System and method for dual path terminal connection

• US 7,386,324 B2
• Filed: 09/20/2002
• Issued: 06/10/2008
• Est. Priority Date: 04/17/2002
• Status: Active Grant

• Current Assignee: Lenovo PC International Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Moriyama, Takao, Kawase, Kei
• Primary Examiner(s): Eng; George
• Assistant Examiner(s): Torres; Marcos L
• Application Number:
  US10/247,950
• Publication Number:
  US 20040198430A1
• Time in Patent Office: 2,090 Days
• Field of Search: 4555561-5562, 455/566, 455/90.3, 455/411, 455/445, 455/553.1, 709/228, 709/227, 709238-242, 345/156, 345/169, 370/229, 370/233, 370/232
• US Class Current: 455/556.2
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units
• CPC Class Codes: G06F 3/1415 with means for detecting differences between the image stored in the host and the images displayed on the displays
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G09G 2310/04 Partial updating of the display screen
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 2370/045 using multiple communication channels, e.g. parallel and serial

Abstract

For communication between a display device and a processing apparatus (host), two connection modes are prepared, a wired connection mode, for communication along a wired connection path, and a wireless connection mode, for communication along a wireless connection path. Before entering the wireless connection mode, the processing apparatus (host) transmits, along the wired connection path to the display device, data required for the wireless connection of the display device 50 along the wireless connection path, and data required for authentication to permit information to be accessed using the wireless connection path.

Claims

1. A system comprising:

a terminal;

a memory; and

a processing apparatus in communication with said memory, the processing apparatus further in communication with said terminal through a wired connection path and a wireless connection path;

wherein said processing apparatus is configured to communicate with said terminal through the wireless connection path by one of a first wireless mode and a second wireless mode, the second wireless mode has a lower data rate than the first wireless mode,

and the processing apparatus is configured to monitor a data size along the wired communication path from the memory to the processing apparatus for a pre-set period of time, and, after lapse of the pre-set period of time, the processing apparatus determines a value of change in the data size along the communication path for the pre-set period of time and dynamically selects the one of the first and second wireless modes based on the value of change in data size along the wired communication path, wherein the processing apparatus is configured to monitor the data size, determine the value of change, and dynamically select the wireless mode based on the value of change for a plurality of pre-set periods of time.

2. The system according to claim 1, wherein the processing apparatus further comprises a transmitter configured to use the wired communication path to transmit authentication data required for communication with said terminal along the wireless connection path, said authentication data required to permit data access by the terminal along said wireless connection path.

3. The system according to claim 2, further comprising:

a detachment means for detaching the terminal from the wired communication path;

a detector for detecting attachment of said terminal to said detachment means; and

a processing apparatus switch configured to select at least one of the wired connection path and the wireless connection path for communicating with said terminal in response to the detector.

4. The system according to claim 3, wherein the wireless path and the terminal are configured to conform with at least one of a local area network Institute of Electrical and Electronics Engineers 802.11 standard, a Transmission Control Protocol/Internet Protocol standard and a Bluetooth standard.

5. The system according to claim 4, wherein the authentication data is selected from the group comprising Extended Service Set Identity, Wired Equivalent Privacy, Internet Protocol address, gateway address, netmask and Dynamic Host Configuration Protocol data.