JPS60253079A - External index memory device - Google Patents

Abstract

PURPOSE:To obtain a memory device of high performance and low cost by executing the recording and readout of index information of an external index memory by an exclusive head provided in a recorder of a video tape, etc., in a tape recording and reproducing device. CONSTITUTION:A magnetic material adhering adhesive tape (hereinafter abbreviated as IM) 5 which has applied a magnetic material to one surface used as an index memory and has applied a pressure sensitive adhesive to the other surface is stuck to the side face of a cassette tape 1. The cassette tape 1 is slid and installed in the direction as indicated with an arrow 8, and when it is sliding, the IM5 contacts a fixed head 6 and slides, therefore, recording and readout of the IM5 are executed. As for the information contents of the IM5, those which are like a table of contents of the tape contents, an absolute address of the tape, etc. are given. Also, a system for recording one picture by compressing the information can also be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a technology for adding an index function to a tape recording/reproducing apparatus (hereinafter abbreviated as TR) using a half-cassette tape.

[Background of the invention]

As an example of TR, home use (e.g. VH8 system) v'PR
Show about. A conventional method for adding an index function to V Tl (as shown in FIG. 1, for example) sets a period 2 in which certain index information is recorded in the recordable portion at the beginning of the cassette tape 1. 7,
A device is being considered that can be recorded and read in the same way as normal signals. The number 4 indicates the third period rA of the image communication following the index information recording period 1. With this method, each time a cassette tape is loaded into the V'I''R, it is necessary to rewind it at the beginning of the tape in order to read the index information, and each time the cassette tape is removed, it is rewound to the beginning of the tape and the index information is read. must be recorded.For this reason, Kana 5! Totebu must be installed.

There were drawbacks such as a long time required for removal.

In addition, there is a method in which a semiconductor storage element is built into the cassette half, but application of the existing cassette tape'\ is difficult as it requires modification of the cassette.

Due to the nature of the index function, one note information can be recorded and stored quickly, making it very easy to use. For this purpose, it is necessary to record the Intex information in a part other than the cassette, but there is a condition in the standard that modification of the cassette half must be avoided.

[Purpose of the invention]

8) 10 The purpose of this invention is to eliminate the drawbacks of the above-mentioned conventional technology and to use an external index memory that can use the index information of signals recorded on tape at high performance and low cost without any modification to existing cassette halves. We are here to provide you with the equipment.

[Summary of the invention]

In order to achieve this object, the present invention applies an adhesive tape coated with a magnetic material, which is coated with an octamer on one side and coated with an adhesive on the other side, to the surface of a cassette half such as a video tape. The present invention is characterized in that an external index memory and a dedicated head provided in a recorder such as a video tape are used to record and read out index information in the external index memory.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a perspective view showing an embodiment of an external index memory device according to the present invention, in which 1 is a cassette half, and parts corresponding to those in FIG. 1 are given the same reference numerals.

Hereinafter, the case of VTR will be explained in detail using the present invention as an example of 1"R. The difference from the previous example shown in FIG. 1 of an embodiment of the present invention shown in FIG. This year, we applied a magnetic material to one side of the cassette half 1, which will be used as an index memory, and applied an adhesive to the other side.
11 digits of magnetic adhesive tape (hereinafter abbreviated as IM) 5 was applied. If this I M 5 is pasted on the force-strength throat half 1, it can be used even with the Chief Kachinoto that exists in μs without changing the Kasenotono-no or the Tefu Formanoto.

Next, a method for reading and reading the contents of 1M5 pasted on cassette 71 will be described. As a first embodiment, FIG. 6 shows a case where a dedicated fixed head 6 is used. FIG. 6 shows a tape cassette loading method called the front loading method, in which the cassette tape 1 is loaded by sliding it in the direction of arrow 8.
During this sliding, since the 1M5 contacts and slides on the fixed throat 6, recording and reading of the IM5 is performed. Reference numeral 7 indicates a VTR. The fourth example is the second example.
The figure shows a case where the index memory dedicated head 6 is a movable head. In this embodiment, the dedicated head 6
By moving I Mb soil in the direction of arrow 9,
Records of IMs.

Reading is performed.

The information contents of IMs include the table of contents of the tape, the absolute address of the tape, and the like. Also, 1ii! i
A method of compressing and recording information on one side is also possible.

Memory for Intex, i.e. IM5RJ, is a carefully selected method in which adhesive tape with magnetic material is pasted on the surface of Casenote-7, and recording and reading are performed using a dedicated magnetic head. It is possible to easily add an index function to existing cassette tapes.Furthermore, as shown in Figure 5, when the cassette tape is slid and inserted, it is possible to record on the IM and By adopting a reading method, new changes to the mechanical parts can be kept to a minimum.

According to the embodiment described above, it is possible to easily add an index function, which is a problem in tape recording systems, without modifying a conventional cassette tape by using 1M. Further, in the case of a VTR, by taking advantage of the characteristics of the cassette tape mounting system, it can be applied without requiring any changes to the mechanical part of the main body by providing one fixed head.

[Effect of the invention J As explained above, according to the present invention, it is possible to easily and inexpensively add an index function in a tape recording system without changing or modifying a cassette tape, and it is possible to add an index function to a tape recording system easily and at low cost. By utilizing this method, the usage of the tape recording system will be expanded and it will become more mobile (4), and an external index memory device with excellent functions can be provided without the drawbacks of the above-mentioned conventional technology.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional example for adding an index function in which an index information recording period is provided at the beginning of a tape in a VTR, and FIG. 2 is a perspective view showing an embodiment of external index memory recording according to the present invention. , FIG. 5 is a perspective view illustrating a dedicated head used for index memory recording and reading in the present invention, and FIG. 4 is a perspective view illustrating another type of dedicated head. 1 Cassette half, stB adhesive tape with pot body IM), 6... Dedicated head. 1. - Go, ゝ＼ ＼ノRepresentative Patent Attorney Akio Takahashi / Figure 1 Figure 2 l Figure 4 51

Claims (1)

[Claims] A magnetic adhesive tape with a magnetic material coated on one side and an adhesive coated on the other side is pasted on the surface of a cassette half such as a video tape, etc. to create an external index memory, and it is installed inside a recorder such as a video tape. An external index memory device characterized in that a dedicated head is used to record and read index information in the external index memory.