Portable electronic computer with tracking device

Claim 2

A portable electronic computer comprising: a base unit; an electronic unit in said base unit; a display screen controlled by said electronic unit; a tracking device connectable to said electronic unit to execute processes visible on said display screen; a receptacle disposed on one side of said base unit and capable of housing said tracking device; connecting means for effective connection of said tracking device to said electronic unit outside said receptacle; a housing in said base unit to house said connecting means when said tracking device is inside said receptacle; a supporting member for said tracking device; and guide means in said base unit to guide horizontally said supporting member for moving said tracking device between an inoperative position inside said receptacle, and an operative position outside said receptacle; wherein said supporting member makes said tracking device to assume a raised position with respect to said guide means when said tracking device is in said operative position.

Claim 3

A portable computer according to claim 1, wherein said tracking device has a sphere which is rotated to execute said processes visible on said display screen.

Claim 4

A portable computer according to claim 1 or 2, wherein said supporting member comprises a flexible sheet fixed at one end to said tracking device, and said guide means interacts with said flexible sheet for moving said tracking device between said inoperative position and said operative position; and wherein said flexible sheet comprises a preformed part with a predetermined curvature which determines said raised position.

Claim 5

A portable computer according to claim 3 including a spring device to facilitate withdrawal of said tracking device from said receptacle, and a locking mechanism capable of retaining said tracking device in said inoperative position against the action of said spring device, wherein said spring device acts on said supporting member to draw and extract said tracking device from said receptacle, positioning said tracking device in said operative position, in response to pressing of a release button when said tracking device is in said inoperative position.

Claim 6

A portable computer according to claim 4, wherein said locking mechanism comprises a catch which is fit to be housed in a void of said base unit for retaining said tracking device in said inoperative position, a spring to keep said catch pressed towards said void, and a release button which is fit to be pressed to control said catch.

Claim 7

A portable computer according to claim 3, wherein said connecting means comprises a cable having a first part connected to said electronic unit, a second part connected to said tracking device and fixed to said flexible sheet, and a moveable intermediate part of variable shape which may be moved to follow said tracking device during its movement from said inoperative position to said operative position and vice versa.

Claim 8

A portable electronic computer comprising: a base unit; an electronic unit in said base unit; a keyboard for entry of data into said electronic unit; a display screen controlled by said electronic unit; a tracking device connectable to said electronic unit to execute processes visible on said display screen, wherein said tracking device is mounted on a supporting member and is movable from an inoperative position inside said base unit under said keyboard to an operative position outside said base unit; guide means to guide said supporting member between said inoperative position and said operative position of said tracking device; elastic withdrawal means to bear on said tracking device and position said tracking device in said operative position; and locking means to retain said tracking device in said inoperative position against the action of said elastic withdrawal means; wherein said elastic withdrawal means may be used to move said tracking device from said inoperative position in which said tracking means is under said keyboard to said operative position in which said tracking means is adjacent to said keyboard; and wherein said supporting member makes said tracking device to assume a raised position adjacent to said keyboard when said tracking device is in said operative position.

Claim 9

A portable electronic computer comprising: a base unit; an electronic unit in said base unit; a keyboard for entry of data into said electronic unit; a display screen controlled by said electronic unit; a tracking device connectable to said electronic unit to execute processes visible on said display screen, wherein said tracking device is mounted on a supporting member and is movable from an inoperative position inside said base unit under said keyboard to an operative position outside said base unit; guide means to guide said supporting member between said inoperative position and said operative position of said tracking device; elastic withdrawal means to bear on said tracking device and position said tracking device in said operative position; and locking means to retain said tracking device in said inoperative position against the action of said elastic withdrawal means; wherein said elastic withdrawal means may be used to move said tracking device from said inoperative position in which said tracking means is under said keyboard to said operative position in which said tracking means is adjacent to said keyboard; and wherein said supporting member makes said tracking device to assume a raised position adjacent to said keyboard when said tracking device is in said operative position.

Claim 10

A portable computer according to claim 7, wherein said supporting member comprises a flexible sheet having a preformed part with a predetermined curvature.

Claim 11

A portable computer according to claim 8, including a damping member capable of interacting with said tracking device when said tracking device is in said operative position to prevent vibrations in said tracking device.

Claim 12

A portable computer according to claim 9, wherein said damping member comprises a textile strip fitted between a fixed member of said base unit and a fixed member of said tracking device.

Claim 13

A portable computer according to claim 8, wherein said locking means comprises an expulsion key connected to a flexible plate positioned on a base of said base unit, below said flexible sheet, and said flexible plate comprises a catch which can be positioned in a slot in said flexible sheet to engage with one edge of said slot and stop movement of said tracking device against action of said elastic withdrawal means.

Claim 14

A portable computer according to claim 8, wherein said tracking device is connected to said electronic unit through a flat multi-core cable in which a section of said flat cable has a self-adhesive surface to be fixed to said flexible sheet.

Claim 15

A portable computer according to claim 8, including a housing formed in a base of said base unit adjacent to said guide means and in which said tracking device is connected to said electronic unit through a conductor, having a movable intermediate part and variable configuration, disposed in said housing.

Claim 16

A portable computer comprising: a base unit; an electronic unit in said base unit; a tracking device; connecting means for effective connection of said tracking device to said electronic unit to execute processes visible on a display screen, wherein said connecting means comprises first and second fixed contacts on said base unit and movable contacts on said tracking device; reference supporting means to support said tracking device on a reference side of said base unit; other supporting means provided to support said tracking device on another side of said base unit opposite to said reference side; and a flat cable with multiple cores in the form of an inverted T, having ends connected to said electronic unit and free ends on arms of said T, forming said first fixed contacts and said second fixed contacts; wherein said first fixed contacts are engaged with said movable contacts when said tracking device is supported by said reference supporting means on said reference side of the base unit and said second fixed contacts are engaged with said movable contacts when said tracking device is supported by said other supporting means on said other side of the base unit.

Claim 17

A portable computer comprising: a base unit; an electronic unit in said base unit; a tracking device; connecting means for effective connection of said tracking device to said electronic unit to execute processes visible on a display screen, wherein said connecting means comprises first and second fixed contacts on said base unit and movable contacts on said tracking device; reference supporting means to support said tracking device on a reference side of said base unit; other supporting means provided to support said tracking device on another side of said base unit opposite to said reference side; and a flat cable with multiple cores in the form of an inverted T, having ends connected to said electronic unit and free ends on arms of said T, forming said first fixed contacts and said second fixed contacts; wherein said first fixed contacts are engaged with said movable contacts when said tracking device is supported by said reference supporting means on said reference side of the base unit and said second fixed contacts are engaged with said movable contacts when said tracking device is supported by said other supporting means on said other side of the base unit.

Claim 18

A portable computer according to claim 14, including a supporting member for said tracking device, wherein said reference supporting means comprises a receptacle disposed on said reference side to accommodate said tracking device, and two guides on a base of said base unit to guide said supporting member between an inoperative position inside said receptacle and an operative position outside said receptacle.

Claim 19

A portable computer according to claim 15, wherein said supporting member comprises a flexible sheet fixed at one end to said tracking device, and said two guides interact slidably with said flexible sheet for moving said tracking device between said inoperative position and said operative position outside said receptacle.

Claim 20

A portable computer according to claim 16, wherein said other supporting means comprises a slot disposed on said other side and two other guides on said base of said base unit to guide said flexible sheet and position said flexible sheet in another operative position outside said slot and opposite said operative position outside said receptacle.

Claim 21

A portable computer according to claim 14, wherein said tracking device can selectively perform processes visible on said display screen by means of up or down, right or left commands according to predetermined vertical and horizontal coordinates both when said tracking device is positioned on said reference side and when said tracking device is positioned on said other side.