Patent Application
20070070308
1. Field of Invention
The present invention relates in general to a projector having a built-in portable universal serial bus on the go (USB OTG), and more particular, to a convenient and low-cost projector equipped with a built-in display unit, a USB OTG connection port, and a memory medium operative to serve as a main controller for direct and real-time access of digital and backup data, and transmission and sharing of MP3 without connecting a main control computer system, so as to perform projection of briefing directly or play MP3 or audio/video programs
2. Related Art
The conventional projector is mainly a terminal device for displaying images by projection without any self-control operation. In other words, the operation and the image file to be projected, data to be accessed and the control of projection of the conventional projector are controlled by a main control system connected thereto. That is, the projector has to connect a computer or portable computer serving as a main controller via connection interface such as USB interface or RS232 interface, so as to access and display projection files and briefing files. Without the connection to the main controller, the image file or data signal cannot be acquired to perform projection. This ultimately limits the applicability of the projector. That is, the projector cannot be used without a personal computer, and consequently, adversely affects the portability and cost for using the projector.
A projector which incorporates a built-in display unit and a connection port having USB OTG functions is provided. By connecting a memory medium, the projector is operative to provide data access, such that real-time digital data access, backup, MP3 transmission and sharing can be performed without the requirement of connecting to a main control computer system. Consequently, the projector is operative to perform operation of briefing projection or audio/video play for MP3 more conveniently and less costly. Accordingly, a projector having a built-in portable universal serial bus on the go (USB OTG) of the present invention, includes at least one built-in USB OTG chip and one USB OTG connection port, a display unit mounted to the projection device, and a portable memory medium having one end installed with a USB connection interface corresponding to the USB OTG connection port.
The present invention will become more fully understood from the detailed description given hereinbelow illustration only, and thus are not limitative of the present invention, and wherein:
As shown in
The projection device 1 includes a device body 11 in which a position is predetermined for installing a USB OTG chip (not shown). A USB OTG connection port 12 is also installed in the device body 11. In the embodiment as shown in
In one embodiment, the control keys may be directly formed on the projection device 1 or as a remote control for controlling operation of the projection device 1. By connecting the portable memory medium, the projection device 1 is operative to serve as a main controller to perform transmission of image file, briefing data, transmission of MP3, control of access and storage at any time and any place, and to serve as a player of MP3 and digital audio/video programs.
The display 2 is directly mounted on a predetermined position of the projection device 1 to display the video signal or images of the MP3 when the projection device 1 is connected to the portable memory medium.
The portable memory medium 3 includes a USB connection interface 31 corresponding to the USB OTG connection port 12 of the projection device 1.
The portable memory medium 3 includes various types of memories available on the market such as the walkman, MP3 or walkman having MP3 functions. The portable memory medium 3 can be directly connected to the USB connection interface 31 to the USB OTG connection port 12. Alternatively, the portable memory medium 3 may include a USB memory medium having wireless transmission function or a normal USB memory.
Referring to
The projection device also includes a device body 11. However, different from the above embodiment, the device body includes a recessed slot 15 in which a USB OTG chip (not shown) and a USB OTG connection port 12 can be installed. The slot 15 is covered by a lid 16 after the USB OTG chip is installed.
Similarly, the portable memory medium 3 also includes a USB connection interface 31 that can be accommodated within the slot 15 and connected to the USB OTG connection port 12 within the slot 15 via a USB connection interface 31 thereof as shown in
The operation process of the embodiment as shown in
The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims.
