Pattern display apparatus

Claim 2

Pattern display apparatus comprising a cathode ray tube including a cathode electrode, a plurality matrix electrodes arranged in a matrix, a fluorescent screen, focusing means and deflection means which are disposed between said matrix electrodes and said fluorescent screen; a pattern memory connected to said matrix electrodes for storing the patterns of letters, digits, symbols etc. to be displayed; a memory for supplying an enlargement or a reduction signal and a position designation signal of the information of the pattern to be displayed; an enlargement-reduction control connected to said supply memory for controlling the potential applied to said focusing means of said cathode ray tube in accordance with said enlargement or reduction signal supplied from said memory; and a position designator connected to said supply memory for converting the position designation signal into an analogue signal and for supplying said analogue signal to said deflecting means, whereby said focusing means operates to enlarge or reduce the pattern displayed on said fluorescent screen in accordance with said enlargement or reduction signal supplied from said memory and said position designator operates to position said pattern on said fluorescent screen.

Claim 3

The display apparatus according to claim 1 wherein the output from said position designator is controlled according to said enlargement or reduction signal supplied from said memory to adjust the spacing between adjacent patterns displayed.

Claim 4

The display apparatus according to claim 1 which further comprises a grid electrode disposed between said matrix electrodes and said cathode electrode of said cathode ray tube and a digital-analogue converter connected between said supply memory and said grid electrode for converting said enlargement or reduction signal into an analogue signal to maintain at a definite value the brightness of said enlarged or reduced pattern.

Claim 5

Display apparatus comprising a cathode ray tube including a cathode electrode for emitting electrons, a first grid electrode, a Y-axis matrix electrode, a X-axis matrix electrode, a second grid electrode, a focusing electrode, deflection means and a fluorescent screen; said component elements of said cathode ray tube being disposed in the order mentioned along the path of said electrons, said X and Y axis matrix electrodes comprising a plurality of electrode elements which are arranged in a matrix and provided with aligned perforations at their cross points, and said focusing electrode and said second grid electrode cooperating to constitute a lens system; a memory for storing the information of the patterns to be displayed; a decoder connected to said memory for converting the information of a given pattern into a pattern selection signal, an enlargement-reduction signal and a position designation signal; a position designator connected to said decoder to receive therefrom said position designation signal; a first digital-analogue converter connected to said position designator for applying an analogue deflection signal to said deflection means; first means responsive to said enlargement-reduction signal from said decoder for energizing said focuusing electrode and said second grid electrode to enlarge or reduce said displayed pattern, and a pattern memory connected to said decoder to receive therefrom said pattern selection signal and apply it to said matrix electrodes.

Claim 6

Display apparatus comprising a cathode ray tube including a cathode electrode for emitting electrons, a first grid electrode, a Y-axis matrix electrode, a X-axis matrix electrode, a second grid electrode, a focusing electrode, deflection means and a fluorescent screen; said component elements of said cathode ray tube being disposed in the order mentioned along the path of said electrons, said X and Y axis matrix electrodes comprising a plurality of electrode elements which are arranged in a matrix and provided with aligned perforations at their cross points, and said focusing electrode and said second grid electrode cooperating to constitute a lens system; a memory for storing the information of the patterns to be displayed; a decoder connected to said memory for converting the information of a given pattern into a pattern selection signal, an enlargement-reduction signal and a position designation signal; a position designator connected to said decoder to receive therefrom said position designation signal; a first digital-analogue converter connected to said position designator for applying an analogue deflection signal to said deflection means; first means responsive to said enlargement-reduction signal from said decoder for energizing said focuusing electrode and said second grid electrode to enlarge or reduce said displayed pattern, and a pattern memory connected to said decoder to receive therefrom said pattern selection signal and apply it to said matrix electrodes.

Claim 7

The display apparatus according to claim 4 which further comprises second means responsive to said enlargement-reduction signal from said decoder for energizing said first grid electrode of said cathode ray tube for controlling the quantity of electrons impinging upon said matrix electrodes to regulate the brightness of the pattern displayed on said fluorescent screen.

Claim 8

The display apparatus according to claim 4 wherein said first means comprises digital-analogue converters for converting said enlargement-reduction signals into analogue signals.

Claim 9

The display apparatus according to claim 4 wherein said first means comprises controls responsive to said enlargement-reduction signal for producing control voltages for energizing said focusing electrode and said second grid electrode.

Claim 10

The display apparatus according to claim 4 which further includes a buffer register connected between said memory and said decoder.

Claim 11

The display apparatus according to claim 4 wherein said pattern memory comprises a diode matrix connected between said decoder and said matrix electrodes.

Claim 12

The display apparatus according to claim 5 wherein said second means comprises a digital-analogue converter for converting said enlargement-reduction signal into an analogue signal.

Claim 13

The display apparatus according to claim 5 wherein said second means comprises a control responsive to said enlargement-reduction signal for producing a control voltage for energizing said first grid electrode.

Claim 14

The display apparatus according to claim 4 wherein the output of said position designator is controlled according to said enlargement or reduction signal supplied from said memory to adjust the spacing between adjacent patterns displayed.