US5942877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable information device and charger therefor
Assignee: Rohm Co Ltd
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Filing: 1997-01-29
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Granted: 1999-08-24
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Expires: 2017-01-29
Abstract
Abstract A portable information device includes a portable main part having a clocking function, a source part which is detachably attachable to the main part and contains secondary batteries serving as a power source for the main part, and a charger which is separate from the main part and serves to charge the source part. The charger includes a clock part for setting time, and the information device is adapted to cause time data from the clock part to be transmitted to the source part when the source part is charged by the charger and, when the source part is attached to the main part, to transmit time data updated by the source part to the main part and to thereafter cause the main part to continue updating the time data.
Inventors
- 👤 Kiyoshi Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/04; G06F1/14; G06F1/26; H; H02; H02J; H02J7/00; H02J7/40; H02J7/44; H02J7/485
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
134 words
A portable information device comprising: a portable main part having a clocking function; a source part which is detachably attachable to said main part and contains secondary batteries serving as a power source for said main part; and a charger which is separate from said main part and serves to charge said source part, said charger including a clock part for setting time, said information device being adapted to transmit time data from said clock part to said source part when said source part is charged by said charger, said information device being further adapted, when said source part is attached to said main part, to cause time data updated by said source part to be transmitted to said main part and to thereafter cause said main part to continue updating said time data.
Claim 2
Dependent Claim
134 words
A portable information device comprising: a portable main part having a clocking function; a source part which is detachably attachable to said main part and contains secondary batteries serving as a power source for said main part; and a charger which is separate from said main part and serves to charge said source part, said charger including a clock part for setting time, said information device being adapted to transmit time data from said clock part to said source part when said source part is charged by said charger, said information device being further adapted, when said source part is attached to said main part, to cause time data updated by said source part to be transmitted to said main part and to thereafter cause said main part to continue updating said time data.
Claim 3
Dependent Claim
48 words
The portable information device of claim 1 wherein said main part includes a non-volatile semiconductor memory device, said clocking function ceasing to function when said source part experiences a voltage drop or is removed from said main part such that said main part stops being able to function.
Claim 4
Dependent Claim
93 words
A portable information device comprising: a portable main part with a clocking function, containing a source part having rechargeable secondary batteries; and a charger which is separate from said main part and serves to charge said source part, said charger including a clock part for setting time, said information device being adapted to cause time data from said clock part to be transmitted to said main part when said source part in said main part is charged by said charger, and to thereafter cause said main part to continue updating said time data.
Claim 5
Dependent Claim
93 words
A portable information device comprising: a portable main part with a clocking function, containing a source part having rechargeable secondary batteries; and a charger which is separate from said main part and serves to charge said source part, said charger including a clock part for setting time, said information device being adapted to cause time data from said clock part to be transmitted to said main part when said source part in said main part is charged by said charger, and to thereafter cause said main part to continue updating said time data.
Claim 6
Dependent Claim
41 words
The portable information device of claim 3 wherein said main part includes a non-volatile semiconductor memory device, said clocking function ceasing to function when said source part experiences a voltage drop such that said main part stops being able to function.
Claim 7
Dependent Claim
91 words
A portable information device comprising: a portable main part with a clocking function; a source part which is detachably attachable to said main part and contains primary batteries serving as a power source for said main part; and a clock device which is separate from said main part and is capable of setting time, said information device being adapted to cause time data from said clock device to be transmitted through said source part to said main part and to thereafter cause said main part to continue updating said time data.
Claim 8
Dependent Claim
91 words
A portable information device comprising: a portable main part with a clocking function; a source part which is detachably attachable to said main part and contains primary batteries serving as a power source for said main part; and a clock device which is separate from said main part and is capable of setting time, said information device being adapted to cause time data from said clock device to be transmitted through said source part to said main part and to thereafter cause said main part to continue updating said time data.
Claim 9
Dependent Claim
48 words
The portable information device of claim 5 wherein said main part includes a non-volatile semiconductor memory device, said clocking function ceasing to function when said source part experiences a voltage drop or is removed from said main part such that said main part stops being able to function.
Claim 10
Dependent Claim
106 words
A portable information device comprising: a portable main part with a clocking function, said main part including a clocking control part and a source part, said source part serving as a power source for said clocking function but not containing any backup batteries for said power source; and a clock device which is separate from said main part and includes a clock device for setting time, said clocking control part serving to receive clock data from said clock device at least once after said source part is charged to a specified level and to thereafter carry out said clocking function based on the received clock data.
Claim 11
Dependent Claim
106 words
A portable information device comprising: a portable main part with a clocking function, said main part including a clocking control part and a source part, said source part serving as a power source for said clocking function but not containing any backup batteries for said power source; and a clock device which is separate from said main part and includes a clock device for setting time, said clocking control part serving to receive clock data from said clock device at least once after said source part is charged to a specified level and to thereafter carry out said clocking function based on the received clock data.
Claim 12
Dependent Claim
41 words
The portable information device of claim 7 wherein said main part includes a non-volatile semiconductor memory device, said clocking function ceasing to function when said source part experiences a voltage drop such that said main part stops being able to function.
Claim 13
Dependent Claim
71 words
A charger for charging a source part of a portable main part of an information device having a clocking function and being separate from said main part and provided with rechargeable secondary batteries, said charger comprising: a clock part for setting time; and a signal transmitting circuit for transmitting time data from said clock part to said main part and thereafter causing said main part to keep updating said time data.
Claim 14
Dependent Claim
71 words
A charger for charging a source part of a portable main part of an information device having a clocking function and being separate from said main part and provided with rechargeable secondary batteries, said charger comprising: a clock part for setting time; and a signal transmitting circuit for transmitting time data from said clock part to said main part and thereafter causing said main part to keep updating said time data.
Claim 15
Dependent Claim
41 words
The charger of claim 9 wherein said time data are transmitted from said clock part to said main part directly without passing through said source part and said signal transmitting circuit is adapted to transmit said time data by serial transmission.
Claim 16
Dependent Claim
41 words
The charger of claim 9 wherein said time data are transmitted from said clock part to said main part directly without passing through said source part and said signal transmitting circuit in adapted to transmit said time data through wireless means.
Claim 17
Dependent Claim
38 words
The charger of claim 9 wherein said time data are transmitted from said clock part to said main part through said source part and said signal transmitting circuit in adapted to transmit said time data by serial transmission.
Claim 18
Dependent Claim
38 words
The charger of claim 9 wherein said time data are transmitted from said clock part to said main part through said source part and said signal transmitting circuit in adapted to transmit said time data through wireless means.
Claim 19
Dependent Claim
57 words
A clock device which is separate from a portable information device having a clocking function, said clock device comprising: a clock part for setting time; and a signal transmitting circuit for transmitting time data by serial transmission from said clock part to said information device and thereafter causing said information device to keep updating said time data.
Claim 20
Dependent Claim
57 words
A clock device which is separate from a portable information device having a clocking function, said clock device comprising: a clock part for setting time; and a signal transmitting circuit for transmitting time data by serial transmission from said clock part to said information device and thereafter causing said information device to keep updating said time data.
Claim 21
Dependent Claim
21 words
The clock device of claim 14 wherein said signal transmitting circuit in adapted to transmit said time data through wireless means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-23 | 2003-02-22 | 2003-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-23 | 2007-02-22 | 2007-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-23 | 2011-02-22 | 2011-08-24 | $7700.00 | Window Closed / Lapsed |