EP0656600A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
An information processing system using portable terminal unit and data communication adapter therefor
Assignee: Fujitsu Ltd
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Filing: 1994-11-04
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Granted: —
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Expires: 2014-11-04
Abstract
Abstract In an information processing system having a portable terminal unit (1), such as a hand-held computer, driven by a rechargeable battery (102) and a data communication adaptor (2) for enabling communication between the portable terminal unit and a host computer of the system, the terminal unit and the data communication adaptor are designed to minimize the size thereof in the following five ways. First, a memory card holding mechanism (60) for connecting the memory card (3) of the portable terminal unit is provided between a swinging back lid (6) and a recess of the back casing. Second, a normal interface (101) and a high-speed interface (105) are both provided in the portable terminal unit and the data communication adaptor respectively. Third, an auxiliary connector (16) for an optional device to extend a function of the portable terminal unit is provided in the opening (48) of the casing of the portable terminal unit movable in three dimensions mounted on a printed circuit board. Fourth, a moisture resistant seal (18) made of rubber or resin is molded integrally onto one of the joining edges of an upper casing (10A) and a lower casing (10B). Fifth, an electric power source portion (50) of the data communication adaptor is used not only for charging the battery of the portable terminal unit but also for supplying a power adequate for enabling a data transmission operation thereof.
Inventors
- 👤 Takao Obata
- 👤 Mitsuaki Kumagai
- 👤 Akihiko C/O Fujitsu Limited Iura
- 👤 Akio C/O Fujitsu Limited Murata
- 👤 Shinji C/O Fujitsu Limited Yamamoto
- 👤 Makoto Sato
- 👤 Akira Okawado
- 👤 Shinichiro C/O Fujitsu Limited Tsurumaru
- 👤 Maki Miyata
- 👤 Toshiyuki Kobayashi
- 👤 Nobuaki Akasawa
- 👤 Masahiko Okano
- 👤 Takao Miyanaga
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 18:27
CPC Classifications
G; G06; G06K; G06K7/00; G06K7/10; G06K7/10544; G06K7/10821; G06K7/10881; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1632; G06K13/00; G06K13/02; G06K13/08; G06K17/00; G06K17/0022; G06K7/0013; G06K7/0021; G06K7/0056; G06K7/006; G06K7/1098
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
102 words
A portable terminal unit (1) which is driven by a battery (102), and is equipped with a control circuit, a keyboard (11), and connectors comprising: a lid (6) provided on the back surface of a casing (10) of the portable terminal unit (1) whose free end is rotatably supported by an axle (66) provided on the casing (10); and a memory card holding mechanism (60) having a connector for connecting a memory card (3), provided between the lid (6) and a recess (65) of the casing (10) whose end is rotatably supported by an another axle (63) provided on the casing (10).
Claim 2
Dependent Claim
42 words
A system as set forth in claim 1, wherein the portable terminal unit (1) further comprises an interlocking mechanism (70) for interlocking a movement of the memory card holding mechanism (60) with an opening and a closing movement of the lid (6).
Claim 3
Dependent Claim
52 words
A system as set forth in claim 2, wherein the interlocking mechanism (60) is comprised of a bracket 72 provided on the bottom face of the lid (6) and a pin (71) provided on a connector holder (62) in the memory card holding mechanism (60) to be inserted into the bracket (72).
Claim 4
Dependent Claim
31 words
A system as set forth in claim 2 or 3, wherein an opening angle of the lid (6) is larger than an opening angle of the memory card holding mechanism (60).
Claim 5
Dependent Claim
99 words
A portable terminal unit (1) which is driven by a battery (102), and is equipped with a control circuit, a keyboard (11), and connectors comprising: a normal interface portion (101) provided in the control circuit for controlling data transmission between a host computer and the portable terminal unit (1); a high-speed interface portion (105) provided in the control circuit for controlling the high-speed data transmission between the host computer and the portable terminal unit (1); and a selector (110) provided for selecting the normal interface portion (101) and the high-speed interface portion (105) when the data transmission is executed.
Claim 6
Dependent Claim
76 words
A data communication adaptor (2) for a portable terminal unit (1) comprising: a normal interface portion (201) for enabling data transmission between a host computer and the portable terminal unit (1); a high-speed interface portion (205) for enabling high-speed data transmission between the host computer and the portable terminal unit (1); and a selector (210) for selecting one of the normal interface portion (201) and the high-speed interface portion (205) when the data transmission is executed.
Claim 7
Dependent Claim
139 words
A portable terminal unit (1) which is driven by a battery (102), and is equipped with a control circuit, a keyboard (11), and connectors, to which an optional device (4) for extending a function of the portable terminal unit (1) can be connected by an auxiliary connector (16), the auxiliary connector (16) comprising: an opening (48) around the auxiliary connector (16) provided on the casing (10); a printed circuit board (45) positioned in the opening (48) on which the auxiliary connector (16) is mounted; a bias means (44) provided in the opening (48) for biasing the printed circuit board (45) from the bottom side to an open air side of the opening (48); and a stopper means (47) provided in the opening (48) for retaining and regulating the position of the printed circuit board (45) inside the opening (48).
Claim 8
Dependent Claim
75 words
A portable terminal unit (1) as set forth in claim 7, wherein; the optional device (4) has a projected portion (43) on one end thereof; the portable terminal unit (1) has a recess (10D) corresponding to the projected portion (43); and the optional device (4) can be connected to the portable terminal unit (1) through the auxiliary connector (16) by rotating the optional device (4) with the projected portion (43) inserted in the recess (10D).
Claim 9
Dependent Claim
50 words
A portable terminal unit (1) as set forth in claim 7, wherein the bias means (44) is comprised of a flexible cable connecting a main printed circuit board (42) installed inside the portable terminal unit (1) and the printed circuit board (45) on which the auxiliary connector (16) is mounted.
Claim 10
Dependent Claim
76 words
A portable terminal unit (1) as set forth in claim 9, wherein; the optional device (4) has a projected portion (43) on one of the end; the portable terminal unit (1) has a recess (10D) corresponding to the projected portion (43); and the optional device (4) can be connected to the portable terminal unit (1) through the auxiliary connector (16) by rotating the optional device (4) with the projected portion (43) inserted in the recess (10D).
Claim 11
Dependent Claim
71 words
A portable terminal unit (1) which is driven by a battery (102), and is equipped with a control circuit, a keyboard (11), and connectors, comprising: an upper casing (10A) made of molded plastic; a lower casing (10B) made of molded plastic; and a moisture resistant seal (18) made of rubber or resin being molded onto one of the joining edge of the upper casing (10A) and the lower casing (10B) integrally.
Claim 12
Dependent Claim
31 words
A portable terminal unit (1) as set forth in claim 11, wherein the moisture resistant seal (18) is extended along an inner wall of the casing (10A) within a predetermined length.
Claim 13
Dependent Claim
38 words
A portable terminal unit (1) as set forth in claim 11, wherein the casing (10) of the portable terminal unit (1) has another opening (33), and the moisture resistant seal (18) is extended to seal the opening (33).
Claim 14
Dependent Claim
32 words
A portable terminal unit (1) as set forth in claim 13, wherein the opening (33) is used for radiating an alarm from a buzzer (32) provided inside the portable terminal unit (1).
Claim 15
Dependent Claim
141 words
A data communication adaptor (2) for a portable terminal unit (1), the electric power source portion (50) thereof comprising: a charge control circuit (51) for controlling a charge operation of the battery (102) provided in the portable terminal unit (1); a power source circuit (50) for supplying power to the circuits of the portable terminal unit (1) and for being used as a power source of the charging operation to the battery (102); a communication control circuit (52) for intermediating a data transmission operation between the portable terminal unit (1) and the host computer of the system; and a switching circuit (56) for supplying power to the communication control circuit (52) while the portable terminal unit (1) and the host computer communicate with each other after releasing the connection between the charge control circuit (51) and the portable terminal unit (1).
Claim 16
Dependent Claim
61 words
A data communication adaptor (2) as set forth in claim 15, wherein the power supply circuit (50) of the communication adaptor (2) is further comprised of a supplemental current supply circuit for supplying an adequate current to the portable terminal unit for the transmission to the host computer after the connection with the portable terminal unit, by the switching circuit (56).
Claim 17
Dependent Claim
44 words
A data communication adaptor (2) as set forth in claim 15, wherein the power supplying operation and releasing operation by the switching circuit (56) is executed when the switching circuit (56) detects the input of the transmission data from the portable terminal unit (1).
Claim 18
Dependent Claim
61 words
A data communication adaptor (2) as set forth in claim 17, wherein the power supply circuit (50) of the communication adaptor (2) is further comprised of a supplemental current supply circuit for supplying an adequate current to the portable terminal unit for the transmission with the host computer after the connection with the portable terminal unit by the switching circuit (56).
Claim 19
Dependent Claim
75 words
A data communication adaptor (2) as set forth in claim 17, wherein the switching circuit (56) is further comprised of a timer actuated by the cut off of the transmission data from the portable terminal unit (1), and the switching circuit (56) stops the power supply to the communication control circuit (52) and connects the charge control circuit (51) and the portable terminal unit (1) for executing a charging operation of the battery (102) again.
Claim 20
Dependent Claim
61 words
A data communication adaptor (2) as set forth in claim 19, wherein the power supply circuit (50) of the communication adaptor (2) is further comprised of a supplemental current supply circuit for supplying an adequate current to the portable terminal unit for the transmission with the host computer after the connection with the portable terminal unit by the switching circuit (56).
References Cited (Backward Citations)
No citation records indexed.
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