JPH0650824B2 - Automatic reception system for traffic information broadcasting - Google Patents

Description

The present invention relates to a system for receiving traffic information broadcast in an audio system such as a car stereo equipped with a tuner and a tape player.

(B) Conventional technology In Europe, a traffic information system called ARI system has been developed, and Sanyo Semiconductor News No. 726 and No. 1 have been developed.
At 216, an audio system for receiving a traffic information broadcasting station is disclosed. That is, conventionally, manually select a desired traffic information broadcasting station in advance with the radio side switched to,
The tape player is activated to wait for the broadcast, and when the broadcast starts, it switches to the radio, and when it ends, it switches to the tape player again. Then, the broadcast of the same station is awaited again.

(C) Problems to be solved by the invention With the conventional technology, since the traffic information of only one station selected in advance can be received, when the vehicle is moved to a distant place such as a long-distance drive, depending on the movement of the vehicle. I had to tune in again.

(D) Means for Solving Problems The present invention outputs a sound signal of either a tuner unit having a tuning circuit, a tape player, and the sound signals of the tuner unit and the tape player to a sound amplification circuit. A switching circuit, detecting means for detecting an announcement signal indicating that the traffic information broadcast is being broadcast from the composite signal obtained by the tuner section, and tuning data corresponding to a plurality of selected traffic information broadcasting stations. A preset memory for storing, a keyboard having a plurality of operation keys, and a controller are provided, and even in an operating state of the tape player, according to a predetermined key operation of the keyboard,
The tuning data stored in the preset memory is sequentially sent to the tuning circuit, and the presence or absence of the announcement signal is determined for each sending. If not, the standby state is continued, and if there is, the switching circuit is operated. The tape player is switched to the tuner side to output the traffic information broadcast, and the switching circuit is returned to the tape player side after the announcement signal disappears.

(E) Operation In the present invention, first, the tuning data at the predetermined address in the preset memory is sent to the tuning circuit, and the broadcast waiting state is set. Then, when the traffic information broadcast of the station starts, the tape is switched to the radio and the traffic information broadcast can be heard. When the broadcast ends, the tape is returned to the tape again, and the next traffic information broadcasting station in the preset memory waits for the broadcast. Similarly, the broadcasts of the traffic information broadcasting stations stored in the preset memory are sequentially output, and the tape can be heard except during the traffic information broadcasting.

(F) Embodiment FIG. 1 is a block diagram showing an embodiment of the present invention.
Is a front end FE, a mixing circuit MIX, an intermediate frequency amplifying circuit IF, a detecting circuit DET, a demodulating circuit DEM, a voltage controlled oscillator VCO, and a P including a programmable plug PD.
A tuner section comprising an LL channel selection circuit (2), (3) a station detection circuit which discriminates the level of the output IFO of the intermediate frequency amplifier circuit IF and generates a station detection signal SD when the tuner section (1) captures a station, (4) is a SK signal as a station identification signal indicating a traffic information broadcasting station, a DK signal as an announcement signal indicating that the traffic information broadcasting is being broadcast, and a broadcast area signal indicating a traffic information broadcasting area And the BK signal as
Composite signal COMP output from the detection circuit DET
The SK / DK / BK separation circuit for separating from (5) is composed of, for example, a counter, and detects the presence or absence of the SK signal and the DK signal by counting the SK signal and the DK signal for a predetermined period. A frequency discriminator circuit that generates DKD, counts the BK signal, and outputs frequency data BKD corresponding to the frequency of the BK signal. (6) AD converts the output IFO to the electric field strength of the selected broadcasting station. An AD converter for outputting the data FSD, (7) a keyboard having a plurality of operation keys, (8) a cassette tape player, (9) a radio sound signal RADIO from the tuner section (1) and a tape player (8 ), The tape audio signal TAPE is switched in accordance with the switching signal T / R, and one of the audio signals is output to the audio amplifier circuit (10), and the speaker
Switching circuit for sounding from (11), (12) display decoder,
Reference numeral (13) is a display, and (14) is a controller for controlling each part. When the cassette tape player (8) is in the operating state, a signal TAPE is sent to the controller (14).
IN is input, and the controller (14) switches the switching signal T / R.
Is preferentially set to "H", and the tape audio signal TAPE is output.

FIG. 2 is a view showing the operation keys of the keyboard (7), and the corresponding portion of the display (13) lights up in response to each key operation. Each key will be described below.

▲ [ARI] key: Used when automatically receiving an AIR broadcast. When this key is operated, the flag FR1 in the controller is set to enter the ARI mode. Display "AR
“I” lights up. ▲ [FS] ▼ key: Used to detect electric field strength, display “F”
S "lights up ▲ [SCAN] ▼ key: Used when searching for a station, display" SC "
AN "blinking ▲ [PRE] ▼ key: Used for continuous reading from ARI preset memory in ARI mode ▲ [RST] ▼ key: ARI mode release key. When this key is operated, the flag FRI in the controller is reset. , Display "ARI" is off. ▲ [A / 1] ▼ to ▲ [F / 6] ▼: Designate broadcasting areas A to F. Also used for writing and calling ARI station. The selected one lights up. ▲ [ALL] ▼: Designates all broadcasting areas (A to F) ▲ [UP] ▼, ▲ [DN] ▼: Up and down keys for manual tuning ▲ [MEMO] ▼: Station Writing instruction. When operated, the display "MEMO" lights up, and turns off after writing. ▲ [M1] ▼ to ▲ [M6] ▼: Preset channel key of normal station By the way, the controller (14) has a memory (15). ), This memo As shown in FIG. 3, the reference numeral (15) is a tuning data memory (16) for storing tuning data to be sent to the programmable divider PD of the PLL tuning circuit (2) and a tuning station corresponding to an ordinary broadcasting station. Preset memory (1
7) and the ARI that stores the tuning data corresponding to the ARI station
Preset memory (18), search data memory (19),
Key data memory (20) and band edge memory (2) that stores high-edge data and low-edge data of the reception band.
1) is equipped.

Next, regarding the operation according to various key operations of the present embodiment,
This will be described with reference to the flowcharts of FIGS.

The operation shown below is the operation when the ARI key (22) is operated to enter the AIR mode.
The cassette tape player (8) and the tuner section (1) perform normal operations in response to key operations, similar to general ones. Also, the following key operation is performed after inserting the cassette tape and operating the tape player (8),
Alternatively, the same processing is performed even before the operation of the tape player (8).

(i) ▲ [ARI] ▼ → ▲ [ALL] ▼ → ▲ [SCAN]
▼ In this case, first, operate the ARI key (22) to set the flag F.
R1 is set and the ARI mode is set. Next, when the ALL key (23) and the SCAN key (24) are continuously operated,
The broadcasting area is designated in all areas A to F, and as shown in the flowchart of FIG. 4, the flag FR2 and the flag FR3 are set.
Is set, and the process moves to FIG. Here, it is assumed that the cassette tape player (8) is operated after the above key operation. Then, the controller (14) becomes TAPE
T / R is set to "H" according to IN, and therefore the tape sound is emitted from the speaker (11).

When entering the processing of FIG. 5, first, the controller (14) sets P
In order to make the LL tuning circuit (2) perform the search operation, the contents of the tuning data memory (16) are incremented and the contents are sent to the PLL tuning circuit (2). Then, it is determined from the signals SD and SKD whether or not the ARI station is selected.
If the channel is not selected, the channel selection data is continuously incremented, and when the channel is selected, it is determined by the signal DKD whether or not the traffic information is currently being broadcast. If it is not broadcasting, the search operation is restarted. If it is broadcasting, the switching signal T / R is set to "L" to switch from the tape to the radio, the operation of the tape player (8) is stopped, and the ARI broadcasting is broadcast. Sound. When the ARI broadcast ends and the signal DKD disappears,
The tape player (8) is restarted and the switching signal T /
Return R to "H" from radio to tape. Then, the search operation is repeated again.

That is, when this key operation is performed, the broadcasting station is sequentially searched from all the ARI stations, and the traffic information is sequentially emitted. Therefore, it becomes possible to obtain a lot of traffic information in a short time while listening to the tape.

(ii) ▲ [ARI] ▼ → ▲ [A / 1] ▼ ～ ▲ [F / 6] ▼
→ ▲ [SCAN] ▼ This key operation is to operate any one of the A / 1 key (25a) / F / 6 key (25f) instead of the ALL key (23). In this case, the flag F is the same as when the (i) key is operated.
Although R1 and FR3 are set and the process of FIG. 5 is started, since the flag FR2 is reset, it is added the determination whether the frequency data BKD of the BK signal is the data of the designated area, Only ARI stations within the area will be searched. The following processing is key operation
It is exactly the same as (i).

(iii) ▲ [ARI] ▼ → ▲ [FS] ▼ → ▲ [SCAN]
In the case of this key operation, the flag FR1 is set and the flag FR4 is set, and the processing shown in FIG. 6 is started.
Also in this case, it is assumed that the cassette tape player (8) is operating.

In FIG. 6, first, the low edge data of the band edge memory (21) is written in the tuning data memory (16), and this data is sent to the tuning circuit (2). Then, the search for the ARI station is started by the determination of the signals SD and SKD, and A
When the RI station is selected, the selected data and the electric field strength data FSD are stored in the search data memory (19), and this operation is performed until the search reaches the high edge. That is, when all the ARI stations in the reception band are searched and the search in the reception band is completed once, the largest one of the electric field strength data FSD in the search data memory (19) is selected and the corresponding tuning data is selected. Is the tuning data memory (1
It is sent to the PLL tuning circuit (2) via 6). That is,
The ARI station with the highest electric field strength is selected.

Then, the signal DKD is judged, the broadcast of the ARI broadcast is waited, and even if the predetermined time T ₀ determined by the timer elapses, the AR
When the I broadcast is not started, the process returns to and the search for the ARI broadcast station is restarted. When the ARI broadcast is started within the predetermined time T ₀ , the tape is switched from the tape to the radio by the switching signal T / R, and the operation of the tape player (8) is stopped, just as in the case of the key operation of (i). Broadcast sound, A
After the RI broadcast ends, that is, after the signal DKD disappears, the tape is operated and the radio is switched to the tape. After that, AR
Restart the search for the I broadcast station.

Therefore, with this key operation, the ARI with the highest electric field strength
The traffic information of the station will always be emitted. Of course, AR
A tape sound is emitted except during broadcasting of the I broadcast.

(iv) ▲ [ARI] ▼ → ▲ [PRE] ▼ In the case of this key operation, the flag FR1 and the flag FR5
Is set, and the processing shown in FIG. 7 is started. Also in this case, it is assumed that the cassette tape player (8) is operating.

In FIG. 7, first, the first address of the ARI preset memory (18) is designated, and the data stored therein is sent to the PLL tuning circuit (2) via the tuning data memory (16). . Then, the signals SD and SKD are used to judge whether or not the ARI station is present.
The next address of the preset memory (18) is specified. A
In the case of an RI station, the signal DKD is judged and the ARI broadcasting is on standby, and the ARI broadcasting is started and the signal DKD is started.
Occurs, the tape is switched from the tape to the radio by the switching signal T / R, the operation of the tape player (8) is stopped and the ARI broadcast is emitted just as in the case of the key operation of (i) and (iii). , After the ARI broadcast ends, that is, after the signal DKD disappears, the tape is operated and the radio is switched to the tape.
Then, after this switching, the address of the ARI preset memory (18) is updated. Therefore, the ARI preset memory
After receiving the ARI station stored in the first address of (18), the ARI station stored in the second address waits for broadcast, and thereafter, the ARI station of the ARI preset memory (18) changes from the first address to the final address. Are sequentially received.

Therefore, for example, if ARI stations along the route to the destination are sequentially stored in the ARI preset memory (18) and this key operation is performed, necessary traffic information can be automatically obtained while listening to the tape.

When the key operation of (iii) is performed, in this embodiment,
Although it was decided to search from the low edge to the high edge, other methods may be used as long as the reception band is searched once, for example, the tuning data when the key operation is performed is stored and the reception is performed from that point. You may search the band once. To write to the ARI preset memory (18), manually select an ARI station with the UP key (26) or DN key (27), operate the MEMO key (28), and then press the A / 1 key (25a) ~ Any one of the F / 6 keys (25f) should be operated.

By the way, in this embodiment, when the RST key (29) is operated, the flag FR1 is reset, the ARI mode is released, and each processing is stopped.

(G) Effect of the Invention According to the present invention, it is possible to automatically listen to the broadcasts of the traffic information broadcasting stations stored in the preset memory in order, and to listen to the tape except when the traffic information is being broadcast. .
Therefore, if the traffic information broadcasting stations along the route to the destination are preset, the necessary information is automatically obtained, which is very convenient.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing operation keys of a keyboard, FIG. 3 is a diagram showing a configuration of a memory, FIG. 4, FIG. 5 to FIG. FIG. 7 is a flowchart showing the processing contents of the controller. Description of main drawing numbers (1) …… Tuner, (2) …… PLL tuning circuit, (7) ……
Keyboard, (8) …… cassette tape player, (9)…
… Switching circuit, (10) …… Voice amplifier circuit, (14) …… Controller.

Claims (1)

[Claims] 1. A tuner unit having a channel selection circuit, a tape player, a switching circuit for switching one of the audio signals of the tuner unit and the tape player to an audio amplifier circuit, and the tuner unit. Corresponding to a plurality of selected traffic information stations, detection means for detecting a station identification signal indicating a traffic information broadcasting station and an announcement signal indicating that the traffic information broadcasting is being broadcast from the obtained composite signal It is provided with a traffic information preset memory for storing tuning data, a keyboard having a plurality of operation keys, and a controller, and is stored in the preset memory when the traffic information reception mode is set by a predetermined key operation of the keyboard. One of the selected tuning data is sent to the tuning circuit, and the presence or absence of the announcement signal is determined. State,
If there is, the switching circuit is driven to switch the operation from the tape player to the tuner to output the traffic information broadcast, and after the announcement signal disappears, the switching circuit is returned to the tape player side and stored in the preset memory. An automatic reception system for traffic information broadcasting, characterized in that the next selected channel selection data is transmitted to the channel selection circuit.