images. By converting and transmitting the images by each divided image, the camera image display system can display the divided images, which are only parts of the entire image, on the screen when the divided images are transmitted and received satisfactorily. With this, it can improve the real-time performance to display the images on the display unit.

Claims

1. A camera image display system, comprising:

a camera unit that includes a camera, an image dividing unit generating divided images by dividing an entire image captured by the camera, an encoder respectively converting the divided images into JPEG divided images, and a wireless transmitter transmitting the JPEG divided images wirelessly;

a wireless receiver that receives the JPEG divided images transmitted by the wireless transmitter;

a display unit that displays images;

a decoder that decodes the JPEG divided images received by the wireless receiver;

an image display controller that controls the display unit to respectively display the decoded divided images at positions on the display unit corresponding to positions of the divided images in the entire image;

a transmission-and-reception status detector that detects a transmission-and-reception status of the JPEG divided images between the wireless transmitter and the wireless receiver; and

a channel-switching controller that has at least three channels in the wireless frequency band, controls the wireless transmitter and the wireless receiver to sequentially switch the at least three channels based on the detected transmission-and-reception status, and changes a switching order of the at least three channels in accordance with a MAC address of the wireless transmitter.

2. The camera image display system as claimed in claim 1, further including:

an image quality adjuster that adjusts at least one of an image size of the JPEG divided images, a compression rate for encoding the divided images into JPEG format, and a frame rate based on the detected transmission-and-reception status.

3. The camera image display system as claimed in claim 1, further including:

a transmission buffer that has a storage area capable of storing the JPEG divided images of at least two entire images transmitted by the wireless transmitter in chronological order; and

a transmission-buffer management unit that manages the transmission buffer to discard the divided images stored in the storage area of the transmission buffer except for the divided images corresponding to the latest entire image when the storage area of the transmission buffer becomes full.

4. The camera image display system as claimed in claim 1, further including:

a reception buffer that has a storage area capable of storing the JPEG divided images of at least two entire images to be decoded by the decoder in chronological order; and

a reception-buffer management unit that manages the reception buffer to discard the divided images stored in the storage area of the reception buffer except for the divided images corresponding to the latest entire image when the storage area of the reception buffer becomes full.

7. The camera image display system as claimed in claim 1, further including:

a current position detector that detects a current position of the vehicle having the wireless receiver; and

a channel-switching controller that respectively controls the wireless transmitter and the wireless receiver to switch channels in a wireless frequency band used by the wireless transmitter and the wireless receiver in accordance with the detected current vehicle position.

5-6. -6. (canceled)