High resolution low bandwidth portable telecommunication system

• US 4,010,322 A
• Filed: 07/28/1975
• Issued: 03/01/1977
• Est. Priority Date: 07/28/1975
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Corporation (Paramount Global (f/k/a ViacomCBS Inc.))
• Original Assignee: Westinghouse Electric Corporation (Paramount Global (f/k/a ViacomCBS Inc.))
• Inventors: Nathanson, Harvey C.
• Primary Examiner(s): Britton, Howard W.
• Application Number:
  US05/599,492
• Time in Patent Office: 582 Days
• Field of Search: 178/7.85, 178/7.91, 178/7.5 R, 178/7.5 D, 178/7.84, 178/7.87, 178/7.88, 325/318, 325/319, 325/352, 340/311
• US Class Current: 348/771
• CPC Class Codes: H04N 5/7425 the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector

Abstract

A lightweight small volume high resolution telecommunicator display receiver and system in which the display is produced by using a high resolution cathode ray tube having an electostatically deflectable light reflective light valve array target for modulating light corresponding to the video signal to produce the display.

Claims

1. A high resolution telecommunicator display receiver comprising:

a. input signal receiver means;

b. a high resolution cathode ray tube, which includes a light transmissive faceplate from which is closely internally spaced an electrostatically deflectable, light reflective, light valve array target;

c. the light array target includes an array of spaced apart, individually electronic charge addressable members which are deflectable as a function of an electronic charge thereon;

d. cathode ray tube drive means connected between the input signal receiver means and the cathode ray tube for establishing an electron charge pattern on the light valve target array corresponding to the communicated display image input signal, which charge pattern is maintained thereon without additional power input;

e. display image readout means comprising optical means and a light source coupled to the cathode ray tube faceplate for projecting light upon the light valve target, with the reflected light from such target being modulated in correspondence to the degree of deflection of individual light valves, which reflected light is focused in an image viewing plane;

f. integral power supply means for providing power to the receiver means and the cathode ray tube drive means, of less than about 5000 milliwatts, and power for the light source.

2. The high resolution telecommunicator display receiver specified in claim 1, wherein the light valve array target comprises rows and columns of individual light valves which comprise a central support post extending from the light transmissive faceplate to the underside of a generally planar, deflectable, light reflective element which is disposed generally parallel to the faceplate.

3. The high resolution telecommunicator display receiver specified in claim 2, wherein a plurality of symmetrical spaced slits are provided in the planar, deflectable light reflective element radiating outward from the central support post and defining individually deflectable segments of the element.

4. The high resolution telecommunicator display receiver specified in claim 1, wherein the display can be stored as an electronic charge on the light valves and the display image can be repeatedly read out without altering the charge pattern by actuating the light source, with the light source power being the only power requirement for such readout.

5. The high resolution telecommunicator display receiver specified in claim 1, wherein the operational power requirement for the display receiver is about 5000 milliwatts.