JPH01217786A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To automatically set a clock for controlling its timer by time of day without adjusting by hand by correcting always automatically the clock time for the timer operation to a time signal. CONSTITUTION:The timer controlling clock is set by utilizing the radio time signal broadcast regularly on the first program of NHK to meet accurately the standard time. This information as a fixed signal to be transmitted (three times in 400Hz and afterward one time in 800Hz) based on the Japanese standard time is received by a tuner part 1, and when the signal of 400Hz is inputted, its peak value is extractively detected by a P/H (peak holder) 2b after passing an uppermost B.P.F (band pass filter) 2a, and is compared with a threshold TH by a comparator 2c to turn out H. When the next signal of 400Hz is inputted, the same operation is performed, and when the following signals of 400Hz and 800Hz are inputted, an adder 3 makes them all H, and time is controlled by a time control part 4, and then a display of a display part 5 is corrected. By this method, the time setting can automatically be carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to time adjustment of a magnetic recording/reproducing device having a timer.

[Prior Art] The time setting of a timer clock of a magnetic recording/reproducing device is manually set in accordance with a time signal or the like by setting the mode to time setting.

[Problems to be Solved by the Invention] In the conventional example described above, the time was set by listening to the time signal in the time setting mode, and therefore had the following drawbacks.

l) It is a hassle to set the time manually each time.

2) It is difficult to match accurately because it is done manually.

``Along with this, the timer operation became uncertain, which resulted in an increase in the amount of unnecessary recording.

This invention was made in order to solve this problem, and it is possible to set the time for timer control without requiring human manual operation.
An object of the present invention is to provide a magnetic recording/reproducing device that can automatically adjust the time.

[Means for Solving the Problems] In order to achieve the above object, the magnetic recording/reproducing device of the present invention always keeps the time of the timer operating clock relative to the time signal.
It has a configuration that automatically corrects it.

[Operation] According to the present invention, the regular time signal of NHK 1st broadcast (currently 7 o'clock, 12 o'clock, 21 o'clock on the 1st 3 times)
Take advantage of. This time signal transmits a constant signal according to Japan Standard Time (after 2 or 3 times of 400H, 800H,
(1 time). Then, when that signal is received by a part of the tuner, it automatically adjusts the displayed time by comparing it with the currently displayed time.

[Embodiment] The structure and operation of an embodiment of the magnetic recording/reproducing apparatus of the present invention will be described below with reference to FIG.

FIG. 1 is a time automatic correction block diagram showing an embodiment of the magnetic recording/reproducing apparatus of the present invention, in which 1 is a tuner section, 2a is a tuner section;
is a band pass filter (B, P, F), 2b is a peak holder (P/H), 2c is a comparator that compares the pulse whose peak value is detected by P/H 2b with a predetermined value, 3 is an adder,
4 is a time control section, 5 is a display section, 6 is a timer, 7 is a system controller, and 8 is an operation section.

In Fig. 1, l is the tuner part of the magnetic recording/reproducing device, and when it receives the first NHK broadcast and receives a signal of 400 H on B, P, and F 2a,
, P, F 2a, P/H2b extracts and detects the peak value, and comparator 2c compares it with a threshold value (TH) to make it high (H). When the value of comparator 2c becomes H, the following 4
Wait for the signal 00H2 to enter, and when it comes, it operates as before, and when it enters 400 and 800 Hz, all adders 3 become H. Then, the time control section 4 controls the time and the display on the display section 5 is corrected.

The timer 6 operates the system controller 7 based on the time adjusted by the control unit 4 and information such as the recording start time, recording end time, and recording channel set by the operation unit 8.
Set the device to each mode.

[Effects of the Invention] As explained above, according to the automatic time setting device for a magnetic recording/reproducing device of the present invention, accurate timer operation is always possible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of automatic time correction showing an embodiment of the magnetic recording/reproducing apparatus of the present invention. In the figure. l: Tuner section 2a of magnetic recording/reproducing device: B, P, F 2b: P/H 2c: Comparator 3: Adder 4: Time control section 5: Display section 6: Timer 7: System controller 8: Operation section substitute Person Patent Attorney 1) Haru Kitatake

Claims (1)

[Claims] 1. A magnetic recording and reproducing device, characterized in that the magnetic recording and reproducing device is equipped with a configuration that automatically adjusts the time of a clock for timer operation of the magnetic recording and reproducing device with respect to a time signal.