Combination laptop and pad computer
A portable lightweight combination laptop and pad computer has a display mounted on a main housing for movement between a closed position and an open position. In the closed position, a keyboard is covered by the undersurface of the display and the display viewing surface remains visible so that the computer may be used in the pad mode with a conductive stylus for data and command entry. In the open position, the keyboard is exposed so that the computer may be used in a laptop or desk top mode, or in a combined mode including the pad mode. The display is mounted to the housing by a four bar hinge mechanism, and a pair of latches are provided approximately mid-way between the front and rear portions of the housing along the side margins to securely latch the display in the closed position for storage, transit or use in the pad mode. A removable power pack, which attaches to the rear of the housing, carries battery power and a charging circuit for supplying power to the computer elements contained within the housing.
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This is a continuation of U.S. patent application Ser. No. 08/520,629, filed on Aug. 29, 1995, now U.S. Pat. No. 6,219,681, which is a continuation of U.S. patent application Ser. No. 08/215,988, filed on Mar. 22, 1994, now abandoned, which is a continuation of U.S. patent application Ser. No. 08/025,900, filed Mar. 3, 1993, now U.S. Pat. Ser. No. 5,333,116, issued Jul. 26, 1994, which is a continuation of U.S. patent application Ser. No. 07/932,515, now abandoned, filed Aug. 20, 1992, which is a continuation of U.S. patent application Ser. No. 07/839,004, filed Feb. 14, 1992, now U.S. Pat. No. 5,200,913, issued Apr. 6, 1993, which is a continuation of U.S. patent application Ser. No. 07/519,031, filed May 4, 1990, now abandoned, which are incorporated by reference herein.
BACKGROUND OF THE INVENTION1. Field of the Invention
This invention relates to the field of personal computers and, more particularly, to the field of portable computers, sometimes termed “laptop” computers.
2. Description of the Related Art
Truly portable computers are known which are relatively small, light in weight and convenient to carry and use in transit. Such computers are small enough to be comfortably placed on one'lap, hence the term “laptop” computer. Computers of this type are usually provided with a down-sized version of a standard personal computer keyboard, a display, a portable power supply (e.g., rechargeable batteries) and various interface connections for enabling the computer to be elecrically coupled to other devices, such as input/output devices (disk drives, printers, and the like) and communication links (e.g., telephone lines). The display is typically pivotally mounted to the computer housing at a point intermediate the front and rear margins so as to be maneuverable between a closed position in which the viewing surface of the display covers the keyboard and acts as a shield, and an opened position in which the keyboard is exposed and the viewing surface of the display is arranged at a viewing angle. A representative portable computer having the above components and configuration is disclosed in U.S. Pat. No. 4,571,456 issued Feb. 18, 1986, for Portable Computer, the disclosure of which is hereby incorporated by reference.
A relatively new type of portable computer introduced by the Assignee of this application is smaller and lighter than a typical laptop computer and features a display operable by a conductive pointed stylus which is employed by at user in much the same manner as a pen or pencil on a pad: hence the term “pad computer.” This pad computer is meant to be employed like a pen and tablet in the field, and is devoid of any keyboard. The pad computer is, however, provided with a connector for enabling an auxiliary keyboard to be connected to the pad computer in order to add keyboard capability to the pad computer. However, the major mode of use envisioned in the pad computer encompasses the use of the stylus to permit hand entry of information into the computer via the display.
SUMMARY OF THE INVENTIONThe invention comprises a portable computer which combines the standard keyboard capability of a laptop computer with the stylus data entry capability of a pad computer, but which is substantially the same size and weight as the pad computer.
The invention comprises a portable computer having a housing, a keyboard carried by the housing, and display means having a viewing surface and an opposing surface, the display means being coupled to the housing and moveable between a closed position in which the opposing surface of the display means covers the keyboard and an opened position in which the keyboard is uncovered and the display means is positioned rearwardly of the keyboard with the viewing surface arranged at a convenient viewing angle. In the closed position, the invention can be used as a pad computer by entering information via a stylus applied directly to the display, while in the open position the portable computer can be used as either a standard laptop computer using the exposed keyboard for information entry or as a combination laptop and pad computer. In order to facilitate use of the computer in the laptop mode when the display means is positioned with the keyboard exposed, a stylus receptacle is provided in a mask region adjacent the viewing region of the display means, so that the stylus can be removably held in the receptacle.
To facilitate storage and transit of the portable computer, a latching means is provided for removably securing the display means to the housing. The latching means is located approximately mid-way between a front portion and a rear portion of the computer housing. Preferably, the latching means comprises a pair of retractable latch members and corresponding slotted walls, with each latch member/slotted wall pair being located adjacent a different one of the opposing side margins of the computer housing. In the preferred embodiment, each latch member is retractably carried by the display means, and each slotted wall comprises a portion of the computer housing.
The display means is pivotally mounted to the computer housing by means of a four bar hinge mechanism which includes first and second forward hinge members and a rear hinge means. The forward hinge members pivotally couple the display means to the housing at hinge points positioned adjacent opposed housing side margins extending between the front and rear of the housing. Each of the first and second forward hinge members are preferably coupled to the associated side of the display means adjacent a forward comer thereof; and the first and second forward hinge members are also each coupled to the housing side margins at a pivot point conveniently located between the front portion of the housing and the rear edge of the keyboard. Each side margin of the housing is provided with a slotted wall for receiving the corresponding one of the hinge members. The opposing surface of the display means is hinged to the housing by means of the rear hinge means which is coupled at the top edge thereof to the opposing surface of the display means and which is also coupled at the bottom edge thereof to the housing at a position rearwardly of the keyboard.
The housing is further provided with a rear wall portion with a recess formed therein for removably accommodating a power pack having a shape conformable with the recess. The power pack includes a receptacle area for accommodating a battery power source, and also a battery charging circuit so that the batteries may be recharged with the power pack attached to the computer housing.
An auxiliary stylus mounting mechanism is provided along the rear top margin of the housing for removably attaching the stylus to the computer when the display means is in the closed position or the stylus is not needed.
The invention provides a light weight portable computer which is capable of functioning in either a laptop mode, a pad mode or a combination of the two. In addition, the mounting mechanism for the display conveniently enables the display to cover the keyboard when use of the keyboard is not required, and to quickly uncover the keyboard and arrange the display at a convenient viewing angle when the computer is to be used on a desk top or other support surface.
For a fuller understanding of the nature and advantages of the invention, reference should be had to the ensuing detailed description taken in conjunction with the accompanying drawings.
Turning now the drawings,
A display generally designated with reference numeral 20 is pivotally mounted to the housing 10 in such a manner that the viewing surface 21 of the display 20 is exposed in both the closed position illustrated in FIG. 1 and the open position illustrated in FIG. 2. Display 20 uses an LCD display with a transparent conductive screen overlay of the type disclosed in commonly assigned co-pending U.S. patent application Ser. No. 07/365,147, filed Jun. 12, 1989, now U.S. Pat. No. 5,133,076, for Hand Held Computer, the disclosure of which is hereby incorporated by reference. Generally, the display 21 is charged with a voltage gradient which alternates along the X and Y axes of the display as described in U.S. Pat. No. 4,371,746, the disclosure of which is hereby incorporated by reference. The display may be used either for conventional display purposes (i.e., for displaying information entered via keyboard 15, computational results and user prompts or other information), or as an interactive data entry display tablet or pad. In this latter mode of operation (termed the “pad” mode), a conductive stylus 30 is employed much like a pen or pencil by the user. When the tip of the stylus touches the conductive screen overlay of the display 20, the stylus transmits the magnitude of the voltage of the overlay al: that point to an overlay controller within the computer by means of a conductive lead 31 which plugs into a jack 32 located in the rear of the housing. A representative stylus 30 is disclosed in commonly assigned U.S. Pat. No. 4,927,986, issued May 22, 1990 for Conductive Stylus Storage for a Portable Computer, the disclosure of which is hereby incorporated by reference. As shown in
The display 20 is pivotally mounted to the housing 10 by means of a pair of forward hinges 40 and a rear hinge plate 41 forming a four bar hinge mechanism. As best shown in
With reference to
To facilitate storage, transport and use of the computer in the pad mode, a pair of latch mechanisms generally designated with reference numeral 50 are provided at approximately the mid-point of the side margins of display 20. As best seen in
With reference to
Also secured within the rear portion of housing 10 is a modem unit 81 having a pair of telephone type connector sockets 82, 83 which are accessible through suitably shaped apertures in the side wall of housing 10. In addition, a display backlight inverter circuit 84 is positioned within housing 10 adjacent the main logic board 71. A pair of stylus jacks 32 are mounted to the housing along the rear portion of the left and right margins 13, 14 and are used to electrically couple the conductive stylus 30 to the circuitry on the main logic board 71. An auxiliary keyboard jack 85, and a serial port connector 86 are mounted in the housing along the rear wall 12.
Housing 10 is provided with a power pack recess 90 along the rear wall as shown in
In order to provide adequate space for the hardware components, the bottom wall 17 of housing 10 curves outwardly starting at approximately the mid-point thereof (just rearwardly of the keyboard 15). This curved portion 18 also provides an inclined angle to the plane of the housing 10 when the computer is placed on a desk top or other flat working surface to more closely approximate the feel of a conventional laptop computer or desk top personal computer. This inclined angle also facilitates use of the computer in the pad mode.
The entire computer has overall dimensions of a width of 11.5 in., a housing depth of 8.85 in., and a maximum thickness measured at the rear of 1.40 in. The display has a depth of 8.15 in., a thickness of 0.45 in at the rear half and 0.62 in. at the front half. The thickness of the housing 10 in the front region (the region where the keyboard 15 is located) is 0.39 in. Total weight of the computer is approximately four lbs.
As will now be apparent, the invention can be used as either a pad computer in combination with the stylus 30, or as a laptop computer by using the keyboard 15, or as a combination of both. When used as a pad computer, the stylus 30 is plugged into either one of the two jacks 32, the display 20 is normally in the closed position illustrated in
While the above provides a full and complete disclosure of the preferred embodiment of the invention, various modifications, alternate constructions and equivalents will occur to those skilled in the art. For example, other hinge combinations can be used than those illustrated in the preferred embodiment, and different dimensions may be employed for the various portions of the housing. In addition, other stylus compatible displays may be employed; and other types of stylus devices, such as a cordless stylus, may be used as desired. Further, the locations of the additional stylus receptacles 25, 26, as well as the shape thereof, may be different from those illustrated. Moreover, different means for removably attaching the stylus to a convenient location for the user may be selected, as desired for any given application. Also, the particular latch configuration shown may be changed, as desired, to comply with the specific requirements of a particular application. Therefore, the above descriptions and illustrations should not be construed as limiting the invention which is defined by the appended claims.
Claims
1. A portable computer comprising:
- a computer housing;
- a keyboard carried by said computer housing;
- a display device having an obverse viewing surface and a reverse surface; and
- a mounting assembly that couples said display device to said computer housing, said mounting assembly including an integral, single-piece, member extending between said display device and said computer housing, said integral, single-piece, member having a first end portion connected to said computer housing in a substantially non-slidable manner and a second end portion connected to said display device, said display device being adjustable between a closed position in which the display device covers the keyboard with said reverse surface with the obverse viewing surface exposed and an open position in which the keyboard is uncovered and the display device is positioned rearwardly of the keyboard at a viewing angle with the obverse viewing surface positioned toward the keyboard.
2. The portable computer as defined in claim 1, further including a latch assembly for latching said display device to said computer housing.
3. The portable computer as defined in claim 2, wherein said computer housing has a front portion and a rear portion, and wherein said latch assembly is located approximately midway between said front portion and said rear portion.
4. The portable computer as defined in claim 3, wherein said computer housing has first and second side margins extending between said front portion and said rear portion, and wherein said latch assembly is located adjacent at least one of said first and second side margins.
5. The portable computer as defined in claim 4, wherein said latch assembly includes a retractable latch member and a slotted wall for retractably receiving said latch member.
6. The portable computer as defined in claim 5, wherein said latch member is carried by said display device and wherein said slotted wall is a portion of said computer housing.
7. The portable computer as defined in claim 4, wherein said latch assembly includes first and second retractable latch members and corresponding first and second slotted walls, said first latch member and said first side wall being located adjacent said first side margin, and said second latch member and said second side wall being located adjacent said second side margin.
8. The portable computer as defined in claim 1, wherein said computer housing has a front portion, a rear portion and first and second side margins extending therebetween, and wherein said portable computer further includes a mounting means for pivotally mounting said display device to said computer housing.
9. The portable computer as defined in claim 1, wherein said computer housing has a rear wall portion with a recess formed therein, and wherein said computer includes a power pack having a shape conformable with said recess for enabling removable attachment of said power pack to said computer housing.
10. The portable computer as defined in claim 9, wherein said power pack includes a receptacle area for accommodating a battery power source.
11. The portable computer as defined in claim 9, wherein said power pack includes a battery charging circuit.
12. The portable computer as defined in claim 1, wherein said display device includes a display operable in conjunction with a stylus.
13. The portable computer as defined in claim 12, wherein said stylus is electrically conductive.
14. The portable computer as defined in claim 12, wherein said display device further includes a mask region adjacent said viewing surface and a receptacle formed in said mask region to receive and hold said stylus.
15. The portable computer as defined in claim 1, wherein said computer housing includes means for mounting a stylus thereto.
16. The portable computer as defined in claim 1, wherein said computer housing includes support means for inclining said computer housing at an angle when said portable computer is placed on a support surface.
17. The portable computer as defined in claim 16, wherein said support means is integrally formed in the bottom wall of said computer housing.
18. The portable computer as defined in claim 1, wherein said display device is sized to cover substantially all of said computer housing when said display device is in the closed position.
19. The portable computer as defined in claim 1, further comprising clip means for removably securing a conductive stylus to at least one of the computer housing and the display device.
20. A portable computer comprising:
- a main housing comprising a top surface supporting an input until through which data is input into the portable computer and a bottom surface opposite the top surface;
- a display housing having a front surface supporting thereon a display surface and a back surface opposite the front surface; and
- at least one linking member configured to allow a movement of the main housing and the display housing relative to each other at least between a first position and a second position, said linking member having a first end pivotally coupled to a first fixed location of the main housing and a second end pivotally coupled to a second fixed location of the display housing,
- wherein: in the first position, the back surface is substantially parallel to and faces the top surface such that the input unit is covered by the back surface, in the second position, the front surface is disposed at a viewing angle with respect to the top surface such that the input unit is uncovered, and the display surface comprises an input surface through which data is input into the portable computer.
21. The portable computer according to claim 20, wherein:
- the main housing further comprises a front end and a back end separated by the top surface, and a distance between the front end and the first fixed location is constant as the display housing moves between the first position and the second position.
22. The portable computer according to claim 21, wherein:
- the data is input through contact between the input surface and a stylus pen.
23. The portable computer according to claim 22, further comprising a holder shaped to receive and hold the stylus pen, the holder being on at least one of the front surface and the top surface.
24. The portable computer according to claim 20, wherein:
- when pivoting between the first and second positions, the second end of the at least one linking member pivots about the first end of the at least one linking member, and
- when in the first and second positions, the first end is pivotally attached to the first fixed location.
25. The portable computer according to claim 20, wherein:
- the second end of the at least one linking member is configured to pivot while the display housing is disposed rearward of the input unit.
26. The portable computer according to claim 20, wherein:
- when in the first position, the second end of the at least one linking member is disposed forward of the first end of the at least one linking member.
27. The portable computer according to claim 20, wherein:
- one of the first end and the second end is disposed substantially at a middle of a corresponding one of the computer housing and the display housing, and
- the other one of the first end and the second end is disposed substantially at an end of the other corresponding one of the computer housing and the display housing.
28. The portable computer of claim 20, wherein the main housing further comprises:
- a receptacle shaped to receive and detachably hold a power pack.
29. The portable computer of claim 28, wherein:
- the receptacle comprises a recess extending along a rear wall of said main housing.
30. A portable computer comprising:
- a main housing including a top surface having an input unit through which data is input into the portable computer, a front edge, and a rear edge separated from the front edge by the top surface;
- a display housing including an upper edge, a lower edge, a front surface having disposed thereon a display screen, the front surface being disposed between the upper edge and the lower edge; and
- a linking member configured to move the display housing relative to the main housing between at least a first position and a second position, the linking member having a first end pivotally coupled to the main housing at a first fixed distance away from the front edge and a second end pivotally coupled to the display housing at a second fixed distance away from the upper edge when in the first and second positions,
- wherein: when in the first position, the frond edge of the main housing is a first distance apart from the upper edge of the display housing and a second distance apart from the lower edge of the display housing, and when in the second position, the front edge of the main housing being a third distance apart from the upper edge of the display housing and a fourth distance apart from the lower edge of the display housing, the first distance being other than the third distance, the second distance being other than fourth distance, and the display screen further comprises an input surface through which data is input into the portable computer.
31. The portable computer according to claim 30, wherein:
- when in the first position, the front edge of the main housing substantially coincides with at least one of the upper edge and the lower edge of the display housing.
32. The portable computer of claim 31, wherein the main housing further comprises:
- a receptacle shaped to receive and detachably hold a power pack.
33. The portable computer of claim 32, wherein:
- the receptacle comprises a recess extending along a rear wall of said main housing.
34. The portable computer according to claim 30, wherein:
- when in the second position, the lower edge of the display housing is positioned between the front edge and the rear edge of the main housing.
35. The portable computer according to claim 30, wherein:
- the first fixed distance is other than the second fixed distance.
36. The portable computer according to claim 35, wherein:
- the second fixed distance is greater than the first fixed distance.
37. The portable computer according to claim 30, wherein:
- the first end of the linking member is positioned rearward of a front edge of the input unit.
38. The portable computer according to claim 30, wherein:
- the data is input through contact between the input surface and a stylus pen.
39. The portable computer according to claim 38, further comprising:
- a holder shaped to receive and hold the stylus pen, the holder being on at least one of the front surface and the top surface.
40. A portable computer comprising:
- a computer housing having an attachment point at a first location and a first surface;
- a display device having an obverse viewing surface and a reverse surface;
- a mounting member that extends between the display device and the computer housing, the mounting member having a first end portion connected to the attachment point at the first location and a second end portion connected to the display device so as to allow the display device to be adjusted between at least a first position and a second position relative to the computer housing; and
- an input unit disposed on the first surface and through which data is input into the portable computer, wherein the display device covers the input unit when in the second position and exposes the input unit when the display device is in the first position,
- wherein: the first end portion remains substantially at the first location when the display device moves between the first position and the second position, the obverse viewing surface of the display device is exposed when the display device is at the first position and the second position, the first position comprises the first surface of the computer housing being exposed with the obverse viewing surface positioned at a viewing angle with respect to the first surface, the second position comprises the reverse surface of the display device covering the first surface of the computer housing, and the display device further comprises an input surface through which data is input into the portable computer.
41. The portable computer of claim 40, wherein the computer housing further comprises:
- a receptacle shaped to receive and detachably hold a power pack.
42. The portable computer of claim 41, wherein:
- the receptacle comprises a recess extending along a rear wall of said computer housing.
43. A method of adjusting a display device relative to a computer housing of a portable computer, the display device having a display surface, and the computer housing having a top surface, the method comprising:
- rotating a first fixed point of the display device about a second fixed point of the computer housing to adjust a location of the display device relative to said computer housing; and
- pivoting the display device about the first fixed point to adjust a relative angle between the display surface of the display device and the top surface of the computer housing, such that the display device is moved between at least a first position, in which the display surface is at a viewing angle with respect to the top surface, and a second position, in which the display device covers the top surface while the display surface is exposed.
44. A portable computer comprising:
- a main housing comprising a top surface supporting an input unit through which data is input into the portable computer and a bottom surface opposite the top surface;
- a display housing having a display surface and a back surface opposite the front surface; and
- at least one linking member having a first end pivotally coupled to a first fixed location of the display housing and a second end pivotally coupled to a second fixed location of the main housing such that the display housing pivots relative to the at least one linking member about a first axis at the first fixed location while the first fixed location of the display housing rotates about a second axis at the second fixed location so that the display housing moves relative to the main housing at least between a first position, in which the display surface is at a viewing angle with respect to the top surface, and a second position, in which the back surface of the display housing opposes and covers the top surface while the display surface is exposed.
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Type: Grant
Filed: Apr 2, 2004
Date of Patent: Dec 12, 2006
Assignee: Samsung Electronics Co., Ltd. (Suwon-si)
Inventors: Jeff C. Hawkins (Atherton, CA), John J. Daly (Irvine, CA)
Primary Examiner: D. H. Malzahn
Attorney: Staas & Halsey LLP
Application Number: 10/816,597
International Classification: G06F 1/16 (20060101);