JPH0343699B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a tape recorder having a music selection function.

Construction of conventional examples and their problems In recent years, as a field of tape recorders, there has been a performance device in which the user sings through a microphone along with the accompaniment-based tape playback sound, and performs a performance by mixing the tape playback sound and the microphone sound. It is becoming popular. (This is commonly called a karaoke device, and will be referred to hereinafter as a karaoke device.) This karaoke device generally has a song selection function that selects the beginning of a desired song from among multiple songs recorded on a cassette tape. However, conventional devices either select a song, locate the beginning of a desired song, then stop and go into a standby state, or simply resume normal playback after locating the beginning of a song. Therefore, it is not known whether the selected song is the desired song until playback and performance begins, and there have been cases where the user realizes an error in song selection and selects a new song after playback has started. Also, depending on the song, the prelude part (the part called intro) may be difficult, and there is a desire to check the prelude part or the beginning of the song before singing. This had to be done manually and was very cumbersome to operate.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a tape recorder that can automatically confirm the prelude of a desired piece of music when selecting a piece of music.

Structure of the Invention The present invention includes a no-signal detection circuit that detects a no-signal area on a magnetic tape, and a mechanism that starts counting in the playback state after detecting no signal and generates an output when the counted value reaches a certain value. a counting means for giving a rewinding command to the control section; a state storing means for storing the rewinding state; and a determining means for receiving at least the output of the no-signal detection circuit and the output of the state storing means and giving a command to the mechanism control section. It selects a song by detecting a no signal, plays the prelude of the selected song until a certain value is detected by the counting means, and then automatically rewinds and stops at the beginning of the selected song again. This is a tape recorder configured to.

DESCRIPTION OF THE EMBODIMENTS FIG. 1 is a block diagram showing an embodiment of the present invention. 1 is a tape running device; 2 is a mechanism control unit that controls the operation of the tape running device by obtaining the outputs of the discriminating means and counting means, which will be described later; and 3 is a mechanism control unit that detects a non-signal area on the magnetic tape and outputs "H". 4 is an intro playback switch for obtaining a playback state for a certain period of time corresponding to the prelude after detecting no signal by turning on; 5 is a no-signal detection circuit 3, an intro playback switch 4, and a state storage means to be described later. A discriminator 6 counts the time from the start of the playback of the prelude section;
Counting means gives a command for rewinding (prelude rewinding state) to the mechanism control section when a certain constant value is reached, and 7 is a state storage means for storing the state in which the prelude is being rewound.

FIG. 2 is a block diagram in which the discrimination means, counting means, mechanism control section, and state storage means are realized by a microcomputer, and the output of the intro playback switch 4 and the output of the no-signal detection circuit 3 are input to the microcomputer 8. ing.

FIG. 3 is a timing chart showing the operation of each part of FIG. 1. FIG. 4 is a flowchart of essential parts for explaining the operation of the microcomputer 8 of this embodiment.

The operation of this embodiment with the above configuration will be described in detail below.

First, the operation when the intro playback switch 4 is off will be explained. Fast forwarding of the tape running device 1,
When the no-signal detection circuit 3 detects no signal at time t1 in FIG. ₃ in the rewinding state, the determining means 5 determines the no-signal output at step 9, and turns the intro playback switch 4 on or off at step 10. determine,
Since it is currently off, a stop command is given to the S input of the mechanism control section 2 in step 11 to bring the tape running device 1 into a stopped state.

On the other hand, the case when the intro playback switch 4 is on will be explained. When no signal is detected at time _t1 , the determination means 5 passes through steps 9 and 10, determines the output of the state storage means 7 in step 12, and gives a reproduction command to the P input of the mechanism control section 2 in step 13. At the same time, a counting start command is given to the counting means 6.

Next, in the prelude playback state, the count value of the counting means 6 reaches a certain value at time _t2 in FIG. 3, and the output becomes "H".
When the
At step 6, a rewinding command is given to the R input of the mechanism control section 2, and at step 17, the counting means is reset and the state storage device 7 is made to store that the previous winding section is in the rewinding state.

Next, when a no-signal section is detected again at time _t3 in FIG. Give a stop command to the S input.

By selecting the intro playback switch as described above, after selecting a song in the fast forward or rewind state, it is possible to automatically play the prelude of the song and check its contents.

Further, the present invention can be easily realized by constructing the mechanism control section 2, the discriminating means 5, the counting means 6, and the state storing means 7 using a microcomputer as shown in FIG.

Effects of the Invention The present invention includes a no-signal detection circuit, a state storage means for storing at least the rewinding state after the previous volume has been reproduced;
By providing a discriminating means for discriminating these states and a counting means for counting the prelude playback time, the prelude playback state is automatically entered after a song interval is detected in the fast forward or rewind state, and the counting means is activated. After playing for a certain period of time, the disc will automatically rewind and the beginning of the song can be detected again. That is, by providing the above-mentioned state storage means and discrimination means to distinguish it from the normal rewinding and song selection state, even if a song interval is detected in the rewinding state after the prelude has been played, the prelude is not replayed and the state is stopped. state. As described above, according to the present invention, it is possible to provide an excellent tape recorder that can play the prelude after song selection, wait at the beginning of the song after confirmation, and greatly improve operability during automatic song selection. It is.

[Brief explanation of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of the present invention.
FIG. 2 is a block diagram of an embodiment using a microcomputer, FIG. 3 is a timing chart showing the operation of each part in FIG. 1, and FIG. 4 is a flow chart showing the control means of the microcomputer. DESCRIPTION OF SYMBOLS 1...Tape running device, 2...Mechanism control section, 3...No signal detection circuit, 4...Intro playback switch, 5...Discrimination means, 6...Counting means, 7...State storage means, 8... ...microcomputer.

Claims (1)

[Claims] 1. A no-signal detection circuit that detects a no-signal area on a magnetic tape, and a mechanism that starts counting in the playback state after detecting no signal and generates an output when the counted value reaches a certain value. a counting means for giving a rewinding command to a control section; a state storage means for storing at least the rewinding state after the output is generated by the counting means; and at least the output of the no-signal detection circuit and the output of the state storage means are inputted; It has a control means for giving a command to a mechanism control section, and after detecting a song interval by the no-signal detection circuit in the fast forward or rewind state, the tape running device is brought into the playback state and the counting means is started to count the number of tracks. While reproducing the prelude part of the tape, when the count value of the counting means reaches a certain value, the tape is automatically rewound, and the no-signal detection device detects the beginning of the song again, and the tape running device is stopped. A tape recorder featuring: 2. A no-signal detection circuit that detects a no-signal area on the magnetic tape, and after no-signal detection, starts counting in the playback state, and when the counted value reaches a certain value, outputs and sends a rewind command to the mechanism control section. , a state storage means for storing at least a rewinding state after the output is generated by the counting means, a prelude playback switch, an output of the no-signal detection circuit, an output of the state storage means, and a prelude playback switch. When the prelude playback switch is on, the prelude is automatically played back until a certain value is counted by the counting means. A tape recorder characterized in that the tape recorder is configured to rewind and stop at the beginning of a song again, and when the prelude playback switch is off, the tape recorder is configured to immediately stop at the beginning of a song when no signal is detected from high-speed running.