Loading patent…
AssigneeScience Applications, Inc.
InventorWilliam J. Coates, Jr.
Estimating the term…
A method and apparatus for modulating the perceptible intensity of the presentation of a light emitting display which light emitting display emits light by gas discharge and recombination of ions and free electrons of a display medium; includes a system clock, the interruption of which causes the interruption of the presentation of the light emitting display; and is capable of retaining display information upon the interruption of a light sustaining signal or the electrical power as a result of an accumulation and retention of electrical charge across the display medium. The apparatus comprising a repetition means for generating a repetition pulse train signal having a controllable frequency and duty cycle; an indication means for generating a retention signal that identifies when the light emitting display is capable of retaining display information; a synchronization means coupled to said repetition means and to said indication means for generating a gating signal which is synchronized with the retention signal and the repetition pulse train signal; and stopping means coupled to said synchronization means for interrupting the system clock in synchronization with the gating signal. Variations of this invention include circuitry which generates a control system clock signal by clock pulse train generator and modified stopping means. Other variations enable the light emitting display to be turned off over extended periods of time.
An apparatus for interrupting the presentation of a light emitting display, said light emitting display being of the type which emits light by the ionization discharge of a display medium, and which includes a system clock signal, the interruption of which causes an interruption in the presentation of the light emitting display, and which is capable of retaining display information on the interruption of a light sustaining signal as a result of the accumulation and retention of electrical charge across said display medium, such apparatus comprising:
A method for interrupting the presentation of a light emitting display, said light emitting display being of the type which emits light as a result of the ionization discharge of a display medium, and which includes an internal system clock signal, the interruption of which results in the interruption of the presentation of the light emitting display, and which is capable of retaining display information upon the interruption of a light sustaining signal as a result of the accumulation and retention of electrical charge across said display medium, such method comprising:
An apparatus for modulating the perceptible intensity of the presentation of a light emitting display, said light emitting display being of the type which emits light by the ionization discharge of a display medium, and which includes a system clock signal, the interruption of which causes an interruption in the presentation of the light emitting display, and which is capable of retaining display information upon the interruption of a light sustaining signal as a result of the accumulation and retention of electrical charge across the display medium, such apparatus comprising:
A method for modulating the perceptible intensity of a light emitting display, said light emitting display being of the type which emits light by the ionization discharge of a display medium, and which includes a system clock signal, the interruption of which causes an interruption in the presentation of the light emitting display, and which is capable of retaining display information on the interruption of a light sustaining signal as a result of the accumulation and retention of electrical charge across the display medium, such method comprising:
Dependencies are inferred from the claim text.