Card reader display system

• US 6,486,862 B1
• Filed: 05/09/1997
• Issued: 11/26/2002
• Est. Priority Date: 10/31/1996
• Status: Expired due to Term

• Current Assignee: Kopin Corporation
• Original Assignee: Kopin Corporation
• Inventors: Fan, John C. C., Zavracky, Matthew, Bumgardner, Rodney, Richard, Alan, Pombo, Stephen A., Jacobsen, Jeffrey
• Primary Examiner(s): Shankar, Vijay
• Application Number:
  US08/853,630
• Time in Patent Office: 2,027 Days
• Field of Search: 345/87, 345/88, 345/92, 345/102, 345/507, 345/901, 345/32, 348/744, 348/750, 348/751, 235/380
• US Class Current: 345/88
• CPC Class Codes: G02B 25/002 Magnifying glasses
• CPC Class Codes: G09G 2300/0408 Integration of the drivers onto the display substrate
• CPC Class Codes: G09G 2310/0235 Field-sequential colour display
• CPC Class Codes: G09G 2310/0283 Arrangement of drivers for different directions of scanning
• CPC Class Codes: G09G 2310/063 Waveforms for resetting the whole screen at once
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2320/041 Temperature compensation
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2340/0407 Resolution change, inclusive of the use of different resolutions for different screen areas
• CPC Class Codes: G09G 2340/0492 Change of orientation of the displayed image, e.g. upside-down, mirrored
• CPC Class Codes: G09G 3/001 using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background slide projectors per se G03B23/00 = 42 HP
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence
• CPC Class Codes: G09G 3/3659 the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: G09G 5/18 Timing circuits for raster scan displays specially adapted for television H04N ; synchronisation between the display unit and other display units, videodisc player G09G5/12
• CPC Class Codes: G09G 5/39 Control of the bit-mapped memory
• CPC Class Codes: G09G 5/391 Resolution modifying circuits, e.g. variable screen formats
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/021 : using combined folding and rotation motions combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0214 : Foldable telephones, i.e. with body parts pivoting to an open position around an axis parallel to the plane they define in closed position combined with translation movement H04M1/0235
• CPC Class Codes: H04M 1/0247 : comprising more than two body parts
• CPC Class Codes: H04M 1/0254 : comprising one or a plurality of mechanically detachable modules
• CPC Class Codes: H04M 1/0264 : for a camera module assembly
• CPC Class Codes: H04M 2250/20 : including a rotatable camera
• CPC Class Codes: H04N 7/142 : Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 9/3141 : Constructional details thereof details not peculiar to the presence of an electronic spatial light modulator G03B21/14

Abstract

The invention relates to a micro display system that utilizes a small high resolution active matrix liquid crystal display with an illumination system and a magnifying optical system to provide a hand held communication display device. The system can employ an LED illumination system and cellular communication or processor circuits within a compact housing to provide communication devices such as pagers, telephones, televisions, and hand held computer or card reader devices with a compact high resolution data and/or video display.

Claims

1. A card reader system comprising:

a card reader that reads information from a card;

a card slot that receives the card relative to the card reader;

a control circuit connected to the card reader for controlling the card reader and for processing the information;

a control panel for controlling the control circuit;

a display system for displaying the information, the display system having a display circuit that is connected to the control circuit and generates display data, an active matrix liquid crystal display that presents the display data as an image, and a light emitting diode (LED) backlight that illuminates the image;

a battery for powering the display system, the control circuit, and the control panel;

an optical system along an optical path with the display to magnify the image for viewing by a user; and

a power management circuit that controls the power consumption of the display circuit such that after the image is illuminated, the power management circuit lowers the power consumption of the display circuit until the next image is ready to be presented on the matrix liquid crystal display.

2. The card reader system of claim 1 further comprising a housing having the control panel, and the card slot including an opening in the housing.

3. The card reader system of claim 1 wherein the matrix display comprises a color liquid crystal display.

4. The card reader system of claim 1 wherein the matrix display further comprises an array of transistor circuits formed with single crystal silicon, the array of transistor circuits being bonded to an optically transmissive substrate with an adhesive layer.

5. The card reader system of claim 1 wherein the display circuit further comprises a color sequential display circuit.

14. The card reader system of claim 1 wherein the display circuit includes a timing circuit that controls when the power management circuit lowers the power consumption of the display circuit.

15. The card reader system of claim 1 wherein the matrix display includes an array of at least 320 by 240 pixel electrodes and has an active area of less than 100 mm², the pixel electrodes each having a width of 15 microns or less.

6. A card reader system comprising:

a housing;

a card reader that reads information from a card;

a port in the housing for receiving the card and positioning the card relative to the card reader;

a control circuit connected to the card reader for controlling the card reader and for processing the information;

a control panel carried by the housing for controlling the control circuit;

a display circuit connected to the control circuit for generating display information;

a color sequential matrix display mounted to the housing and that presents the information from the display circuit as an image;

a light emitting diode (LED) device that is optically coupled to the display, the LED device illuminating the image presented on the display;

a battery carried in the housing to provide power to the color sequential display circuit;

an optical system along an optical path with the display to magnify the image; and

a power management circuit that controls the power consumption of the display circuit such that after the image is illuminated, the power management circuit lowers the power consumption of the display circuit until the next image is ready to be presented on the color sequential matrix display.

7. The card reader system of claim 6 wherein the card reader is capable of writing information to the card.

8. The card reader system of claim 6 wherein the matrix display comprises an active matrix liquid crystal display.

9. The card reader system of claim 6 wherein the matrix display further comprises an array of transistor circuits formed with single crystal silicon, the array of transistor circuits being bonded to an optically transmissive substrate with an adhesive layer.

16. The card reader system of claim 6 wherein the display circuit includes a timing circuit that controls when the power management circuit lowers the power consumption of the display circuit.

17. The card reader system of claim 6 wherein the matrix display has an active area of less than 100 mm².

10. A card reader system comprising:

a housing;

a card reader that reads information from a card;

a port in the housing for receiving the card and positioning the card relative to the card reader such that information can be read from the card;

a control circuit connected to the card reader for controlling the card reader and for processing the information;

a control panel carried by the housing for controlling the control circuit;

a display circuit connected to the control circuit that generates display data;

an active matrix liquid crystal display mounted to the housing and that presents the display data as an image;

a light emitting diode (LED) device that is optically coupled to the display, the LED device illuminating the image presented on the display;

a battery carried in the housing for powering the control circuit, the display circuit, the display and the LED device;

an optical system along an optical path with the display to magnify the image; and

a power management circuit that controls the power consumption of the display circuit such that the image is illuminated, the power management circuit lowers the power consumption of the display circuit until the next image is ready to be presented on the active matrix liquid crystal display.

11. The card reader system of claim 10 wherein the card reader is capable of writing information to the card.

12. The card reader system of claim 10 wherein the matrix display further comprises an array of transistor circuits formed with single crystal silicon, the array of transistor circuits being bonded to an optically transmissive substrate with an adhesive layer.

13. The card reader system of claim 10 further comprising a color sequential display circuit.

18. The card reader system of claim 10 wherein the display circuit includes a timing circuit that controls when the power management circuit lowers the power consumption of the display circuit.

19. The card reader system of claim 10 wherein the matrix display includes at least 75,000 pixel electrodes defining an active area of less than 160 mm².