JPS6135025A - Program identification receiver providing with recording function - Google Patents

Abstract

PURPOSE:To select always a new information program with priority by providing a means receiving a program identification code, recording an output of reception demodulation output, stopping reproduction when a new program identification code is obtained during reproduction to output a reproducing sound of the program received newly. CONSTITUTION:A radio wave incoming to an antenna 1 is fed to an electronic switch 8 via a tuner 2 and fed to a coincidence detection circuit 4 via a program identification signal detection circuit 3. An output from a program start code pattern setting circuit 5a and a program end code setting pattern 5b are fed to the circuit 4 and a program selection switch 6 is connected to the circuit 5a. A coincidence output is latched by an FF circuit 12 and it is recorded by a recording and reproducing device 7 based on an output of the FF12. When a new coincidence output is obtained while a recorded signal is reproduced by operating a reproducing key 24, the reproduction is inhibited via an FF circuit 14' and recording is executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention receives broadcast radio waves on which a program identification signal is superimposed when broadcasting specific information such as traffic information, weather forecasts, or news. It relates to radio receivers, and in particular relates to six radio receivers equipped with a recording function that automatically records traffic information, news programs, etc.

[Conventional technology]

The traffic information broadcasting system (commonly known as API) currently being put into practical use in West Germany uses a low frequency signal for identification at 56Kl (Z).
This signal is always sent out while traffic information is being broadcast.

Therefore, the CM receiver side is equipped with a detection means for a low frequency signal for identification, and traffic information can be heard using the output from this detection means as a key.

However, such a system cannot be used effectively when transmitting one specific piece of information, such as traffic information, but it can also be used to transmit different types of programs such as weather forecasts and news. There is a limit to how many types of discrimination can be made so that only the necessary things can be heard.

[Purpose of the invention]

Therefore, this invention transmits a different program identification code for each type of program, and the receiver side sets the necessary listening programs in advance, so that only one type of necessary information or multiple types of information can be transmitted. Therefore, it is an object of the present invention to provide a program identification receiver that can receive such broadcasting systems.

In addition, this invention has a function to automatically record a desired broadcast program in response to identification (I) and to replay it, so that while a roughly recorded program is being played back and listened to, a new next one can be recorded. The purpose of this invention is to provide a program identification receiver that is configured so that when a TIv information program is received, this information program can be played back and listened to preferentially, so that new information can always be listened to. .

[Embodiments of the invention]

As mentioned above, this invention is capable of identifying and receiving the information content sent by broadcasting, but before explaining the configuration of the receiver, we will explain the broadcasting method used in this invention. There will be a need.

Figure 2 shows the outline of the format of the programs to be sent out.Traffic information and other information programs have 12 different start codes Bakun as shown by X in Figure 2. ×4 words are sent for 3 seconds. After this, traffic information etc. are sent, and when this is finished, a termination code pattern of 12 pips 1-×4 words is sent for 3 seconds as shown by Y, and the program moves on to the next program B.

This start and end code pattern takes, for example, 2411z and 32112 in the audio signal, and FSX (Freque
The pattern is sent out as 0.1 data by modulation. Therefore, a 12-bit pattern output can be obtained by the FsKffi adjuster that distinguishes between 24Hz and 32H2 on the receiving side.

The start code pattern at this time can be set in various combinations within the range of several bits behind the 12 bits, and the combination of 1 and 0 can make it possible to identify many types of broadcast content. can.

Note that if you set only one type of termination code pattern, there will be no problem.

The broadcasting system explained above is an example in which an identification signal is superimposed on the low frequency part of an audio signal, but for example, in the case of medium wave radio broadcasting, it is also possible to frequency modulate the carrier wave and send out an FSK signal. In this case, the intermediate frequency signal is F on the receiver side.
The FSX signal can be extracted by M demodulation.

FIG. 1 shows an embodiment of the present invention, and although not shown in the figure, a manual on/off switch can be provided in parallel with the switch 8 for listening to the playback sound when receiving a normal broadcast program. In the figure, 1 is an antenna, 2 is a tuner section, and the output thereof is applied to a coincidence detection circuit 4 via a meter group identification number detection circuit 3. Outputs from a program start code pattern setting circuit 5a and a program end code pattern setting circuit 5b are applied to this minus number configuration circuit 4, and the program start code pattern setting circuit 5a further includes a program selection switch. 6 is connected.

The IM and open output from the tuner section 2 above is the recording/reproducing device 7.
The signal is applied to the amplifier 10 via the electronic switch 8 and the mixer 9, and can be reproduced by the speaker 11.

The first coincidence detection output from the above-mentioned number output circuit 4 is the set input of the first R-S flip flow 71 times 1i'812 &
The match detection output of text box 2 is connected to iS at its reset input terminal R.
This flip-flop circuit is used as a launch means. The Q output terminal of this flip-flop circuit 12 is connected to one input terminal of an AND circuit 13 and to the first input terminal of a three-man power AND circuit 14.

, the output terminal of the AND circuit 13 is connected to the input terminal S of the second R-S flip-flop circuit 14', and its Q output terminal is connected to the electronic switch 8 of the second R-S flip-flop circuit 14'. It is also connected to one input terminal of an OR circuit 15, and through this OR circuit 15 to the reset input flR of the third R-S flip-flop circuit 16.

The 0 output terminal of the first Frisopf circuit 12 is O.
It is connected to one input terminal of the R circuit 17, and via this to the cent input terminal of the fourth R-S flip-flop circuit 18, and its Q output terminal is connected to the rewinding terminal of the recording/reproducing device 7. Connected to command input terminal REW. The 0 output terminal of the flip-flop circuit]2 is connected to the reset input #AR of the fifth R-S flip-flop circuit 19, and is also connected to the set input terminal R of the second flip-flop circuit 14'. It is connected.

Reference numeral 20 is a sound on/off switch, which is used to select whether or not to reproduce the desired information program through the speaker 11 when it is broadcast. This switch 2
0 is connected to the other input terminal of the AND circuit 13 through the OR circuit 21 and U7, and is also connected to the inverting input terminal of the three-man power AND circuit 22.

Reference numeral 23 denotes a recording/non-recording switch, which is used to select whether or not to automatically record a desired information program when it is broadcast. This switch 23 is a three-man manual
The output of the AND circuit 14 sets a flip-flop circuit 19, and its Q output is connected to the recording command input terminal R of the recording/playback device 7.
In addition to BC, the recording/playback device 7 is set to recording mode.

24 is a playback key, which sets the recording/playback device 7 to the In mode. This switch 24 is powered by 3 people A
The output terminal of this AND circuit 25 is connected to the cent input terminal S of the third flip-flop circuit 16, and its Q output is connected to the AND circuit 22.
is applied to the playback command input terminal PL of the recording/playback device 7.
AY is also applied, whereby the recording/playback device 7 enters the playback mode and provides its playback output to the mixer 9.

2G is a rewind key, which is applied to the other input terminal of the OR circuit 15, resets the flip-flop circuit 16, and is also applied to the AND circuit 27.
An output is given to the cent input &liS of the flip-flop circuit 18 via the ND circuit 27 and the OR circuit 17,
The configuration is such that 11 outputs are provided from the Q output terminal of the flip-flop circuit 1?818 to the rewind command input terminal REW of the recording/replaying device 7. The recording/playback device 7 outputs an H output to the input terminal R of the flip-flop circuit 18 at the point when the recording tape is rewound to the starting point or the recording starting point set by a tape counter (not shown).
is added to reset the flip-flop circuit 18.

In addition, 28 is the above-mentioned Frisopf lubricant circuit 18 and 19.
This is a NOR circuit that receives the output of each Q output terminal of , and this output terminal is applied to the AND circuits 25 and 27.

FIG. 3 shows a specific example of the program identification signal detection circuit 3, the output circuit 4, the program start code pattern setting circuit 5a, the program end code pattern setting circuit 5b, and the program selection switch G in FIG. be. That is, in FIG. 3, the program identification signal detection circuit 3 has a low-pass filter 31, a frequency discrimination circuit 32, and a comparator 33, and the demodulated output of the tuner section 2 is selected by this filter 31 only for the low-frequency component, and is converted into an FSK signal. is taken out. This FSK
As described above, the signal is, for example, a shift keyed signal of 2411z and 32Hz, which is discriminated by the frequency discrimination circuit 32, and the shift information is extracted by the comparator 33 as a 12-bit digital signal.

This 12-pin 1- digital signal is transferred to the shift register 41.
The serial signal of this register 41 is converted into a parallel signal No. 18 and provided to the terminal Do=Dn. Each output terminal Do- of this shift register 41
Do is connected to one input terminal of an exclusive OR circuit (hereinafter referred to as EX-OR) 43. (
In FIG. 3, EX-OR is shown as a representative one, and the others are omitted.) Also, each other input terminal of this EX-OR 43 is connected to the output terminals of 12 columns in the program start code pattern setting circuit 5a. , each EX-OR 43 compares each bit between the shift register 41 and the program start code pattern setting circuit 5a. Each comparison output of this EX-OR 43 is input to the NOR circuit 44, and therefore only when each bit of the shift register 41 and each focus in the program start code pattern setting circuit 5a all match.
.

Similarly to the above, each output terminal Do=Dn of the shift I register 41 is connected to each input terminal of the EX-OR 45, and the other input terminals are connected to each input terminal of the EX-OR 45.
Each output terminal of the program end code pattern setting circuit 5b described in 1 is connected, and the output terminal of each EX-OR 45 is connected to the NOR circuit 4.
6 is input. Therefore, the NOR circuit 46 produces an H output only when the bits of the shift register 41 and the program end code pattern setting circuit 5b all match.

The program selection switch 6 is composed of, for example, a button switch that can be turned on or off independently, and by turning it on, a predetermined number corresponding to a specific program is selected.
The 2-bit pattern is the program start code pattern sending circuit 5.
a, J: are output as parallel data.

In the above configuration, when the desired program selected by the program selection switch 6 is started, the first coincidence detection output is applied from the -number output circuit 4 to the cent input terminal S of the Frisopf 11' single block circuit 12. , the flip-flop circuit 1
It is made into a 2 cent condition.

At this time, if the sound on/off switch 20 is set to the on state, the first knob circuit 14' is turned on via the OR circuit 21 and the AND circuit 13, and the electronic switch 8 is turned on.

Therefore, the pre-program to be broadcast at this time is played back by the speaker 11. Also, the safety I of the flip-flop circuit 14'
The output is sent to the flip-flop circuit 16 via the OR circuit 15.
is reset, and the playback mode of the recording/playback device 7 is prohibited.

At the same time, the 0 output of the flip-flop circuit 14' causes AN
The D circuit 25 is prohibited, and input of the reproduction key 8 is prohibited during program reception.

? When the If set start code pattern matches, if the recording/non-recording switch 23 is set to "Yes", the H output from the AND circuit 14 is sent to the second half of the flip-flop circuit 19.
It is added to the input end and is set. Therefore, a recording command is input to the recording/playback +1317, and the recording/playback ta7 records the demodulated output provided from the tuner section 2. At this time, the output of the NOR circuit 22 has been output, so /',
The outputs of the ND circuits 25 and 15 are prohibited, and the inputs from the playback key 24 and the S return key 26 are cut off.

The playback key 24 is the flip-flop time F! P! 14'
AND when is in a reset state (other than during program reception) and when the recording/playback device 7 is in a mode other than recording mode or rewinding mode.
The flip-flop circuit 16 is connected through the circuit 25, and an H output is applied from its Q output terminal to the playback command input terminal PLAY of the recording/playback ta7. Therefore, the output reproduced from the recording and reproducing device 7 is applied to the mixer 9, and the recording content is played back by the speaker 11. During the reproduction of the recording content, the program start pattern is detected.
In addition, if the sound on/off switch 20 is off and the recording/non-recording switch is set to "Yes", AN
The flip-flop circuit 14' is connected through the D circuit 22, the OR circuit 21 and the AND circuit 13, and the pre-program is reproduced by the speaker 11. However, the flip-flop circuit 16 is reset, its Q output terminal becomes L, and the reproduction of the recording/reproducing device 7 is stopped. Also, at the time when the start coincidence pulse is input, Flinbuch I-+Tsub1
6 is set and a Q output is provided, so the recording "Yes" command from the recording on/off switch 7 is prohibited.

When the rewind 7 key 26 is operated, the Pflosop circuit 16 is reset via the OR circuit 26.
The recording/playback device 7 is released from its playback mode. At this time,
If the recording/reproducing device 7 is not given a recording command or a rewinding command, the output of the NOR circuit 22 becomes H, the AND circuit 27 operates, and the flip-flop circuit 18 is set via the OR circuit 17. Therefore, an H output is provided from the Q output terminal of the flip-flop circuit 18 to the rewind command input terminal REW of the recording/reproducing device 70, and the recording/reproducing device 7 enters the tape rewinding mode. When the tape is rewound to the starting point or the initial setting value of the tape counter, the recording/playback device 7 flips the flip flop
Since the H output is applied to the flip-flop circuit 18
is reset and stops the tape rewind command.

When the program end signal is received, that is, when the second period detection output is obtained, the flip-flop circuit 12 is reset, and the flip-flop circuit 14' is also reset to 1. Therefore, the electronic switch 8 is turned off, and before the program is not played from the speaker 11, the Q of the flip-flop circuit 14' is turned off.
Since the H output is added to the AND circuit 25, the playback key 2
Lift the prohibition on item 4. At the same time, since an H output is applied to the cent input MS of the flip-flop circuit 8 via the OR circuit 7, the Frisobuf top circuit 18 is set and issues a rewind command to the recording/playback ta7.

〔Effect of the invention〕

Since the present invention is constructed as described above, it is possible to automatically record a desired program set in advance, and it is also possible to reproduce and listen to the recorded program.

Furthermore, if the desired information program starts broadcasting while the recorded content is being played back, 1. Stop the playback mode of the recorder/player, turn the sound on/off switch off, and switch the recording on/off switch to the ON side. Even so, information programs are played back preferentially through speakers, so users can always hear new information.

[Brief explanation of the drawing]

Fig. 1 is a wiring diagram showing an embodiment of this invention, Fig. 2 is a format diagram of a program in the broadcasting system used in this invention, and Fig. 3 is a specific example of a program identification detection circuit and a -multiple output circuit. FIG. 1... Antenna, 2... Tuner section,
3... Program identification signal detection circuit, 4...
-Several output circuits, 7...recording/playback device, 8...
...Electronic switch, 9...Mixer, 10...
...Amplifier, 11...Speaker, 20...
...Sound on/off switch, 23...
Recording on/off switch, 24...Playback key, 2
6...Rewind key, 12.14',]G,
19. ．． 19...Flip-flop circuit, 13
, 14.22, 25.27...AND circuit, 1
5, 17, 21...OR circuit, 22...
・NOR circuit.

Claims (1)

[Claims] In a receiver that receives broadcast waves in which a program identification code is superimposed on a carrier wave or a part of the audio band, means for receiving the program identification code obtained from the carrier wave or the received demodulated output and recording the received demodulated output, and this recording. means for reproducing the recorded signal; and a means for reproducing the recorded signal, and when a new program identification code is obtained from the carrier wave or the reception demodulation output during reproduction of the recorded signal, the reproduction operation is stopped and a new program is received. A program identification receiver equipped with a recording function, comprising means for outputting reproduced sound.