JPS6035389A - Display device for amount of tape - Google Patents

Abstract

PURPOSE:To omit an arithmetic part and simplify constitution, and reduce a display device in size by storing information on a reference position and tape amount information proportional to an angle of rotation per specific unit time at every rotational angle position from the reference position, and reading stored information on a rotating body from the reference position at intervals of specific unit time. CONSTITUTION:Eight conductive brushes 9a-9h are provided as a pickup means so as to read stored information of the rotating body 5. Data signals picked up by the conductive brushes 9a-9h are inputted to a latch circuit 10. A synchronizing signal from the conductive brush 9g is inputted to a timer circuit 11. The timer circuit 11 starts in response to the synchronizing signal and supplies a latch signal to the latch circuit 10 after said specific unit time (e.g. 1 second). The latch circuit 10 latches the data signals from the conductive brushes 9a-9h in response to the latch signal. The data signals latched by the latch circuit 10 are converted by a decoder 12 from binary to decimal and displayed on display elements 13a and 13b as the remaining time (minute) of the tape.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a teno quantity display device. The present invention relates to a tape amount display device that displays the usage time of the tape, the remaining take delivery time, etc.

Conventional devices for this scale include, for example, Japanese Patent Application Laid-open No. 49-1, 0
Various devices are known, such as the device disclosed in Publication No. 9026, but all of them detect the rotational speed of the supply reel, calculate this detection signal in a calculation circuit according to a predetermined calculation formula, and perform this calculation. Since it is configured to display the zero amount of tape based on the output, there are drawbacks such as a complicated arithmetic circuit and an increase in the size of the apparatus.

The present invention has been made in order to eliminate the drawbacks of the conventional devices as described above, and provides a zero-quantity display device that allows for a simpler configuration and a smaller scale of the device by omitting the arithmetic section. The purpose is to capture and provide information.

In the display device according to the present invention, on the rotating body rotating in conjunction with the supply reel 1lQt+vc, there is a
7- Storing tape 0 amount information proportional to the rotation angle per predetermined unit time for each rotation angle position from the reference position, and reading and displaying the memory value t1φ of this rotating body every time the predetermined unit time elapses from the reference position. The structure is as follows.

Embodiments of the present invention will be described in detail below based on the drawings.

In Fig. 1, 1 is a cassette, 2 is a supply side reel, 3d is a take-up side reel, 4 is a reel shaft that rotates together with the supply side IJ-le 2, and 5 is fixed to the reel shaft 4. It is a rotating body that rotates as a unit. As shown in FIG. 2, on the soil surface of this rotary body 5, there is a reference line 6 indicating the reference position and a rotation angle from this reference line 6 for a predetermined unit time (for example, 1 second) at the current rotation angle. Proportional tape amount information 7 is stored by the Q-turn by the conductor. The time required for playing the remaining tape, ie, the remaining amount time t of the remaining tape, is calculated by the well-known formula shown below.

1, = υπ/ρω−πr/υρ where υ is the take 0 speed, ρ is the thickness of 7°, and γ is the reel radius.
"47.6mm/B, p = 1.6/ILm, r =
l 1 mm is used. Also, ω is the angular velocity (ra,
d/S), which in FIG. 2 represents the angle from the reference line 6. Chive remaining amount time t (minutes) calculated by the above formula
A part of the correspondence between angular velocity ω (degrees) and angular velocity ω (degrees) is shown in the table below.

2. Based on the calculation results shown in Figure 2, the remaining table time t (minutes) is displayed in a pattern as shown in Figure 2. Each binary number representation (BCI) code) is converted into a two-digit (6-bit) turn in minutes.Of these 6-bit turns, the outer 4-bit data (DO~ D3) is the minute digit, and the inner 2-bit data (D4.D5) is 10.
It corresponds to the minute digit. Further, an annular main turn 8 is formed on the innermost circumference of the rotating body 5, and the reference line 6, tape amount information 7, and annular main turn 8 are electrically connected by a thin pattern.

Eight conductive brushes 9a to 9h are provided as pinocanog means to read the stored information of the rotating body 5.

Among the eight conductive brushes 9α to 9h, brush 9 (L to 9
The six pieces f read the tape amount data 1) 0 to D5 and convert them into electrical signals, and when the plan 9g is positioned on the reference line 6, the reference position signal is derived as the synchronization signal S, and the brush 9
h is a common terminal COM which is always in contact with the annular ring 78 and applies the power supply voltage VcC.

The data signal pinocquanoved from the conductive plans 9a to 9hVc is sent to the launch circuit 1. OK, it will be done manually. A synchronizing signal from the conductive brush 9q is input to a timer circuit 1.

The timer circuit 11 starts in response to the synchronization signal and supplies a latch signal to the latch circuit 10 after the predetermined unit time (for example, 1 second). Latte circuit 10 latches data signals from conductive brushes 9a-9h in response to the latch signal. The data signal latched by the launch circuit 10 is converted from a binary number to a decimal number by a decoder 2, and then sent to a display element 2.
3a, J, 3b, the remaining time (minutes),! - is displayed.

Furthermore, as shown in Figure 3, 8r! It is also possible to set the tape amount information 7 in Fig. 2 on the same rotating body 5' (7σ, 7b), for example, by shifting it by 1.80 and converting it into a turn. According to this, the measurement cycle is halved. This means that the operating speed can be improved. In the above example,
Although the rotating body 5 is shown to be disk-shaped, it can also be drum-shaped as shown in FIG. Furthermore, the rotating body 5I does not need to be directly connected to the goreel shaft 4, and as shown in FIG. The rotation of the reel IQl+ 4 may be transmitted to the rotary body 5 by changing the speed using a, 14b, or the like.

Further, in the above embodiment, the tape amount information was read by electrical means using a conductive pattern and a conductive plan, but as shown in FIG. Transmissive photosensors arranged facing each other are m-
, an optical means in which the tape amount information pattern of the rotating body 5 is made of a through hole 17; a reflective type film in which the pattern is formed with a reflector;
The same effects as in the above embodiments can also be obtained by using optical means using L-sensor, magnetic means, electrostatic means, or the like.

Furthermore, in the above embodiment, the remaining tape amount time is displayed as the tape amount, but it is also possible to display the data usage time, etc., and the case where the uncut time is only displayed in two digits is shown, but the tape amount information・Seconds can also be displayed by making the turn more detailed.

The display element 13a displays turn data.

If 1.3b is data that can be driven directly, decoder 1
2 can be omitted, and the circuit configuration can be further simplified.

As described in ``2'', the present invention is configured so that the take 0 state can be physically read, so the arithmetic circuits used in the past are no longer required, and the circuitry is not complicated. There are no parts at all, making it possible to simplify the configuration and reduce the size of the device.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG.
3rd plan view showing the pattern shape on the rotating body in the figure.
The figure is a plan view showing another guitar shape, Figure 4 is a perspective view of the rotating body in Figure 1 and U7, which is a drum-shaped one, and Figure 5 is a perspective view of the rotating body shown in Fig. FIG. 6 is a perspective view of the driving configuration in which optical means is used as the pickup means. Explanation of symbols of main parts■...Cassette half 4・Reel shaft 5゛Rotating body 7
・Tape amount information 9cL~9b ・Conductive brush 10 ・Launch circuit 11...
Timer circuit L3c+,,13b・-Display element applicant ・Guionia Co., Ltd. agent Patent attorney Motohiko Fujiki (one other person) Figure 7, Figure 2, Figure 4, Figure 7, Figure 5' - ``Retail City'' City 7pen ((Method) % formula % 2, Patent name tape upper display equipment 3, Person who makes the amendment ('1 Which relationship Q'j revision applicant 11 1-4 Meguro, Meguro-ku, Tokyo) 1g name (
501) By'A-no'CI, (Meeting 14, Agent 〒104 I) Location: Chuo Reito Chuo 1t, RL,: 3 'I' I
'l i r+? At IH) shi:'' in the same building kugin 11
1j! 3 '1 [1) Telephone! i4:l -73G!
'I □ ;(, (9[1?,) (5, correction 1゛1 go f') 1980 111]
29E] <Shipping 11) 6, Sada) 1 pack of glue, 1g! Ming 1
111 ; lxri', -' Table 7 on page 1, Uram no uchi iF
Separate (as per attachment 1...; 1゛ [- 7, \z, 0・□ and '斗・' 0 issued Childa'2 j4jl14jl:il t
(sweat) and angular velocity IWω (degrees) are shown in the table below.

Claims (1)

[Claims] The tape rotation angle proportional to the rotation angle position jσ from the reference position is stored and rotated in conjunction with the supply side reel shaft. a rotating body; 4) means for outputting a sampling reference position signal and a tape zero amount signal;
′-J based on the date signal every j time elapses.
-- A take 0 line display device characterized by a 70-tail display device.