JPS605446A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To vary the tape speed in case an after-program is equal to a tape program and to perform the time correction within said program, by providing an arithmetic means which calculates automatically the delay or gain of time from the broadcast time point of the present program and the end time point of the program. CONSTITUTION:An arithmetic circuit 1 performs an arithmetic of (B-A+C) when the present time point A, the program end time B and the program time C applied to input terminals T1-T3 respectively are supplied. The calculated time is converted into the address value of an ROM by an address converting circuit 2, and the speed set value is delivered from an ROM3 and supplied to a program counter 4 in a servo circuit. For example, the calculated 10 seconds are corrected within 14 minutes and 50sec. In such a case, the counter output is set at 60.66Hz since the oscillation frequency of a reference crystal oscillating circuit 5 is set at 600kHz. Thus the tape speed is incresed by 1.0035. The output of the counter 4 drives a capstan motor 8 through a phase detecting circuit 6 and a capstan drive amplifier 7.

Description

[Detailed Description of the Invention] The object of the invention is to change the playback signal that is broadcast on air, especially in broadcasting stations, without being audibly detected. This invention relates to a magnetic 6-bit recording and reproducing device designed to be used as a spoon.

BACKGROUND OF THE INVENTION At present, private broadcasting stations carry out forwarding operations with various materials such as @Al'11 frame broadcasts. These materials are incorporated into time-divided program schedules and managed to the smallest unit of seconds. Commercial broadcasting is managed through commercial sales, and of course it is possible to sell commercials if there is free time, so time management in broadcasting operations is important, and A.P.
S (Auto PRoGl(AMING SFste)
Computer control, known as m), has become mainstream. What has become a problem is that when a live program or the like is extended in time, it may not be possible to cut out in the middle, and the program may interrupt the later program. In this case, if the duration is as long as 10 or 20 minutes, it can be handled by changing the program, but if the duration is less than a few minutes, a later program must be shown.

Purpose of the Invention The present invention has been made in view of the above problems, and provides a magnetic recording/reproducing device which fully varies the tape speed when the subsequent program is a tape program, and performs time correction within the li of that turn. The purpose is to provide

Summary of the Invention: According to the present invention, the above object is to be broadcast on a J. evening broadcast station;

In the magnetic recording and reproducing apparatus, there is provided 11 means for fully automatically calculating the break or advance time of the program from the current program broadcast time and end - program time 1.5], and the output of the calculation means. This is achieved by providing a magnetic recording and reproducing device which is characterized in that the capstan is changed in four ways based on the total fjT, which is input to all the storage means and is set in advance according to the address value of the storage means. I'll do it.

EXAMPLES OF THE INVENTION The invention will now be described in detail with reference to the figures. C is a system diagram of the magnetic recording and reproducing apparatus of the present invention, T, T3, and TIl are input terminals of the magnetic recording and reproducing apparatus; The even set time is input to the input terminal T3.

1 is an arithmetic circuit, and when the current time A, +W end time B, and program time C that are added to the human-powered hD elements T1, T2, and T3 are input, the arithmetic circuit performs all the calculations of B-A 10, for example, 9. The current time is 00:10, the end time is 9:15:00, and the program i1. If the interval between f is 15 minutes, the difference is calculated to be 110 seconds. This calculated 10 seconds total 1
In 4 minutes and 50 seconds, the 'Si' was correct. The calculated time is converted into an address value of a ROM (read only memory) by an address conversion circuit 2, and a speed setting value is outputted from the ROM 3 and manually entered into a program counter 4 in the servo circuit. 5 indicates a reference crystal oscillation circuit, which is excited at 600 MHz. As shown in Table 1, if the calculation value and the address in the memory address IZOM are determined, the program table
1 Regarding the above 10 seconds, the address value is 'xooo
xf address, and the -address output is 1 times the BCI) is '9891' and the program counter is 989.
Set to 1. :The number of oscillations of the Yoshi quasi-crystal oscillation circuit 5 is 6.
001G (Z, so the counter output is 60.66H
This means that the tape speed for z has increased by 1.0035. This is equivalent to multiplying the tape speed i by 1.011 to correct 10 seconds in 890 seconds (14 minutes 50 seconds).The output of the 40 program counter 4 is the phase 4 moxibustion circuit 6 and the capstan drive amplifier. The capstan motor 8 is sent out through the capstan motor 8 through the capstan 7 (with tape between the capstan 10 and the pinch roller as usual).
is attached), the carburetor's tan speed is detected by the full detection amplifier 13, the frequency is converted, and the phase detection circuit is used to compare it with the program counter to create the geared bustan motor servo.

As described above, the present invention has an OT function to correct when a time difference occurs between the J1 and J1 sending times, and has the effect of allowing busy group operations to be performed on time.

[Brief explanation of drawings]

The figure is a system diagram of the present invention's (1'A) regeneration system (Hl).
・ROM4...In program counter 5...Reference crystal oscillation circuit 6...Phase detection circuit 7...Capstan'HQ Excitation amplifier 8@...Cab stan motor

Claims (1)

[Claims] In a magnetic recording and reproducing device designed to play back all tapes of program contents aired at a broadcasting station, the delay or early first time of the program is fully automatically calculated from the program time to the difference between the current program broadcast time and the end time. (Magnetic recording characterized in that the output of the As means and the calculation means is input into the storage means, and the carburetor tank is completely liquefied in accordance with a preset calculated value according to the address value of the storage means. Playback device 1
picture.