JPS63124291A - Pcm recorder - Google Patents

Abstract

PURPOSE:To confirm the traveling state of a tape even if it can not be seen with eyes by displaying a time code when the time code is recorded, and displaying a numerical value corresponding to the rotating state of reel mount when the time code is not recorded. CONSTITUTION:A subcode decoder 8 to decode a subcode, a time code detecting means 9 to detect whether the time code exists in the decoded subcode or not, a detecting means 11 to detect the rotation of the reel mount, a counting means 12 to generate the numerical value corresponding to the number of rotations, and a displaying means 14 controlled, through the use of the time code detecting means 9, so as to display a recorded time in the tape when the time code exists in the subcode, and to display the numerical value corresponding to the number of the rotations of the reel mount, i.e., the output signal of the counting means 12, when the time code does not exist in the subcode, are provided. Then, if the time code is recorded, it displays the time code, while if the time code is not recorded, it displays the numerical value corresponding to the rotating state of the reel mount. Thus, even when it can not be seen with eyes, the traveling state of the tape can be confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for reproducing a PCM audio signal and subcodes related thereto, and in particular, the present invention relates to a device for reproducing a PCM audio signal and subcodes related thereto, and in particular, the present invention is provided with a display section for a time code recorded in the subcodes. PC
This relates to an M recorder.

BACKGROUND OF THE INVENTION In recent years, PCM recorders have been put into practical use as consumer devices that can record and play back audio signals and related subcodes, such as program numbers and time codes, on tape. This is very useful for knowing the amount of time.

Conventional PCM recorders can display the time code on a display device such as a time counter if the time code is recorded, but if the time code is not recorded, the display device cannot obtain the information to be displayed. It was configured so that nothing could be displayed.

Problems to be Solved by the Invention In such conventional PCM recorders, if no time code is recorded, nothing is displayed on the display device. The problem was that it was difficult to distinguish.

The present invention solves the above conventional problems, and is a display device that displays a time code when the time code is recorded, and displays a numerical value corresponding to the rotation of the reel stand when the time code is not recorded. The present invention provides a PCM tape recorder equipped with the following.

Means for Solving the Problems In order to solve the above problems, the PCM recorder of the present invention includes a subcode decoder that decodes subcodes, and a timecode detector that detects whether or not there is a timecode in the decoded subcode. a detection means for detecting the rotation of the reel stand, a counting means for generating a numerical value corresponding to the number of rotations, and a time code detection means for detecting the time recorded on the tape if the subcode includes a time code. The present invention has a display means that is controlled to display a numerical value corresponding to the number of rotations of the reel stand, which is an output signal of the counting means, when there is no time code in the subcode.

The present invention has the above-described configuration, and includes a display device that displays a time code when the time code is recorded, and displays a numerical value corresponding to the rotational state of the reel stand when the time code is not recorded. Therefore, even when the tape is stored inside the tape recorder main body and the tape itself, the tape take-up reel stand, and the tape supply reel stand are not visible to the user, the running state of the tape can be checked.

Embodiment Hereinafter, a PCM recorder according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of essential parts showing an embodiment of a PCM recorder according to the present invention. In FIG. 1, 1 is a magnetic tape housed in a cassette, 2 is a rotating head attached to a rotating cylinder, and extracts a PCM signal by scanning a track formed during recording. 3 is a playback amplifier that amplifies the output signal of the rotary head 2; 4 is a switcher that divides the playback signal of the playback amplifier 3 into PCM audio data and subcode; and 6 performs error correction processing on the PCM audio data. It is a PCM decoder,
6 is a DA converter that converts a digital signal, which is an output signal of the PCM decoder, into an analog signal, and 7 is an output terminal for the analog signal. 8 is the switcher 4
decode the subcode, which is another output signal of
When the time code is recorded on the magnetic tape 1, it is a subcode decoder that obtains the time code, and 9 is a time code detection means that determines whether or not there is a time code in the output signal of the subcode decoder 8; It usually consists of a microcomputer that decodes subcodes and a microcomputer that controls the system. 1o is a reel stand for winding the magnetic tape 1, and 11 is a reel stand 1o.
This is a rotation detecting means for detecting the rotation of the reel, and is composed of, for example, a magnet attached to the reel stand 1 and a Hall element.

Reference numeral 12 denotes a counting means for counting pulse signals obtained from the rotation detecting means 11. Reference numeral 13 denotes a switch section for selecting the output signal of the sub-code decoder 8 or the output signal of the counting means 12, and the selection is controlled by the output signal of the time code detecting means 9. 14 is the switch section 1
This is a display means for displaying the output signal of No. 3, and includes a fluorescent display tube, an LCD, an LED, or the like.

The operation of the PCM recorder configured as described above will be explained below with reference to FIGS. 1, 2, and 3.

First, if a time code such as the absolute time from the beginning of the tape or the program time for each program is recorded as a subcode on the magnetic tape 1, during playback, the playback signal read from the magnetic tape 1 by the rotating head filter is It is amplified by the reproduction amplifier 3, inputted to the switcher 4, and sent to the PC.
It is separated into M audio data and subcode. PCM
The audio data undergoes data error detection, correction, and correction by the PCM decoder 5, is converted into an analog signal by the DA converter, and is output from the output terminal 7. Further, the subcode outputted from the switcher 4 is decoded by a subcode decoder 8 into data such as time code and program code, and the time code therein is inputted to the switch section 13 and the time code detection means 9. Therefore, the switch section 13 selects the time code and outputs it to the display means 14. As a result, time information as shown in FIG. 2 is displayed on the display means 14, so that the PCM
The user of the recorder can know not only the time information of the tape but also the running direction and running state of the tape by the increase/decrease and change speed of the time display.

Next, if no time code is recorded on the magnetic tape 1, the subcode decoder 8 does not output the time code, so the output signal of the counting means 12 is displayed on the display means 14 via the switch section 13. Therefore, in the display means 14, for example, when the magnetic tape 1 is running at a constant speed on the forward side, a numerical value of several digits as shown in FIG. If the vehicle is traveling at a higher speed than the above-mentioned speed, the numerical value will change to become larger, and if the vehicle is traveling at a high speed toward the rewind side, the numerical value will change to become smaller at high speed. Therefore, even if the time code is not recorded on the magnetic tape 1, the display means 1
2, it is possible to check the running direction and running speed of the magnetic tape.0 As described above, according to this embodiment, the subcode decoder decodes the subcode and whether or not there is a time code in the decoded subcode. a time code detecting means for detecting the rotation of the reel stand, a detecting means for detecting the rotation of the reel stand, a counting means for generating a numerical value corresponding to the number of rotations, and the time code detecting means. By providing a display means that is controlled to display the time recorded on the tape, if there is no time code in the subcode, a numerical value corresponding to the number of revolutions of the reel stand, which is the output signal of the counting means. , the tape is equipped with a display device that displays the time code if the time code is recorded on the magnetic tape 1, and displays a numerical value corresponding to the rotational state of the reel stand if no time code is recorded. is housed inside the tape recorder main body, and the running state of the tape can be confirmed even when the tape itself, the tape take-up reel stand, and the tape supply reel stand are not visible to the user.

Effects of the Invention A subcode decoder that decodes a subcode, a timecode detection means that detects whether or not there is a timecode in the decoded subcode, a detection means that detects the rotation of the reel stand, and a rotation speed corresponding to the number of rotations. counting means for generating a numerical value, and the time code detecting means detecting the time recorded on the tape if there is a time code in the subcode, and the output signal of the counting means if there is no time code in the subcode. By providing a display means controlled to display a numerical value corresponding to the number of rotations of the reel stand, the time code is displayed when the time code is recorded, and the time code is displayed when the time code is not recorded. Since numerical values corresponding to the rotational status of the reel stand can be displayed, the tape can be displayed even when the tape is stored inside the tape recorder and the tape itself, the tape take-up reel stand, and the tape supply reel stand are not visible to the user. You can check the running status of.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of a PCM recorder according to an embodiment of the present invention, Fig. 2 is a front view showing an example of displaying a time code, and Fig. 3 is an example of displaying numerical values corresponding to the number of rotations of the reel stand. FIG. 1... Magnetic tape, 2... Rotating head, 4... Switcher, 8... Subcode processor, 9... Time code detection means,
10... Reel stand, 11... Rotation detection means, 12... Counting means, 13...
- Switch section, 14...display means.

Claims (1)

[Claims] means for reproducing a tape on which PCM data and related subcodes are recorded; a subcode decoder for decoding the subcodes; and a timecode detection means for detecting whether or not the decoded subcodes include a timecode; A detection means for detecting the rotation of the reel stand, a counting means for generating a numerical value corresponding to the number of revolutions, and the time code detection means detect the time recorded on the tape when the subcode includes a time code. A PCM recorder comprising display means controlled to display a numerical value corresponding to the number of rotations of a reel stand, which is an output signal of the counting means, when the code does not include a time code.