Image communication system and method

• US 5,550,646 A
• Filed: 09/13/1993
• Issued: 08/27/1996
• Est. Priority Date: 09/13/1993
• Status: Expired due to Term

• Current Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Johnston, Russel R., Hassan, Ahmad M., Krejci, John C.
• Primary Examiner(s): VU, KIM Y
• Application Number:
  US08/120,254
• Time in Patent Office: 1,079 Days
• Field of Search: 358/400, 358/440, 358/468, 358/442, 358/909.1, 358/456, 358/457, 379/96-98, 379/100, 348/14, 348/17, 348/18, 370/94.1, 370/94.2, 370/95.1
• US Class Current: 358/442
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/2154 the still video camera incorporating a hardcopy reproducing device, e.g. a printer
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 2201/0049 By wire, cable or the like
• CPC Class Codes: H04N 2201/0086 Image transceiver H04N2201/0093 and H04N2201/0094 take precedence

Abstract

An image communication system and method includes an image capture device which utilizes CCD technology to "take a picture", i.e., to capture an image, and then to generate a digital representation of that image which may be applied to a fax modem and then transmitted to a remote facsimile machine via a telephone communication link. The digital image is processed, such as by dithering, to enhance its presentability, so that shades of gray present in a conventional black and white photograph are converted to a pattern of black and white dots which retains the character of the original image in spite of subsequent facsimile transmission. The image capture device may include a printer and a memory for storing multiple images as well as the destination numbers of facsimile machines which are intended to receive copies of the images.

Claims

1. An image communication system comprising

a portable image capture device including means arranged to generate digital representations of images;

means for processing said digital representations so that shades of gray present in said images are converted to patterns of black and white dots;

memory means for storing destination numbers of facsimile machines which are intended to receive copies of said images;

a Group III compatible fax modem; and

means for supplying one of said stored destination numbers and one of said processed digital representations to said fax modem, so that said image may be transmitted to a remote Group III compatible facsimile machine.

2. The invention defined in claim 1 wherein said image communication system further includes a printer arranged to print a copy of said processed digital representations.

3. The invention defined in claim 1 wherein said memory means is arranged to store multiple images.

4. The invention of claim 1 wherein said portable image capture device includes a CCD camera.

5. An image communication method comprising the steps of

generating a digital representation of an image in a portable image capture device;

processing said digital representation so that shades of gray present in said image are converted to a pattern of black and white dots;

storing said digital representation as well as destination numbers of Group III compatible facsimile machines which are intended to receive copies of said images in a memory in said portable device; and

supplying one of said stored destination numbers and one of said processed digital representations to a Group III compatible fax modem in said portable device, so that said image may be transmitted from said portable device to one or more remotely located ones of said facsimile machines.

6. The method defined in claim 5 wherein said method further includes the step of storing multiple images in said memory.

7. The invention of claim 5 wherein said portable image capture device includes a CCD camera.