Patent Application
20130298011
1. Field of the Invention
The present invention relates to a presentation system, a receiver device and methods thereof, particularly to a presentation system, a receiver device and methods thereof, wherein the user can use a browser to view the web pages containing the presentation contents.
2. Description of the Prior Art
The conventional presentation system captures the screen frames of presentation pages, which is to be presented, and transmits the captured screen frames to a display device, such as a projector or a television. Then, the display device presents the presentation pages to the audiences. In a large-scale presentation occasion, the audiences do not necessarily view the presentation contents clearly because of poor image quality of the projector, insufficient resolution of the display device, and/or too long a distance between the audiences and the screen.
Recently, mobile internet devices (MID), such as smart phones and tablet computers, have been popularized very fast. Therefore, it has become a target the manufacturers are eager to achieve that the audiences can use MID or other network devices having a display to view the presentation contents.
The present invention is directed to a presentation system, a receiver device, methods thereof and a computer-readable medium thereof, wherein the sender side transmits the screen frames to the receiver side, and wherein the receiver side stores the screen frames as web pages, and wherein a webpage server is established in the receiver side for the mobile Internet devices or other network devices of the audiences attending the presentation to link, whereby the audiences can view the web pages containing the presentation contents.
In first embodiment, the proposed presentation system includes a sender device and a receiver device. The sender device includes a capture module and a first communication interface. The capture module is configured for capturing screen frames. The first communication interface electrically connects with the capture module and is configured for transmitting the screen frames captured by the capture module. The receiver device includes a second communication interface, a video connection interface, a webpage server, and a network interface. The second communication interface is configured for receiving the screen frames transmitted by the sender device. The video connection interface is configured for electrically connecting with a display device. The received screen frames are output to the display device via the video connection interface and presented on the display device. The webpage server stores the received screen frames as web pages. The network interface electrically connects with the webpage server, so that a browser can link to the webpage server via the network interface for browsing the web pages of the webpage server.
In second embodiment, the proposed receiver device, which cooperates with a sender device to form a presentation system. The sender device captures screen frames and transmits the captured screen frames to the receiver device. The receiver device includes a communication interface, a video connection interface, a webpage server, and a network interface. The communication interface is configured for receiving the screen frames transmitted by the sender device. The video connection interface is configured for electrically connecting with a display device. The received screen frames are output to the display device via the video connection interface and presented on the display device. The webpage server stores the received screen frames as web pages. The network interface electrically connects with the webpage server, so that a browser can link to the webpage server via the network interface for browsing the web pages of the webpage server.
In third embodiment, the proposed presentation method comprises: a sender device capturing screen frames and transmitting the screen frames to a receiver device; the receiver device receiving the screen frames and outputting the screen frames to a display device for displaying the screen frames; establishing a webpage server in the receiver device; the receiver device storing the screen frames as web pages, which are to be browsed by a browser linked to the webpage server.
In fourth embodiment, the proposed method for displaying presentation contents comprises: a receiver device receiving screen frames captured by a sender device and outputting the received screen frames to a display device for presenting the screen frames; establishing a webpage server in the receiver device; the receiver device storing the received screen frames as web pages, which are browsed by a browser linked to the webpage server.
In fifth embodiment, the proposed computer-readable medium, which stores a computer program that is loaded into a receiver device to execute a method for displaying presentation contents, wherein the method for displaying presentation contents comprises: a receiver device receiving screen frames captured by a sender device and outputting the received screen frames to a display device for presenting the screen frames; establishing a webpage server in the receiver device; the receiver device storing the received screen frames as web pages, which are browsed by a browser linked to the webpage server.
The objective, technologies, features and advantages of the present invention will become apparent from the following description in conjunction with the accompanying drawings wherein certain embodiments of the present invention are set forth by way of illustration and example.
The foregoing conceptions and their accompanying advantages of this invention will become more readily appreciated after being better understood by referring to the following detailed description, in conjunction with the accompanying drawings, wherein:
The detailed explanation of the present invention is described as follows. The described preferred embodiments are presented for purposes of illustrations and description, and they are not intended to limit the scope of the present invention.
Refer to
In one embodiment, the sender device 10 further includes an encoding module 13 electrically connecting with the capture module 11 and the first communication interface 12. Owing to limitation in bandwidth, the encoding module 13 encodes the screen frames SF captured by the capture module 11 to reduce the data volume before data transmission.
The receiver device 20 includes a second communication interface 21, a video connection interface 22, a webpage server 23, and a network interface 24. The second communication interface 21 works according to a communication protocol corresponding to the first communication interface 12 to receive the non-encoded or encoded screen frames SF transmitted by the sender device 10. The video connection interface 22 electrically connects with a display device 30. The screen frames received by the second communication interface 21 is outputted through the video connection interface 22 to the display device 30 and presented on the display device 30. It should be noted that the receiver device 20 may be built in the display device 30 or electrically connected with the display device 30 in a detachable way. For example, the video connection interface 22 may be a VGA (Video Graphic Array) port, DVI (Digital Visual Interface), or HDMI (High Definition Multimedia Interface) etc.
The webpage server 23 may store a screen frame as a web page. For example, a screen frame may be stored in a storage element, such as an RAM (Random Access Memory), a flash memory or a hard disc, of the receiver device 20, and a fixed access path is assigned to the screen frame. Thus, the webpage server 23 can retrieve the web page containing the screen frame according to the access path. The network interface 24 electrically connects with the webpage server 23. The audiences attending the presentation may use the browser of a mobile Internet device 40a (such as a smart phone or a tablet computer) or another network device 40b to establish a network link to the webpage server 23 through the network interface 24 so as to browse the web page containing the screen frame of the presentation. In one embodiment, the second communication interface 21 and the network interface 24 can be integrated together. For example, only a single WLAN (wireless Local Area Network) interface based on the IEEE 802.11 wireless communication standard series is sufficient to receive the screen frames SF sent out by the sender device 10 and the browsing request sent out by the mobile Internet device 40a or another network device 40b.
According to the above framework, the host organization of presentation can provide the IP address of the webpage server 23 for the audiences at the entrances, beside the seats or on the presentation image. Then, the audiences can use the mobile Internet device 40a or another network device 40b including monitor to browse the presentation pages being displayed without installing any specified program. Thereby, although the speaker neither sets up a webpage server nor prepares the web pages of the presentation contents, the audiences can still browse the presentation contents synchronously.
In one embodiment, the sender device 10 can be programmed to determine whether the screen frames SF are released to the public or not. For example, if the speaker deems that it is unsuitable to issue the presentation contents to the public because of copyright or other factors, he can control the sender device 10 to generate a corresponding signal to prevent the screen frames from being stored as web pages by the receiver device 20.
In one embodiment, the sender device 10 captures and transmits screen frames SF periodically. For example, the sender device 10 captures and transmits screen frames SF for a period of 1, 3, 5, or 10 seconds or a long interval of time. In one embodiment, the sender device 10 transmits static screen frames SF aperiodically. For example, the sender device 10 captures screen frames SF periodically; if the screen frame does not change for a given period of time, the screen frame is defined as a static screen frame and transmitted to the receiver device 20. In one embodiment, the sender device 10 detects whether the captured screen frame changes; if the captured screen frame is changed (such as by changing the slide), the sender device 10 transmits the changed screen frame to the receiver device 20. In one embodiment, if the screen frame is changed only in some regions, the sender device 10 only transmits the changed regions to the receiver device 20; the receiver device 20 uses the changed regions to refresh the screen frame; then the receiver device 20 transmits the refreshed screen frame to the display device 30 or stores the refreshed screen frame as a web page.
In one embodiment, the webpage server 23 includes an automatic refresh module (not shown in the drawings). The automatic refresh module can automatically refresh the web page browsed by the user in the user side. For example, a refreshing period can be set in the web page. For example, the web page is refreshed per 30 second or per 60 seconds. Thus, the browser in the user side refreshes the web page being browsed by the user per 30 seconds or per 60 seconds. Alternatively, while the web page stored in the webpage server 23 is changed, the webpage server 23 actively refreshes the web page being browsed by the browser linked to the webpage server 23.
Below is described a presentation method according to one embodiment of the present invention. Refer to
Below is described a method for displaying presentation contents, which is applied to a receiver device. Refer to
The present invention also discloses a computer-readable medium. The computer-readable medium stores a computer program, which can be loaded into a receiver device to execute the method for displaying presentation contents shown in
In conclusion, the present invention proposes a presentation system, a receiver device, and methods thereof, wherein the sender side transmits screen frames to the receiver side, and wherein the receiver side stores the screen frames as web pages, and wherein a webpage server is established in the receiver side. The audiences attending the presentation can use the common browsers of mobile Internet devices or other network devices to link with the webpage server of the receiver side and browse the web pages containing the presentation contents without installing extra software. In a video teleconference, the audiences not only can use the video teleconference system to view the countenance and motion of the speaker but also can use the available network devices (such as computers) to link with the webpage server and browse the presentation contents.
While the invention is susceptible to various modifications and alternative forms, a specific example thereof has been shown in the drawings and is herein described in detail. It should be understood, however, that the invention is not to be limited to the particular form disclosed, but to the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 101115965 | May 2012 | TW | national |
