Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
254 words
1 . A method for automatically changing the display in overlapping rectangular viewport areas of a display screen of a digital display apparatus without direct operator control and in which each viewport area is assigned a different priority level, comprising the steps of: a) storing in a random access store indications of the position and size of each viewport area, together with an indication of the priority level of the viewport area, b) constructing a master matrix of (2n+1) 2 elements, where n is equal to the number of viewport areas, by assigning a vertical component to each vertical coordinate of each viewport area and a horizontal component to each horizontal coordinate of each viewport area, and for each element so formed storing an indication of the highest priority level of the viewports covered by the element, c) receiving an indication that the display of a particular viewport is to be changed, d) constructing a condensed matrix for the viewport area, the display of which is to be changed, by storing, for each element, an indication whether or not it covers the particular viewport that is to be changed, and associating the corresponding elements of identical rows and columns together, e) receiving indications of the coordinate values of the display to be displayed in the viewport area, f) using the second matrix to determine the coordinates of the received display information that can be displayed in the viewport area, and - g) storing the indications of the coordinate values in the random access store.
Claim 2
Dependent Claim
254 words
1 . A method for automatically changing the display in overlapping rectangular viewport areas of a display screen of a digital display apparatus without direct operator control and in which each viewport area is assigned a different priority level, comprising the steps of: a) storing in a random access store indications of the position and size of each viewport area, together with an indication of the priority level of the viewport area, b) constructing a master matrix of (2n+1) 2 elements, where n is equal to the number of viewport areas, by assigning a vertical component to each vertical coordinate of each viewport area and a horizontal component to each horizontal coordinate of each viewport area, and for each element so formed storing an indication of the highest priority level of the viewports covered by the element, c) receiving an indication that the display of a particular viewport is to be changed, d) constructing a condensed matrix for the viewport area, the display of which is to be changed, by storing, for each element, an indication whether or not it covers the particular viewport that is to be changed, and associating the corresponding elements of identical rows and columns together, e) receiving indications of the coordinate values of the display to be displayed in the viewport area, f) using the second matrix to determine the coordinates of the received display information that can be displayed in the viewport area, and - g) storing the indications of the coordinate values in the random access store.
Claim 3
Dependent Claim
254 words
fata display apparatus comprising a procedure processor, a storage unit and a display buffer operating under the control of a control syste ' n to display on a display screen multiple overlaid viewports, each assigned to a different application task, characterised in that the operating system includes: communication means, adapted to control the apparatus to receive data display information signals from an application processor, and processor means, adapted to control the procedure processor to store in a random access store indications of the position and size of each viewport area, together with an indication of the priority level of the viewport area, and to generate signals indicating the result of constructing a first matrix of (2n+1) 2 elements, where n is equal to the number of viewport areas, by assigning a vertical component to each vertical coordinate of each viewport area and a horizontal component to each horizontal coordinate of each viewport area, and for each element so formed storing an indication of the highest priority level of the viewports covered by the element; to construct a second matrix for the viewport area, the display of which is to be changed, by storing, for each element, an indication whether or not it covers the particular viewport that is to be changed, and associating the corresponding elements of identical rows and columns together, and using the second matrix to determine the coordinates of the received display information that can be displayed in the viewport area and to generate and store signals indicative of the determination.
Claim 4
Dependent Claim
254 words
fata display apparatus comprising a procedure processor, a storage unit and a display buffer operating under the control of a control syste ' n to display on a display screen multiple overlaid viewports, each assigned to a different application task, characterised in that the operating system includes: communication means, adapted to control the apparatus to receive data display information signals from an application processor, and processor means, adapted to control the procedure processor to store in a random access store indications of the position and size of each viewport area, together with an indication of the priority level of the viewport area, and to generate signals indicating the result of constructing a first matrix of (2n+1) 2 elements, where n is equal to the number of viewport areas, by assigning a vertical component to each vertical coordinate of each viewport area and a horizontal component to each horizontal coordinate of each viewport area, and for each element so formed storing an indication of the highest priority level of the viewports covered by the element; to construct a second matrix for the viewport area, the display of which is to be changed, by storing, for each element, an indication whether or not it covers the particular viewport that is to be changed, and associating the corresponding elements of identical rows and columns together, and using the second matrix to determine the coordinates of the received display information that can be displayed in the viewport area and to generate and store signals indicative of the determination.
Claim 5
Dependent Claim
36 words
Display apparatus as claimed in claim 2 in which the communication means and the processor means are included in a control store in the form of control signals defining the sequence of operations of the apparatus.