JPH1093456A - Fm multiplex receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the FM multiplex receiver in which required information is easily confirmed based on teletext information of each page in an FM multiplex broadcast. SOLUTION: A dot matrix type liquid crystal display element having a display area 81 of longitudinal 64-dot × lateral 248-dot is used for a display section. An upper 8-dot area is a header text area 81a on which a title or the like of teletext information is displayed and the other 56-dot area is a text area 81b to display a content of the teletext information. The main text area 81b is made up of a 1st line 81b1 of the main text in 32 dots, an 8-dot space 81b2 and a 2nd line part 81b3 of the main text in 16 dots. One character is displayed in longitudinal 8-dot × and lateral 8-dot in the header text area 81a, and one character is displayed on the 1st line part 81b1 for the main text area in longitudinal 32-dot × and lateral 16-dot and on the 2nd line part 81b3 in longitudinal 16-dot × and lateral 16-dot respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FM multiplex receiver.

[0002]

2. Description of the Related Art At the time of program broadcasting of a general FM broadcasting station, character information signals of a program (complementary program) related to the program contents and a program (independent program) not related to the program contents are used by using a gap between FM broadcasting waves. F to multiplex and transmit
FM multiplex receivers that receive M multiplex broadcasts and display the character information on a display unit have been put into practical use (for example, see Japanese Unexamined Patent Application Publication No.
-79206).

The structure of the program in FM multiplex broadcasting is as follows:
It has a tree structure, and the specific contents of each program indicated by the submenu are described as character information below the upper hierarchical program such as the main menu program and the submenu program classified by type in this main menu program. A plurality of pages to be displayed are continued. Each page is composed of a header sentence and a main body, and the main body is 15 characters and displays a total of 30 characters of two lines at one time, and there is a next page in the same program. In this case, the screen is scrolled to display the next page.

A display section of such an FM multiplex broadcast generally uses a dot matrix type liquid crystal display element. Specifically, as shown in FIG. 4, a display section 04 is 64 dots vertically by 248 dots horizontally. The upper 8-bit area has a header text area 04a for displaying the title of character information, the number of pages, and other information.
The dot area is a body area 04b for displaying the contents of character information. The body area 04b is from the top,
An 8-dot blank portion 04b1, a 16-dot text first line portion 04b2, an 8-dot blank portion 04b3, a 16-dot text second line portion 04b4, and an 8-dot blank portion 04b5. Then, the header sentence area 04
In a, one character is displayed by 8 dots vertically and 8 dots horizontally, and in each line portion 04b2 and 04b4 of the body area, 16 characters vertically are displayed.
One character is displayed by dot × 16 dots.

[0005]

As described above, the display unit 0
4 is not necessarily good visibility in displaying a total of 2.5 lines of 2 lines of the text and 0.5 lines of the header text (the height of the header text is half the height of the text). 04 can be read only instantaneously rather than continuously, the first and second lines of the text may be read in the middle, and there is room for improvement in visibility. Was.

SUMMARY OF THE INVENTION An object of the present invention is to provide an FM multiplex receiver capable of easily confirming necessary information from character information of a page in FM multiplex broadcasting.

[0007]

SUMMARY OF THE INVENTION The present invention provides an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves, and the FM information is displayed in a plurality of lines on a display unit. In the multiplex receiver, the display unit has a header sentence area for displaying a title of the character information and a body area for displaying the contents of the character information, and the body area includes two lines of the character information. , And the characters in one line of the body area are double-width characters of the characters in the other line,
Change the character of the header sentence area to the character of the other line.
It should be a one-byte character.

Further, the present invention relates to an FM multiplex receiver for receiving an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves and displaying the text information on a plurality of lines on a display unit. The display unit displays the contents of the character information with different character sizes for each line.

Further, the present invention relates to an FM multiplex receiver for receiving an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves and displaying the text information in a plurality of rows on a display unit. The display unit displays the content of the character information with the size of the character on one specific line being different from that on another line.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The display section 8 has 64 dots vertically and 2 dots horizontally.
A dot matrix type liquid crystal display element having a display area 81 of 48 dots is used, and includes a header sentence area 81a for displaying a title of character information and the like, and a text area 81b for displaying the contents of the character information. The text area 81b displays the character information in two lines, and the first character located on the upper line, which is one line of the text area 81b, is displayed on the lower line which is the other line. The characters are double-height characters of the eyes. According to this, even when the display unit 8 can be read only instantaneously rather than continuously, it is easy to determine from the fact that the size of the characters in the first and second lines of the text is different. Can be prevented from being read by mistake in the middle, and the visibility is improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 shows a frame structure of a digital signal multiplexed on an FM broadcast signal of FM multiplex broadcasting.
One frame is composed of 272 blocks, and at the beginning of each block, one frame is used for reproduction of frame synchronization or block synchronization.
A 6-bit BIC (Block Identification Code) is added. Of the 272 blocks, 190 blocks are data transmission packets for transmitting data, and 82 blocks are parity packets for transmitting parity in the column direction. , BIC, followed by a 176-bit data packet and a 14-bit CRC (Cyclic R).
edundancy code) and an 82-bit parity.

FIG. 2 shows a configuration of an FM multiplex receiver for receiving the FM multiplex broadcast in which the digital signal of FIG. 1 is multiplexed, wherein 1 is an antenna for receiving the FM multiplex broadcast, and 2 is a reception connected to the antenna 1. The circuit 3 is a detection circuit connected to the reception circuit 2, and the reference numeral 4 is a decoding circuit connected to the detection circuit 3. The decoding circuit 4 demodulates a digital signal having a frame configuration shown in FIG. The demodulated digital signal is synchronously reproduced in accordance with the BIC by an error correction circuit 6 with synchronous reproduction controlled by a microcomputer (microcomputer) 5 and error-corrected in accordance with a parity code. The microcomputer 5 has a core CPU 51 and a ROM storing programs.
52, ROM 53 storing character fonts, RA for temporarily writing digital signals given to microcomputer 5
The digital signal having M54 and sent to the microcomputer 5 is
Processing is performed by a program stored in the ROM 52 based on the operation of the operation unit 7, and the resulting character information is displayed on the display unit 8.
Is displayed with. The operation unit 7 includes a power key 71 and a tuning key 7.
2, up key 73, down key 74 for moving between lines and between layers of the text, front key 75, rear key 7 for page scrolling
6. It has a selection key 77.

As shown in FIG. 3, the display section 8 uses a dot matrix type liquid crystal display element having a display area 81 of 64 dots vertically by 248 dots horizontally, and a header text for displaying a title of character information and the like. And a body area 81b for displaying the content of the character information,
The text area 81b displays the character information in two lines, and the first character located at the upper position, which is one line of the text area 81b, is positioned at the lower position, which is the other line.
A double-width character of the character on the line, and the header sentence area 81a
Is a quarter-width character of the character on the second line. That is, in the display unit 8, the upper 8-dot area serves as a header sentence area 81a for displaying the title of the character information, and the other 56-dot areas serve as the body area 81b for displaying the content of the character information. The text area 81b includes, from the top, a first-line portion 81b1 of a 32-dot text, a blank portion 81b2 of an 8-dot text, and a second-line portion 8 of a 16-dot text.
1b3. And the header sentence area 81a
In the text area, one character is displayed by 8 dots by 8 dots. In the first line portion 81b1 of the body area, one character is 32 dots by 16 dots by 16 dots in the second line portion 81b3. Is displayed.

According to this embodiment, even when the display unit 8 can be read only instantaneously rather than continuously, the size of the characters in the first and second lines of the text is different. It is possible to easily discriminate, it is possible to prevent the reading from being mistaken in the middle, and the visibility is improved.

In particular, the character size of the line (the second line) where the character size is not changed remains unchanged from the conventional one, and the effect of making the character size different between the first and second lines of the text. There is no. In addition, two lines are displayed as in the related art, and the contents can be easily grasped.

Further, as a method of making the size of the characters of the first line and the second line of the body different, the characters of one line (the first line) of the body area 81b are replaced with the characters of the other line (the second line). Characters are double-width characters, and this method can be used to create characters on both lines by processing data of this character font in software without separately preparing a character font stored in the ROM 53, Since the capacity of the ROM 53 does not need to be increased, there is an advantage that a large increase in cost is not caused.

The present invention is characterized in that the contents of the character information are displayed with the size of the characters varied for each line, and the present invention is not limited to the above embodiment.

For example, when the display section 8 is a display element having a larger area than that of the above embodiment, the contents of the character information can be displayed in three or more lines. The same effect as in the above-described embodiment can be obtained by displaying the size of a different line from that of the other lines. Even in such a case, the vertical size of another character (the character on the first line in the above example) is set to be an integral multiple of the reference character (the character on the second line in the above example). As a result, the number of characters to be displayed is not changed from the conventional one, and the amount of information is not reduced.
3 does not need to increase the burden.

[0020]

As described above, according to the present invention, even when the display unit can be read only instantaneously instead of continuously, for example, the size of the characters on the first and second lines of the text can be changed. Can be easily discriminated from the difference, it can be prevented from being read by mistake in the middle,
The visibility is improved.

Further, for example, as a method in which the size of the characters in the first line and the second line of the text is different, the size of the characters in one line is an integral multiple of the size of the characters in the other line. By setting so that the number of characters to be displayed is the same as before, the amount of information does not decrease, and the load on the ROM storing the character fonts does not need to be increased. There is an advantage.

[Brief description of the drawings]

FIG. 1 is a diagram showing a frame configuration of a digital signal of an FM broadcast signal.

FIG. 2 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 3 is a plan view illustrating a display example on the display unit of the embodiment.

FIG. 4 is a plan view illustrating a display example on a display unit of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Antenna 2 Receiving circuit 3 Detection circuit 4 Decoding circuit 5 Microcomputer 6 Error correction circuit 7 Operation part 8 Display part 81 Display area 81a Header text area 81b Text area 81b1 First line part 81b3 Second line part

Claims (3)

[Claims] 1. An FM multiplex receiver for receiving an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves and displaying the text information in a plurality of rows on a display unit.
The display unit has a header sentence area for displaying the title of the character information, and a body area for displaying the contents of the character information. The body area displays the character information in two lines. Characters on one line of the body area are double-width characters of characters on the other line, and characters of the header sentence area are quarter-width characters on the other line. FM multiplex receiver. 2. An FM multiplex receiver for receiving an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves and displaying the text information on a plurality of rows on a display unit.
The FM multiplex receiver according to claim 1, wherein the display unit displays the contents of the character information with different character sizes for each line. 3. An FM multiplex receiver for receiving an FM multiplex broadcast in which a text information signal is multiplexed and transmitted using a gap between FM broadcast waves and displaying the text information in a plurality of lines on a display unit.
The FM multiplex receiver according to claim 1, wherein the display unit displays the content of the character information by changing the size of a character in a specific line from that of another line.