Portable image input device

• US 4,947,261 A
• Filed: 07/07/1988
• Issued: 08/07/1990
• Est. Priority Date: 07/08/1987
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Ishikawa, Toshio, Kurata, Yukio
• Primary Examiner(s): Groody, James J.
• Assistant Examiner(s): Vu, Kim Yen
• Application Number:
  US07/216,268
• Time in Patent Office: 761 Days
• Field of Search: 358/285, 358/474, 358/293, 358/494, 358/294, 358/471, 358/286, 358/476, 358/472, 358/473, 358/475, 382/59, 235/472, 250/227, 364/709.1, 364/708, 364/403, 364/405, 346/76 PH
• US Class Current: 358/473
• CPC Class Codes: H04N 1/03 with photodetectors arranged in a substantially linear array
• CPC Class Codes: H04N 1/0313 Direct contact pick-up heads, i.e. heads having no array of elements to project the scanned image elements onto the photodectors
• CPC Class Codes: H04N 1/0315 using photodetectors and illumination means mounted on separate supports or substrates or mounted in different planes
• CPC Class Codes: H04N 1/0402 Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards H04N1/00283 takes precedence; picture signal circuits for modification of image resolution H04N1/3935, H04N1/40068
• CPC Class Codes: H04N 1/0408 Different densities of dots per unit length
• CPC Class Codes: H04N 1/0435 Optical element switching, e.g. switching lenses into a single optical path
• CPC Class Codes: H04N 1/0455 using a single set of scanning elements, e.g. the whole of and a part of an array respectively for different formats
• CPC Class Codes: H04N 1/107 with manual scanning
• CPC Class Codes: H04N 1/1075 Arrangements for facilitating holding of the scanner, e.g. shapes, grips
• CPC Class Codes: H04N 1/1935 Optical means for mapping the whole or part of a scanned line onto the array
• CPC Class Codes: H04N 2201/0048 Type of connection
• CPC Class Codes: H04N 2201/0077 Types of the still picture apparatus
• CPC Class Codes: H04N 2201/02493 Additional optical elements not otherwise provided for, e.g. filters, polarising plates, masks or apertures

Abstract

An image input device of a portable type includes a light source for reading an original document, a photo-electric converting element for converting reflected light from the original document into an electrical signal, a memory function section having a solid state memory element for storing the output of the photo-electric converting element, an output port for allowing external connections, and operating keys for operating the image input device. Furthermore, the image input device may include a diffraction grating for diffracting the reflected light to form an image on the photo-electric converting element and interchangeable lenses having different focal lengths for achieving various magnifications.

Claims

1. An image input device of a portable type, comprising:

a light source for emitting light onto an information medium;

image forming optical means for collecting said light emitted by said light source when reflected from said information medium and directing said light reflected from said information medium;

photo-electric converting means for developing an image signal representative of an image on said information medium as reflected by said light and directed by said image forming optical means;

a memory function section having a solid state memory element for storing said image signal from said photo-electric converting means;

an output port for removably connecting external devices with said memory function section; and

operating keys for operating said image input device;

said image forming optical means having a portion for receiving interchangeable lenses by removably attaching and detaching said lenses to said portion.

2. An image input device as claimed in claim 1, wherein said light source comprises a semiconductor laser.

3. An image input device as claimed in claim 1, wherein said photo-electric converting means comprises a CCD.

4. An image input device as claimed in claim 1, wherein said image forming optical means comprises at least one image forming lens for converging said light reflected from said information medium and a diffraction grating for directing said light.

5. An image input device as claimed in claim 1, wherein said memory function section comprises connecting means for removably attaching and detaching said exchangeable memory means with said photo-electric converging means.

6. An image input device of a portable type, comprising:

a light source for emitting light onto an original document;

photo-electric converting means for developing an electrical signal representative of an image on said original document as reflected by said light from said original document;

exchangeable memory means for storing said electrical signal from said photo-electric converting means;

an output port for removably connecting an external device with said exchangeable memory means; and

operating keys for operating said image input device.

7. An image input device as claimed in claim 6, wherein said exchangeable memory means comprises a RAM, memory refresh means, a CPU, and a power source.

8. An image input device as claimed in claim 7, wherein said electrical signal is converted to a digital signal by said CPU and said digital signal is stored in said RAM.

9. An image input device as claimed in claim 6, wherein said exchangeable memory means comprises connecting means for attaching and detaching said exchangeable memory means with said photo-electric converting means.

10. An image input device of a portable type, comprising:

a light source for emitting light towards an information medium;

image forming optical means for converging said light onto said information medium and directing said light reflected from said information medium;

photo-electric converting means for developing an image signal representative of an image on said information medium as reflected by said light from said image forming optical means;

exchangeable memory means for storing said image signal from said photo-electric converting means;

an output port for removably connecting external devices with said exchangeable memory means; and

operating keys for operating said image input device.

11. An image input device as claimed in claim 10, wherein said image forming optical means comprises diffraction grating means and a lens.

12. An image input device as claimed in claim 10, wherein said light source comprises a semiconductor laser.

13. An image input device as claimed in claim 11, wherein said light source, said photo-electric converting means and said diffraction grating means are hermetically sealed in a unit.

14. An image input device as claimed in claim 13, wherein said unit further comprises connecting means for removably attaching and detaching said unit with said exchangeable means.