EP0496383A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Data input and display apparatus
Assignee: Sony Corp
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Filing: 1992-01-22
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Granted: —
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Expires: 2012-01-22
Abstract
Abstract A data input and display apparatus comprising a tablet (21) to which an information signal is inputted by designating a coordinate position, a display circuit (42a, 42b, 43) for generating a display signal in accordance with the information signal inputted from the tablet (21), a display member (22) capable of visually representing the display signal, a control circuit (46) for generating a control signal by detecting the presence of any input to the tablet (21), a light source (26) for illuminating the display member (22) from behind, a light source controller (63) for controlling the light source (26) in response to the control signal generated from the control circuit (46), a power circuit (64) for obtaining a driving voltage from a voltage source, a means (905, 914) for detecting the state of the voltage source, and a luminance control means (915) for controlling the luminance of the light source (26) in response to the output of the detecting means (905, 914). The power circuit (64) is capable of selecting either a first voltage produced by rectifying an AC power supply (17), or a second voltage obtained from a battery (19).
Inventors
- 👤 Hideki Takahara
- 👤 Mitsuaki Sugimoto
- 👤 Toshio Takano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/34; G09G3/3406; H; H01; H01M; H01M50/00; H01M50/20; H01M50/247; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542; G01R31/00; G01R31/36; G01R31/3644; G01R31/3646; G01R31/3648; G06; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1626; G06F1/1633; G06F1/1635; G06F1/1637; G06F1/26; G06F1/32; G06F1/3203; G06F1/3206; G06F1/3215; G06F1/3218; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F2200/00; G06F2200/16; G06F2200/163; G06F2200/1632; G06F2200/1633; G09G2320/00; G09G2320/06; G09G2320/0606; G09G2320/0626; G09G2320/0633; G09G2330/00; G09G2330/02; G09G2330/021; G09G2330/022; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
111 words
A data input and display apparatus comprising: a tablet (21) to which an information signal is inputted by designating a coordinate position; a display circuit (42a, 42b, 43) for generating a display signal in accordance with the information signal inputted from said tablet (21); a display member (22) capable of visually representing said display signal; a control circuit (46) for generating a control signal by detecting the presence of any input to said tablet (21); a light source (26) for illuminating said display member (22) from behind; and a light source controller (63) for controlling said light source (26) in response to the control signal generated from said control circuit (46).
Claim 2
Dependent Claim
27 words
The data input and display apparatus according to claim 1, wherein the information signal is inputted to said tablet (21) by means of a pen member (6).
Claim 3
Dependent Claim
65 words
The data input and display apparatus according to claim 1 or 2, wherein said display member (22) is a liquid crystal display member, and said light source (26) is disposed behind said liquid crystal display member while said tablet (21) is superposed on the front thereof so that the display signal visually represented on said display member (22) is rendered visible through said tablet (21).
Claim 4
Dependent Claim
29 words
The data input and display apparatus according to anyone of claims 1 to 3, further comprising a means (62) for previously setting a desired on-state of said light source.
Claim 5
Dependent Claim
28 words
The data input and display apparatus according to claim 4, wherein said setting means includes a switch (3) for determining the initial on-state of said light source (26).
Claim 6
Dependent Claim
38 words
The data input and display apparatus according to anyone of claims 1 to 5, wherein said light source controller (63) is so controlled as to select either an on-state of said light source (26) or an off-state thereof.
Claim 7
Dependent Claim
62 words
The data input and display apparatus according to claim 6, wherein said control circuit (46) detects the absence of any input to said tablet (21) during a predetermined time and, in response to the result of such detection, controls said light source controller (63) in such a manner as to change the on-state of said light source (26) to the off-state thereof.
Claim 8
Dependent Claim
38 words
The data input and display apparatus according to claim 6 or 7, wherein the on-state of said light source (26) includes a first or light state of said light source (26) and a second or dark state thereof.
Claim 9
Dependent Claim
58 words
The data input and display apparatus according to claim 8, wherein said control circuit (46) detects the absence of any input to said tablet (21) during a predetermined time and, in response to the result of such detection, controls said light source controller (63) in such a manner as to change said first state to said second state.
Claim 10
Dependent Claim
41 words
The data input and display apparatus according to claim 4, wherein said setting means is shown in a setting window (84) displayed on said display member (22), and the setting is executed by designating a desired item in said window (84).
Claim 11
Dependent Claim
25 words
The data input and display apparatus according to anyone of claims 7 to 10, further having a means capable of selectively setting said predetermined time.
Claim 12
Dependent Claim
35 words
The data input and display apparatus according to anyone of claims 7 to 11, wherein the state after the lapse of said predetermined time is canceled by a next information input to said tablet (21).
Claim 13
Dependent Claim
187 words
A data input and display apparatus comprising: an input means for inputting an information signal; a display circuit (42a, 42b, 43) for generating a display signal in accordance with the information signal obtained from said input means; a display member (22) capable of visually representing said display signal; a control circuit (46) for generating a control signal by detecting the presence of any input to said input means; a light source (26) for illuminating said display member from behind; a light source controller (63) for controlling said light source (26) in response to the control signal generated from said control circuit (46); a power circuit (64) for obtaining a driving voltage from a voltage source; a means for detecting (905, 914) the state of said voltage source; and a luminance control means (915) for controlling the luminance of said light source (26) in response to the output of said detecting means (905, 914); wherein said power circuit (64) is capable of selecting, as said voltage source, either a first voltage produced by rectifying an AC power supply (17), or a second voltage obtained from a battery (19).
Claim 14
Dependent Claim
30 words
The data input and display apparatus according to claim 13, wherein said input means is a tablet (21) to which an information signal is inputted by designating a coordinate position.
Claim 15
Dependent Claim
46 words
The data input and display apparatus according to claim 13 or 14, wherein said luminance control circuit (915) is so controlled, in response to the output of said detecting means (905, 914), as to select either an on-state of said light source or an off-state thereof.
Claim 16
Dependent Claim
67 words
The data input and display apparatus according to anyone of claims 13 to 15, wherein said luminance control circuit (915) detects the absence of any input to said tablet (21) during a predetermined time and, in response to the result of such detection, controls said light source controller (63) in such a manner as to change the on-state of said light source (26) to the off-state thereof.
Claim 17
Dependent Claim
40 words
The data input and display apparatus according to anyone of claims 13 to 16, wherein the on-state of said light source (26) includes a first or light state of said light source (26) and a second or dark state thereof.
Claim 18
Dependent Claim
63 words
The data input and display apparatus according to anyone of claims 13 to 17, wherein said luminance control circuit (915) detects the absence of any input to said tablet (21) during a predetermined time and, in response to the result of such detection, controls said light source controller (63) in such a manner as to change said first state to said second state.
Claim 19
Dependent Claim
65 words
The data input and display apparatus according to anyone of claims 13 to 18, wherein said control circuit (46) has a setting means which detects the absence of any input to said input means (21) during a predetermined time and, when said first voltage is not used, selects a mode to switch off said power source automatically in response to the result of such detection.
Claim 20
Dependent Claim
56 words
The data input and display apparatus according to claim 19, wherein said setting means detects the absence of any input to said input means (21) during a predetermined time and, regardless of the use of said first voltage, selects a mode to switch off said power source automatically in response to the result of such detection.
Claim 21
Dependent Claim
51 words
The data input and display apparatus according to claim 20, wherein said setting means is further capable of setting a mode not to switch off said power source automatically even when the result of the detection signifies the absence of any input to said input means (21) during said predetermined time.
Claim 22
Dependent Claim
24 words
The data input and display apparatus according to anyone of claims 16 to 21, further comprising a means for selectively setting said predetermined time.
Claim 23
Dependent Claim
35 words
The data input and display apparatus according to anyone of claims 16 to 22, wherein the state after the lapse of said predetermined time is canceled by a next information input to said tablet (21).
References Cited (Backward Citations)
No citation records indexed.
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