Mobile telecommunications device with image sensor directed internally and externally

• US 7,900,842 B2
• Filed: 06/17/2010
• Issued: 03/08/2011
• Est. Priority Date: 05/27/2004
• Status: Expired due to Fees

• Current Assignee: Silverbrook Research Pty Limited
• Original Assignee: Silverbrook Research Pty Limited
• Inventors: Silverbrook, Kia, Walmsley, Simon Robert
• Primary Examiner(s): ST CYR, DANIEL
• Application Number:
  US12/817,185
• Publication Number:
  US 20100248781A1
• Time in Patent Office: 264 Days
• Field of Search: 235/379, 235/380, 235/375, 235/486, 235/462.45, 235/472.01, 235/462.42, 705/43, 705/35, 902/8, 902/12, 902/13, 902/38
• US Class Current: 235/472.01
• CPC Class Codes: B41J 2/17546 electronically

Abstract

The invention provides for a mobile telecommunications device that decodes tags of coded data printed on media present at points internal and external of the device. The device has an image sensor and a beam splitter for deflecting incoming light onto the image sensor. The device also includes a first infrared LED operatively directing light onto external media at the external point, with an infrared filter configured to receive light reflected from the external media onto the beam splitter. Also included is a second infrared LED operatively directing light onto media present in the internal pathway, with a mirror arrangement configured to direct light reflected from the internal media into the beam splitter.

Claims

1. A mobile telecommunications device for sensing coded data on media placed internally or externally of the mobile telecommunications device, the device comprising:

an image sensor;

a beam splitter for deflecting light from an external point outside the device onto the image sensor, and deflecting light from an internal point within the device onto the image sensor;

a first infrared LED operatively directing light onto external media at the external point;

an infrared filter configured to receive light reflected from the external media onto the beam splitter;

a second infrared LED operatively directing light onto internal media present at the internal point; and

a mirror arrangement configured to direct light reflected from the internal media into the beam splitter.

2. The mobile telecommunications device of claim 1, further comprising a lens arrangement adjacent the infrared filter configured to improve a signal to noise ratio of the reflected light by directing the infrared light onto the beam splitter.

3. The mobile telecommunications device of claim 1, wherein the mirror arrangement includes a first turning mirror and a second turning mirror for turning light reflected from the internal media through an aperture onto the beam splitter.

4. The mobile telecommunications device of claim 1, wherein the mobile telephone includes a non-marking nib slidably mounted to be selectively moveable between a retracted position and an extended position by manual operation of a slider of the mobile telephone.

5. The mobile telecommunications device of claim 4, wherein the slider is biased outwardly from the mobile telephone and includes a ratchet mechanism for retaining the nib in the extended position.

6. The mobile telecommunications device of claim 4, wherein one end of the nib abuts a switch which is operatively connected to circuitry controlling operation of the LEDs and the image sensor.

7. The mobile telecommunications device of claim 6, wherein the switch is configured to activate the LEDs and image sensor when the nib is in the extracted position and is pressed against the external media.