AU2003202640B2 - Swipe palm computer - Google Patents

Description

WO 03/069453 PCT/AU03/00162 SWIPE PALM COMPUTER FIELD OF INVENTION The following invention relates to a hand-held personal computer known as a "palm PC", having a built-in printer.

BACKGROUND TO INVENTION Known palm PCs have no means of providing an "instant" print-out of text and/or images therefrom. Instead, if a print-out is needed, the palm PC must communicate data stored therein to another PC to which there is attached a printer.

The mere incorporation into a palm PC of a known conventional printer device would not result in a compact, easily portable palm PC. This is because prior printers incorporate a supply of print media and employ a print media feed mechanism to transport the print media past the printheads to effect printing onto the print media.

Moreover, known printers, having a supply of print media, are large and heavier than would be desirable in a portable palm PC that is sized and shaped to fit conveniently with a user's pocket or purse for example.

CO-PENDING APPLICATIONS Various methods, systems and apparatus relating to the present invention are disclosed in the following co-pending applications filed by the applicant or assignee of the present invention simultaneously with the present application: AP39 AP43 AP44 AP46 AP47 AP48 AP49 AP50 AP51 AP52 AP53 AP58 AP60 AP61 AP62 AP63 AP64 AP66 AP67 AP68 AP69 AP71 AP77 AP78 AP79 The disclosures of these co-pending applications are incorporated herein by cross-reference. Each application is temporarily identified by its file reference. This will be replaced by the corresponding PCT Application Number when available.

RELATED PATENT APPLICATIONS AND PATENTS US6,227,652 US6,213,588 US6,213,589 US6,231,163 US6,247,795 US6,394,581 US6,244,691 US6,257,704 US6,416,168 US6,220,694 US6,257,705 US6,247,794 US6,234,610 US6,247,793 US6,264,306 US6,241,342 US6,247,792 US6,264,307 US6,254,220 US6,234,611 US6,302,528 US6,283,582 US6,239,821 US6,338,547 US6,247,796 US09/113,122 US6,390,603 US6,362,843 WO 03/069453 WO 03/69453PCT/AU03/00162 US6293,653 US61238,040 US6.247,79 1 US6.243,113 US6,267,469 US6.443,558 US09/422,893 US09/575,1 13 US6,457,810 US6,246,970 US09/505,952 US09/607,985 US6,238,044 USO9/504,22 I US6,426,014 US09/556,218 US6,328,43 1 US6,464,332 US6,322,194 USO9/608,780 USO9/693, 135 USO9/693,3 11 PCT/AUOO/0051 6 PCT/AUOO/00755 PCT!AUOO!00172 PCT/AUOO/00341 PCT/AUOO/00587 PCT/AUOO/00593 PCT/AUOO/00584 PCT/AUOO/00750 PCT/ATJO1/013 18 PCT/AUOO/01 516 PCT/AU02/01 120 PCT/AU01/00140 PCT/AU01/01323 PCT/ALTOO/00597 US6,3 12,107 US6,188,415 US6,336,710 US6,283,581 US6,273,544 US09/422,892 US09/609,140 US6,3 18,920 US 6,485 ,135 US6,442,525 USO9/575, 108 US6,398,332 US6,425,661 US6,480,089 US6,364,453 U.S6,3 15,399 US6,328,425 US6,390,591 TJS09/575, 177 US6,428,139 US6,428,142 US6,439,908 PCT/AUOOOO5 17 PCT/AUOO/00756 PCT/AUOO/00338 PCT/AUOO/0058 1 PCT/AUOO!00588 PCT/AUOO/00590 PCT/AUOO/00585 PCT/AUOO/0075 1 PCT/AUOO/015 13 PCT/AUOO/015 17 PCT/AUOO/00333 PCT/AU00/00753 PCT/AUOO/00594 PCT/AU00/00598 US6,227,653 US6,227,654 US6,2 17,153 US6,247,790 US6,309,048 US6,378,989 US6,409,323 US6,488,422 US09/1 12,763 US09/505,95 1 US09/5 75,109 US6,394,573 US6,390,605 US6,460,778 US6,457,795 US6,33 8,548 US09/575,127 US09/575,1 52 US09/575,175 US09/607,498 US09/692,8 13 US09/693,735 PCT/AUOO/0051 1 PCT/AUOO/00757 PCT/AUOO/00339 PCT/AUOO/00580 PCT/AUOO/00589 PCT/AUOO/00591 PCT/AU00/00586 PCT/AU00/00752 IPCT/AU0O/01514 PCT/AUOO/015 12 PCT/AUO1/00141 PCT/AUO1/01321 PCT/AUOO/00595 PCT/AUOO/00741 US6,234,609 US6,209,989 US6,416,167 US6,260,953 US6,420, 196 US09/425,420 US6,28 1,912 US09J693,644 US6,33 1,946 US09/505,147 US09/575,1 USO9/606,999 US6,322, 195 US6,305,788 US09/556,2 19 US09/575,190 US6,383,833 US6,328,417 US6,41 7,757 US09/693,079 US09/693,3 19 PCT/AU98/00550 PCT/AUOO/C0754 PCT/AUOO/00095 PCT/AUOO/00340 PCT/AUOO/00582 PCT/AUOO/00583 PCT/AUOO/00592 PCT/AU00/00749 PCT/AU01/01332 PCT/AU00/01515 PCT/AU01/00502 PCT/AU01/00 139 PCT/AUOI/01322 PCT/AU0O/00596 PCT/AUOO/00742 SUMMARY OF THE INENTION In accordance with the invention, there is provided a digital palm PC comprising: a housing; WO 03/069453 PCT/AU03/00162 a digital storage device to store digitally text and/or image data; and a printer located within the housing and receiving digital information from the digital storage device, the printer being configured to print an image on media external thereto as the palm PC traverses the media in a printing orientation.

Preferably, the palm PC further includes a movement sensor configured to measure the relative movement of the palm PC as it traverses the media in the printing orientation. More preferably, the movement sensor includes a wheel configured to engage the media as the palm PC traverses the media in the printing orientation, In one embodiment, the wheel is an optical encoder wheel including a series of circumferential markings, the movement sensor further including an optical sensor for detecting relative movement of the markings as the wheel rotates in engagement with the media.

Alternatively, the movement sensor forms part of an optical tracking system for tracking relative movement of the palm PC as it traverses the media in the printing orientation. In one form, the optical tracking system includes pattern recognition means for recognising relative movement of the palm PC with respect to the media. The optical tracking system can be configured to recognise a predetermined pattern on the media, and to recognise the relative movement of the palm PC with respect to the media by determining relative movement of the palm PC with respect to the predetermined pattern.

Preferably, the housing also includes a print controller including a processor into which image data can be input and converted into a sequence of drop ejection control signals. The print controller operates said ink ejection nozzles in accordance with said drop ejection control signals to cause printing on said print media at a rate determined by the measured relative movement of palm PD with respect to the media.

Preferably, the printer includes a drop-on-demand color inkjet printhead.

In a preferred form, the palm PC further includes an ink reservoir in fluid communication with the printhead for providing ink thereto. Preferably, the ink reservoir includes at least one ink inlet via which the ink reservoir can be recharged with ink.

BRIEF DESCRIPTION OF THE DRAWINGS A preferred embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Fig. 1 is a schematic perspective illustration of a palm PC having a built-in printer in use, printing an image on a page; Fig. 2 is perspective illustration of a palm PC shown from above; Fig. 3 is a schematic perspective illustration of a palm PC shown from below; Fig. 4 is a schematic parts-exploded perspective view of the palm PC; WO 03/069453 PCT/AU03/00162 Fig. 5 is a schematic perspective illustration of the major internal components of the palm PC; Fig. 6 is a front elevational view of the palm PC; Fig. 7 is a side elevational view of the palm PC; Fig. 8 is an end elevational view of the palm PC; and Fig. 9 is a schematic cross-sectional elevational view of the palm PC taken at IX-IX in Fig. 8.

DESCRIPTION OF THE PREFERRED EMBODIMENT In Fig. 1 of the accompanying drawings there is schematically depicted a palm PC 10 having an integral printer. The palm PC is sized and shaped to fit within a typical purse or pocket user and is shown in the figure traversing a page of print media 11 to print an image 12 thereon.

As shown in Fig. 2, the palm PC includes a housing having a top molding 13 and a base molding 14. These moldings house the internal components of the device. The palm PC includes a color liquid crystal display (LCD) and touch screen 20. A stylus 21 fits within a receptacle in the palm PC and is used to touch the LCD and touch screen 20 to operate the device. Function buttons 19 also serve to control the functioning of the palm PC.

At the bottom edge of the palm PC 10 there is provided a printhead 15 flanked at either end by wheels 16 and 22. Wheel 16 is an optical encoder wheel, whereas wheel 22 is an idler wheel. These wheels may be connected so as to rotate in unison upon a common shaft. The operation of optical encoder wheel 16, idler wheel 22 and printhead 15 is described in detail our co-pending application (AP46) entitled "Portable Printer and Copier", the content of which is specifically incorporated herein by cross-reference.

The printhead 15 can be capped and uncapped selectively by a capping device (not shown), which is described in our co-pending application (AP44) entitled "Capping Device for a Portable Printer", the content of which is specifically incorporated herein by cross-reference. As an alternative to a capping device, an ink seal 36 may be provided. This might be in the form of a removable strip of elastomeric material.

As shown in Fig. 3, the palm PC 10 includes ink inlets 17 via which an internal ink reservoir having separate compartments can be refilled with ink. A battery charger and communications port module 18 are located, in this embodiment, on the same side of the palm PC as the ink inlets 17.

As shown in the exploded perspective illustration of Fig. 4, the LCD and touch screen 20 sits upon a printed circuit board 26. A number of function switches 37 are mounted on the PCB 26 and aligned with function buttons 19 so as to be depressed when the buttons 19 are used. A battery 23 which is preferably a lithium-ion rechargeable battery resides alongside the PCB and is connected electrically to the charger port module 18 and the PCB 26. A speaker 24 is also provided. The ink inlets communicate with respective compartments within reservoir 29. These compartments are best illustrated in Fig. 9. The individual ink compartments relay ink to the printhead unit WO 03/069453 PCT/AU03/00162 As depicted in Fig. 5, the PCB 26 has attached thereto a dynamic random access memory (DRAM) chip 31, a print engine controller (PEC) chip 30, a QA chip 27 and a flash memory chip 28. The battery 23 connects to the PCB at connector block 38 and a ribbon cable for flexible PCB 39 connects the power and communications port module 18 to the PCB 26 via a connector block As shown in Fig. 9, the ink reservoir 29 is divided into a number of longitudinal compartments. In the depicted embodiment, there are separate compartments for cyan ink 32, magenta ink 33, black ink 34 and yellow ink 35. Ink from these compartments is transferred to printhead Power and data transfer from the PCB 26 to the printhead 15 can be by direct connection between those two units. That is, the printhead 15 may have electrical contacts soldered directly onto the PCB 26. However, in alternate configurations, an intermediate flexible PCB extending between the printhead 15 and PCB 26 can be used.

In use, the palm PC 10 can be operated by use of the stylus 21 upon the color LCD and touch screen Function buttons 19 can also be manipulated as required. When a printed image of text and/or graphics is desired, a print command can be initiated either by use of a stylus 21 or function buttons 19. A user then draws the printhead 15 over a sheet of print media (in this case paper) as shown in Fig. 1. The ejection of ink by printhead 15 upon print media 11 is controlled by the PEC chip 30 in response to signals received from the optical encoder wheel 16 which contacts the surface of the print media 11 and rotates in use. Details of this interaction can be found in our co-pending application AP46 as cross-referenced above.

The internal configuration of components within the housing of the palm PC can vary depending upon requirements. For example, the printhead and ink cartridge can be an integral unit or formed separately. The printhead can extend generally normal to the extent of the ink cartridge or parallel thereto. In a further embodiment, instead of providing only two wheels 16 and 22 (one optical encoder wheel and one idler wheel) on a narrow edge of the palm PC, three, four, or more wheels might be provided say in the broad back face of base molding 14. In the case of four wheels being provided, they can be disposed in a rectangular layout in plan. One of the wheels would be an optical encoder wheel and the other wheels idler wheels. The printhead can be located generally within a space defined by a rectangle with a wheel at each corner.

Although the invention has been described with reference to a number of specific embodiments, it will be appreciated by those skilled in the art that the invention can be embodied in many other forms.

Claims (15)

1. A digital palm PC comprising: a housing; a digital storage device to store digitally text and/or image data; and a printer located within the housing and receiving digital information from the digital storage device, the printer being configured to print an image on media external thereto as the palm PC traverses the media in a printing orientation.

2. The palm PC of claim 1, further including a movement sensor configured to measure the relative movement of the palm PC as it traverses the media in the printing orientation.

3. The palm PC of claim 2, wherein the movement sensor includes a wheel configured to engage the media as the palm PC traverses the media in the printing orientation,

4. The palm PC of claim 3, wherein the wheel is an optical encoder wheel including a series of circumferential markings, the movement sensor further including an optical sensor for detecting relative movement of the markings as the wheel rotates in engagement with the media.

5. The palm PC of claim 2, wherein the movement sensor forms part of an optical tracking system for tracking relative movement of the palm PC as it traverses the media in the printing orientation.

6. The palm PC of claim 5, wherein the optical tracking system includes pattern recognition means for recognising relative movement of the palm PC with respect to the media.

7. The palm PC of claim 5, wherein the optical tracking system is configured to recognise a predetermined pattern on the media, and to recognise the relative movement of the palm PC with respect to the media by determining relative movement of the palm PC with respect to the predetermined pattern.

8. The palm PC of any one claims 2 to 7, wherein the housing also includes a print controller including a processor into which image data can be input and converted into a sequence of drop ejection control signals, said print controller operating said ink ejection nozzles in accordance with said drop ejection control signals to cause printing on said print media at a rate determined by the measured relative movement of palm PD with respect to the media.

9. The palm PC of claim 1 or 2, wherein the printer includes a drop-on-demand color inkjet printhead. The palm PC of claim 1 or 2, further including an ink reservoir in fluid communication with said printhead for providing ink thereto.

WO 03/069453 PCT/AU03/00162

11. The palm PC of claim 10, wherein said ink reservoir includes at least one ink inlet via which the ink reservoir can be recharged with ink.

12. The palm PC of claim 1, further including a rechargeable battery.

13. The palm PC of claim 12, wherein the battery powers the printer and a processor of the palm PC.

14. The palm PC of claim 12, including a power port for recharging said battery.

15. The palm PC of claim 1, further including a communications port for receiving data.