US5778205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data communication system and portable data processing terminal used therein
Assignee: Casio Computer Co Ltd
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Filing: 1996-04-25
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Granted: 1998-07-07
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Expires: 2016-04-25
Abstract
Abstract A data communication system comprises a portable data processing terminal, such as an electronic notebook, and an external data processing apparatus, such as a personal computer. When the electronic notebook is connected to an RS232C I/F box connected to the personal computer, an I/F switch provided in the electronic notebook is switched on to supply a connection signal to an RS232C I/F circuit in the electronic notebook. An interruption signal is supplied from the RS232C I/F circuit to a CPU of the electronic notebook so that a communication program previously stored in a ROM is activated and a communication request is sent to the personal computer. The personal computer responds to the communication request sent from the electronic notebook and returns a response signal so that a data communication process is performed.
Inventors
- 👤 Takashi Orimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:13
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/42; G06F13/4282; G06F13/4286; Y; Y02; Y02D; Y02D10/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
138 words
A data communication system for communicating data between a portable data processing terminal and a data processing apparatus, the system comprising: an interface unit connected to said data processing apparatus; means, provided in said portable data processing terminal, for detecting a connection between said portable data processing terminal and said interface unit; mode setting means, provided in said portable data processing terminal, for setting said portable data processing terminal to a communication mode; means, provided in said portable data processing terminal, for outputting a communication request to said data processing apparatus until said data processing apparatus responds to the communication request after said mode setting means sets the communication mode; and means, provided in said data processing apparatus, for executing data communication with said portable data processing terminal via said interface unit in response to the communication request.
Claim 2
Dependent Claim
138 words
A data communication system for communicating data between a portable data processing terminal and a data processing apparatus, the system comprising: an interface unit connected to said data processing apparatus; means, provided in said portable data processing terminal, for detecting a connection between said portable data processing terminal and said interface unit; mode setting means, provided in said portable data processing terminal, for setting said portable data processing terminal to a communication mode; means, provided in said portable data processing terminal, for outputting a communication request to said data processing apparatus until said data processing apparatus responds to the communication request after said mode setting means sets the communication mode; and means, provided in said data processing apparatus, for executing data communication with said portable data processing terminal via said interface unit in response to the communication request.
Claim 3
Dependent Claim
34 words
The system according to claim 1, wherein said portable data processing terminal comprises means for resetting the communication mode of said portable data processing terminal when said connection detecting means stops detecting the connection.
Claim 4
Dependent Claim
47 words
The system according to claim 1, wherein said communication request outputting means outputs a next communication request to said data processing apparatus if data communication is not executed by said communication executing means after a predetermined time has passed from output of a previous data communication request.
Claim 5
Dependent Claim
68 words
The system according to claim 1, wherein said communication executing means returns a response signal to said portable data processing terminal in response to the communication request; and said portable data processing terminal comprises power source control means for switching off a power source unnecessary for receiving the response signal during a period of time from output of the data communication request to reception of the response signal.
Claim 6
Dependent Claim
56 words
The system according to claim 1, wherein said portable data processing terminal comprises: a CPU controlling said portable data processing terminal; and a switch which is turned on upon connection with said interface unit; and said mode setting means comprises means for setting the communication mode by interrupting said CPU upon turning on of said switch.
Claim 7
Dependent Claim
84 words
A portable data processing terminal comprising: means for detecting connection with a predetermined interface unit which is provided in a data processing apparatus; means for setting said portable data processing terminal to a communication mode in response to a connection detection of said detecting means; means for outputting a communication request until said data processing apparatus responds to the communication request after said mode setting means sets the communication mode; and means for communicating data with the data processing apparatus via said interface unit.
Claim 8
Dependent Claim
84 words
A portable data processing terminal comprising: means for detecting connection with a predetermined interface unit which is provided in a data processing apparatus; means for setting said portable data processing terminal to a communication mode in response to a connection detection of said detecting means; means for outputting a communication request until said data processing apparatus responds to the communication request after said mode setting means sets the communication mode; and means for communicating data with the data processing apparatus via said interface unit.
Claim 9
Dependent Claim
22 words
The terminal according to claim 6, wherein said connector is an interface unit enabling the data communication with said data processing apparatus.
Claim 10
Dependent Claim
46 words
The terminal according to claim 6, wherein said communication request outputting means outputs a next communication request to said data processing apparatus if no response is returned from said data processing apparatus after a predetermined time has passed from output of a previous data communication request.
Claim 11
Dependent Claim
40 words
The terminal according to claim 6, further comprising power source control means for switching off a power source unnecessary for receiving the response during a period of time from output of the data communication request to reception of the response.
Claim 12
Dependent Claim
26 words
The portable data processing terminal according to claim 9, further comprising means for resetting the communication mode when said connection detecting means stops detecting the connection.
Claim 13
Dependent Claim
132 words
A data communication system for communicating data between a portable data processing terminal and a data processing apparatus, the system comprising: an interface unit connected to said data processing apparatus; means, provided in said portable data processing terminal, for setting said portable data processing terminal to a communication mode upon connection to said interface unit; control means, provided in said data processing apparatus, for making said data processing apparatus perform a communication processing upon connection of said portable data processing terminal to said interface unit; and means, respectively provided in said portable data processing terminal and said data processing apparatus, for performing a data communication between said portable data processing terminal and said data processing apparatus after said portable data processing terminal and said data processing apparatus become a communication enable state.
Claim 14
Dependent Claim
132 words
A data communication system for communicating data between a portable data processing terminal and a data processing apparatus, the system comprising: an interface unit connected to said data processing apparatus; means, provided in said portable data processing terminal, for setting said portable data processing terminal to a communication mode upon connection to said interface unit; control means, provided in said data processing apparatus, for making said data processing apparatus perform a communication processing upon connection of said portable data processing terminal to said interface unit; and means, respectively provided in said portable data processing terminal and said data processing apparatus, for performing a data communication between said portable data processing terminal and said data processing apparatus after said portable data processing terminal and said data processing apparatus become a communication enable state.
Claim 15
Dependent Claim
50 words
The data communication system according to claim 11, wherein said portable data processing terminal comprises means for outputting a communication request to said data processing apparatus when the communication mode is set, and said control means comprises for starting a communication software program upon when the communication request is received.
References Cited (Backward Citations)
US5421018A
Cited
US5371873A
Cited
US5269005A
Cited
US5454080A
Cited
US5526493A
Cited
US5598539A
Cited
US5598537A
Cited
US5566226A
Cited
US5611055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |