JPS5462809A - Magnetic recording information identifying apparatus - Google Patents
Magnetic recording information identifying apparatusInfo
- Publication number
- JPS5462809A JPS5462809A JP12932577A JP12932577A JPS5462809A JP S5462809 A JPS5462809 A JP S5462809A JP 12932577 A JP12932577 A JP 12932577A JP 12932577 A JP12932577 A JP 12932577A JP S5462809 A JPS5462809 A JP S5462809A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- signals
- terminal
- recording information
- 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.)
- Granted
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE: To enable the missing clock in recording information to be accurately and readily identified by detecting the missing clock signal from the output states of a window width circuit and a counter circuit.
CONSTITUTION: Output signals 6, 4 of a window width circuit 5 and an AND 3 are inputted respectively to the terminals D, T of a DFF circuit 7. To the terminal C is generated the One's signal 8 of an opposite level when the signal is produced in the terminal D at the immediate before the time when the signal is applied to the terminal T. However, when a fall signal is applied to the reset terminal R connecting to the output 10 of a delay circuit 9, the signal 8 annihilates. The circuit 9 outputs a delayed one's signal 8' when a specified time elapses after the signal 8 was inputted. Therefore, when (n) clock signals or data signals of recording information 1 are produced from the annihilation of the signal 6 until the next annihilation, the signals 9 are obtained in n-1 number. Then, if the number of production of the signals 9 is checked at the timings at which the signal 6 annihilates by checking the outputs of an odd number detection circuit 11, then the presence or not of any missing clock may be accurately and readily detected.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12932577A JPS5944695B2 (en) | 1977-10-28 | 1977-10-28 | Information identification device with Mitsuming clock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12932577A JPS5944695B2 (en) | 1977-10-28 | 1977-10-28 | Information identification device with Mitsuming clock |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5462809A true JPS5462809A (en) | 1979-05-21 |
JPS5944695B2 JPS5944695B2 (en) | 1984-10-31 |
Family
ID=15006787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12932577A Expired JPS5944695B2 (en) | 1977-10-28 | 1977-10-28 | Information identification device with Mitsuming clock |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5944695B2 (en) |
-
1977
- 1977-10-28 JP JP12932577A patent/JPS5944695B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5944695B2 (en) | 1984-10-31 |
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