Data request method without using dedicated connections
First Claim
1. A system for gathering data from a commercial airline display unit, the system comprising:
- an electronic unit for requesting and receiving said data, said electronic unit requesting said data by providing a first signal to the commercial airline display unit a predetermined number of times within a predetermined time interval;
said airline display unit receiving said first signal and providing superimposed said data upon a static status signal, said superimposed data being provided to said electronic unit; and
a receiver within the electronic unit receiving and decoding the superimposed data.
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Accused Products
Abstract
In-flight entertainment systems provide entertainment for passengers on commercial airline flights. Presently, usually on longer flights, video entertainment is commonly available on in-flight passenger entertainment systems. In-flight entertainment systems can display video on a variety of display monitors ranging from a conventional CRT display to a more modern Liquid Crystal Display (LCD). Generally most displays are connected to the aircraft electronic system via a ARINC 722 connector. The ARINC 722 connector commonly provides an electrical interface between the aircraft and the video system, whether the video system is a CRT or LCD type monitor. With the increasing use of LCD monitors there is a greater need for the ability of the display monitor to be able to report its status. The need for status reporting is increased because the LCD monitors are often greater in number than the prior art CRT monitors and because malfunctions are less obvious. Several methods for providing status information from video displays have been proposed. Embodiments of the present invention comprise a system in which data can be requested by repeating commands, such as turn on, a number of times within a predetermined time interval. Because embodiments of the invention use an existing command, which can be the repeated without affecting the functioning of legacy systems, the need for modification of the airline and monitor systems is greatly reduced.
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Citations
20 Claims
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1. A system for gathering data from a commercial airline display unit, the system comprising:
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an electronic unit for requesting and receiving said data, said electronic unit requesting said data by providing a first signal to the commercial airline display unit a predetermined number of times within a predetermined time interval;
said airline display unit receiving said first signal and providing superimposed said data upon a static status signal, said superimposed data being provided to said electronic unit; and
a receiver within the electronic unit receiving and decoding the superimposed data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for gathering data from a commercial airline display unit, the system comprising:
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electronic unit means for requesting and receiving said data, said electronic unit requesting said data by providing a first signal to the commercial airline display unit;
said airline display unit receiving said first signal and providing said data as superimposed data in the form of a serial or modulated data stream upon a static status signal, said superimposed data being provided to said electronic unit; and
receiver means within the electric unit for receiving and decoding the superimposeed data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of gathering data from a commercial airline display unit, the method comprising:
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requesting said data with an electronic unit from a commercial airline display unit, said electronic unit requesting said data by providing a first signal to the commercial airline display unit;
providing superimposed data in the form of a serial or modulated data stream upon a static status signal said superimpose data being provided to said electronic unit; and
receiving and decoding the superimposed data. - View Dependent Claims (19, 20)
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Specification