Display replication and control of a portable device via a wireless interface in an automobile

A system for displaying video data in a vehicle. The system intelligently replicates one or more portable device displays on one or more vehicle displays. Each vehicle display may be shared or dedicated to a specific portable device. The image from each portable device is intelligently replicated and provided to the vehicle integrated video system via a wireless communication link for display. The wireless communication link can provide the image to the vehicle integrated video system in real time to support both static images and dynamic images.

BACKGROUND

1. Field of the Invention

The present invention generally relates to a system for displaying video data in a vehicle.

2. Description of Related Art

The consumer electronic market grows and develops new products at a rate much faster than the automotive OEM and suppliers can integrate the functionality to support such products. Accordingly, OEMs are trying to address the gap in technology by providing wired interfaces to some consumer electronic devices such as compressed audio players, or wireless interfaces to communication devices such as cellular phones. These interfaces generally provide connectivity, control, and status information over the communication link. This addresses the basic need for connectivity and control of the portable device. However, an entirely new, and typically custom user interface must be designed to support the portable device. That user interface may or may not be similar to the interface for the portable device. Accordingly, such interfaces require significant development effort and are often only developed for a very limited number of the available consumer electronic devices.

In view of the above, it is apparent that there exists a need for an improved system for displaying video data in a vehicle.

SUMMARY

In satisfying the above need, as well as overcoming the enumerated drawbacks and other limitations of the related art, the present invention provides an improved system for displaying video data in a vehicle. The system intelligently replicates one or more portable device displays on one or more vehicle displays. Each vehicle display may be shared or dedicated to a specific portable device. The image from each portable device is intelligently replicated and provided to the vehicle integrated video system via a wireless communication link for display. The intelligent replication allows the image to be optimized for in-vehicle display. Accordingly, the image may be optimized by resizing of the image, resampling of the image, color shifting of the image, or changing the aspect ratio of the image. The wireless communication link can provide the image to the vehicle integrated video system in real time to support both static images and dynamic images. Accordingly, portable electronic devices such as phones, PDAs, compressed media players including MP3 and MPEG players, as well as portable navigation systems may be supported.

DETAILED DESCRIPTION

Referring now toFIGS. 1 and 2, a system embodying the principles of the present invention is illustrated therein and designated at10. The system10includes a vehicle integrated video system12and a portable electronic device14. The portable electronic device14includes a device display16, a device controller18, and a wireless transmitter20. The controller18provides control over the functionality of the portable electronic device14and is in electronic communication with the device display16to provide video output such as bitmap, mpeg, or rasterized format containing primarily pixel data. The video output may be in the form of a video entertainment signal, such as a live or recorded video image, or for control purposes, such as a graphical menu. The device controller18replicates the video output and provides it to the wireless transmitter20allowing the replicated video data to be provided to the vehicle integrated video system12. Accordingly, the portable electronic device14may take the form of a personal digital assistant (PDA), a phone, a compressed media player, a portable navigation system, or other similar device.

The video data is received by a wireless receiver22in the vehicle integrated video system12. The vehicle integrated video system may be part of a larger vehicle subsystem, for example a vehicle entertainment system or an instrument cluster. As such, the transmitter20and receiver22may be configured to communicate across various wireless protocols. For example, the transmitter20and receiver22may communicate via a radio frequency transmission such as IEEE 802.11 or Bluetooth. In addition, the wireless communication may be an infrared protocol such as IrDA. Although other commonly known communication protocols may be used or specialized interfaces develop. The receiver22provides the video data to the vehicle controller24. The vehicle controller24uses the video data to intelligently replicate the image provided to the device display16. In addition, the vehicle controller24may be configured to continuously scan for portable devices over the wireless communication link. Accordingly, the vehicle controller24initiates communication with the portable device14based on an interrupt request, a polling routine, or similar technique.

The vehicle controller24is configured to optimize the image for rendering on a vehicle display26, for example by resizing the image, resampling the image, color shifting the image, or changing the images aspect ratio. Resizing the image may include making the image larger or smaller by adding content to the outside of the image or deleting content from the image. Resampling the image may include systematically adding or removing content throughout the image. Resampling is typically done proportionally throughout the image, for example, by removing every other column and every other row to reduce the size of the image. Alternatively, a column and a row may be added at regular intervals to add content to the image. However, rows and columns may be doubled, averaged, or interpolated between adjacent rows and columns to add content and artificially increase the resolution of the image.

Color shifting includes changing specific colors in the original image by mapping them to different colors in the output image. This may be done where there is a difference between the number of available colors on the vehicle integrated display (for example 64 k) and the number of available colors on the portable device (for example 16 colors). In addition, this may also be used to tone the color of the video output, such as a control menu, to match the color of proximately located controls and displays, for example if the vehicle display is integrated into the instrument cluster. Accordingly, if all of the text in the original image was blue, blue may be mapped to red in the output image to provide red text for the vehicle display. Further, the image aspect ratio may be changed, for example, by resampling the image non-uniformly by adding or subtracting content in the horizontal direction while leaving the vertical content constant causing an apparent stretching of the image. The wireless interface may also provide status and control information via the communication link to allow functional manipulation of the portable electronic device14by controls25in the vehicle integrated video system12. Further, the video data may be provided in real time to support static displays such as photographs or menus, or dynamic displays such as navigation, video, or real time control.

The vehicle controller24is in electrical communication with a vehicle video display, such as vehicle display26located in the instrument cluster. The vehicle display26may include an LCD display and may be provided alongside other instruments within the instrument cluster for easy visibility by the driver. In addition, a control25may be provided on the steering wheel allowing the driver to manipulate the portable electronic device14via the communication link. The vehicle controller24is in electrical communication with another vehicle display28located on the dashboard27of the vehicle for easy viewing of the front seat passenger. Further, controls25may be provided on the dashboard in front of the passenger seat. Further, a docking cradle29may be provided for the portable electronic device14on the top of the dashboard. In addition, the vehicle controller24may be in electrical communication with a heads-up vehicle display30and including a projector44configured to project an image onto a portion42of the windshield for easy viewing by the driver of the vehicle.

Now also referring toFIG. 3, the vehicle controller24may be in electrical communication to a ceiling mounted vehicle display32, such as an LCD display. The ceiling mounted vehicle display32may be one used for a vehicle entertainment system such as a DVD player or VCR player display. The ceiling mounted vehicle display32may be a flip down display allowing the display to be large enough to be used by either rear seat passenger and easily concealed when flipped up, parallel to the ceiling panel. In addition, the vehicle controller24may be in electrical communication with a vehicle display34mounted to the back of the front vehicle seat. In addition, vehicle controls25may be provided on the back of the front vehicle seat allowing the rear seat passenger to easily view the vehicle display34and manipulate the controls25from their seat in the rear of the vehicle. Yet another vehicle display36is in electrical communication with the vehicle controller24and mounted on a center console between the front vehicle seats. The vehicle display36may be a LCD display mounted statically in the middle console. Alternatively, the vehicle display36may be a flip-up or flip-down display to be easily concealed relative to the middle console. In addition, controls25may be provided on the middle console allowing easy manipulation of the portable electronic device14via the wireless communication link.

Each of the vehicle displays may be equipped with controls25that are configured to select which portable electronic device to receive the video data from to replicate the image on the device display. For example, each vehicle display may include a button, or other control, that may be used to index though each of the between each of the available portable electronic devices wirelessly communicating with the controller. In addition, the controller may be configured to render multiple images on a single display by separating the display into two sections. In one example, portable electronic device46and portable electronic device48are in electrical communication with one or multiple controllers within the vehicle. Portable electronic device46is shown as representatively displaying a circle, while portable electronic device48is shown as displaying a triangle. Accordingly, one vehicle display may replicate the image from portable electronic device46while another vehicle display may replicate the image from portable electronic device48. Further, the vehicle controller24may be configured to replicate the image from one portable electronic device on one portion of the display and replicate the image from another portable electronic device on another portion of the vehicle display. One example is shown on vehicle display32where the image from portable electronic device46is replicated on one half of the vehicle display32and the image from portable electronic device48is replicated on the other half of the vehicle display32. In another example, shown on vehicle display36, one replicated image may be overlayed on top of another replicated image in a picture-in-picture format.

Referring again toFIG. 1and as discussed above, the device controller may be in electrical communication with more than one vehicle controller, and more than one vehicle integrated video system. As such, the portable electronic device may also communicate wirelessly with vehicle integrated video system37. Accordingly, the video data is received by vehicle receiver38and provided to vehicle controller39. Vehicle controller39is in electrical communication with vehicle display40, which may correspond to any of the aforementioned vehicle display types. Using multiple vehicle controllers can reduce the cost and complexity of intra-vehicle controller communication, also allowing wireless communication between the vehicle controllers.