JPH06203531A - Recording / reproducing apparatus for recording medium cassette - Google Patents

Abstract

(57) [Abstract] [Purpose] Read recorded information to video information recorded in a recording medium cassette with a built-in memory so that it can communicate with other devices and facilitate editing and dubbing. A recording / reproducing apparatus is provided. A recording medium cassette having a built-in memory is provided with a connecting unit, and the connecting unit is connected to read out recorded information.
Then, the read record information is communicated to another device via the bus line based on the instruction of the microcomputer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium cassette of a video tape recorder (hereinafter referred to as VTR) or a video cassette recorder (hereinafter referred to as VCR) and its recording / reproducing apparatus, and more particularly, to a recording medium cassette for digital signals. The present invention relates to the recording / reproducing apparatus. Specifically, while providing various individual information regarding the recording medium cassette to the recording / reproducing device, the recording information of the recording medium cassette that can record various individual information or the recording information of the recording medium cassette that provides preset individual information is It is intended to provide a communication method and a recording / reproducing apparatus thereof having a function capable of communicating with other devices.

[0002]

2. Description of the Related Art Recording medium cassettes such as VTRs and VCRs
Various individual information about the tape cassette used for recording, such as the length of the tape, the remaining time of the tape, whether or not it is recorded, whether it is a rental video, etc., is the damage of important recorded data. It is necessary to prevent such an error, to make a video recording without error, to record the number of times of dubbing, and to prevent unauthorized use.

Therefore, such individual information is written in a predetermined portion of the tape, for example, a subcode area, and when the tape cassette is mounted on the recording / reproducing apparatus to end recording or reproduction, or when the tape cassette is VTR. And VC
When retrieving from R, the individual information is accumulated by changing the information or adding new information. Further, as a means for reading out the above-mentioned various kinds of information, a means provided with recognition holes at the left and right ends of the back surface of the cassette is used.

Here, the recognition means, for example, FIG.
As shown in FIG. 4, by forming a plurality of recognition holes c on the bottom surface b of the recording medium cassette A and at the left and right ends of the rear end thereof, the characteristics of the kind of recording medium cassette A, etc. To represent.

Items to be displayed are assigned to each of the plurality of recognition holes c. For example, the recognition hole c indicates the type of magnetic tape, the other recognition hole c indicates the thickness of the magnetic tape, etc. The display items are assigned in this way.

When this recording medium cassette A is mounted in the recording / reproducing apparatus, the insertion pin of the switch provided in the recording / reproducing apparatus corresponding to each recognition hole c is inserted into each recognition hole c. The information contained in each recognition hole c is read by. In the figure, d is a positioning hole.

Further, without using such a recognition hole, a recording device is equipped with a memory for recording the information of the recording medium cassette, for example, the type of magnetic tape, the recorded cassette, the rental cassette, etc. in advance or each time. There is also a media cassette.

In the case of the recording medium cassette equipped with this memory, it is possible to store the recording information of the image recording contents in the memory in addition to the type and characteristics of the tape described above. It is possible to quickly search the video recording contents and the like based on such recorded information.

[0009]

However, in the recording medium cassette equipped with the memory in the prior art, the dubbing of the video recording content, or the dubbing of the AV information content and the recording information such as the video recording at the same time is performed. However, even if it is possible, it is not possible to dubb only the recorded information, that is, it is not so versatile. Therefore, there has been a problem that it is extremely inconvenient for editing, dubbing, etc. of the cassette with other devices.

Therefore, there is a problem that the AV information recorded in the recording medium cassette and the record information stored in the memory can be communicated to other devices to have versatility. ing.

[0011]

In order to solve the above problems, the present invention provides a connecting means for connecting to a terminal of a recording medium cassette having a built-in memory, a means for reading out recorded information recorded in the memory, It is a recording / reproducing apparatus for a recording medium cassette, which is provided with a communication means for communicating the read recording information to another device.

Further, the communication means to the other equipment communicates via a bus line; the connecting means for connecting to the terminals of the recording medium cassette is provided at a corresponding position where the recording medium cassette is set; recording A recording / reproducing apparatus for a recording medium cassette, which reads out information and communicates with other devices via a microcomputer.

[0013]

The plurality of terminals of the recording medium cassette can be simply connected to the connecting means of the recording / reproducing apparatus to obtain the recording information of the recording medium cassette without loading the recording medium cassette and communicate with other devices. As a result, the recorded contents of the recording medium cassette can be obtained quickly and easily, the recorded information of the recording medium cassette can be searched and managed smoothly, and editing and dubbing can be easily performed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method of displaying recorded information on a recording medium cassette and a recording / reproducing apparatus thereof according to the present invention will be described in detail below with reference to the drawings.

In the recording medium cassette 1 according to the present invention, as shown in FIG. 1, a cassette case 2 has two upper and lower shells, that is, an upper shell 3 and a lower shell 4 each having a rectangular shallow dish shape. The opening surfaces are joined together in a butted state, the lid 5 is provided on the front surface, and the lid 5 has a substantially flat box shape.

The lid 5 opens and closes the front surface of the cassette case 2, and is supported on the front surface of the cassette case 2 so as to be vertically rotatable, and a mouse 6 is formed at the opened position of the lid 5. ing.

Although not shown, both ends of the magnetic tape are fixedly attached and the wound tape reels 7, 7 are rotatably housed in the cassette case 2. The tape reels 7, 7 are arranged facing insertion holes 9, 9 formed in the bottom wall 8 of the cassette case 2 so as to be separated from each other in the left and right directions.

The tape reels 7, 7 are reel hubs 1.
0, 10 and the reel hubs 10, 10 are in a state of being exposed to the outside through the insertion holes 9, 9.

The mouse 6 on the bottom wall 8
An approximately rectangular shallow recess 11 is formed on the side facing the. A plurality of (four in the illustrated embodiment) slit-shaped holes 12 extending in the front-rear direction are formed in the recess 11 so as to be aligned in the left-right direction. There are a terminal board 13 on which an IC is not mounted and an IC board 16 on which an IC is mounted on the printed circuit boards which are fitted and mounted in the recess 11.

Next, the mounting structure of the terminal substrate 13 or the IC substrate 16 will be described, where the cassette on which the terminal substrate 13 is mounted is the terminal recording medium cassette 1A and the cassette on which the IC substrate 16 is mounted is the IC recording medium cassette 1B.

As shown in FIG. 2, the terminal board 13 has a terminal group 14 and a conductor pattern 15, and its planar shape is a rectangle that fits almost exactly in the recess 11 shown in FIG. Is formed in.

The terminal group 14 is a so-called short shelf terminal 14a,
14b, 14c, 14d, and the arrangement interval of these terminals corresponds to the slit-like holes 12 formed in the recess 11 shown in FIG. In addition, these terminals 14
The a, 14b, 14c, and 14d are gold-plated to improve their durability and reliability.

The conductor pattern 15 is appropriately selected depending on the arrangement of the terminals 14a, 14b, 14c, 14d in the terminal group 14, but in the illustrated embodiment, for example, the terminals 14b and 14d are connected. Has been formed.

The terminal board 13 having such a structure is
As shown in FIG. 3, the terminal recording medium cassette 1A is fitted and fixed in a recess 11 provided in the bottom wall 8 of the cassette case 2 including the upper shell 3 and the lower shell 4 on the back side thereof. . That is, the terminal substrate 13 has the surface on which the terminal group 14 is formed on the lower side, and the terminals 14a, 14b, 14c, 1
4d is fitted into the concave portion 11 in a state of facing the slit-shaped hole 12, and is integrally fixed by an adhesive or welding means.

On the other hand, the IC substrate 16 is provided with a terminal group 17 and an IC 18 as shown in FIG. 4, and its plane shape and size are the same as the terminal substrate 13 shown in FIG.
Similarly to the above, the concave portion 11 of the bottom wall 8 of the cassette case 2
It is formed so that it fits snugly in.

The terminal group 17 is composed of short shelf terminals 17a, 17a.
b, 17c, 17d, and the terminals 17a, 17
b, 17c and 17d are formed to be aligned in the left-right direction. The arrangement interval of these terminals 17a, 17b, 17c, 17d is the slit-shaped hole 12 (see FIG. 1) of the cassette case 2.
(Refer to)). The terminal group 17 is plated with gold to improve its durability and reliability.

The IC 18 is mounted on a substrate 19 and the I
C18 and the terminal group 17 are connected by a conductor pattern. For example, the terminal 17a is the power supply terminal of the IC 18, the terminal 17b is the signal input / output terminal of the IC 18, and the terminal 1
7c is a clock terminal of IC18 and terminal 17d is IC1
8 GND terminals.

The IC substrate 16 having such a structure is
As shown in FIG. 5, the IC recording medium cassette 1B is fitted and fixed in a recess 11 provided in the bottom wall 8 of the cassette case 2 including the upper shell 3 and the lower shell 4 on the back surface side. . In this case, the surface of the IC substrate 16 on which the terminals 17 and the IC 18 are formed faces downward, and the terminals 17a, 17
b, 17c and 17d are fitted into the concave portion 11 so as to face the slit-like hole 12 and are integrally fixed by an adhesive or welding means.

In order to secure the state of fixing the terminal board 13 (or IC board 16) to the cassette case 2, a pressing rib is hung from the upper shell 3 to connect the upper and lower shells 3 and 4. When the pressing rib
3 (or IC substrate 16) may be pressed down.

Next, the terminal group 14 of the terminal board 13 on which the IC which is the detected means is not mounted, or the I on which the IC is mounted.
Recording medium cassette 1 having terminal group 17 of C board 16
A recording / reproducing apparatus equipped with A and 1B will be described.

The recording / reproducing apparatus 20, as shown in FIG.
It has a structure in which a tray 21 for mounting the recording medium cassettes 1A and 1B is provided and a communication terminal portion 22 for communicating with other recording / reproducing apparatus or editing equipment is provided at an appropriate end of the equipment. A communication cable 23 is attached to the communication terminal portion 22.
It has a structure that can be connected to other equipment by inserting the terminal of.

The tray 21 has slit-shaped holes 1 of the recording medium cassettes 1A and 1B when the recording medium cassette 1 is mounted.
The connector 24 is provided with the terminal groups 14 and 17 facing through 2. The structure of the connector 24 is such that the recording medium cassette 1 will be described later.
When connecting with A and 1B, the structure is such that it can be vertically dropped from directly above the connector 24 and connected.

That is, in order to obtain the recording information by pulling out the tray 21 of the recording / reproducing apparatus 20, the recording medium cassettes 1A and 1B are mounted with the tray 21 pulled out, and I
Recorded information in the memory of the IC substrate 16 on which C is mounted can be obtained.

Therefore, without loading the magnetic tape wound around the recording medium cassettes 1A and 1B, the connector 24 provided on the tray 21 and the terminal board 13 (or IC board 16) of the recording medium cassettes 1A and 1B are loaded. The connection state with the terminal group 14 (or 17) can be easily obtained.

Therefore, the recording information can be easily and quickly obtained by mounting the recording medium cassettes 1A and 1B one after another from the top of the tray 21 with the tray 21 pulled out. Although not shown, in order to display the recording information, the recording / reproducing device 20
The recording medium cassettes 1A and 1B can be displayed on the display panel provided together with the operation group provided in
It is also possible to obtain the recorded information in the state where it is stored in the recording / reproducing apparatus 20 while being attached to the tray 21.

Next, the structure of the connector 24 provided on the tray 21 of the recording / reproducing apparatus 20 will be described.

As shown in FIGS. 7 and 8, the connector 24 is connected to a casing 25, a detection terminal 37, a support shaft 45 for supporting the detection terminal 37 on the casing 25, and a power source and a signal connected to the casing 25. And a flexible cable 47 for transmitting.

The casing 25 is made of an insulating material such as synthetic resin, and has an arrangement recess 26 that opens upward and backward on the upper surface thereof, and an escape recess 27 at a position continuous with the front end of the arrangement recess 26 on the lower surface. Is formed, and the relief recess 27 is formed.
As a result of the formation, the eaves-shaped portion 28 is formed at a portion continuous with the front end of the arrangement recess 26.

Support walls 29, 29, 29 are formed at positions facing the eaves-shaped portion 28, and the support walls 29, 29, 2 are formed.
9 are vertically arranged side by side in the left-right direction at a position near the rear stage of the placement recess 26, and have substantially the same spacing between each of the support walls 29, 29, 29 and the left and right inner side surfaces of the rear stage of the placement recess 26. Support spaces 30, 30, 30, 30 are formed side by side in the left-right direction.

On the other hand, the eave-shaped portion 28 corresponding to the support walls 29, 29, 29 has positioning notches 31, 31,
31, 31 are formed.

A mounting piece portion 32 is provided at a position projecting forward from the central portion of the front end of the casing 25 in the left-right direction, and a mounting piece 33 is formed on the mounting piece portion 32.

A positioning piece portion 34 is provided on the side opposite to the mounting piece portion 32, and the positioning piece portion 34 is a positioning piece which projects rearward from the central portion of the rear end of the casing 25 in the left-right direction. Engagement notches 35 that open in steps are formed.

Further, it is an intermediate portion in the front-rear direction of the bottom portion of the arrangement recess 26 of the casing 25, and is located at a position on a line connecting the support spaces 30, 30, 30, 30 and the eaves-shaped portions 28 in plan view. Through holes 36, 36, 36, which penetrate vertically
36 is formed.

The detection terminal 37 is formed of a wire spring material having conductivity, and the detection terminal 37 is formed in the shape of a torsion coil spring and extends downward through the intermediate coil portions 38, 38, 38, 38. The parts 39, 39, 39, 39 and the upper piece parts 40, 40, 40, 40 extending upward are integrally formed, and the lower piece parts 39, 39, 39, 39 are provided at the tip end thereof with respect to other parts. The connection piece portions 41, 41, 41, 41 bent downward at a right angle are penetrated through the through holes 36, 36, 36, 36 of the casing 25 and connected to the flexible cable 47.

In the upper piece portions 40, 40, 40, 40, contact portions 42, 42, 42, 42 are formed by bending the tip ends of the upper portions 40, 40, 40, 40 in an inverted V shape, and the contact portions 42, 42, 42, 42 are formed. 42, 42, 42, 42 has a locking piece 4 attached to the tip extending downward from the tip of the positioning notch 31, 31, 31, 31.
3, 43, 43, 43 are formed.

The casing 25 thus formed is
The intermediate coil portions 38, 38, 38, 38 are arranged in the support spaces 30, 30, 30, 30 of the casing 25,
Connection piece portions 41, 41 of the lower piece portions 36, 36, 36, 36,
41, and the portion other than 41 is the arrangement recess 26 of the casing 25.
It is located along the inner bottom surface of the.

The upper pieces 40, 40, 40, of the detection terminal 37,
The front ends of the contact portions 42, 42, 42, 42 of 40 are positioned in the positioning notches 31, 31, 31, 31 so as to be vertically movable.

The connector 24 having the above-described structure engages the engaging notch 35 of the positioning piece 34 with the engaging piece 44 which is erected at a predetermined position of the tray 21 of the recording / reproducing apparatus 20. The screw 46 inserted from above is screwed into the attachment piece 33 of the attachment piece portion 32 to be fixed.

The flexible cable 47 is a wiring board and is connected to a circuit composed of the connector 24 and the microcomputer of the recording / reproducing apparatus 20. The conductor pattern 48 of the flexible cable 47 has connection pieces of the detection terminals 34, respectively. It is connected.

The recording medium cassettes 1A and 1B are supported by the recording / reproducing apparatus 20 in which the connector 24 having such a structure is arranged at an appropriate position of the tray 21 shown in FIG. Tape reel 7,7
The connector 24 when it comes down to the engaged position.
The upper ends of the contact portions 42, 42, 42, 42 of the detection terminal 37 of (1) come into contact with the terminal group 14 or the terminal group 17 of the recording medium cassette 1A, 1B to be connected.

At this time, the upper portion 40 of the detection terminal 37 is pressed by the descending recording medium cassette 1A, 1B.
The contact portions 42, 42, 42, 42 move forward while the terminals 40, 40, 40 bend so as to rotate downward, and the terminal group 14 of the terminal recording medium cassette 1A or the terminal group 17 of the IC recording medium cassette 1B. Contact with. In this way, the contact is held in a state of having elastic force, so to speak, so that contact failure or the like can be avoided.

Next, a structure and a judging means for automatically distinguishing the terminal recording medium cassette 1A having the terminal board 13 having the above-mentioned structure from the IC recording medium cassette 1B having the IC board 16 will be described. .

First, the terminal recording medium cassette 1A is shown in FIG.
As shown in (and FIG. 2 described above), for example, the terminal 14 in contact with the connector 24 of the recording / reproducing device 20.
A predetermined voltage is supplied from a power supply voltage 22a to a, 14b, 14c via resistors Ra, Ra, Ra, and a 3-bit signal from the terminals 14a, 14b, 14c of the terminal group 14 is sent to the microcomputer 22B. , Grounding terminal 1
4d is connected to GND.

In the above-described embodiment, the terminals 14a, 14b, 14c of the terminal group 14 of the terminal substrate 13 arranged in the terminal recording medium cassette 1A are patterned so that a predetermined voltage is supplied from the power supply voltage 22A. Has been formed, and in this example, a 3-bit signal of "HIGH, LOW, HIGH" can be obtained. In this way, the terminal 14
a, 14b, 14c and the terminal 14 connected to GND
By appropriately forming a connection pattern with d, “L
OW, LOW, LOW ”to“ HIGH, HIGH, H
It is possible to obtain 8 types of 3-bit signals up to "IGH". This is to obtain the signal of the recognition by the combination of the electrical connection states by the conductor pattern 15 instead of the generally used recognition hole. Can be

Next, the IC recording medium cassette 1B is shown in FIG.
As shown in FIG. 0 (and FIG. 4 described above), the provided IC substrate 16 includes a terminal group 17, an IC 18, and a resistor R.
It consists of and.

The terminal group 17 is a terminal for supplying a voltage from the power supply voltage 22A and transmitting / receiving data in a connected state with the connector 24 of the recording / reproducing apparatus 20. That is, the connection is such that the power supply terminal 17a is connected to the power supply terminal of the IC 18 and one end of the resistor R, and the data input / output terminal 17b is I.
It is connected to the data input / output terminal of C18, the clock terminal 17c is connected to the clock terminal of the IC 18, and the GND terminal 17d is connected to the GND terminal of the IC 18 and the other end of the resistor R.

In this way, the IC recording medium cassette 1B is
When the recording / reproducing device 20 is connected, a predetermined voltage is supplied from the power supply voltage 22A to the IC 18 so that the IC 18 can operate, and data is transmitted / received to / from the microcomputer 22B via the data input / output terminal 17b.

On the other hand, although not shown in the IC 18,
Memory and central processor unit (hereinafter C
PU) and is synchronized with the clock 22C on the recording / reproducing apparatus 20 side.
Send and receive data to and from 2B.

This memory is composed of an IC called a so-called ROM / RAM for recording and storing data, and C
It functions to record and store the data sent from the PU and output the address data designated by the CPU.

The internal structure of this memory is made up of a common ID area and a user ID area, which are not shown. In the common ID area, the type of tape,
Thickness, length, hub diameter, manufacturer name, country of origin, recording format, dubbing prohibition data, manufacturing date, etc. are recorded. The common ID area is an area that cannot be rewritten.

In the user ID area, data such as recording time, date and program can be recorded.
In addition, it is an area where data can be rewritten freely.

The main functions of the CPU are communication with the recording / reproducing apparatus 20 and communication with the internal memory. In communication with the recording / reproducing apparatus 20, one data input / output terminal 1
Data is transmitted and received using only 7b. The data communication speed has a data rate of about 1-2 MBPS,
The data communication method is a serial data communication method. The CPU also has an interface function of reading the data in the internal memory, converting the data into the serial data format, and outputting the converted data. Here, the method of communicating with the internal memory is a parallel data communication method. This is a general communication method determined by the ROM / RAM data bus to be used, and it is necessary to perform internal processing at a higher speed.

Further, the CPU operates by the clock signal input through the clock terminal 17c, and the operating speed of the CPU can be controlled by the frequency of the clock signal.
Therefore, the data transfer rate can be increased by increasing the frequency of the clock signal.

The resistor R is connected in parallel with the IC 18 in order to divide the voltage from the power supply voltage 22A supplied from the recording / reproducing device 20 through the power supply terminal 17a with the resistor R101 (see FIG. 12) described later. The voltage at the power supply terminal 17a is set to about half the power supply voltage Vcc.

For example, as shown in FIG. 11, the power supply voltage V supplied via the connector 24 of the recording / reproducing apparatus 20.
cc is set to 3V, and a resistor R10 is provided at one end of the power supply voltage Vcc.
1 is connected and the other end is connected to the terminal P1 of the connector 24. On the other hand, the terminal P4 of the connector 24 is G
It is connected to ND. The IC substrate 16 of the IC recording medium cassette 1B connected to such a recording / reproducing device 20 is
The power supply terminal 17a of the terminal group 17 and the terminal P1 of the recording / reproducing apparatus 20 are pressed into contact with each other, and are also connected to the GND terminal 17d.
And the terminal P4 are pressed and connected.

Regarding the current supplied through the power supply terminal 17a, the current I1 flows through the IC 18 and the current I2 flows through the resistor R. In this way, in order to detect that the IC 18 is attached to the substrate, the potential at the power supply terminal 17a is set to about half the power supply voltage Vcc, that is, about 1.5V. For that purpose, the resistors R and R10 are calculated by the following equation.
The value of 1 is determined.

That is, it is sufficient that (I1 + I2) × R101 = 1.5V ... I2 × R = 1.5V.

Here, the value of the current I1 is the IC1 to be used.
It is a value determined in advance by 8, for example, current I1 = 3 m
In the case of A, I2 ≧ I1 is considered for stabilization, and the current I
If it is set to flow 2 mA to 6 mA, the resistance R10
1≈167Ω, and the resistance R = 250Ω is obtained from the equation. The resistor R can be omitted when the value of the current I1 is stable with little variation with respect to the voltage of 1.5V.

In this way, the IC recording medium cassette 1B
Then, it is necessary to set the resistances R and R101 to preset values from the power supply voltage Vcc of the IC 18 and the recording / reproducing device 20.

Next, the terminal recording medium cassette 1A and the IC
The recording medium cassette 1B is automatically discriminated, and data is transmitted to and received from the microcomputer based on the discriminated state, and the contents of the recognition of the terminal recording medium cassette 1A or the memory of the IC recording medium cassette 1B is stored. It is a circuit for transmitting and receiving the recorded information. If IC
If it is determined that the recording medium cassette 1B, the IC
It is possible to read and send video information and the like from the memory mounted on the.

That is, FIG. 12 shows an example of a communication circuit 49 for reading the contents of the recognition of the terminal recording medium cassette 1A mounted in the recording / reproducing apparatus or the recording information of the IC recording medium cassette 1B. Here, the detection circuit 50 that constitutes the communication circuit 49 includes a recording medium cassette 1A, a recording medium cassette 1A, and a recording medium cassette 1A via a connector 24 provided in the recording / reproducing apparatus 20, for example.
It is a circuit that automatically determines whether or not an IC is mounted on 1B.

As shown in FIG. 12, the communication circuit 49 includes a connector 24, a detection circuit 50, and a resistor R10.
1, R102, R103, a switch 57, an interface 59, and a microcomputer 66.

Regarding the connection state of the communication circuit 49, first, the power supply voltage Vcc (3V) is connected to one ends of the resistors R1 and R3 of the detection circuit 50, one ends of the resistors R101, R102 and R103, and the collector side of the switch 57. .

The connector 24 is a group of terminals 17 of the IC board 16 mounted on the so-called IC recording medium cassette 1B.
Alternatively, the terminals P1, P2, P3 that come into contact with the terminal group 14 of the terminal substrate 13 mounted on the terminal recording medium cassette 1A.
It is composed of P4. The connector 24 corresponds to the connector 24 described with reference to FIGS. 7 and 8.

The terminal P1 of the connector 24 has a resistor R10.
1, the other end of the switch 57, the emitter side of the switch 57, the plus side input terminals of the comparators 51 and 52, and the microcomputer 6
6 and a recognition terminal RCG1.

The terminal P2 of the connector 24 has a resistor R10.
It is connected to the other end of 2, the output terminal of the buffer 61 of the interface 59, the input terminal of the buffer 62, and the recognition terminal RCG2 of the microcomputer 66.

The terminal P3 of the connector 24 has a resistor R10.
3, the output terminal of the buffer 63 of the interface 59, and the recognition terminal RCG3 of the microcomputer 66.
Connected to.

The terminal P4 of the connector 24 is grounded to GND.

The detection circuit 50 includes comparators 51 and 52.
And resistors R1, R2, R3 and R4, Schmitt triggers 53 and 54, an inverter 55 and a NAND gate 56.

The non-inverting input terminal (hereinafter referred to as the positive side input terminal) of the comparator 51 is connected to the terminal P1 of the connector 24 and the positive side input terminal of the comparator 52, and the inverting input terminal (hereinafter referred to as the negative side input terminal). say)
Is connected to the other end of the resistor R1 and one end of the resistor R2, and its output terminal is connected to the input terminal of the Schmitt trigger 53. The other end of the resistor R2 is connected to GND.

The positive input terminal of the comparator 52 is
Connected to the terminal P1 of the connector 24, the negative input terminal is connected to the other end of the resistor R3 and one end of the resistor R4,
Its output terminal is connected to the input terminal of the Schmitt trigger 54. The other end of the resistor R4 is connected to GND. Here, the resistors R1 and R4 and the resistors R2 and R3 are set to have the same resistance value. Also, for example, R1 / R2
The ratio is set to 1/3.

The Schmitt triggers 53 and 54 and the inverter 55 are composed of a single input / output terminal.

That is, the input terminal of the Schmitt trigger 53 is connected to the output terminal of the comparator 51, and the output terminal thereof is connected to the input terminal of the inverter 55.

The input terminal of the Schmitt trigger 54 is connected to the output terminal of the comparator 52, and the output terminal thereof is connected to the other input terminal of the NAND gate 56.

The input terminal of the inverter 55 is connected to the output terminal of the Schmitt trigger 53, and the output terminal thereof is connected to one input terminal of the NAND gate 56.

The NAND gate 56 has two input terminals and one
A gate composed of a plurality of output terminals, one input terminal is connected to the output terminal of the inverter 55, the other input terminal is connected to the output terminal of the Schmitt trigger 54, and the output terminal is an IC of the microcomputer 66. It is connected to the memory detection terminal Mdet.

The switch 57 is a so-called switching element. The power supply voltage Vcc is connected to the collector side, the bus control terminal Bcont of the microcomputer 66 is connected to the base side, and the connector 24 is connected to the emitter side.
Is connected to the terminal P1.

The interface 59 has an OR gate 60.
And buffers 61, 62 and 63, and an interface circuit 64.

The OR gate 60 is a gate composed of two input terminals and one output terminal, one input terminal of which is a bus control terminal Bcon of the microcomputer 66.
and the other input terminal is connected to the bus control terminal Bcont of the interface circuit 64,
Its output terminal is connected to the enable terminal of the buffer 61.

The buffer 61 has an enable terminal, the input terminal of which is connected to the data out terminal Dout of the interface circuit 64, the output terminal of which is connected to the terminal P2 of the connector 24, and the enable terminal of which is the OR gate 60. Is connected to the output terminal of.

The input terminal of the buffer 62 is the buffer 61
Of the connector 24 and the terminal P2 of the connector 24, and the output terminal thereof is connected to the data-in terminal Din of the interface circuit 64.

The buffer 63 has an enable terminal,
Its input terminal is connected to the clock terminal CK of the interface circuit 64, and its output terminal is the terminal P3 of the connector 24 and the recognition terminal RCG of the microcomputer 66.
3 and its enable terminal is connected to the bus control terminal Bcont of the microcomputer 66.

The bus control terminal Bcont of the interface circuit 64 is the other input terminal of the OR gate 60, the data out terminal Dout is the input terminal of the buffer 61, the data in terminal Din is the output terminal of the buffer 62, and the clock terminal CK. Are connected to the input terminals of the buffer 63, respectively. The interface circuit 64 is connected to the microcomputer 66 by an internal bus 65. The internal bus 65 is composed of serial data in Si, serial data out So, chip select CE and clock CK.

The microcomputer 66 is a so-called microcomputer, and its terminal is a bus control terminal Bco.
nt, an IC memory detection terminal Mdet, recognition terminals RCG1, RCG2, RCG3, and a data communication terminal Dcom.

The bus control terminal Bcont is connected to the base side of the switch 57, one input terminal of the OR gate 60 of the interface 59, and the enable terminal of the buffer 63.

The IC memory detection terminal Mdet is an output terminal of the NAND gate 56 of the detection circuit 50, the recognition terminal RCG1 is a terminal P1 of the connector 24, the recognition terminal RCG2 is a terminal P2 of the connector 24, and the recognition terminal RCG3 is a connector 24. Terminal P3
Connected to each.

The recognition terminal RCG1 is the terminal P1.
Further, the recognition RCG2 is connected to the terminal P2, and the recognition RCG3 is connected to the terminal P3.

Data communication terminal Dcom
Is a terminal for communicating record information between other devices or recording / reproducing apparatuses, and is connected to the internal bus 68 for connection of the control drive unit 67 of the recording / reproducing apparatus 20. The control drive unit 67 will be described later.

The terminal recording medium cassette 1A is installed in the recording / reproducing apparatus 20 equipped with the communication circuit 49 having such a configuration.
Alternatively, a communication method performed by mounting the IC recording medium cassette 1B will be described below.

The recording medium cassette 1 is added to the recording / reproducing apparatus 20.
When A and 1B are mounted, the communication circuit 49 first determines whether or not an IC is mounted on the recording medium cassettes 1A and 1B. This determination is performed by reading the voltage value as described with reference to FIG. This operation is performed by the connector 2 provided in the recording / reproducing device 20.
4 (corresponding to the connector 24 in FIG. 12) and the terminal group 14 (or 17) shown in FIGS. 9 and 10 provided in the recording medium cassettes 1A and 1B are completed simultaneously.

That is, in the case of the terminal recording medium cassette 1A having the terminal board 13, the voltage at the terminal P1 of the connector 24 of the communication circuit 49 becomes either 0V or 3V, and the IC board 16 In the case of the IC recording medium cassette 1B provided with, the value is about half (1.5V) of the power supply voltage Vcc (3V). Terminal P of this connector 24
The voltage value of 1 is the resistance R and the resistance R described in FIG.
It is a value determined by 101.

Next, the communication method will be described separately for (1) the case of the terminal recording medium cassette 1A not having the IC mounted therein and (2) the case of the IC recording medium cassette 1B having the IC mounted therein. To do. (1) Terminal recording medium cassette 1A without IC mounted
in the case of. The communication circuit 49 detects that the terminal recording medium cassette 1A is attached to the recording / reproducing apparatus. That is, the recognition output terminal 14a of the terminal board 13 shown in FIG.
The terminal P1 of the connector 24 of the communication circuit 49 shown by 2
The recognition output terminal 14b is connected to the terminal P2 of the connector 24, the recognition output terminal 14c is connected to the terminal P3 of the connector 24, and the GND terminal 14d is connected to the connector 2
4 terminals P4 are pressed and connected to each other.

At this time, the recognition output terminal 14a
However, since it is in the open state and the switch 57 is in the off state, the potential of the terminal P1 of the connector 24 becomes the same potential as the power supply voltage Vcc (3 V), and if the recognition output terminal 14a is connected to GND. For example, the potential of the terminal P1 of the connector 24 becomes about 0V. And
The voltage value of 3V or 0V at the terminal P1 of the connector 24 is supplied to the positive input terminals of the comparators 51 and 52. Then, the comparator 51 operates when the potential of the positive side input terminal is 3V and becomes a high level signal at the output terminal, and the comparator 52 operates when the potential of the positive side input terminal is 3V and operates at the output terminal. It becomes a high level signal. However, in this state, NAND gate 5
Input condition 6 is not satisfied.

On the other hand, when the potentials of the positive input terminals of the comparators 51 and 52 are about 0 V, a low level signal is output from the output terminal of the comparator 51, and a low level signal is also output from the output terminal of the comparator 52. Signal is output. However, even in this state, the input condition of the NAND gate 56 is not satisfied.

Here, the condition that the input conditions of the NAND gate 56 by the comparator 51 and the comparator 52 are satisfied is when the signal of the output terminal of the comparator 51 is low level and the signal of the output terminal of the comparator 52 is high level. That is, the power supply voltage Vcc is applied to the negative input terminal.
And resistors R1, R2, R3, R4 (R1 = R4, R2 = R
3), the divided voltage value is input, the comparator 51 does not operate when the potential of the terminal P1 of the connector 24 is about 1.5 V, and the resistance value is set so that the comparator 52 operates. There is. Therefore, when the potential of the terminal P1 of the connector 24 is about 3 V or about 0 V, the condition of the input terminal of the NAND gate 56 is not satisfied and the signal of the output terminal remains at the high level. A high level signal is input to the memory detection terminal Mdet.

When the signal at the IC memory detection terminal Mdet is at the high level, the signal at the bus control terminal Bcont of the microcomputer 66 remains at the low level,
Since the operation of the circuit of the interface 59 is prohibited and the switch 57 is not turned on, the power supply voltage Vcc is supplied to the terminal P1 of the connector 24 via the resistor R101. Instead, the microcomputer 66 sends the signal from the recognition output terminal 17a of the terminal board 16 to the recognition terminal RCG1 of the microcomputer 66 connected through the terminal P1 of the connector 24 to the recognition output terminal 17a.
the signal of b to the recognition terminal RCG2 of the microcomputer 66 connected through the terminal P2 of the connector 24,
Connect the signal from the recognition output terminal 17c to the connector 24
The recording medium cassettes 1A and 1B are identified by inputting them to the recognition terminal RCG3 of the microcomputer 66 connected via the terminal P3. That is, by inputting this recognition signal, it is possible to obtain information such as the terminal recording medium cassette 1A and the type and thickness of the magnetic tape of the terminal recording medium cassette 1A.

That is, by inputting this recognition signal, information such as the type and thickness of the magnetic tape of the recording medium cassettes 1A and 1B can be obtained.

(2) In the case of the IC recording medium cassette 1B equipped with an IC. The communication circuit 49 shown in FIG. 12 includes an IC substrate 16
It is detected that the C recording medium cassette 1B is attached to the recording / reproducing apparatus. That is, the power supply terminal 17 a of the IC substrate 16 shown in FIG. 10 is the terminal P of the connector 24 of the communication circuit 49.
1, the data input / output terminal 17b is connected to the terminal P2 of the connector 24, the clock terminal 17c is connected to the terminal P3 of the connector 24, and the GND terminal 17d is connected to the terminal P4 of the connector 24, respectively.

Here, the power supply terminal 17a is the same as that shown in FIG.
As described above, the GND is connected via the IC 18 and the resistor R.
Connected to the terminal 17d connected to the communication circuit 4
9 is connected to the IC board 16 such that a voltage value of about 1.5 V (about half the power supply voltage Vcc) is generated at the terminal P1 of the connector 24 via the resistor R101.
It has a preset resistance value together with the resistance R.

Therefore, when the communication circuit 49 and the IC recording medium cassette 1B are connected, the terminal P of the connector 24 is connected.
A voltage of about 1.5 V is generated at 1 and the voltage value of this voltage 1.5 V is supplied to the plus side input terminals of the comparators 51 and 52 of the detection circuit 50, and the output terminal of the comparator 51 has a low level signal. A high level signal is output to the output terminal of the comparator 52, the input condition of the NAND gate 56 is satisfied, and the signal of the IC memory detection terminal Mdet of the microcomputer 66 becomes low level.

The microcomputer 66 uses the IC memory detection terminal Md.
When the signal of et becomes low level, a high level signal is output from the bus control terminal Bcont, the switch 57 is turned on, and the power supply voltage Vcc (3V) is supplied to the terminal P1 of the connector 24.

By supplying a voltage of about 3 V to the terminal P1 of the connector 24, the power source voltage Vcc (3
V) is supplied and the IC 18 is ready for operation.

At the same time, when the signal at the bus control terminal Bcont of the microcomputer 66 goes high, the buffer 61 is passed through the OR gate 60 of the interface 59.
Then, the clock signal can be sent from the clock terminal CK of the interface circuit 64 to the terminal P3 of the connector 24 via the buffer 63, by making the buffer 63 capable of inputting and outputting. The clock signal sent to the terminal P3 is sent to the IC 18 of the IC board 16
Data can be transmitted / received between the recording medium cassette 1B and the recording / reproducing apparatus.

That is, when the microcomputer 66 of the communication circuit 49 gives an instruction to send data to the IC 18 of the IC substrate 16 of the IC recording medium cassette 1B via, for example, the interface 59, this data is sent to the terminal P2 of the connector 24. It is sent in synchronism with the above-mentioned clock signal.

When data is to be stored in the IC 18 of the IC substrate 16 of the IC recording medium cassette 1B, the microcomputer 66 of the communication circuit 49 sends a command to execute the storage via the interface 59. Data sent via the terminal P2 of the connector 24 can be stored in synchronization with the clock signal.

Therefore, when power is supplied to the IC 18 during reproduction of the IC recording medium cassette 1B, the recorded information in the memory of the IC 18 can be read appropriately in synchronization with the clock signal. If the recording medium cassette 1B is already recorded in the memory of the IC 18 of the IC substrate 16, the reading of the data recorded in the memory of the IC 18 is started, and the recording medium cassette 1 is read by the data.
It can be determined that B is, for example, a rental cassette or a recorded cassette.

If the cassette is an unrecorded cassette, the length of the cassette tape, the remaining time, etc. can be determined by reading the data from the memory of the IC 18.
The currently recorded total time, remaining time, recorded date and time, etc. can be recorded according to a preset order.

In this way, the microcomputer 66 which obtains and stores the record information from the recording medium cassettes 1A and 1B mounted on the recording / reproducing apparatus 20 has the communication terminal unit 76 via the internal bus according to the instruction of the control drive unit 67. (Corresponding to 22 in FIG. 6)
Can communicate with other devices, and can also receive record information from other devices and store it in the microcomputer 66 for communication. This will be described below with reference to FIG.

FIG. 13 shows how two recording / reproducing devices 20 (main devices A and B) are connected by a communication cable 23, each of which is provided with the microcomputer 66 shown in FIG. It has a configuration including an identification circuit 49 and a control drive unit 67. Since both are embodiments having the same configuration, they will be described with the same reference numerals and the description of the identification circuit 49 will be omitted because it has been described with reference to FIG.

The control drive unit 67 includes a tuner / timer 69, a signal processing microcomputer 70, a mechanical control unit 71, and an internal computer 68 for connection, which is a bus line.
The mode controller 72 and the interface 73 are connected to each other, and the connection internal bus 68 is connected to the identification circuit 49.
Is connected to the terminal Dcom of the microcomputer 66.

The tuner / timer 69 performs time management such as selecting a signal to be transmitted as appropriate, designating a circuit group capable of tuning to the carrier frequency, and designating a tuning time.

The signal processing microcomputer 70 processes a signal selected by the tuner / timer 69, and has a structure including a peripheral IC 74 for performing a plurality of specific processes and an AV information interface 79. The AV information interface 79 is adapted to be connected to other connected devices (main devices A and B in the embodiment), and is dedicated to transmitting and receiving AV information such as video signals and audio signals for dubbing. It is connected to the AV information cable 78. In the embodiment, the cable connected to the AV information interface 79 is the communication cable 23.
(See FIG. 6).

The mechanical control unit 71 includes the recording medium cassette 1A,
The tape 1B is used for controlling mechanical movement such as loading, and is connected to the mechanical deck 75.

The mode controller 72 is used for the recording medium cassette 1.
It controls modes such as A, 1B recording, reproduction, and fast forward.

The recording information interface 73 is for dubbing the recording information stored in the microcomputer 66 through the communication terminal section 76, and is connected to other devices through a dedicated cable incorporated in the communication cable 23. To be done.

The recording information of the recording medium cassettes 1A and 1B and the AV information consisting of audio / video signals accumulated in the microcomputer 66 of the discriminating circuit 49 thus constructed are connected via the control drive section 67. It is possible to send and receive with other devices (main device A, B in the embodiment).

That is, the microcomputer 66 of the identification circuit 49 reads the recorded information of the mounted recording medium cassettes 1A and 1B, and when sending the read information to another device, the internal bus 68 is used. Send and receive. The internal bus 68 for connection is a so-called communication bus, and is SCK / Si /
Data is transmitted and received by a control signal such as So.

In the case of transmission, the microcomputer 66 uses the terminal Dco
The recording information accumulated in the memory together with the control signal SCK / Si / So is sent from m to the internal bus 68 for connection.
Then, the internal bus 68 for connection receives the control signal SCK / Si / S.
o is analyzed, and the record information accumulated in the memory is sent to the record information interface 73. Then, the data is sent to another device (main device A or B) via the communication terminal unit 76 and the recording information cable 77 incorporated in the communication cable 23.

On the other hand, in the case of reception, as in the case of transmission, the control signal SCK / Si / So is transmitted via the communication information section 76 and the recording information interface 73. The control signal SCK / Si / So can be analyzed by the internal bus 68 for connection, and the recording information sent from another device (main device A or B) can be accepted.

By using the recording information stored in the memory thus received, it is possible to greatly improve the operability at the time of editing and dubbing the recording medium cassettes 1A and 1B mounted. Become.

Therefore, if the IC recording medium cassette 1B is not limited to editing the video recording contents of the recording medium cassettes 1A and 1B, the recording information accumulated in the memory of the IC can be easily edited and dubbed. You will be able to do it.

As for AV information consisting of an audio signal and a video signal, the signal processing microcomputer 70 decodes the control signal SCK / Si / So sent to the internal bus 68 for connection, and the AV information interface 79 is used. AV information can be dubbed by being transmitted and received between the main devices A and B connected to the AV information cable 78.

[0133]

As described above, in the recording / reproducing apparatus for a recording medium cassette according to the present invention, a plurality of terminals of the recording medium cassette and the connector of the recording / reproducing apparatus are simply connected to each other to make a recording medium cassette. Recording information such as video recording contents, type of magnetic tape, thickness, length, etc. without distinguishing the magnetic tape wound around the disk, discrimination of recorded cassettes, rental cassettes, etc. Since it can be easily communicated with other devices, there is an excellent effect that editing and dubbing of the recording medium cassette can be performed extremely quickly and easily.

Further, by using the internal bus in the recording / reproducing apparatus for communication, there is an excellent effect that the structure for transmitting / receiving information in cooperation with other devices can be simplified.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a back surface side of a recording medium cassette used in the present invention.

FIG. 2 is a perspective view showing a terminal board which is the detection means.

FIG. 3 is an enlarged cross-sectional view of a main part of a terminal board arranged in the cassette case.

FIG. 4 is a perspective view showing an IC substrate which is the detection means.

FIG. 5 is an enlarged cross-sectional view showing a main part of an IC substrate arranged in the cassette case.

FIG. 6 is an explanatory diagram showing a state in which a tray provided in the recording / reproducing apparatus is pulled out.

FIG. 7 is a perspective view of a connector, which is a connecting unit of the recording medium cassette used in the present invention.

8 is a cross-sectional view taken along the vertical direction of the connector shown in FIG.

FIG. 9 is a schematic circuit diagram of a terminal board incorporated in a recording medium cassette and its circuit board.

FIG. 10 is a schematic circuit diagram of an IC substrate incorporated in a recording medium cassette and its circuit diagram.

FIG. 11 is a schematic circuit diagram regarding setting of a voltage value when the recording medium cassette and the recording / reproducing apparatus are connected.

FIG. 12 is an identification circuit diagram of the recording / reproducing apparatus used in the present invention.

FIG. 13 is a block diagram showing a connection state of a recording / reproducing apparatus provided with a communication unit according to the present invention.

FIG. 14 shows the rear side of the cassette showing the recognition holes in the prior art.

[Explanation of symbols]

1 Recording Medium Cassette 1A Terminal Recording Medium Cassette 1B IC Recording Medium Cassette 2 Cassette Case 3 Upper Shell 4 Lower Shell 5 Lid 6 Mouse 7 Tape Reel 8 Bottom Wall 9 Insertion Hole 10 Reel Hub 11 Recess 12 Slit Hole 13 Terminal Board 14 Terminal Group 14a, 14b, 14c, 14d Terminal 15 Conductor pattern 16 IC board 17 Terminal group 17a, 17b, 17c, 17d Terminal 18 IC 19 Board 20 Recording / reproducing device 21 Tray 22 Communication terminal part 23 Communication cable 24 Connector 25 Casing 26 Recess 27 Relief Recessed portion 28 Eave-shaped portion 29 Support wall 30 Support space 31 Positioning notch portion 32 Through hole 33 Mounting piece 34 Positioning piece portion 35 Engagement notch portion 36 Through hole 37 Detection terminal 38 Intermediate coil portion 39 Lower piece portion 40 Upper piece portion 41 Connection One piece 4 Contact part 43 Engagement piece 44 Engagement piece 45 Support shaft 46 Screw 47 Flexible cable 48 Conductor pattern 49 Communication circuit 50 Detection circuit 51 Comparator 52 Comparator 53 Schmitt trigger 54 Schmidt trigger 55 Inverter 56 Nand gate 57 Switch 59 Interface 60 OR gate 61, 62 , 63 buffer 64 interface circuit 66 microcomputer 67 control drive unit 68 connection internal bus 69 tuner / timer 70 signal processing microcomputer 71 mechanical controller 72 mode controller 73 interface 74 peripheral IC 75 mechanical deck 76 communication terminal 77 cable 78 cable 79 interface Mdet , Bcont, RGC1, RGC2, RGC
3, Dcom terminals Bcont, Dout, Din, CK, Dcom terminals P1 to P4 terminals

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location // G11B 33/06 Z

Claims (4)

[Claims] 1. A connection means for connecting to a terminal of a recording medium cassette having a built-in memory, a means for reading record information recorded in the memory, and a communication means for communicating the read record information to another device. A recording / reproducing apparatus for a recording medium cassette, which is provided. 2. The recording / reproducing apparatus for a recording medium cassette according to claim 1, wherein the communication means to another device communicates via a bus line. 3. The recording / reproducing apparatus for a recording medium cassette according to claim 1, wherein the connecting means for connecting to the terminal of the recording medium cassette is provided at a corresponding position where the recording medium cassette is set. . 4. The recording / reproducing apparatus for a recording medium cassette according to claim 1, 2 or 3, wherein the recording information is read out and the communication means for communicating with other equipment is performed via a microcomputer.