Boots – shoes – and leggings
Patent
1989-03-01
1991-07-09
Evans, Arthur G.
Boots, shoes, and leggings
340732, G09G 100
Patent
active
050311182
DESCRIPTION:
BRIEF SUMMARY
The variety of different personal computers and monitors has resulted in the creation of many different operating modes for the input signals required by the monitors. Until now, it has been impossible to operate any given monitor with another personal computer without special adaptation. Rather, a specific adapter board had to be used for each operating mode. The operating modes can be distinguished mainly on the basis of their line frequency, picture frequency, the number of scan lines and the horizontal and vertical amplitude, as well as their formats usable within the screen format.
It is an aspect of the invention to provide a method by means of which the signal of the personal computer designated for the monitor may be evaluated for characteristics specific for the computer's operating mode, to initiate an automatic adaptation of the monitor to the identified operating mode.
This aspect of the invention may be achieved by a method for adapting a multiple mode monitor to a plurality of video sources having different operating parameters. A first step may be storing sets of monitor operating parameters for each of a plurality of operating modes at selectively addressable locations. A second step may be evaluating horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of a plurality of predetermined operating modes corresponding to the synchronizing signals. A third step may be selectively addressing the set of operating parameters corresponding to the identified operating mode. A final step may be adjusting operation of the monitor, for example, the horizontal and vertical deflection circuits, to correspond to the selected set of operating parameters. The synchronizing signals may be evaluated by measuring the respected periods of the synchronizing signals. A time base may be derived from the vertical synchronizing signals for measuring the period of the horizontal synchronizing signals. The operating parameters may be stored as digital data and converted to analog control signals by dynamic digital-to-analog conversion. The dynamic digital-to-analog conversion may be synchronized with the vertical frequency. The number of steps in the digital-to-analog conversion for each period of the vertical synchronizing signal may be held to a constant number of steps.
In accordance with an inventive aspect of the invention, the ratings or operating parameters of frequently occurring operating modes are stored in a memory. This may be done, for example, by prior adjustment with test signals. After the termination of testing, the parameters so obtained may be written into the memory designated for this purpose, for example, a read only memory. The ratings are stored under addresses specific for the operating modes. After selection of one of the addresses, all required ratings will be present at the output of the memory. If it is possible to definitely deduce the operating mode by evaluation of the horizontal and vertical synchronizing signals of the personal computer, the address allocated to this operating mode can be called, and the operating mode can be set. The operating mode is set by feeding signals from the memory output to the horizontal and vertical scanning stage of the monitor. This stage includes the horizontal and vertical deflection circuits. As the setting occurs immediately after the reception of horizontal and vertical synchronizing signals, the time required for setting can barely be noticed by the user. It is even possible to switch a monitor in operating to another personal computer, without the need to consider whether the other personal computer uses the same or another operating mode. The number of possible operating modes which can be set automatically under the invention is unlimited in principle. In practice, however, it is dependent on the size of the memory which is used for storing the parameters or ratings.
In accordance with another aspect of the invention, it is also possible to distinguish those operating modes that coinc
REFERENCES:
patent: 4800429 (1989-06-01), Perkins
patent: 4847539 (1989-07-01), Kim
IBM Technical Disclosure Bulletin, vol. 24, No. 9, Feb. 1982, pp. 4680-4687 by Dunik, Title "Raster Scan Display Sync Gen.".
IBM Technical Disc. Bul., vol. 28, No. 6, Nov. 1985, pp. 2615-2620, Title "Video Compatibility Feature".
Deutsche Thomson-Brandt GmbH
Evans Arthur G.
Fried Harvey D.
Laks Joseph J.
Tripli Joseph S.
LandOfFree
Apparatus and method for adapting multiple operating mode monito does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for adapting multiple operating mode monito, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for adapting multiple operating mode monito will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-623172