JP3380283B2 - RDS receiver - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an RDS (Radio Data Sys
tem) relates to an RDS receiver capable of receiving broadcasts. 2. Description of the Related Art As shown in FIG. 10, RDS data is transmitted as a sequence of 104-bit elements called groups. Each group can be further broken down into four 26-bit elements called blocks. Each block is composed of 16-bit information and a 10-bit check word.
The content of each group data is defined by its position, and the 16 bits of the first block are always PI code (Program identification code), which is called program identification information. Or whether the same broadcast is being broadcast in other countries. [0005] The first five pits of the second block are the group type of the group, a code for identifying what is sent to the data sent thereafter, the next bit is TP (traffic program code), The next 5 bits are the PTY (Program type code) of the own station, which represents the contents of the program as shown in FIG. 12, and includes, for example, news, sports, education, pops, and rock music. The remaining bits of the second block, third and fourth,
The contents of the block data are defined for each group type. Among these data, the third block includes an AF code (frequency information of another station), which conveys frequency information of another station broadcasting the same program as the station being broadcast. I understand. [0005] Of the above group types, group type 14A (Type 14A group) is as shown in FIG.
ced Other Networks information, which conveys information of other networks (other networks; indicated by ON), including PTY information of other stations. As a method of using the PTY code, for example, Japanese Patent Laid-Open Publication No.
No. 829, for example. JP-A-3-34
No. 630 discloses a method in which PTY codes are prioritized and a search is performed, and if there is no station with the highest PTY code, the station is switched to the next PTY code. Japanese Unexamined Patent Publication (Kokai) No. 63-136829 discloses a broadcasting station obtained by sweeping which is classified into PTY codes and stored, and the PTY codes are collectively displayed to clarify a type that can be heard by a user. It is to be. These are all the PTYs of the broadcasting station's own station obtained by sweeping.
This is an invention using a code. [0007] The conventional RDS receiver uses the PTY of its own broadcast station obtained by sweeping as described above.
Because the code is used, if you want to listen to the news or want to listen to the classic, for example, if you cannot receive the desired genre by sweeping, you have to give a sweep command again after a certain period of time or repeatedly . TAPE or C
After switching to D or the like, there is a problem that the user is forced to perform a very troublesome operation of temporarily switching to the FM mode and sweeping the desired genre. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. When listening to a relatively unwilling FM broadcast station or another source, a desired PTY FM station broadcasts. When started, an object is to obtain a device that can automatically receive this broadcast. An RDS receiver according to the present invention includes an FM tuner circuit, an RDS decoder for decoding RDS data from an output signal of the FM tuner circuit, and an RDS data of a receiving station. Storage means for storing a frequency list of a network to be used, and a program type code (PTY code) included in the RDS data
A setting unit for setting an interrupt reservation for the second unit, a second storage unit for storing the set program type (PTY), and a PTY code of any other network included in the RDS data of the receiving station. When the PTY matches the PTY stored in the second storage means, a scan is performed in accordance with the network frequency list stored in the first storage means, and if a station whose electric field strength is equal to or more than a predetermined value is detected, and control means for switching the reception of the station, set
A plurality of PTY codes selected by the means are grouped, and
A set of PTY code groups, and the PTY code groups and arbitrary information
And a pair of information stored in the second storage means . An RDS receiver according to the present invention has a plurality of PTY codes.
Code, and the set of PTY codes and the PT
A second storage means for pairing a Y code group and arbitrary information;
Can be stored. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an RDS receiver according to the present invention. 1 is an antenna, 2 is an FM tuner that inputs a signal of the antenna 1 and outputs an FM demodulated signal, and 3 is an L and R signal of the demodulated signal of the FM tuner 2. MPX circuit for separating into 4
Is an amplifier for amplifying the output signal of the MPX circuit 3, and 5 is a speaker. Reference numeral 6 denotes a PLL (phase locked loop) for stabilizing a local oscillation frequency in the FM tuner 2, and reference numeral 7 denotes an RDS decoder for demodulating an RDS modulated signal extracted from a demodulated signal of the FM tuner 2 and decoding RDS data. . 8
Is a dot matrix type display, 9 is an operation unit, 10
Is a storage unit having a first memory and a second memory,
They respectively control the first storage means and the second storage means. 11
Controls each circuit according to a program written in advance by the control unit. FIG. 2 is a front view of the RDS receiver, which includes the display 8 and the operation unit 9. The operation unit 9 includes “P
TY ”button,“ SEL (SELECT) ”button,“ P1 ”
The preset buttons of “P2” are provided. FIGS. 3 and 4 show flowcharts of the main part programs written in the control section 11. FIG.
Hereinafter, description will be made based on this. First, the control section 11 constantly monitors whether or not the operation section 9 is operated. When the PTY button is pressed, the pressing time is counted (S-1 and S-2).
TY is displayed and the timer is reset (S-3, S
-4). Next, when the SELECT button is pressed, for example, the PTY display is sequentially updated cyclically according to the PTY numbers as shown in FIG. 12 (S-5, S-).
6). No. 15 Other Music in FIG. 12 (for example, OTHER
MU) is returned to No. 1 and becomes NEWS. The images are sequentially displayed in this manner. The purpose of this sequential updating is to make it difficult for the user to independently input ten or more types of PTYs, so that the PTYs are sequentially displayed on the display unit 8 so that the operator can see the display and make a selection. is there. Therefore, the operator looks at this display and presses the preset button if there is a desired PTY. When the preset button is pressed in this way, the code corresponding to the currently displayed PTY is stored in the memory area of the second memory 10b corresponding to the pressed preset number (S-7, S-7). -8). If the SELECT button and each preset button are not operated for more than 5 seconds after entering the PTY preset mode and resetting the timer, the PTY preset mode is canceled to enter the normal reception mode, and the station currently receiving is continuously received (S- 9 to S-11). The PTY code stored in S-7 and S-8 is the PTY code determined by the RDS data.
It need not be a TY code. This is intended to enable the RDS receiver to set a PTY other than RDS data in advance. For example, although the RDS data does not have a PTY of "MUSIC", On the other hand, it can be set at once. On the other hand, if the PTY button is pressed for more than one second, the mode becomes the PTY interrupt reservation mode and the "PTY PRI"
At the same time as displaying "O" (PTY PRIORITY: meaning of PTY priority mode), the PTY set at the time of the previous PTY interrupt reservation is displayed, and the timer is reset (S-21, S-22). Next, when the SELECT button is pressed, if it is shorter than 1 second, the displayed PTY is displayed.
Are sequentially updated cyclically (S-23 to S-2).
5). If the SELECT button is pressed for one second or longer, it means that an interrupt reservation has been made with the displayed PTY.
Enters the interrupt waiting mode and displays the frequency of the receiving station (S
-26 to S-28). At this time, "PTY PRIO" is also displayed, and this is a means for notifying by a display that the user is waiting for an interrupt. If the PTY button is pressed in this state, the interrupt waiting mode is canceled and normal reception is performed. At this time, "PTY
The "PRIO" display is also canceled (S-101 to S-1).
03). When the PTY button is not operated, the control unit 1
1 continuously collects information on other networks included in the RDS data sent from the RDS decoder 7, and stores the frequency in the first memory 10a for each network (PI) (first storage means). If the PTY code in the other network information matches the PTY code reserved for interruption, the audio is muted, and the network stations stored so far in the first memory 10a are scanned. If there is an effective station, the reception is switched to that station, the frequency is displayed, and the muting of the sound is released (S-104 to S-110). The above "effective station" indicates a case where the electric field strength is equal to or more than a predetermined value and the RDS data is correct. At this time, "O" is added at the end of "PTY PRIO".
By turning on the display of "N" and turning on "PTY PRIO ON", the fact that an interrupt has actually occurred is displayed on the display (S
-109). Even if the PTY code of another network matches the PTY code of the interrupt reservation, if there is no valid station in the scan of the network, the process returns to the original receiving station (S-107, S-111). On the other hand, when the preset button is pressed in the "PTY interrupt reservation mode", the PTY stored in the memory area of the second memory 10b corresponding to the preset number is displayed (S-31, S-31). -32). If this preset button is used, it is not necessary to cyclically call the PTY with the SELECT button, and the PTY can be easily called. Therefore, it is very convenient to preset frequently used PTYs by the above-described method. The PTY called by the preset button sets the SELECT button to 1
When pressed for more than a second, the interrupt reservation is completed, and the system enters the interrupt waiting mode (S-24, S-26, S-27). When the PTY interrupt reservation mode is entered and neither the SELECT button nor any of the preset buttons is operated for more than 5 seconds after the timer is reset, the PTY interrupt reservation mode is canceled and a normal reception mode is set. Continue receiving (S-33 to S-35). Here, the first storage means (using the first memory 10a) and the second storage means (using the second memory 10a) are used.
b) is shown in the memory map of FIG. The frequency data of the receiving station (AF list) or the frequency list of another network sent by the group type 14A (Type 14A group) is stored in the first storage means. The contents of the memory may include not only the frequency list but also other data. Each of the preset channels is the same as the way the receiving station holds data. Since the preset channel is preset according to the user's will, the preset channel may be a non-RDS station, or the necessary contents may not be preset. Therefore,
Group type 14A (Type 14Agr) as an RDS receiver
In order to memorize the information obtained from oup), it is better to set as much as possible in a memory area called a pool store which is a part of the first storage means with a network frequency list and the like. Embodiment 2 FIG. Next, a second embodiment of the present invention will be described. FIG. 6 is a block diagram of the RDS receiver of the present invention, and 1 to 11 are the same as those described in FIG. Reference numeral 12 denotes an AM tuner which receives a signal from the antenna 1 to obtain an AM detection output, 13 denotes a CD unit, 14 denotes a tape unit, 15 denotes a tape unit 14, a CD unit 13, an AM tuner 12, and an MPX of FM
3 is a source switching section for inputting a signal from 3 and switching an output from the signal to the amplifier 4. Reference numeral 16 denotes an AM PLL section for controlling local excavation of the AM tuner 12. FIG. 7 is an example of a front view of the RDS receiver, which is provided with the display 8, the operation unit 9, a tape insertion port of the tape unit 14, and the like. An “SET” button not provided in the embodiment of FIG. 2 is added to the operation unit 9. 8 and 9 show flowcharts of the main part programs written in the control unit 11. FIG. Hereinafter, description will be made based on this. First, the control section 11 always monitors whether or not the operation section 9 is operated. When the PTY button is pressed, "P
“TY PRIO” is displayed, and the pressing time of the PTY button is counted (S-201 to S-203). If the pressing time is longer than 1 second, a plurality of (sometimes one) PTYs at the time of the last PTY interrupt reservation are sequentially displayed on the display unit 8, and then the "PTY" is displayed using the dot matrix display.
SET? Is displayed (S-204, S-205). On the other hand, if the pressing time of the PTY button is 1 second or less, the timer is reset and the preset button and the SELE
The operation of the CT button is monitored (S-211, S-212, S
-214). When the preset button is pressed, after sequentially displaying the PTY stored in the memory area of the second memory 10b corresponding to the preset button on the display unit,
"PTY SET?" Is displayed (S-212, S-2
13, S-205). When the SELECT button is pressed, each time the SELECT button is pressed, for example, the PTY as shown in FIG.
The PTY display is cyclically updated in order according to the numbers of (1), and each time, the timer is reset (S-214).
S-216). If neither the preset button nor the SELECT button is pressed for more than 5 seconds, the PTY interrupt reservation mode is canceled (S-212, S-214, S-231, S-23).
2). After the SELECT button is pressed, the PTY button
If it is not pressed for more than one second, the PTY interrupt reservation mode is similarly released (S-217, S-241, S-24).
2). When the PTY button is pressed, the pressing time is counted, and when the PTY button is pressed for 1 second or less, it is determined whether the currently displayed PTY is set as an interrupt target. In the case of a target, the target (S-21)
7, S-218, S-220 to S-222) and SE
Continue monitoring the LECT button. Whether or not the displayed PTY is set as an interrupt target is notified to the user by simultaneously displaying an “*” mark or the like at the beginning or end of the displayed PTY. S
If the PTY button is pressed for more than 1 second after the ELECT button is pressed, the PTY set as an interrupt target at that time is sequentially displayed, and then "PTY SET?"
Are displayed (S-214 to S-219, S-205). When "PTY SET?" Is displayed,
The timer is reset to monitor the operation of the preset button and the SET button. When the preset button is pressed, the contents of the memory area of the second memory 10b corresponding to the preset button are cleared, and the currently set PTY is set. The pattern is stored in the memory area, and the timer is reset again (second storage means) (S-251 to S-254). S
When the ET button is pressed, the mode changes to the interrupt waiting mode and the “P
The frequency of the receiving station is displayed while the display of "TY PRIO" is continued (S-255 to S-257). If neither the preset button nor the SET button is operated for 5 seconds after the timer reset, the PTY interrupt reservation mode is released (S-261,
S-262). When the PTY button is pressed in the interrupt waiting mode, the interrupt waiting mode is released and the "PTY PRI"
The "O" display is canceled (S-301 to S-303). In the interrupt waiting mode, the control unit 11 continues to collect information on the own station or another network included in the RDS data sent from the RDS decoder 7, and stores the frequency in the first memory 10b for each network (PI). (First storage means). If the PTY code in the information of the own station or another network matches the PTY for which the interrupt reservation has been made, the mode of the source switching unit is checked. If the selected station is the own station, "PTY PRIO ON" is displayed (S-311).
~ S-314). If it matches the PTY of another network, mute the sound and scan according to the frequency list (AF list) of the network (PI) stored in advance, and tune to the valid station if any At the same time as receiving, the frequency and "PTY PRIO
"ON" is displayed to cancel the audio mute (S-31
3, S-321 to S-326). If there is no valid station,
PTY while canceling the audio mute and receiving the current station
Continue interrupt waiting mode (S-323, S-32
7). If the PTY of the own station or another network matches the PTY of the interrupt reservation, and if the mode of the source switching unit is selected other than FM, scanning is performed according to the AF list of the PI station that matches the PTY of the interrupt reservation. Is performed, and if there is an effective station, the effective station is tuned and received, and then switched to the FM by the source switching section 15, "PTY PRIO ON" and the frequency of the effective station are displayed (S-312, S-331).
~ S-334). Although not shown, a short-time mute is applied at the time of source switching for the purpose of preventing switching noise. If the scan is performed and there is no valid station, the interrupt wait mode is continued with the current source (S-332). As described above, according to the present invention, the RDS
Combine data that is not in data with multiple PTY codes
Can be set and stored as a pair.
When setting reservations for data, data that is not in the RDS data
Set PTY codes that have been set and stored in one set
There is an effect that can be . Further, since a plurality of desired programs can be reserved by a series of operations, the reservation can be simplified, and there is a case where a problem occurs that the desired program is reserved for interruption but the interruption is not actually taken. There is
In this case, you can make reservations for a number of desired programs,
Such a defect is almost eliminated. [0051]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit block diagram of an RDS receiver according to one embodiment of the present invention. FIG. 2 is a front view of an RDS receiver according to one embodiment of the present invention. FIG. 3 is an operation flowchart of the RDS receiver according to one embodiment of the present invention; FIG. 4 is an operation flowchart of an RDS receiver according to an embodiment of the present invention. FIG. 5 is a memory map of a storage unit according to the embodiment of the present invention. FIG. 6 is a circuit block diagram of an RDS receiver according to another embodiment of the present invention. FIG. 7 is a front view of an RDS receiver according to another embodiment of the present invention. FIG. 8 is an operation flowchart of an RDS receiver according to another embodiment of the present invention. FIG. 9 is an operation flowchart of an RDS receiver according to another embodiment of the present invention. FIG. 10 is a configuration diagram of RDS data. FIG. 11 shows a group type 14A (Type) of RDS data.
14A group). FIG. 12 is a diagram showing a program type code and its program type. [Description of Signs] 1 Antenna 2 FM tuner 3 MPX unit 4 Amplifier 5 Speaker 6 FM PLL unit 7 RDS decoder 8 Display unit 9 Operation unit 10 Storage unit 10a First memory 10b Second memory 11 Control unit 12 AM tuner 13 CD unit 14 Tape unit 15 Source switching unit 16 AM PLL unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H03J 7/18 H03J 5/02 H04B 1/16

Claims (1)

(57) [Claim 1] An FM tuner circuit, and an RDS for decoding RDS data from an output signal of the FM tuner circuit
A decoder, first storage means for storing a network frequency list included in the RDS data of the receiving station,
Setting means for setting an interrupt reservation for a program type code (PTY code) included in S data; second storage means for storing the set program type (PTY); When the PTY code of any other included network matches the PTY stored in the second storage means, the first
Control means for performing a scan in accordance with the frequency list of the network stored in the storage means, and switching to reception of that station only when a station having an electric field strength of a predetermined value or more is detected among the scanned reception stations. With the above
A set of a plurality of PTY codes selected by the setting means is provided.
A set of PTY codes and this PTY code
Can be stored as a pair in the second storage means.
An RDS receiver comprising: