JPS605632A - Radio receiver - Google Patents

Abstract

PURPOSE:To improve operability in a radio receiver that reports the name of selected broadcasting station by voice by outputting only the name of broadcasting station of relevant area when the same frequency is used by plural stations in common. CONSTITUTION:When selection completion signal S1 is received from a digital electronic tuner 10, an editing circuit 12 takes in receiving broadcasting frequency data FD at that time, and accesses a look up table 14 that stores the name of broadcasting station dividing it into paragraphs making the data FD an address. When there are plural broadcasting stations of frequency FD, the circuit 12 refers to the table of broadcasting station by area No. and frequency of the table 14 and reads out information of the name of broadcasting station SI. Then, it accesses voice data ROM20 of a voice synthesizing circuit 16 making the information SI an address. The circuit 16 inputs the data from the ROM20 to a signal processor 22 through a synthesizing controller 18 to change frequency characteristic. This is converted to analog voice signal by a D/A converter 24 and the name of broadcasting station of the area is announced from a speaker.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a radio receiver having a function of audibly announcing the name of a selected broadcasting station, and in particular, when the same frequency is allocated to multiple broadcasting stations, It is intended to output only the name.

Improving operability is important for car radios, and for this reason, receivers that perform mechanical channel selection usually include a push button for directly specifying the desired station in addition to a rotary dial. There are two types of electronic broadcasting types: the digital tuning type, which specifies the broadcasting station (more specifically, its frequency), and the search tuning type, which gradually increases and decreases the designated reception frequency and stops changing the frequency when the desired station is received. In this case, it is difficult to tell whether the received broadcast wave is from the desired station without looking at the frequency display, which can interfere with driving. In the former type, a desired broadcasting station can be selected by pressing one of a plurality of pushbuttons, similar to the pushbutton type, but selection of the broadcasting station requires selection of the pushbutton.

The present invention is a radio receiver that announces the name of a broadcasting station by voice when a channel is selected, and is capable of outputting only the name of the broadcasting station in the corresponding area, especially when the same frequency is shared by multiple broadcasting stations. It is something to do. If this method is applied to a search channel selection type radio receiver, the listener will be able to select the desired station by simply instructing the car to start searching, and this has the advantage that it does not particularly interfere with driving even when used in a car. have

This will now be described in detail with reference to embodiments shown in the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, 10 is a digital electronic tuning tuner of a radio receiver, and although not shown, as is well known, it includes a high frequency amplification section, a local oscillation section, a frequency mixing section, an intermediate frequency amplifier, and a PLL.
It has a built-in channel selection circuit. If the tuning circuit is a digital tuning type, the tuning circuit includes a memory that stores the broadcast frequency information of each broadcast station,
A selection switch that indicates any desired one of the broadcast frequency information, a comparator that compares the selected broadcast frequency information and the local oscillation frequency (more specifically, a frequency division thereof), and a comparator that detects a mismatch. In the case of a search channel selection type, the output of the local oscillation frequency change circuit and intermediate frequency amplification section is used to temporarily change the local oscillation frequency when receiving broadcast waves. It consists of a circuit that permanently stops the operation. Reference numeral 12 denotes an editing circuit, which is composed of, for example, a microcomputer, and when it receives the tuning completion signal S+ from the intermediate frequency amplification stage or comparator of the tuner 10, it extracts the received broadcast frequency data at that time, specifically local oscillation frequency data FD. It's crowded. Reference numeral 14 denotes a look amplifier (reference) table, which is composed of a ROM (read-only memory) and stores each broadcast station name information and its broadcast frequency information.

Broadcasting station names are relatively long, such as NHK Tokyo 1st Broadcasting, Chubu Nippon Broadcasting, etc., and if you add "dezu" to announcements, it becomes even longer, so "Chubu", "Nippon J", "Broadcasting", etc.
Memorize each phrase. The editing circuit engineer 2 accesses the table 14 using the frequency data FD taken in from the tuner 10 as an address, and reads out the broadcasting station name information corresponding to the data for each clause. For example, n, n+1 in table 14,
The above-mentioned phrases "Chubu", "Japan", and "Broadcasting" are stored in the n+2 address (in detail, not these words, but the memory address of the speech synthesis circuit described later), and the editing circuit 12 stores the frequency data FD. The table 14 is accessed by outputting the first address n, and further outputting a predetermined number of subsequent addresses, n+1 and n+2 in this example. The broadcasting station name information SI read out from table 14 in this way is the voice synthesis image 1i.
'&16, and outputs the synthesized voice output SVO.

In this example, the speech synthesis circuit 16 is of the Percoll type.
It includes a synthesis controller 1-0-ra 18, an audio data memo 1J20, a signal processor 22, and a D/A converter 24. The memory 20 is also composed of a ROM, and stores audio data for each phrase. The lk transmission name information S memory 2
0 address.

For example, the information is "Chubu", "Japan", "Broadcasting"
If so, these become address signals for the storage area of the memory 20 that stores the audio data corresponding to the phrase, and the data is output one after another. This inputs the signal to the signal processor 22 via the synthesis controller 18, and changes the frequency characteristics of the processor 22, which is a digital filter. Although not shown, an impulse or random noise is inputted to the processor, and when it passes through the filter 22 whose frequency characteristics have been changed by the audio data, the output becomes a digital audio signal representing each phrase, and the output is a digital audio signal representing each phrase. D.A.
When converted, an analog audio signal sV.

becomes. This is input to the low frequency amplification section of the radio receiver, and the sound is emitted from the speaker.

One broadcasting station does not necessarily correspond to one broadcasting frequency, and broadcasting stations in multiple regions that are far apart from each other may use the same broadcasting frequency. The table below shows an example of assigning the same frequency to multiple stations.
) 7 stations on lx, 2 stations on 1233KHz, 1269KH
2. 2 stations, each with the same frequency in an area that is far enough away from each other to avoid interference. 1. 1. Thoughts: Those marked with an asterisk (*) are not broadcasting stations. The present invention uses such frequencies (hereinafter referred to as multi-station frequencies).
When receiving a broadcast, the name of a broadcasting station only in that area can be announced. FIG. 2 is an explanatory diagram of the main part, and FIG. 3 is the entire flowchart 1-. According to the flow shown in FIG. 3, first, when the tuner 10 outputs the tuning completion signal S1, the editing circuit 12 outputs the frequency data F at that time.
Load D. The contents of the next judgment step A and processing step B are shown in FIG. In the example in Figure 2, the FD is 1008
(KHz) is taken as an example. When receiving frequency FD=1008 is given, editing circuit 12 refers to broadcasting station number table 14A of lookup table 14.

In this table 14A, the number N of broadcasting stations and the start address of the look amplifier table (here, pointing to the next small station frequency table 14B) are written in the area whose address is the corresponding frequency FD. In this table 14B, the frequency data (this is called a small station frequency) when there is only one broadcast station per broadcast wave is stored as an address, and the district number where the broadcast station is located is stored, so the frequencies match. If you do this, it can be determined that it is a small station, and you can immediately move on to editing the speech synthesis ('l'lJ IfI step C and below in Figure 3).
,.

However, if the number N of broadcasting stations for frequency FD is 2 or more, a comparison with table 14B will not result in a match (there is no match in this table). In this case, the process proceeds to step B. Second
The flow in the figure shows this part in detail. That is, +1
(1) If the local station frequency of the area is preset in the preset memory, compare it with table 14B to determine area No. 1, or (2) automatically perform channel selection operations such as scanning and set FD= The area is identified by receiving a frequency different from 1008. The RAM in FIG. 2 is a random access memory that stores several frequencies received in this way, FDa and FDb.

. . . is the frequency received at that time. Next, this frequency data FDa, FDb, . . . is compared with table 1'4B, and if there is a match, the district number is not read out. And this district NO9 and FD
=1008 when referring to the broadcasting station name table 14G,
You can know the name of the broadcasting station only in the corresponding area from among the multiple frequencies. After this, the process moves to voice synthesis processing similar to that for the local frequency.

From step C onward in FIG. 3, all broadcast station names are not announced as they are read, but some are output as frequencies. That is, there are many broadcast station names, and it is not economical to prepare all of them in the look amplifier table 14 and the audio data memory 20. Therefore, it is preferable to announce the station names of representative broadcasting stations, and announce the frequencies of the others. In this case, the lookup table 14 and the audio data memory 20 contain [500 Jr90 Jr3jr
Audio information for phrases such as KHzJ is also prepared.

By the above-described method, the name of a broadcasting station can be known from the received frequency, and even if there are multiple broadcasting stations for one broadcasting frequency, the announcement can be made to the user without error. The method described above was to select a receiving area from the receiving frequency and frequencies in the recent memory or frequencies that can be searched and stopped by scanning, etc., and announce only the name of the broadcasting station in the corresponding area. It is also possible to use other systems that can detect lightning in the reception area as shown in the other embodiment shown in FIG.

30 in Fig. 5 is a navigation system that displays a road map on the screen and sequentially displays the driving route of the car (including UL tracks, etc.), but this system is designed to display the current location of the car. have information. Therefore, if this is used as a receiving area code similar to the previous area NO0, the station name can be immediately announced when selecting a station.

As described above, according to the present invention, when a channel is selected, the name of the broadcasting station is announced, and there is no need to visually check the frequency or the station name display, so it does not interfere with driving, especially when using a car radio. This is very suitable as it does not cause any problems. In particular, even when the same frequency is assigned to multiple broadcast stations in different regions, there is no need for the user to manually operate the region selection switch, etc., which significantly improves operability (on expressways every 2 to 3 hours). It is also advantageous that there will be no erroneous announcements caused by forgetting to do so.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing one embodiment of the present invention, Fig. 2 is an explanatory diagram of the main parts thereof, Fig. 3 is an overall flowchart, and Fig. 4 is a block diagram showing another embodiment of the invention. be. In the figure, 10 is a digital electronic tuning tuner, 12 is an editing circuit, 14 is a look amplifier table, 16 is a voice synthesis circuit, and 30 is a navigation system. Applicant Fujitsu Ten Ltd. Representative Patent Attorney Toshizo Aoyagi: 'H'J tj diagram

Claims (1)

[Scope of Claims] A look amplifier table that stores broadcasting station names separated by phrases; and a digital electronic tuning tuner that receives a tuning completion signal from the tuner and captures received broadcasting frequency data from the tuner; an editing circuit that accesses the look amplifier table using the look amplifier table and sequentially reads received broadcasting station name information for each phrase, and receives the received broadcasting station name information for each phrase sequentially and outputs a synthesized voice of the received broadcasting station name The editing circuit is further equipped with a function for selecting the name of the broadcasting station in the corresponding area based on regional information when multiple broadcasting stations are assigned to one broadcast frequency. A radio receiver characterized by: