Method and system for remote video display through a wireless projector

• US 20040010805A1
• Filed: 04/14/2003
• Published: 01/15/2004
• Est. Priority Date: 10/17/2000
• Status: Abandoned Application

• Current Assignee: Moonlight Cordless Ltd.
• Original Assignee: Moonlight Cordless Ltd.
• Inventors: Medan, Yoav, Dvir, Ira
• Application Number:
  US10/399,227
• Publication Number:
  US 20040010805A1
• Time in Patent Office: Days
• US Class Current: 725/136
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor

Abstract

A system and method for transmitting presentation data from a controlling computer to a remote projector through a wireless connection, such that the controlling computer is not connected to the remote projector by a wire or cable, or other physical transmission medium. The presentation data may optionally include text, graphic images, video and/or audio data, and is created at the controlling computer. The controlling computer then transmits the presentation data to the remote projector, which displays the presentation data to an audience.

Claims

1. A system for displaying a presentation to an audience, the presentation being composed of data transmitted through a wireless medium, the system comprising:

(a) a controlling computer for creating the presentation data for the presentation, said controlling computer including a wireless transmitter for transmitting said presentation data and said controlling computer being characterized as featuring a CPU (central processing unit), said wireless transmitter forming a portion of the wireless medium; and

(b) a remote projector for receiving the presentation data and for projecting the presentation data for displaying the presentation to the audience, said remote projector including a wireless receiver for receiving the presentation data from said controlling computer and said remote projector being characterized as lacking a CPU, said wireless receiver forming another portion of the wireless medium.

2. The system of claim 1, wherein said controlling computer further comprises:

(i) a video card for formatting visual data for display; and

(ii) a local monitor for displaying said visual data;

and wherein said remote projector further comprises;

(i) a remote projector display for displaying said visual data;

the system further comprising;

(c) a switching box for switching said visual data to said controlling computer to said local monitor and alternately to said remote projector display, said switching box featuring a wireless transceiver for exchanging data with said remote projector.

3. The system of claim 2, wherein said wireless transmitter of said controlling computer forms part of said wireless transceiver of said switching box.

4. The system of claim 2, further comprising:

(d) a command platform for interaction with a user, said command platform comprising;

(i) a wireless transceiver for receiving the presentation data from said controlling computer; and

(ii) a command platform display for displaying said visual data of the presentation data;

said wireless transceiver of said command platform being in communication with said wireless transceiver of said switching box for determining a recipient device for said visual data, such that said visual data is alternately sent to said command platform for display by said command platform display and to said remote projector by display to said remote projector display.

5. The system of claim 4, wherein said command platform further comprises:

(iii) an input device for receiving input from said user, said input being transmitted by said wireless transceiver to said switching box;

wherein said switching box features an input conversion device for converting said input from said command platform to rendered input data;

and wherein said controlling computer further comprises;

(iii) an input device port for receiving said rendered input data, such that said controlling computer performs at least one operation according to said rendered input data.

6. The system of claim 5, wherein said command platform further comprises:

(iv) a packet protocol module for transforming said input data to a packet format;

and wherein said switching box further comprises a packet decoder for decoding said input data from said packet format to said rendered input data.

7. The system of claim 6, wherein said wireless transmitter of said controlling computer is a radiowave transmitter.

8. The system of claim 7, wherein said radiowave transmitter transmits radiowaves in a range of from about 2.4 GHz to about 5.8 GHz.

9. The system of claim 8, wherein said radiowave transmitter is an ISM band transmitter.

10. The system of claim 7, wherein said wireless transceiver of said controlling platform and said switching box are radiowave transceivers.

11. The system of claim 10, wherein said radiowave transceiver operates with radiowaves in a range of from about 2.4 GHz to about 5.8 GHz.

12. The system of claim 11, wherein said radiowave transceiver is an ISM band transceiver.

13. The system of claim 12, wherein said ISM band transceiver of said switching box is a point to multipoint transceiver.

14. The system of claim 5, wherein said command platform display and said local monitor are each separately selected from the group consisting of a plasma screen, a LCD (liquid crystal display) screen, a flat panel display, and a CRT (cathode ray tube) screen.

15. The system of claim 14, wherein the presentation data includes audio data and said remote projector further comprises:

(i) an audio amplifier for amplifying audio signals from said controlling computer; and

(ii) a speaker for audibly displaying said audio signals received from said audio amplifier.

16. The system of claim 5, wherein said input device of said command platform further comprises at least one of a remote keyboard and a remote pointing device.

17. The system of claim 1, wherein said controlling computer compresses the presentation data according to a compression method before transmitting the presentation data to said remote projector, said compression method being selected according to at least one characteristic of the presentation data.

18. A method for displaying a presentation to an audience, the presentation being composed of presentation data transmitted through a wireless medium, the method comprising the steps of:

(a) providing a remote projector for displaying the presentation data to the audience, said remote projector being connected to the wireless medium for receiving the presentation data, said remote projector being characterized by lacking a CPU (central processing unit);

(b) transmitting the presentation data to said remote projector through the wireless medium; and

(c) displaying the presentation data by said remote projector.

19. The method of claim 18, wherein step (b) further comprises the steps of:

(i) providing a controlling computer for preparing the presentation data, said controlling computer featuring a CPU and said controlling computer being connected to the wireless medium;

(ii) preparing the presentation data by said controlling computer; and

(iii) transmitting the presentation data from said controlling computer to said remote projector through the wireless medium.

20. The method of claim 19, wherein step (ii) further comprises the steps of:

(1) providing a plurality of different data compression procedures, each of said compression procedures being associated with a profile of characteristics of the presentation data;

(2) receiving the presentation data to be compressed to form received data;

(3) determining at least one characteristic of said received data;

(4) selecting a profile according to said at least one characteristic; and

(5) compressing said received data according to a compression procedure associated with said profile.