JPH056601Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Purpose of the invention" (Field of industrial application) This invention relates to a digital audio disc player (hereinafter referred to as a DAD player), and in particular, a device that plays music from a pre-specified performance start position. The present invention relates to an inter-song performance circuit for a DAD player suitable for inter-song performance in which the inter-song performance is repeated until the final position.

(Prior Art) Some conventional DAD players are equipped with an inter-music performance circuit that can repeatedly play between songs from a pre-designated performance start position to a performance final position.

For example, as shown in FIGS. 3 and 4, this inter-song performance circuit includes an inter-song performance designation key S1 for specifying the start position and final position of the inter-song performance.
and the inter-song replay designation key S, which specifies inter-song replay.
2, an inter-song performance control circuit 21 that generates and outputs a start time latch signal and a final time latch signal, respectively, by operating the inter-song performance designation key S1; a start time latch circuit 22 that stores a performance start position; and a start time latch circuit 22 that stores a final performance position. Final time latch circuit 23 and Q inputting Q data
Data input circuit 24 and this Q data input circuit 2
A comparison circuit 25 compares the current position absolute time data outputted from 4 with the time data outputted from the final time latch circuit 23, and outputs a start signal when they are equal, and a start time latch circuit 22 that uses this start signal.
The present invention includes an absolute time search control circuit 26 that performs a search using search data output from the current position and absolute time data of the current position.

(Problem to be solved by the invention) However, in the inter-music performance circuit of the conventional DAD player described above, the inter-musical performance designation key S1
Since they are provided separately from the inter-song replay designation key S2 for replaying the music from the performance start position, there is a drawback that the operability is poor. In addition, a key that specifies replay from the performance start position has also been proposed as a ``PLAY (play start) key''; however, in this case, the ``PLAY key'' is
"PAUSE key" could not be used, and an additional key was still required. Furthermore, if there is no key that allows you to play again from the starting position,
For example, if you go beyond the gap between songs when fast-forwarding or fast-reversing, in order to enter the gap again, remember the time of the performance start position and the performance end position between the songs, and then go beyond the gap between songs. However, this was technically extremely difficult.

This invention was made in view of the above points, and its purpose is to be able to specify an arbitrary performance start position and performance end position with a single inter-musical performance designation key, and to By making it possible to play the desired inter-song performance without any operations,
It is an object of the present invention to provide an inter-song performance circuit for a DAD player with improved operability.

"Structure of the invention" (Means for solving the problem) The inter-song performance circuit of the DAD player according to this invention includes an inter-song performance designating means for specifying an arbitrary performance start position and performance end position in the inter-song performance; Inter-song performance control means generates and outputs a start time latch signal and a final time latch signal based on the operation of the inter-song performance designation means, and reads out current position data of the disc being played based on the start time latch signal and the final time latch signal. , storage means for storing performance start position data and performance end position data; means for outputting the performance start position data as search data from the storage means; and a comparison for comparing the match between the end position data and the current position data. means for outputting a search start signal for starting a search when a match is determined by the comparison means; and means for outputting an inter-song performance start signal for starting the inter-song performance at the same time as the performance end position data is specified. This problem is solved by configuring the apparatus to repeatedly play between songs at arbitrary performance start positions and performance end positions using the search data, the inter-music performance start signal, and the search start signal.

(Function) When the inter-music performance designation key is pressed once by the inter-musical performance control circuit, a start time latch signal is output, and the inter-musical performance start position is latched.
Next, when you press the inter-song performance designation key once again and perform the input operation, the final time latch signal is output, the final performance position between the songs is latched, and the absolute time search control circuit causes the inter-song performance A performance start position is searched, and inter-song performance begins. When the final position between songs is reached, the comparison circuit starts the absolute time search again. Therefore, while this state is maintained, it is possible to perform a so-called inter-musical performance, in which arbitrary inter-musical intervals are repeatedly performed. Furthermore, when the above-mentioned song interval is exceeded due to fast-forwarding, fast-reversing, etc., the start signal is not output from the comparison circuit. At this time, if you wish to perform the inter-song performance again, press the inter-song performance designation key again and perform the input operation, and the inter-song performance control circuit will select the absolute time search function.
A start signal is output, and the inter-musical performance is performed again.

(Embodiment) An embodiment of the inter-song performance circuit of the DAD player according to this invention will be described based on FIGS. 1 and 2. FIG. 1 is a block diagram showing the inter-music performance circuit, and FIG. 2 is a circuit diagram showing a specific example of the inter-music performance control circuit.

In the figure, S is an inter-song performance designation key, and each time this inter-song performance designation key S is inputted, the performance start position of the inter-song performance, the performance final position, and the inter-song replay are specified in sequence. I can do it. Reference numeral 21 denotes an inter-music performance control circuit, which is constructed as shown in FIG. 2, and which sequentially generates and outputs a start time latch signal, a final time latch signal, and an inter-musical performance start signal by key operation of the inter-song performance designation key S. It is. 24 is a Q data input circuit, based on the Q data from the signal processing circuit 5,
Outputs current position absolute time data. Reference numeral 22 denotes a start time latch circuit which stores the performance start position based on the start time latch signal from the inter-music performance control circuit 21 and the current position absolute time data from the Q data input circuit. 23 is a final time latch circuit which stores the final performance position based on the final time latch signal from the inter-music performance control circuit 21 and the current position absolute time data from the Q data input circuit 24. 25 is a comparison circuit, Q data input circuit 2
The current position absolute time data output from 4 is compared with the time data output from the final time latch circuit 23, and when the two are equal, a start signal is output. 26
is the absolute time search control circuit,
Using the start signal output from the comparison circuit 25, the search data output from the start time latch circuit 22, and the current position absolute time data output from the Q data input circuit 24, the performance start position between songs is determined. Configured to search.

With the above configuration, when the inter-music performance designation key S is pressed once and inputted, the inter-music performance control circuit 21 outputs a start time latch signal. This start time latch signal is input to the start time latch circuit 22 to latch the performance start position between songs. next,
If you press the inter-song performance designation key S again and perform the input operation, the inter-song performance control circuit 21 will output the following information:
A final time latch signal is output. This final latch signal is input to the final time latch circuit 23 to latch the final performance position between songs, and the absolute time search control circuit 26 searches for the performance start position between songs to start the performance between songs. However, when the final position between songs is reached, the comparison circuit 25 starts the absolute time search again. Therefore, if we continue to maintain this state, between any two points,
In other words, it is possible to perform so-called inter-musical performance, in which a performance is repeatedly performed between a preset performance start position and a performance end position of inter-musical performance.

If the above-mentioned two-point interval is exceeded due to operations such as fast-forwarding and fast-reversing, the start signal from the comparator circuit 25 is not output.

In this state, if you want to start the inter-song performance again, press the inter-song performance designation key S again and input it, and the inter-song performance control circuit 21 will output an inter-song replay start signal. , the inter-song performance can be started again.

"Effects of the invention" According to the inter-song performance circuit of the DAD player according to this invention, it is possible to specify any performance start position and performance end position with just one inter-song performance designation key, and any operation after the specification is possible. A desired inter-musical performance can be reproduced without having to do anything, and it can be constructed at low cost. Also,
Since you can specify any play start position and play end position with just one inter-song performance designation key, it is possible to simplify the operation, and it has the advantage of being extremely effective in practice. It has several features.

[Brief explanation of drawings]

Figures 1 and 2 show the DAD according to this invention.
This shows an embodiment of the inter-song performance circuit of the player, and FIG. 1 is a block diagram showing the inter-song performance circuit;
FIG. 2 is a circuit diagram showing a specific example of the inter-musical performance control circuit. 3 and 4 show a conventional example, in which FIG. 3 is a block diagram showing the main parts of a DAD player, and FIG. 4 is a block diagram showing an inter-musical performance circuit. S...Inter-song performance designation key, 21...Inter-song performance control circuit, 22...Start time latch circuit, 23...Final time latch circuit, 24...Q
Data input circuit, 25...comparison circuit, 26...absolute time search control circuit.

Claims (1)

[Claim for Utility Model Registration] Inter-music performance designating means for specifying an arbitrary performance start position and performance end position in inter-musical performance, and a start time latch signal and a final time latch signal based on the operation of this inter-musical performance designation means. inter-song performance control means for generating and outputting; a storage means for reading current position data of the disc being played according to the start time latch signal and the final time latch signal and storing performance start position data and performance end position data; means for outputting performance start position data as search data; comparison means for comparing the end position data with the current position data; and a search start signal for starting the search when the comparison means determines that they match. means for outputting an inter-song performance start signal for starting the inter-song performance at the same time as the performance end position data is specified; An inter-song performance circuit of a DAD player configured to repeatedly play between songs between a performance start position and a performance end position.