JPS5570979A - Display unit for tape running time - Google Patents
Display unit for tape running timeInfo
- Publication number
- JPS5570979A JPS5570979A JP14343678A JP14343678A JPS5570979A JP S5570979 A JPS5570979 A JP S5570979A JP 14343678 A JP14343678 A JP 14343678A JP 14343678 A JP14343678 A JP 14343678A JP S5570979 A JPS5570979 A JP S5570979A
- Authority
- JP
- Japan
- Prior art keywords
- tape running
- running time
- time
- adder
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE: To accurately display the tape running time or residual time, by operating the tape running time or residual time from the ratio of angular velocity at winding and supply side and providing a clock.
CONSTITUTION: The adder and substrator 17b is provided, which connects the operation circuits 16a, and 16b, adder and subtractor 17a, and time pulse generation circuit 20 between the photo detection element 9 and the display circuit 23 located opposingly with the light emitting element 8 to the slit discs 1, 2 directly coupled to the winding and supply reel, via the gate circuit 14c. Thus, after the pulse signal produced at the photo detection element 9 is amplified and wave shaped, it is the gate control signal and the logical product with the reference signal is taken, then it is counted and inputted to the operation circuit 16a. After calculating the ratio of angular velocity β, the tape running time T is calculated at the operator 16b via the correction constants A and B from the adder and subtractor 17a inputting the comparison value between the difference of the tape running time T and the tape running time memory value and the reference time, and it is displayed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14343678A JPS5570979A (en) | 1978-11-22 | 1978-11-22 | Display unit for tape running time |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14343678A JPS5570979A (en) | 1978-11-22 | 1978-11-22 | Display unit for tape running time |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5570979A true JPS5570979A (en) | 1980-05-28 |
Family
ID=15338657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14343678A Pending JPS5570979A (en) | 1978-11-22 | 1978-11-22 | Display unit for tape running time |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5570979A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105873A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Magnetic recording and playback device |
JPS57143772A (en) * | 1981-02-27 | 1982-09-06 | Pioneer Electronic Corp | Tape amount detecting system |
-
1978
- 1978-11-22 JP JP14343678A patent/JPS5570979A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57105873A (en) * | 1980-12-19 | 1982-07-01 | Matsushita Electric Ind Co Ltd | Magnetic recording and playback device |
JPS6252389B2 (en) * | 1980-12-19 | 1987-11-05 | Matsushita Electric Ind Co Ltd | |
JPS57143772A (en) * | 1981-02-27 | 1982-09-06 | Pioneer Electronic Corp | Tape amount detecting system |
JPH0226313B2 (en) * | 1981-02-27 | 1990-06-08 | Pioneer Electronic Corp |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5570979A (en) | Display unit for tape running time | |
JPS5316538A (en) | Address detector | |
JPS539528A (en) | Color photographic light sensitive material | |
JPS5776545A (en) | Method and device for cutting of rear edge of photo film | |
JPS5547720A (en) | Channel selection unit | |
JPS5341211A (en) | Remaining tape quantity indicator | |
JPS5680861A (en) | Electronic tape counter | |
JPS5360217A (en) | Running condition display device of magnetic recorder-reproducer | |
JPS5316544A (en) | Recording method of program processing time | |
JPS53119014A (en) | Tape quantity detector for tape recorder | |
JPS5453515A (en) | Tape recorder | |
JPS5260132A (en) | Digital circuit for camera | |
JPS5564672A (en) | Display system for tape remaining time | |
JPS52308A (en) | Motor control circuit | |
JPS51140721A (en) | Camera with a film rewinding operation monitor | |
JPS5512556A (en) | Control unit for magnetic tape | |
JPS56163564A (en) | Display system of tape residual time | |
JPS5362921A (en) | Frame synchronous circuit | |
JPS5438121A (en) | Camera with sound producing means | |
JPS5510866A (en) | Winding device | |
JPS5286304A (en) | Tape speed change-over system | |
JPS5573947A (en) | Leader tape detector | |
JPS5377412A (en) | Noise eliminating circuit | |
JPS54119224A (en) | Tape recorder | |
JPS56612A (en) | Navigate meter |