US6029072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable telephone with terminal mode facility
Assignee: Canon Inc
•
Filing: 1997-01-24
•
Granted: 2000-02-22
•
Expires: 2017-01-24
Abstract
Abstract A portable cellphone, with or without its docking system, is integrated as an accessory to a host system such as by providing a terminal interface (terminal mode) to the host for the purpose of user interface and control of the host. The portable also provides radio frequency (RF) communication capability which is integrated and controlled by the application running on the host. While functioning in a terminal mode of operation, the portable generates and communicates to the host, through the reverse data line, data representing manipulation of the portable keypad. Likewise, the portable relinquishes control of the portable display to the host according to display control commands received by the portable from the host on the forward data line. A user is also provided the ability to use the portable to notify the host through the reverse data line that the portable is available for use in terminal mode.
Inventors
- 👤 Clifton J. Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:36
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/60; H04M1/6033; H04M1/6041; H04M1/6075; H04M1/6083; G; G01; G01C; G01C21/00; G01C21/26; H04B; H04B1/00; H04B1/38; H04B1/3827; H04B1/3833; H04B1/3877; H04M11/00; H04M11/06; H04M11/066; H04W; H04W88/00; H04W88/02; H04M1/57; H04M1/72; H04M1/724; H04M9/00; H04M9/08
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
221 words
A portable cellular telephone method for controlling initiation and termination of a terminal mode of operation in a portable cellular telephone coupled to a host device, during which mode the host device receives keystroke information from the portable cellular telephone and sends display commands to the portable cellular telephone, said method comprising steps of: monitoring a portable cellular telephone keypad to detect an indication from a user to request both initiation of terminal mode operation of the portable cellular telephone and suspension of normal portable cellular telephone display and keyboard input operations; responsive to detecting the indication, sending out data to the host device notifying the host device that the user has requested access to a host application via the terminal mode of operation; resuming normal portable cellular telephone operation subsequent to the preceding step of sending out data to the host device; initiating the terminal mode of operation in the portable cellular telephone exclusively responsive to receiving a command from the host device to initiate the terminal mode of operation; and terminating the terminal mode of operation in the portable cellular telephone during any stage of the terminal mode of operation responsive to either the portable cellular telephone detecting an incoming cellular telephone call or the portable receiving a command from the host to terminate the terminal mode of operation.
Claim 2
Dependent Claim
221 words
A portable cellular telephone method for controlling initiation and termination of a terminal mode of operation in a portable cellular telephone coupled to a host device, during which mode the host device receives keystroke information from the portable cellular telephone and sends display commands to the portable cellular telephone, said method comprising steps of: monitoring a portable cellular telephone keypad to detect an indication from a user to request both initiation of terminal mode operation of the portable cellular telephone and suspension of normal portable cellular telephone display and keyboard input operations; responsive to detecting the indication, sending out data to the host device notifying the host device that the user has requested access to a host application via the terminal mode of operation; resuming normal portable cellular telephone operation subsequent to the preceding step of sending out data to the host device; initiating the terminal mode of operation in the portable cellular telephone exclusively responsive to receiving a command from the host device to initiate the terminal mode of operation; and terminating the terminal mode of operation in the portable cellular telephone during any stage of the terminal mode of operation responsive to either the portable cellular telephone detecting an incoming cellular telephone call or the portable receiving a command from the host to terminate the terminal mode of operation.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein the host device includes a mobile navigational system.
Claim 4
Dependent Claim
26 words
The method of claim 1, wherein keystrokes detected on the portable cellular telephone keypad during the terminal mode of operation are forwarded to the host device.
Claim 5
Dependent Claim
37 words
The method of claim 3, wherein all of the keystrokes detected on the portable cellular telephone keypad during the terminal mode of operation are forwarded to the host device without affecting operation of the portable cellular telephone.
Claim 6
Dependent Claim
22 words
The method of claim 3, wherein keystrokes forwarded to the host device have no effect on operation of the portable cellular telephone.
Claim 7
Dependent Claim
32 words
The method of claim 1, wherein the portable cellular telephone continues processing keystroke commands received from external control units during the terminal mode of operation without displaying the results of such processing.
Claim 8
Dependent Claim
26 words
The method of claim 1, wherein the portable cellular telephone provides a radio frequency communication capability to the host device during the terminal mode of operation.
Claim 9
Dependent Claim
98 words
A portable cellular telephone operable alternately as a conventional cellular telephone and as a terminal for providing a user interface to a host device, said portable cellular telephone comprising: means for changing from a conventional cellular mode of operation to a terminal mode of operation responsive to receiving a terminal mode initiation command from a host device; means for forwarding keystroke data from said portable cellular telephone to the host device during the terminal mode of operation; and means for displaying on said portable cellular telephone information received from the host device during the terminal mode of operation.
Claim 10
Dependent Claim
98 words
A portable cellular telephone operable alternately as a conventional cellular telephone and as a terminal for providing a user interface to a host device, said portable cellular telephone comprising: means for changing from a conventional cellular mode of operation to a terminal mode of operation responsive to receiving a terminal mode initiation command from a host device; means for forwarding keystroke data from said portable cellular telephone to the host device during the terminal mode of operation; and means for displaying on said portable cellular telephone information received from the host device during the terminal mode of operation.
Claim 11
Dependent Claim
49 words
The telephone of claim 8, further comprising means for communicating to the host device a request for host mode initiation, and means for delaying host mode initiation until receiving the terminal mode initiation command from the host device, during which time the conventional cellular mode of operation is maintained.
Claim 12
Dependent Claim
27 words
The telephone of claim 8, further comprising means for terminating the terminal mode of operation responsive to said portable cellular telephone receiving an incoming cellular telephone call.
Claim 13
Dependent Claim
36 words
The telephone of claim 8, wherein all of the keystrokes detected on the portable cellular telephone during the terminal mode of operation are forwarded to the host device without affecting operation of the portable cellular telephone.
Claim 14
Dependent Claim
22 words
The telephone of claim 8, wherein keystrokes forwarded to the host device have no effect on operation of the portable cellular telephone.
Claim 15
Dependent Claim
32 words
The telephone of claim 8, wherein the portable cellular telephone continues processing keystroke commands received from external control units during the terminal mode of operation without displaying the results of such processing.
Claim 16
Dependent Claim
26 words
The telephone of claim 8, wherein the portable cellular telephone provides a radio frequency communication capability to the host device during the terminal mode of operation.
References Cited (Backward Citations)
US4065640A
Cited
US4394649A
Cited
US4775997A
Cited
US4680787A
Cited
US4850006A
Cited
US4852146A
Cited
US4989230A
Cited
US5081667A
Cited
US5128981A
Cited
US5109402A
Cited
US5322991A
Cited
US5020090A
Cited
US5109541A
Cited
US5043736A
Cited
US5043736B1
Cited
US5247564A
Cited
US5451839A
Cited
US5479475A
Cited
US5487175A
Cited
US5590406A
Cited
US5479480A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-21 | 2003-08-23 | 2004-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-21 | 2007-08-23 | 2008-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-21 | 2011-08-23 | 2012-02-22 | $7700.00 | Window Closed / Lapsed |