US4150435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape recorder with display function
Assignee: Olympus Corp
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Filing: 1977-11-29
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Granted: 1979-04-17
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Expires: 1997-11-29
Abstract
Abstract A tape recorder with display function comprises a tape recorder unit, a power source terminal connected to a power source for supplying power to the tape recorder unit, a voltage detector for detecting the voltage of the power source via the power source terminal, and a light emission semiconductor display device for digitally displaying the output of the voltge detector as the voltage of the power source.
Inventors
- 👤 Ken Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:47
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/36; G01R31/3644; G01R31/3648; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542; G01R31/3646; G06; G06F; G06F1/00; G06F1/26; G06F15/00; G06F15/02; G06F15/0208; G06F3/00; G06F3/01; G06F3/02; G11; G11B; G11B27/00; G11B27/10; G11B27/34; G11B27/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A tape recorder device with display function comprising: a power source terminal connected to a DC power source; a tape recorder unit connected to said DC power source through said DC power source terminal to supply power; a desk top calculator unit connected to said DC power source via said power source terminal to receive power from said DC power source, and including a key board, a control circuit, a memory/arithmetic circuit and a display device; a voltage detector connected to said DC power source via said power source terminal for detecting the voltage of said DC power source; memory means connected to said voltage detector and said key board for storing the voltage information detected by at least said voltage detector and for reading out the information in response to the operation of at least one key in operation keys included in said key board; and display means connected to said memory means for displaying said read out information in a display device included in said desk top calculator.
Claim 2
Dependent Claim
170 words
A tape recorder device with display function comprising: a power source terminal connected to a DC power source; a tape recorder unit connected to said DC power source through said DC power source terminal to supply power; a desk top calculator unit connected to said DC power source via said power source terminal to receive power from said DC power source, and including a key board, a control circuit, a memory/arithmetic circuit and a display device; a voltage detector connected to said DC power source via said power source terminal for detecting the voltage of said DC power source; memory means connected to said voltage detector and said key board for storing the voltage information detected by at least said voltage detector and for reading out the information in response to the operation of at least one key in operation keys included in said key board; and display means connected to said memory means for displaying said read out information in a display device included in said desk top calculator.
Claim 3
Dependent Claim
116 words
A tape recorder device with display function according to claim 1, in which said tape recorder unit comprises: means for generating a record/reproduction signal; a level detector connected to said record/reproduction signal generating means for detecting a record/reproduction level from the record/ reproduction signal; a reference level signal generator for generating a reference level signal; a comparator/operation circuit connected to the outputs of said level detector and said reference level signal generator in which the record/reproduction level and the reference level are compared and operated to produce information representing the magnitude of the record/reproduction level related to the reference level said information from said comparator/operation circuit being supplied to said display means to display said information.
Claim 4
Dependent Claim
58 words
A tape recorder device with display function according to claim 1, in which said voltage detector includes a voltage dividing circuit connected to said DC power source for dividing said DC power source voltage and an A-D converter connected to said voltage dividing circuit for converting the divided voltage of said voltage dividing circuit into corresponding digital signal.
Claim 5
Dependent Claim
22 words
A tape recorder device with display function according to claim 1, in which said display device is of a dynamic display type.
Claim 6
Dependent Claim
22 words
A tape recorder device with display function according to claim 1, in which said display device is of light emission diode type.
Claim 7
Dependent Claim
19 words
A tape recorder device according to claim 1, in which said display device is of a static display type.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-16 | 1982-10-16 | 1983-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-16 | 1986-10-16 | 1987-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-16 | 1990-10-16 | 1991-04-17 | $7700.00 | Window Closed / Lapsed |