Portable computer with internal ethernet/token ring controller

• US 5,859,970 A
• Filed: 08/27/1996
• Issued: 01/12/1999
• Est. Priority Date: 08/27/1996
• Status: Expired due to Term

• Current Assignee: Symbol Technologies, LLC (Zebra Technologies Corporation)
• Original Assignee: Telxon Corporation (Zebra Technologies Corporation)
• Inventors: Pleso, Mark F.
• Primary Examiner(s): Asta, Frank J.
• Assistant Examiner(s): PIERCE, IVAN
• Application Number:
  US08/703,739
• Time in Patent Office: 868 Days
• Field of Search: 395/200.8, 395/575, 395/500, 395/200.5, 395/200.54, 395/200.58, 395/200.6, 395/200.83, 455/403, 455/422, 370/338, 370/340, 370/401
• US Class Current: 709/250
• CPC Class Codes: G06F 1/1632 External expansion units, e.g. docking stations
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

A portable electronic device including a portable housing; electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone including at least one of an Ethernet backbone and a Token Ring backbone; and an internal area network (LAN) controller within the housing for serving as an interface between the electronic circuitry and the system backbone.

Claims

1. A portable electronic device, comprising:

a portable housing;

electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone;

an internal area network (LAN) controller within the housing for serving as an interface between the electronic circuitry and the system backbone when the device is electrically connected to the system backbone; and

a wireless transceiver serving as an interface between the electronic circuitry and the system backbone when the device is not electrical connected to the backbone.

2. The device of claim 1, wherein the housing includes an externally accessible electrical connector for providing an electrical connection between the LAN controller and the system backbone.

3. The device of claim 2, wherein the electrical connector is configured to provide an electrical connection with a corresponding electrical connector coupled to the system backbone.

4. The device of claim 3, wherein the corresponding electrical connector is included in a docking station designed to receive the device.

5. The device of claim 1, wherein the LAN controller is switchable between an active mode and a low-power consumption sleep mode.

6. The device of claim 5, wherein the LAN controller is automatically placed in the active mode in association with being electrically connected to the system backbone, and is automatically placed in the sleep mode in association with not being electrically connected to the system backbone.

7. The device of claim 5, further comprising a power detection circuit for detecting when external power is provided to the device, and based on such detecting causing the LAN controller to be placed automatically in the active mode in the event external power is provided and causing the LAN controller to be placed automatically in the sleep mode in the event external power is not provided.

8. The device of claim 7, further comprising at least one externally accessible electrical connector for providing an electrical connection between the LAN controller and the system, and for providing an electrical connection between an external power source and the electronic circuitry.

9. The device of claim 8, wherein the at least one electrical connector is configured to provide an electrical connection with a corresponding at least one electrical connector included in a docking station designed to receive the device, the docking station including a connection between the corresponding at least one electrical connector, the system backbone, and the power source which is included in the docking station.

10. The device of claim 1, wherein the device is a portable computer.

11. The device of claim 1, wherein the device is a mobile terminal.

12. A method of using a portable electronic device which includes a portable housing;

electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone;

an internal area network (LAN) controller within the housing for serving as an interface between the electronic circuitry and the system backbone when the device is electrically connected to the system backbone; and

an RF transceiver for serving as an interface between the electronic circuitry and the system backbone when the device is not electrically connected to backbone, the method comprising the steps of;

determining whether the device is electrically connected to the system backbone;

placing the LAN controller in an active mode in the event the device is electrically connected to the system backbone; and

placing the LAN controller in a low-power consumption sleep mode in the event the device is not electrically connected to the system backbone.

13. The method of claim 12, wherein the determining step includes the step of detecting whether external power is applied to the device, the external power being associated with provision of an electrical connection of the LAN controller to the system backbone.

14. The method of claim 13, wherein the external power and the electrical connection are provided via a docking station configured to receive the device.

15. The method of claim 12, wherein the device is a portable computer.

16. The device of claim 12, wherein the device is a mobile terminal.

17. A method of using a portable electronic device which includes a portable housing;

electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone; and

an internal area network (LAN) controller within the housing for serving as an interface between the electronic circuitry and the system backbone, the method comprising the steps of;

wirelessly exchanging information between the electronic circuitry and the system backbone when the device is not electrically coupled to the backbone; and

exchanging communications between the electronic circuitry and the system backbone via the LAN controller when the device is electrically coupled to the backbone.

18. The method of claim 17, wherein a media access layer (MAC) address of the LAN controller is provided by an EEPROM.

19. A portable electronic device, comprising:

a portable housing;

electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone;

wherein the electronic circuitry includes a local area network (LAN) controller for serving as an interface between the electronic circuitry and the system backbone when the device is electrically coupled to the system backbone and an RF transceiver for serving as an interface between the electronic circuitry and the system backbone when the device is not electrically coupled to the backbone.

20. A portable electronic device, comprising:

a portable housing;

electronic circuitry within the housing, the electronic circuitry being operable to perform functions independent of and in combination with a system backbone; and

a local area network (LAN) controller integrally coupled to said electronic circuitry for serving as an interface between the electronic circuitry and the system backbone when the device is electrically coupled to the system backbone and an RF transceiver for serving as an interface between the electronic circuitry and the system backbone when the device is not electrically coupled to the backbone.