JPS5870619A - Receiver with station name display function - Google Patents

Abstract

PURPOSE:To quickly select and confirm a desired broadcast station, by displaying the station name during reception at present together with a reception frequency. CONSTITUTION:An 8-bit microprocessor 30 receives a reception frequency data during reception at present from a 4-bit microcomputer for radio tuner control (for PLL synthesizer control) via an I/O port 36 and stores the data to an RAM 35. Encoded broadcast station names corresponding to reception frequencies are stored in a broadcast station name map ROM 33. The reception frequency is set to an index register, the content and the frequency data in the ROM 33 are sequentially compared, and when they are coincident, the broadcast station name code is read out, the head address of a character generator ROM 34 is indexed from the broadcast station name code and inputted to a display device 38, and the broadcast station name is displayed on a display device 9 together with the reception frequency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a radio receiver capable of displaying all names of broadcasting stations currently being received.

Conventional radio receivers listen to the broadcast station they are receiving.
It was indicated by the i needle, but with this method, if there are adjacent stations, etc., it is difficult to tell which station is the desired broadcasting station. Therefore, there is a trend in recent radio receivers using electronic channels to adopt digital display methods so that the received frequency can be viewed directly.

1mm diameter, 4 bits 1 for radio chainer control (PR, R, synthesizer control) = ambiator (hereinafter 4
10 is a block diagram of the main parts of a radio receiver using an electronic tuning method (abbreviated as BIT microcomputer), 10 is an antenna;
11 is high-frequency technology increase @ Junro, 12 Mining gate, 13 Hirochu frequency amplification circuit, 14a detection circuit, 15 wire power amplification 11j1
% 16a speaker, 17 is local vibration connection, 18 is P
IC for LL, 19 is 4 bit micron, 20 Hiro key h1
There is a group of operation keys consisting of 2o, and a 21lo display device.

FIIIK>E c, px, x, zc 1a color 0 [
11m! The tuning frequency of the high frequency amplification path 11 and the oscillation layer m@Io of the local oscillation circuit 18 are controlled, and radio waves from a desired broadcasting station are selected for reception, intermediate frequency amplified, and sent to the detection circuit 14 and power amplification. It is led to a speaker 16 via an enclosure 15. The 4-bit microcomputer 19 has a channel selection function that operates in response to the operation of the operation key group 20, and outputs necessary frequency division ratio setting data (N value) to PLL 1 to 141, and also outputs it to the display device 21. Sends frequency data and displays received frequency. As the 4-bit microcomputer 19, for example, 9124AP is adopted as the controller 'I' for Toshiba's yu/Am synthesizer chainer, and the I for PLL.
For example, C-MOS LJ for Toshiba gILL can be expanded as Cl3.
I To 9125F is adopted.

The 4-bit microcomputer 19 operates in synchronization with internally generated timing signals 11 to T4, and input terminals (
Duck, ~4%5 and output terminal m5tt~O%ta B are used for different purposes at each timing 11~T4.

That is, the keys in the same row of the operation key group 20 are connected to the same input terminal, but their output timings are controlled by the column selection timing signals 11 to T4, and for example, the timing as shown in FIG. When signal 11 is on, press 1 on the key
Only the information ~ha is input to the input terminal 4%1~4sB. Similarly, when the other timing signals T2 to ra are on, only the information of the keys in each column of Hiro is input to the input terminal 4ss.
~4% input to $.

Then, the 4-bit microcomputer 19 reads the input information of the input terminals 4I & 1 to -1 at each timing and inputs all the keys h1 to h1 to -1.
h, o information is obtained. In addition, in the case of outputting frequency data, for example, the output information at timing T1 indicates the reception frequency data of the minimum digit, and the timing '*t r
. For example, when displaying pH815MHz t-, O output terminal %
The relationship between the outputs of t1 to 0% t4 and the timing signals 11 to T4 is as shown in FIG. 5, for example.

In radio receivers that can display the reception frequency digitally, it has become easier to tell whether or not the desired broadcasting station is available (as opposed to the conventional pointer display). However, this is only possible if the user himself/herself knows the frequency of the broadcasting station.
If you do not know, set the number to 1 and it will be difficult to select the desired broadcast J60.

The present invention improves these conventional drawbacks, and
The purpose of this is to display the frequency of the broadcasting station currently being received together with the reception frequency, thereby making it possible to quickly select and accurately receive the desired broadcasting station. Examples will be described in detail below.

FIG. 4 shows the main blocks of a radio receiver according to an embodiment of the present invention, which is equipped with a broadcasting station name display function. In the figure, Tob, the same reference numerals as 114111 indicate the same parts, 30 is a general-purpose 8-bit microprocessor, and 31 is a general-purpose 8-bit microprocessor. Its address, data and control node, 32 variable routine EOM, 56 a broadcasting station name map EOM, 541d character generator EOM for alphabets, katakana, etc.

ss ha RAii, 56B input/output interface circuit example pueral interface adapter (
57 is an AND circuit, 38 is an LCD (liquid crystal) driver, and 39 is an LCD display.

In the figure, a 4-bit microcomputer 19 and an 8-bit microprocessor 50 have I/Q, j? -) 56 t8
It is directly connected using That is, the yII4tIIL number data output terminal of the 4-bit microcomputer 19, the data output terminal 4, the output terminals of the timing signals T1 to T4, and the I robot 3.
An AND circuit 37 is provided to which the input terminals 11 to I of 6 are connected, and which receives the timing signals T and -Ta as inputs.
SoO output t I10 port 56 interrupt signal input terminal IN
I am inputting it into T. 4-bit microcontroller 19 d PLL
It can operate independently for control without any synthesis, as described above (operates in synchronization with independently generated timing signals T1 to T4.
0 also 4-bit microcomputer 19 and others OHA, Id'
Microphone H for tJ set deck control: 2mm for
Management of data (ml not shown), etc. can be done in synchronization with your own timing. Therefore, it is necessary to establish synchronization between the two, and in the case of the present invention, this is achieved by the program processing of the SAS A-bit microprocessor as follows.

That is, for example, as shown in sswA, a 4-bit microcomputer 1
Period l# in which all timing signals of 9 are off, even if only slightly.
1. When t2 is determined, the output waveform of the AND circuit 57 is as shown in the UGS diagram, and its falling edge coincides with the rising edge of the new timing signal. Therefore, by interrupting the 8-bit microprocessor 50 at the falling edge of the output signal of the AND circuit 37, it is possible to notify the t-8-bit microprocessor 301C that the timing signals 11 to T4 of the 4-bit microcomputer 19 have changed. . Then, during the interrupt processing of the 8-bit microprocessor 30, the timing signals T1 to Tat of the 4-bit microcomputer 19 are input to determine the current timing, and the frequency data of the 4-bit microcomputer 19 is input as shown in FIG. The frequency data output from the output terminals 0%t1 to 0%t4 is established and the data tI/Q boat 56t- is established.
It is possible to synchronize the two by reading the information via the FIG. 6 is a flowchart of the above-mentioned operation, and the determination of the timing signal is made using the upper 4 bits of the 8 input bits, and the lower 4 bits are masked. Furthermore, to store the determined reception frequency data in the RAM 55, only the lower 4 bits are used and "0" is inserted into the upper 4 bits, using a 4-byte memory area, for example, as shown in FIG. Let's do it.

When the frequency of the broadcasting station currently being received is detected by the 6-bit microprocessor 5o in this way, the name of the broadcasting station is detected and displayed in the following manner.

The broadcasting station Narumag EOM 55 stores the broadcasting stations 4 in advance in correspondence with the receiving frequencies, so that, for example, the two broadcasting stations of the KIN frequency band and the 1M frequency band are stored as shown in the following table. [Four maps are available. Same, the station name is the coding ratio and Jll
l coded p, FMNHK O case 46.4D
, 4ff, 48.4J.

11th! When the FM frequency control 6-bit microprocessor 50 is activated, for example, as shown in the flowchart of 8g,
Set L in the index register (4X, Rey), and write its contents and broadcast station name map Oj1 in EOM As.
Compare the axillary count data with the application. That is, as shown in Figure 9, the broadcasting station name map ROM 35K is 2/(item frequency fIIL number storage area, followed by 10 bytes of encoded major broadcasting station winter, so the index
Then, the contents of register iX<H) and 4X(L) are compared with the frequency data. Then, the matching Bakura Km broadcasting station name code is read out and transferred to the broadcasting station name storage area I/c. Figure 10-, (h) Roar, 1008KJfz.

$5. An example of the state of the above comparison operation when receiving an IMf island is shown. Homemade rattan 10 diagram ω is oi if there is no match
The end of the conversion table is determined by the FIPI"! code, and the space code is exposed.

9. The receiving frequency structure in the radio preset list is 85 for example when 1M band preset.
．． 1AM band preset time/Curved surface example F! Since 10 times 8, it is possible to determine the receiving band by adding a - line and depending on whether the circle character is a decimal point or not, and by doing so, it is possible to identify the unit code of the receiving frequency. be. That is, -
When the line part is a decimal point, (MHz) is read from the ROM area shown in FIG. 11, and when it is 0 to 9, (fJfz) is output. FIG. 12 shows a flowchart of this operation.

Now, the 8-bit microprocessor 30 determines the start address of the character generator ROM 34 from the nine broadcast station disease codes obtained as described above, reads out characters for display, and inputs them to the LCD driver 38. Also,
Reception frequency data and frequency unit data are also processed in the same way. As a result, the broadcast station name is displayed on the LCD @ indicator 59 along with the received frequency. In this embodiment, a KLCD display is used as the display, but it goes without saying that other display types may be used, such as a CRT display. If a CRT display is used, Video II
Additional hardware such as an AM and CRT drive synchronization signal generator is required.

After the receiving band is first determined by the operation shown in FIG. 12, the search for the broadcasting station name may be performed only on the broadcasting station name map of that band.

No. 131il shows an operation flowchart at that time.

It should be noted that the routine 110M52 in the 4th @ contains a program for causing the 8-bit microlog 47 processor 50 to perform the above-mentioned series of operations, a program for operating the 1-station board 56, and other programs. There is.

For example, Idl'MO82,5MIk is JINX Kyo in the Tokyo area, and I'm NH in the Nagoya area.
K″'asru.

If there are a plurality of broadcasting station names in the same frequency fIL number in ζOY5, it is necessary to select them. This kind of problem occurs when the radio receiver searches the in-band tube and selects the frequency a't received at 9 o'clock.
You can solve the problem by making a list and judging from the context. For example, the situation within the I'M band in the Nagoya area is as follows:
-) is 7, and the Tokyo area is as shown in the following table (1)K, so when 82.5 MHzt- is received, it is assumed that 8α7Jiffmt- was previously received or 8αOMEz
It can be determined whether the person is mourning in the Nagoya area or the Hirotokyo area.

#I 2 Table As can be seen from the above description, according to the present invention, the name of the broadcasting station is displayed along with the receiving 4G frequency, making it possible to quickly select and confirm the reception of the desired broadcasting station. Therefore, it is very effective if the present invention is applied to a receiver mounted on a radio receiver or the like.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the main parts of a radio receiver using a 4-bit microcomputer and employing a nine-electronic tuning system, Figs. 2E and 3 are timing charts for explaining its operation, and Fig. 4 is a radio receiver O11 according to an embodiment of the present invention. FIG. 5 is a timing chart for explaining its operation, and FIGS. 6, 8, 12, and 15E are 8-bit block diagrams. Seventh operation flowchart of microprocessor 30
This figure is a block diagram of the receiving frequency data storage 110M, FIGS. 9 and 10 are diagrams explaining the operation of broadcasting station name search, and FIG. 11 is a block diagram of the frequency unit storage ndw. 19 is a 4-bit microcomputer, 20 is a group of operation keys, 50 is 8
bit microprocessor, 32 is a routine ROM,
55 Broadcast station name map ROM, 34 character generator EOM, 56- I10 port, 38
Expanded LCD driver 39 is an LCD display suspect. Patent applicant: 1 person from outside Fujitsu Ten Ltd. Attorney: Patent attorney Tamamushi K. 5: 3 people from outside the company Figure 2 Figure 3 Figure 5 Figure 4! "1-

Claims (1)

[Claims] A radio receiver equipped with a radio tuner control microcomputer capable of digitally displaying a reception frequency and employing a nine-electronic tuning system includes a broadcast station name map ROM that stores a broadcast station name encoded in correspondence with the reception frequency; A character generator ROM that converts coded broadcast station base display characters read from the station name map ROM, a display that displays characters not used in the table, and a display that controls these characters to display broadcast stations corresponding to the receiving frequency. A radio receiver having a function of displaying the name of a broadcasting station, further comprising a microprocessor that sequentially outputs the name of the broadcasting station from the map ROM of the broadcasting station and displays the name on the display.