JPH08331073A - Receiver - Google Patents

Abstract

PURPOSE: To retrieve a page desired by the user quickly by feeding a page or a line by one page or by a prescribed line number automatically continuously in the case of receiving an FM teletext broadcast. CONSTITUTION: A CPU 21 reads a character code received and stored in a RAM 24 and data converted into display data by a ROM 31 and written in a memory 32 are read by a display controller 33 and displayed on a display screen of an LCD 50. When a page feed key 62A or 62B of a remote command transmitter 60 is depressed in this state, the CPU 21 starts a 2sec timer and a 0.7sec timer and feeds the page by one page in forward or reverse direction depending on the depressed page feed key by discriminating a form of the page. When the timer expires the time 0.7sec and the depression of the key is discriminated, the CPU 21 displays automatically a succeeding page and feeds the page by one page each automatically for each 0.7sec in the forward or reverse direction. Thus, the user seeks quickly a desired page by keeping the depression of the page feed key.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver for receiving character multiplex broadcasting such as FM character multiplex broadcasting.

[0002]

2. Description of the Related Art In FM broadcasting, multiplexing and transmission of character information and the like as digital data together with an original audio broadcasting program has been realized as FM character multiplex broadcasting, and when the broadcasting is received, FM receivers capable of displaying character information on a display element such as a liquid crystal display element have been commercially available.

This FM character multiplex broadcasting is based on the DARC system that enables mobile reception. The standard for multiplexing digital data such as character information is that the subcarrier frequency is 76 kHz, the transmission rate is 16 kilobits / second, and the modulation method is The LMSK and error correction method is a product code based on the (272,190) shortened difference set cyclic code.

Program services such as character information are classified into Levels 1, 2, and 3. All of them present (display) character information by dot display, but Level 1 is a service for receivers that can display 15.5 characters × 2.5 lines including the header part. , The information is in letters. Level 2 includes the header part, 15.5 characters x 8.5
It is a service for receivers that can display lines, and information is characters and graphics. Level 3 is a traffic information service for a receiver that can display a detailed map on a CD-ROM or the like, that is, a navigation system.

As the level 1 program service, news, weather forecast, traffic information, entertainment and main complementary programs are considered. Entertainment provides fortune-telling, listener message boards, quizzes, town information, etc.The main complementary programs are, for example, when the original audio broadcast program is a music program, its song title, performer name, and request time. It provides the program complement information such as the telephone number and the fax number. The main complementary programs are
It is also called program information or program interlocking.

[0006] In addition to the above, "urgent information" which is provided as needed when there is an urgent need is considered as a program service other than the above.

FIG. 6 shows the frame structure of the LMSK signal multiplexed in the above FM character multiplex broadcasting. LM
One frame of the SK signal is composed of 272 blocks,
Each block has 288 bits.

The 272 blocks constituting one frame are divided into 190 data packet blocks and 82 vertical parity packet blocks, and the vertical parity packet blocks are distributed. Sent out.

A 16-bit BI is placed at the beginning of each block.
C (block identification code) is added. However, BIC
, Four types are used, and each parity packet is distinguished by this, and the head of the frame is identified.

A block of data packets comprises a BIC followed by a 176-bit data packet, followed by a 14-bit CRC code, followed by 82 bits.
It is assumed to have a horizontal parity check code of bits. The CRC code is added to detect a residual error after error correction by the product code. A block of vertical parity packets is assumed to have a vertical parity packet of 272 bits following the BIC.

Each data packet, as shown in FIG.
It consists of a 32-bit prefix and a 144-bit data block following it.

As shown in FIG. 8, the prefix is composed of a service identification code, a decoding identification flag, an information end flag, an update flag, a program number, a page number, a data link code, and a data packet number.

The service identification code is 4 bits and identifies the content of the program. For Level 1,
"1" is general information for sequential reception processing, "2" is general information for recording reception processing, and "4" is traffic information.

The sequential reception process is a mode in which the decoding process of the presentation is started as soon as the first data packet of the program data or page data arrives at the receiver, and the recording and reception process is the program data or page data. In this mode, all the data is received and recorded, the error correction process is performed by the CRC code for each data group, and then the presented decoding process is started.

When a program is required to be presented on the receiving side at the transmitting side, or a program which cannot be presented if the decoding process is started after the final packet of the data group is obtained, the sequential receiving process is performed. It is said that

The decoding identification flag is 1 bit and is set to "1" when the error correction circuit of the receiver outputs data by decoding only in the horizontal direction, and outputs the data after composite in the horizontal and vertical directions. In this case, it is set to "0".

In the successive reception process, the decoding identification flag is "0".
In this case, the receiver performs the decoding process for presentation of each data packet at the time of the first BIC of the data packet 302 packets after the reception of the first BIC of each data packet. Is prescribed as follows.

The information end flag is 1 bit and is set to "1" when the data group to be transmitted with a certain data group number is completed, and is set to "0" otherwise.

The update flag is 2 bits and is incremented by 1 each time the data group is updated.

The program number is 8 bits and the page number is 6 bits, and both form a data group number.

The data link code is 2 bits, and the data that should belong to one data group is a maximum of 4 because the number of packets exceeds the maximum value of the data packet number. It is a code for linking in the order of 0 → 1 → 2 → 3 between data groups when divided into data groups and transmitted by the same data group number with different data link codes.

The data packet number excluding the data link code is 8 bits and is assigned in order from "0".

The program numbers are from 0 to 255, "total contents" are assigned to "0", "254" is assigned to the main complementary programs (program information or program linkage), and "255" is assigned to the emergency information. Is assigned to each.

The page numbers are from 1 to 62, that is, one program has a maximum of 62 pages. One page corresponds to one data group, and one data group
It is composed of one or more data blocks.

In Level 1, one page is generally in the display format of 15.5 characters × 2.5 lines, but it may be in the display format of 15.5 characters × 8.5 lines. . In addition, the character data in this case specifies the character to be displayed by the JIS code.

As described above and as shown in FIG. 9, the receiver corresponding to the level 1 is a display capable of displaying 15.5 characters × 2.5 lines as, for example, an LCD (liquid crystal display element) 1. A screen having a screen 1a is used. However, in the lower left side of the display screen 1a, a portion 1b of 15 characters × 2 lines
Is the text display area, and the upper 0.5 line and the 0.5-character portion 1c on the right side with hatching are the header text display area.

The receiver receives the LMSK signal together with the stereo composite signal, decodes the character data from the LMSK signal, and writes the decoded character data in the buffer memory.

The receiver or the remote control transmitter for remotely controlling the receiver is provided with a "general table of contents" key. By operating this key, the receiver displays the display screen 1a as shown in FIG. 10 (A). , The total table of contents (main menu) is presented. However, in FIG. 10A, the total table of contents is displayed over a plurality of pages or in a display format of 8.5 lines, and the first page of them or the beginning of the body of a page in the display format of 8.5 lines is displayed. The two lines are displayed.

The receiver or remote control transmitter is further provided with a "page (screen) advance" key. By operating this key, as shown in FIG. One page, or the next two lines of the body of the page formatted in 8.5 lines are displayed.

Then, when the user selects and decides the number of the item to be viewed from the total contents, the contents of the selected and decided item are further presented. For example, when the user selects “3. Weather forecast” from the total table of contents, a table of contents such as “1. today's weather 2. tomorrow's weather” is presented as shown in FIG.

Further, when the user selects and determines the number of the item to be viewed from the table of contents, the first page of the selected and determined item is presented. For example, when the user selects "1. Today's weather" from the above table of contents, specific character information about "Today's weather" is presented as shown in FIG.

[0032]

As described above, in the FM character multiplex broadcasting, the character data of a maximum of 62 pages can be transmitted per program, and the receiver which receives the FM character multiplex broadcasting has the page feed key. By pressing this, a page or line to be displayed on the display screen 1a of the LCD 1 can be sent.

Specifically, as a page feed key, a forward key (next page button) and a reverse key (previous page button) are provided, and when one page has a display format of 2.5 lines, When the forward key is pressed, the next page is displayed, and when the reverse key is pressed, the previous page is displayed.

When one page has a display format of 8.5 lines, when the forward key is pressed, the next two lines in the text of the eight lines are displayed and the reverse key is pressed. When this is done, the previous two lines in the body of the eight lines are displayed. When the forward key is pressed while the last two lines of the text are displayed, the first two lines of the text on the next page are displayed, and when the first two lines of the text are displayed, When the reverse key is pressed, the last two lines in the text of the previous page are displayed.

However, since the maximum number of pages per program is 62 as described above, each time the page feed key is pressed, only one page or two lines can be sent. Otherwise, it takes time to find the page you want to see.

Therefore, the present invention is intended to enable a user to quickly search for a desired page in a receiver for receiving character multiplex broadcasting such as FM text multiplex broadcasting.

[0037]

According to the invention of claim 1, as a receiver, a receiving circuit for receiving the character multiplex broadcast, a memory for storing the character data received by the receiving circuit, and a character based on the character data. A display element for displaying
A page feed key for sending a page or line displayed on the screen of this display element and a control unit are provided, and the control unit is
When the page feed key is pressed, the page or line displayed on the screen of the display element is sent, and when the page feed key is continuously pressed for a predetermined time or longer, it is pressed for the predetermined time. Then, the page or line displayed on the screen of the display element is automatically sent.

According to the second aspect of the present invention, as a receiver, a receiving circuit for receiving the character multiplex broadcast, a memory for storing the character data received by the receiving circuit, and a display element for displaying a character by the character data. , A page feed key for sending a page or line displayed on the screen of this display element, and a control unit, and the control unit displays on the screen of the display element when the page feed key is pressed. When the number of lines of the display format of one page to be performed is equal to the number of lines of the screen of the display element, the page displayed on the screen of the display element is sent and the page feed key is set to the first When the button is continuously pressed for a predetermined time or longer, every time the button is continuously pressed for the first predetermined time, the page displayed on the screen of the display element is automatically sent and displayed on the screen of the display element. When the number of lines in the display format of one page to be provided is larger than the number of lines on the screen of the display element, the line displayed on the screen of the display element is sent, and the page feed key is set to the first page When the button is continuously pressed for a predetermined time or more and within a second predetermined time that is longer than the first predetermined time, the screen of the display element is displayed every time the first predetermined time is kept pressed. When the line to be displayed is automatically fed and the page feed key is continuously pressed for the second predetermined time or more, after the second predetermined time has elapsed, the page forward key is continuously pressed for the first predetermined time. In addition, the line of the next or previous page is automatically displayed on the screen of the display element.

[0039]

In the receiver of the invention of claim 1 configured as described above, when the predetermined time is Ta seconds, when the page forward key is pressed, the time during which the page forward key is pressed is Ta seconds or less. If there is, only one page or a predetermined line displayed on the display screen is sent, or if the pressed time is Ta seconds or more, each time Ta seconds are pressed, The page or line displayed on the display screen is automatically sent page by page or every predetermined line.

In the receiver of the invention of claim 2 configured as described above, if the first predetermined time is Ta seconds, and the number of lines in the display format of one page is equal to the number of lines on the display screen. When the page feed key is pressed, if the time that the page feed key is held down is Ta seconds or less, only one page displayed on the display screen is sent. If the duration is Ta seconds or more, the pages displayed on the display screen are automatically sent one by one every time the Ta seconds are continuously pressed.

When the second predetermined time is Tb seconds (Tb> Ta), if the number of lines in the display format of one page is larger than the number of lines on the display screen, the page feed key is pressed. If the pressed time is within Ta seconds, the line displayed on the display screen is sent by a predetermined line, but the pressed time is T
If a seconds or more and Tb seconds or less, every time Ta seconds are pressed, the lines displayed on the display screen are automatically sent by a predetermined number of lines, and the time during which the pressing is continued is Tb seconds or more. Then, after the elapse of Tb seconds, the line of the next or previous page is automatically displayed on the display screen every time the button is continuously pressed for Ta seconds.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of a receiver of the present invention, which is a level 1 compatible vehicle-mounted FM receiving FM character multiplex broadcast.
This is the case for the receiver.

In the FM receiver of this example, the FM signal received by the antenna 11 is supplied to the tuner circuit 12 of the synthesizer system to select the broadcasting station of the target frequency, and the FM signal is intermediate. The signal is converted into a frequency signal, and the intermediate frequency signal is supplied to the FM demodulation circuit 14 through the intermediate frequency amplifier circuit 13.

From the FM demodulation circuit 14, the sum signal (L + R) of the stereo left and right audio signals L and R, the DSB signal balanced-modulated by the difference signal (LR), the pilot signal, and the FM character The above LM in multiplex broadcasting
The frequency multiplexed signal with the SK signal is extracted.

This frequency-multiplexed signal is supplied to the stereo demodulation circuit 15, the left and right channel audio signals L and R are demodulated from the sum signal (L + R) and the DSB signal, and these audio signals L and R are amplified by the amplifier circuits 16L and 16. It is supplied to the left and right channel speakers 17L and 17R through 16R.

Further, the FM receiver is provided with a microcomputer 20 for performing channel selection in the tuner circuit 12 and character display by FM character multiplex broadcasting.

The microcomputer 20 has a CPU 21 for executing a program, a ROM 22, a work area RAM 23, and a RAM 24 for a reception buffer of FM character multiplex broadcasting data. In this case, RO
Various routines are written in M22, and
As a part of the routine, a page feed routine 100 shown in FIG. 2 and described later is provided.

The ROM 22 and the RAMs 23 and 24 are connected to the CPU 21 through the system bus 29, and the system bus 29 has interface circuits (ports) 25 to 25.
28 is connected.

Then, the interface circuit 25 supplies the tuner circuit 12 with data for channel selection, and the channel selection is executed. Further, the demodulation signal from the FM demodulation circuit 14 is supplied to the decoder circuit 41, and the LMSK signal is converted into the F signal.
The data in the M character multiplex broadcast is decoded and taken out, and this data is transferred to the R through the interface circuit 26.
Written to AM24. The data in the RAM 24 is constantly updated with the latest data.

The interface circuit 27 is also connected with various operation keys 42 composed of non-lock type push switches, and the key output thereof is taken into the microcomputer 20. Thus, when any one of the operation keys 42 is pressed, the pressed key is discriminated by the CPU 21, and the process corresponding to the pressed key is executed.

However, when the FM receiver is mounted on a vehicle,
Since the operation panel is narrow and a large number of operation keys cannot be arranged, in this example, the operation key 42 is
Only keys with high operation frequency and keys with high importance are used, and other operations are performed by a remote controller (remote operation).

Therefore, the interface circuit 27 includes
The receiving circuit 43 of the remote controller is also connected. In this example, the remote control is of infrared type, and the receiving circuit 43 is
The remote control transmitter 60 has a light receiving element for receiving infrared rays and a decoder circuit for decoding a remote control signal from the light receiving element.

Further, the remote control transmitter 60 is also provided with various operation keys 62 (62A to 62N) constituted by non-lock type push switches. Although a part of the operation key 62 has the same function as the operation key 42, when an arbitrary key of the operation keys 62 is pressed, data corresponding to the pressed key is formed and converted into infrared rays. Sent to FM receiver.

In the FM receiver, the infrared ray transmitted from the remote controller transmitter 60 is received by the receiving circuit 43, the original data is taken out, and this data is supplied to the interface circuit 27. Thus, similarly to the case where the operation key 42 is pressed, when the operation key 62 is pressed, the processing corresponding to the pressed key is executed by the microcomputer 20. In the following, the operation of each unit will be described depending on the case where the operation key 62 of the remote control transmitter 60 is used.

A beep sound signal forming circuit 44 is connected to the interface circuit 28, and a beep sound signal from this is supplied to the amplifier circuits 16L and 16R.

Further, the system bus 29 is connected to a font ROM (character generator) 31 having font data for converting a character code sent by FM character multiplex broadcasting into display data, and a display memory. 32 and the display controller 33 are connected, and the display controller 33 is connected to, for example, the LCD 50 as a display element.

The LCD 50 is the LC shown in FIG. 9 and described above.
Similar to D1, it has a display screen that can display 15.5 characters × 2.5 lines, of which the lower left 15 characters × 2 lines is the text display area and the upper 0.5 lines. The 0.5 character portion on the right and the right is used as a header sentence display area.

The display memory 32 is of a bit map type corresponding to the dot display type of the LCD 50.
It is assumed to have the capacity for the screen.

Then, the character code held in the RAM 24 is read by the CPU 21, the read character code is converted into display data by the font data of the ROM 31, and the display data is written in the memory 32. At this time, the display controller 33 repeatedly reads the display data from the memory 32, converts the display data into a display signal, and supplies the display signal to the LCD 50. Therefore, C is displayed on the display screen of the LCD 50.
The characters of the character code read out from the RAM 24 by the PU 21 are displayed.

Among the operation keys 62 of the remote control transmitter 60, the operation key 62A is a forward key (next page button),
The operation key 62B is a reverse feed key (previous page button). The CPU 21 uses these page feed keys 62A, 62
When B is pressed, the page feed routine 1 shown in FIG.
00 to send a page or line displayed on the display screen of the LCD 50.

That is, the program by the character multiplex broadcasting is selected, and the display format of one page is 2.5 lines on the display screen of the LCD 50, or the display format of one page is 8.5 lines. In a state in which a certain 2 lines in the body of 8 lines of a given page are displayed, the CPU 2
First, in step 101, the page feed key 6
It is determined whether 2A or 62B is pressed.

When it is determined that the page feed key 62A or 62B is pressed, the CPU 21 next activates a 2-second timer in step 102, and further activates a 0.7-second timer in step 103.

Further, the CPU 21 proceeds to step 104 and judges whether the display format of one page is 8.5 lines, that is, whether it is 8.5 lines or 2.5 lines, If it is determined that the number of lines is 2.5, then in step 105, the page displayed on the display screen of the LCD 50 is moved forward or backward depending on whether the page forward key 62A or 62B is pressed. Send one page to. That is, the page displayed on the display screen is
The next page or the previous page.

For example, on the display screen of the LCD 50, as shown in FIG.
When the forward key 62A is pressed while page 1 is displayed as shown in the uppermost row of the page, the next page is displayed on the display screen 51 of the LCD 50 as shown in the second row of FIG. Page 2 is displayed immediately.

Further, the CPU 21 proceeds to step 106 and presses the pushed page forward key 62A or 6A.
2B, that is, when it is determined in step 101 that the forward feed key 62A is pressed, the forward feed key 62 is pressed.
When A determines in step 101 that the reverse feed key 62B has been pressed, it determines whether the reverse feed key 62B remains pressed.

In step 106, page feed key 6
When it is determined that 2A or 62B is still being pressed, the CPU 21 next determines in step 107 whether or not the 0.7 second timer activated in step 103 has timed out, and determines that it has not timed out. In some cases, the process returns to step 106, and it is further determined whether or not the page feed key 62A or 62B is still pressed. Determine whether or not.

Then, the page feed key 62A or 62
When it is determined in step 107 that the time of 0.7 seconds has been exceeded due to B being continuously pressed for 0.7 seconds or more, the CPU 21 returns to step 103 and restarts the 0.7 second timer. Let step 1
In step 04, it is judged again that the display format of one page is 2.5 lines, and in step 105, LC
The page displayed on the display screen 51 of D50 is forwarded by one page in the forward direction or the backward direction.

Therefore, as described above, when the forward key 62A is pressed while page 1 is displayed on the display screen 51 of the LCD 50, and when it is continuously pressed for 0.7 seconds or longer, the forward key 62A is pressed. After 0.7 seconds have passed since the button was pressed, the next page, page 3, is automatically displayed on the display screen 51 of the LCD 50, as shown from the second row to the third row in FIG. Will be displayed.

When the page forward key 62A or 62B is continuously pressed for a longer time,
When the CPU 21 returns from step 107 to step 103 every 0.7 seconds, the display screen 5 of the LCD 50 is displayed.
The pages displayed on page 1 are automatically forwarded page by page every 0.7 seconds, either forward or backward as shown in FIG.

Therefore, the user can quickly search for a desired page by continuously pressing the page forward key 62A or 62B.

As shown in FIG. 4, since the display format of one page is 8.5 lines, when it is determined in step 104 that the display format of one page is 8.5 lines, the CPU 21 proceeds to the next step. At 111, it is determined whether or not the 2-second timer started at step 102 has timed out.

When it is determined in step 111 that the time of 2 seconds has not been exceeded, the CPU 21
Next, in step 112, the line currently displayed is
Step forward key 6 in step 101 in the body of 8 lines of a page where the display format of 1 page is 8.5 lines
When it is determined that 2A is pressed, it is determined whether or not it is the last two lines, and when it is determined in step 101 that the reverse feed key 62B is pressed, it is determined whether or not it is the first two lines.

Then, the last two lines or the first two
When it is determined that the line is not a line, the CPU 21 next moves the line displayed on the display screen 51 of the LCD 50 in the forward direction or the reverse direction in step 113, depending on which one of the page feed keys 62A or 62B is pressed. Send two lines in the direction.

For example, on the display screen 51 of the LCD 50,
As shown in the top row of FIG. 5, in the state where the first two lines in the text of page 1 of 8 lines are displayed, the forward key 62A
When is pressed, the next two lines of the same page 1 are immediately displayed on the display screen 51 of the LCD 50, as shown in the second row of FIG.

When it is determined in step 112 that the currently displayed line is the last two lines or the first two lines, the CPU 21 then displays the display screen 51 of the LCD 50 in step 105. The page is forwarded by one page in the forward direction or the reverse direction depending on whether the page feed key 62A or 62B is pressed. That is, the lines displayed on the display screen 51 are the first two lines of the next page or the first two lines of the previous page.

After sending the line displayed on the display screen 51 in step 113 or sending the page displayed on the display screen 51 in step 105, the CPU 2
1 further proceeds to step 106, where the pressed page forward key 62A or 62B is pressed, that is, when it is determined in step 101 that the forward key 62A is pressed, the forward key 62A is pressed, and the reverse key 62B is pressed in step 101. When it is determined that the reverse feed key 62B has been pressed, it is determined whether the reverse feed key 62B is still pressed.

In step 106, the page feed key 6
When it is determined that 2A or 62B is still being pressed, the CPU 21 next determines in step 107 whether or not the 0.7 second timer activated in step 103 has timed out, and determines that it has not timed out. In some cases, the process returns to step 106, and it is further determined whether or not the page feed key 62A or 62B is still pressed. Determine whether or not.

Then, the page feed key 62A or 62
When it is determined in step 107 that the time of 0.7 seconds has been exceeded due to B being continuously pressed for 0.7 seconds or more, the CPU 21 returns to step 103 and restarts the 0.7 second timer. Let step 1
In 04, it is judged again that the display format of one page is 8.5 lines, and then in step 111, it is judged again whether the time of 2 seconds is exceeded.

When it is determined in step 111 that the time of 2 seconds has not been exceeded, the CPU
21 then proceeds to step 112, determines whether the line currently being displayed is the last two lines or the first two lines as described above, and the line currently being displayed is When it is determined that the line is not the last two lines or the first two lines, the line displayed on the display screen 51 is changed to the page feed key 62A in step 113 as described above.
Or two lines forward or backward depending on which button 62B is pressed, and when it is determined that the currently displayed line is the last two lines or the first two lines, in step 105. As described above, the page displayed on the display screen 51 is changed to the page feed key 62A.
Or, one page forwards or backwards depending on which of 62B is pressed.

Therefore, as described above, the forward key 62A is pressed while the first two lines of page 1 are displayed on the display screen 51 of the LCD 50, and it is 0.
If the key is continuously pressed for 7 seconds or more, 0.7 seconds after the forward key 62A is pressed, the second to third steps in FIG. As shown, the next two lines of the same page 1 will be automatically displayed.

The page feed key 62A or 62B is set to 2
If the button is pressed continuously within the range of seconds,
When the CPU 21 returns from step 107 to step 103 every 0.7 seconds, the display screen 5 of the LCD 50 is displayed.
The line displayed above 1 is automatically sent every two seconds in the forward direction as shown in the fourth row of FIG. 5 or in the reverse direction every 0.7 seconds.

Further, the page feed key 62A or 62
When B is continuously pressed for 2 seconds or more, the CPU 21
Determines that the time of 2 seconds has been exceeded in step 111.

Then, in this way, the page feed key 62A
Alternatively, when it is determined in step 111 that the time of 2 seconds is exceeded due to the fact that 62B is continuously pressed for 2 seconds or more, the CPU 21 causes the CPU 21 to execute step 105.
Going to step 1, the page displayed on the display screen 51 of the LCD 50 is forwarded by one page in the forward direction or the reverse direction depending on which of the page forward keys 62A or 62B is pressed. That is, the lines displayed on the display screen 51 are the first two lines of the next page or the first two lines of the previous page.

Therefore, as described above, when the forward feed key 62A is pressed while the first two lines of page 1 are displayed on the display screen 51 of the LCD 50, and when the forward feed key 62A is continuously pressed for 2 seconds or more, the forward feed is performed. Two seconds after the key 62A is pressed, the display screen 51 of the LCD 50 is displayed.
The first two lines of the next page 2 will be automatically displayed above, as shown from the fourth row to the fifth row in FIG.

When the page forward key 62A or 62B is continuously pressed for a longer time,
The CPU 21 returns from step 107 to step 103 every 0.7 seconds, so that after 2 seconds, L
The page displayed on the display screen 51 of the CD 50 is 0.
Every 7 seconds, one page is automatically fed in the forward direction or the reverse direction as shown in the sixth row of FIG.

Therefore, the user can quickly search for a desired page by continuously pressing the page feed key 62A or 62B.

In step 101, page feed key 6
When it is determined that 2A or 62B is not pressed, that is, when it is determined that an operation key other than the page feed keys 62A and 62B is pressed, the CPU 21
Performs other processing corresponding to the operation key in step 121.

In the example of FIG. 2, when the display format of one page is 8.5 lines, the page feed key 62A or 62
When B is continuously pressed for 2 seconds or more, after 2 seconds,
The page displayed on the display screen 51 of the LCD 50 is
This is a case of automatically sending one page in the forward direction or the reverse direction every 0.7 seconds. This allows you to search for the page you want to see earlier, but after 2 seconds, 2 seconds have passed. As in the previous case, the lines displayed on the display screen 51 of the LCD 50 may be automatically sent every two seconds in the forward or reverse direction by two lines.

In the above example, the remote control transmitter 60 is used to perform various operations.
Alternatively, the operation key 42 of the receiver can be used.

[0090]

As described above, according to the present invention, F
In a receiver that receives character multiplex broadcasting such as M character multiplex broadcasting, a user can quickly search for a desired page.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a receiver of the present invention.

FIG. 2 is a diagram showing an example of a page feed routine executed by the control unit.

FIG. 3 is a diagram for explaining the operation when the display format of one page is 2.5 lines.

FIG. 4 is a diagram showing an example of a page having a display format of 8.5 lines.

FIG. 5 is a diagram for explaining the operation when the display format of one page is 8.5 lines.

FIG. 6 is a diagram showing a frame structure of an LMSK signal in FM character multiplex broadcasting.

FIG. 7 is a diagram showing the structure of the data packet.

FIG. 8 is a diagram showing the structure of the prefix.

FIG. 9 is a diagram showing a display element provided in a receiver compatible with level 1 of FM text multiplex broadcasting.

FIG. 10 is a diagram showing a display example of the display screen.

FIG. 11 is a diagram showing a display example of the display screen.

FIG. 12 is a diagram showing a display example of the display screen.

[Explanation of symbols]

 12 tuner circuit 14 FM demodulation circuit 15 stereo demodulation circuit 20 microcomputer 21 CPU 24 RAM (for reception buffer) 31 font ROM (character generator) 32 memory (for display) 33 display controller 41 decoder circuit 42 operation keys 50 LCD 60 remote control transmission Machine 62A Forward feed key (Page feed key) 62B Reverse feed key (Page feed key) 100 Page feed routine

Claims (2)

[Claims] 1. A receiving circuit for receiving a character multiplex broadcast, a memory for storing character data received by the receiving circuit, a display element for displaying characters according to the character data, and a display element for displaying on a screen of the display element. A page feed key for sending a page or line to be displayed, and a control unit, and the control unit sends the page or line displayed on the screen of the display element when the page feed key is pressed, A receiver that automatically sends the page or line displayed on the screen of the display element each time the page feed key is continuously pressed for a predetermined time or longer. 2. A receiving circuit for receiving a character multiplex broadcast, a memory for storing character data received by the receiving circuit, a display element for displaying characters according to the character data, and a display on a screen of the display element. A page feed key for sending a page or line to be displayed, and a control unit, and the control unit displays the display format of one page to be displayed on the screen of the display element when the page feed key is pressed. When the number of lines is equal to the number of lines on the screen of the display element, the page displayed on the screen of the display element is sent, and the page feed key is continuously pressed for the first predetermined time or longer. Sometimes, every time the button is pressed for the first predetermined time, the page displayed on the screen of the display element is automatically sent, and the display format of one page to be displayed on the screen of the display element. Number of rows, if greater than the number of lines on the screen of the display device, and sends the lines displayed on the screen of the display device,
When the page feed key is continuously pressed within the second predetermined time which is longer than the first predetermined time and is longer than the first predetermined time, every time the page forward key is continuously pressed for the first predetermined time. In addition, when a line displayed on the screen of the display element is automatically fed and the page feed key is continuously pressed for the second predetermined time or more, the line is displayed after the second predetermined time. A receiver that automatically displays the line of the next or previous page on the screen of the display element each time the button is pressed for a first predetermined time.