KR100263601B1 - Information transfer system and a transmitter, a receiver and a record carrier for use in the system - Google Patents

Abstract

The present invention relates to a transmitter (1) for transmitting an information signal to a receiver (3) via a transmission medium (2) and an information delivery system having a receiver (3). The information signal includes main data and sub data. The subdata has a coded text line having a plurality of character codes. The receiver is provided with a character display device 10 for displaying a character that matches a character code in an encoded text line. The number of character display positions is less than the number of character codes in the encoded text line. The receiver is provided with display control means 9 for controlling the display of the character corresponding to the character code included in the encoded text line according to the serial control code included in the encoded text line. The system allows a significant portion of the text information available for the subdata to appear on both the full multi-line display for displaying all text lines and the one-line display with a relatively small number of digits. The present invention is well suited for systems of small sized receivers, such as portable players and car radios, and receivers with a display on a remote controller, since there is not much space available for the display device.

Description

Information delivery system and transmitters, receivers and record carriers used in the system

1 shows an embodiment of a system according to the invention.

2 shows a format of a packet suitable for transmitting an encoded text line.

3 is a diagram showing an example of a parallel control code included in a packet.

4 illustrates a serial control code that may be included in an encoded text line.

5 shows how packets are incorporated into sub data of a digital compact cassette.

6 shows an embodiment of a sub data processing apparatus for use in the system according to the present invention.

7 shows a display control device for use in a system according to the invention.

8A, 8B, 8C, and 8D show character strings and other encoded text that are displayed as these encoded text lines are received.

9 shows possible relationships between molecular codes and corresponding letters.

* Explanation of symbols for main parts of the drawings

1: transmitter 2: transmission medium

3: receiver 4: main data source

5: subdata source 6: output stage

6a: input stage 7: main data processing apparatus

8: sub data processing device 9: display control circuit

10: 1-line display

The present invention relates to an information transfer system having a receiver and a transmitter for transmitting an information signal to the receiver via a transmission medium, wherein the information signal is encoded text having main data and a plurality of codes. The receiver is provided with a character display device which comprises a sub-data having a line, which displays a character defined by a character code in an encoded text line and has a predetermined number of character display positions.

The invention relates in particular to transmitters, receivers and record carriers for use in such systems.

The system described at the outset is known from EP-A-O, 325,325. In this patent application, a system is described in which an information signal is transmitted to an audio player via a record carrier such as a compact disc or digital audiotape. The player is provided with at least one multi-line display device for displaying the text line defined by the encoded text line included in the transmitted sub data. The number of digit positions (digits) of the display device is sufficient to display the entire text line of 40 characters. With this system, additional information related to the reproduced main (audio) information can be displayed.

Full line display units are inadequate when small receivers, such as portable players and car radios, are used in such systems, as these systems typically do not have enough space for such full line display units. . In addition, all-line displays are also unsuitable for use in remote control devices in receivers. On the contrary, it is preferable that additional information relating to the reproduced main information signal can be displayed on the receiver and the remote control apparatus of the above type.

It is an object of the present invention to provide a means by which an important part of the text information available in the sub data can be displayed on the display of the small receiver and the remote control device without major correction in the sub data format.

According to the present invention, the object is that the predetermined number of character positions of the display device is smaller than the number of character codes of the encoded text line, the encoded text line includes a control code, and the receiver has an encoded text line in accordance with the control code. A display control means is provided for controlling the display of a character corresponding to a character code included in the above.

In the system according to the present invention, the information already available for the encoded text lines included in the sub-data for display on all-line display devices can also be used for displaying on small display devices having a limited number of character positions. have. This has the advantage that it is not necessary to add encoded text as sub-data for exclusive use in conjunction with a 1-line display with a limited number of digits.

In one embodiment of the system, the receiver is provided with means for storing the received encoded text lines in a memory, the control code comprises a horizontal scrolling control code, and the display control means of the receiver is stored in the memory according to the horizontal control code. And horizontal scrolling of the encoded coded text line character is started.

By using a combination of memory and scrolling, the complete coded text line content can be represented.

Another embodiment of the present system is characterized in that an entry means for manually inputting a scroll command to the receiver is provided, and the display control means is adapted to control scrolling according to the input scroll command.

This embodiment has the advantage that the user himself can start scrolling the encoded text lines stored in the memory whenever necessary.

Another embodiment of the system is characterized in that the display control means is arranged to scroll the characters at a speed according to the scrolling control code or the input scrolling command.

This embodiment enables the adoption of the scrolling speed according to the presentation state.

Another embodiment of the present system comprises a marking code for the control code to indicate a character group, wherein the display control means selects a character code corresponding to the relevant character to be displayed based on the marking code. Character code selection means is provided.

This embodiment enables the presentation of the most important words of the message on the display device.

The group of characters to be displayed (string) is located between the start code and the pause code.

In this case, the display control means is adapted to display a space-type character in response to the stop code, and the display of the corresponding character does not occur for the start code. .

This embodiment allows the most appropriate separation between non-contiguous character strings of the message defined by the encoded text line to occur on the display device.

Another embodiment system comprises a text packet in which sub information each comprises an encoded text line and an additional control code, a portion of which is displayed on a display device whose associated packet has a restricted display position. And an indication control code indicating whether there is an encoded text line with text information to be generated, the receiver comprising means for preselecting a text packet having an indication control code and a previously selected text packet. Means for exclusively supplying to the display control means are provided.

By performing the pre-selection, the display control means can be prevented from unnecessarily irradiating the coding control line which does not contain the character to be displayed on the one-line display device.

1 illustrates one embodiment of an information delivery system according to the present invention. The system has a transmitter 1 for transmitting an information signal to a receiver 3 via a transmission medium 2. The transmitter 1 has a common main data source 4, such as digital audio information. The transmitter 1 also has a sub data circle 5 related to the main information. The subdata has an encoded text line and an additional control code. The main data and sub data are supplied to an output stage 6 which transmits the main and sub data to the control medium in a suitable signal format. The receiver 3 has an input stage 6a for receiving the information signal transmitted through the transmission medium 2. The input stage 6a separates main data and sub information. The main data is supplied to the main data processing apparatus 7 of the normal type which processes the main data. The sub data is supplied to the sub data processing device 8 that processes the sub data. The sub data processing apparatus supplies an encoded text line and a corresponding control code to the display control circuit 9 of the 1-line display apparatus 10 having a limited number of character positions (digits), such as a 12-digit display apparatus. The display control circuit 9 controls the display of the character defined by the character code also included in the encoded text line in accordance with the control code included in the encoded text line.

The information delivery system may be in the form of sub data arranged in a packet. Such packets may include encoded text lines. A packet containing an encoded text line will later be represented as a text packet. Each coded text line consists of a series of predetermined number of codes. According to the present invention, an encoded text line is a character code defining a character to be displayed, and a control code for controlling the display of a character string on a one-line device having an insufficient number of digits to display a complete text line at a time. It is provided. The control code included in the encoded text line will then be represented as a serial control code. The packet also has additional code not included in the encoded text line. This control code will later be referred to as a parallel control code. Suitable formats of packets are described in detail in EP-A-0,325,325 and EP-A-0,389,689, which are described herein by reference. The transmission medium may be a compact disc in which digital main (audio) data is recorded, and a packet having an encoded text line is included in a so-called R-W subcode channel. The transmission medium may also be formed by a so-called digital compact cassette in which the main data and the sub data in the form of compressed audio information are recorded on magnetic tape. Packets containing encoded text lines may be included in sub-data recorded on a digital compact cassette. A more detailed description of digital compact cassette systems can be found in EP-A 0,436,991 (PHN 13209), which is hereby incorporated by reference. 5 shows how a packet can be coupled to the secondary data format of the digital compact cassette system described in EP-A 0,436,991 (PHN 13209).

The transmission medium 3 may also be formed of a digital audio broadcast channel which allows a packet comprising a digital audio signal and an encoded text line to be transmitted. A more detailed description of such a broadcast system can be found in EP-A-0,389,689.

2 shows a suitable format of a text packet. The illustrated text packet comprises 48 bytes of 8 bits each. The first 8 bytes are used for the transmission of parallel control codes. The parallel control code has position code 21PC and 2PC. The position code 21PC indicates the line position at which the corresponding text line is to be displayed on the 21 line display device. The position code 2PC indicates the line position of the text line corresponding to the case where the two line display device is used. The parallel control code has three control codes that are used to select a specific text packet from the received text packet. These control codes are represented by LN (language number), AC (application code) and TC (topic code). The code LN indicates the language of the encoded text in the corresponding text packet. The code AP indicates whether the coded text line has information to be displayed on the one-line display device 10. The code TC indicates the topic with which the corresponding text line is associated. Such a topic may be, for example, "album information", "executor name" or "text of a played song".

In the text packet, 40 bytes (bytes 8-47) are used to transmit the codes TLCO, ..., TLC 40 of the encoded text line. The code may have a character code that defines a character of the character set. The code may also have a serial control code for controlling the display device. 9 shows the relationship between code values (hexadecimal) and the corresponding characters. The 0x, 1x, 8x and 9x serial codes are specified as control codes. 4 schematically shows a series of control codes used in the described embodiment. 4 shows two marking codes for marking a group of character codes used to represent a text string. These marking codes are a start control code S used to indicate the start of a text string to be displayed on the 1-line display and a control code P used to indicate the end of the text string to be displayed on the 1-line display 10. Equipped with. Scrolling control codes H0, H1, H2 and H3 with code values 19, 1A, 1B and 1C are used to start horizontal scrolling with four different scrolling speeds.

6 shows an embodiment of the sub data processing apparatus 8. The apparatus 8 has a memory in the form of a shift register 60 in which the bytes of the packet received from the input stage 6a are synchronously shifted to the clock signal C11 received from the timing control device 61 of the conventional type. have. The apparatus 8 is also equipped with code match detection circuits 62, 63 and 64. The code match detection circuits 62 and 64 have an input 66 for receiving a user selection value for the language selection code LN and the topic selection code TC from a conventional type user selection entry device 68 such as an operation panel with a selection key. And 67). The code match detection circuit 63 has an input 72 for receiving a code value corresponding to the code value of the AP indicating whether the corresponding coded text line has information to be displayed on the 1-line display 10. Inputs 69, 70, and 71 of the code match detection circuits 62, 63, and 64 are connected to a parallel output of the shift register 60 such that the first byte of the received text packet is connected to the serial output 65 of the shift register. On arrival, the values of codes LN, AC, and TC are supplied to the code match detection circuits 62, 63, and 64, respectively. The code match detection circuits 62, 63, and 64 have an output 73 for supplying a corresponding detection signal to the gate circuit 76 when a match between code values is detected at the inputs of the circuits 62, 63, and 64. , 74 and 75). The gate circuit 76 detects a match by all three code match detection circuits 62, 63, and 64, and then during the time that the code of the encoded text line is available to the output 65 of the shift register 60. In this case, the load signal VL is generated under the control of the timing circuit 61. The load signal VL is supplied to the inputs of the two input AND gates 96. The clock signal C11 is supplied to the other input of the AND-gate 96 only to obtain the clock signal C12 on the output of the AND gate 96 while the load signal VL occurs. Both the clock signal C12 and the load signal VL are supplied to the display control circuit 9.

The sub data processing device 8 operates as follows: When the parallel control codes LN and TC match the user selection value, at the same time, the encoded text line of the text packet to which the parallel control code AC corresponds is a one-line display device. In the case of indicating whether there is information to be displayed on (10), as soon as the first code of the encoded text line arrives at the output 64 of the shift register 60, the gate circuit 76 starts to generate the load signal VL. As soon as the first parallel control of the next text packet arrives at output 65, the generation of the load signal VL is stopped.

7 shows an embodiment of the display control device 9 and the display device 10. The display control device 9 has a shift register having the next number of byte storage positions equal to the number of codes of the encoded text line. Shift register 80 is placed on input 81 through a register in synchronization with clock signal C11 received from timing circuit via OR gate 95 or clock signal clcr received from clock generator 94 having a controllable oscillation frequency. Shifts the received code to the output 86. Input 81 is connected to two input multiple circuits 82. The first input 83 is connected to the output 65 of the shift register 60 of the sub data processing device 8 via the signal path 84. The second input 85 of the multiple circuit 82 is connected to the output 86 of the shift register 80. The output 97 of the multiple circuits 82 is connected to the input 81 of the shift register 80. The multiple circuit 82 is controlled by the load signal VL supplied to the control input of the multiple circuit 82 via the signal line 87. If the signal VL indicates that it may be useful in the signal path 84 of the next encoded line, the code of this encoded text line is supplied to the input 81 of the shift register 80 via multiple circuits 82. It is done. At the same time, the shift register 80 receives the clock signal c12, causing the code of the encoded text line, which may be useful at the output 65, to be shifted to the shift register 80 in synchronization with the clock signal c12. When the load signal VL indicates that the code of the encoded text line with the information to be displayed on the 1-line display device 10 cannot be useful, the code on the output 86 of the shift register 80 is the multiple circuit 82. Is fed to input 81 via.

Furthermore, the display control device 9 is provided with a code detection circuit 87 having an input connected to the output 97 of the multiple circuits. The code detection circuit 87 is a conventional form for detecting whether a code on the output 97 of the multiple circuit 82 matches a character code or serial control code that defines a space. The detection circuit 87 generates a corresponding output signal when one of the aforementioned codes is detected. Moreover, the control signal generated by the detection circuit is used to determine which type of control code is detected when the detected control code matches the start code S, the pause code P, or the scroll control code H0, H1, H2 or H3. Indicates. This output signal is supplied to the gate circuit 89 via the signal line 88. Furthermore, the load signal VL is also supplied to the gate circuit 89. The other input of the gate circuit 89 is connected to the output of the user select entry device 68 to receive a user input scroll command. The gate circuit 89 derives a control signal for the display device 10 from the signal received at its input. The generation of the first control signal LD starts after detection of the first character code and not the spatial code after the start of the load signal generation. The generation of the control signal LD also starts upon detection of the start control code S. FIG. The generation of the control signal LD is stopped in accordance with the detection of the stop control code P. FIG. Further, the control signal LD is generated during each detection of the pause control code P so that a "space" character appears for each pause code. The control signal LD indicates whether the character is to be displayed on the next blank character position of the 12-digit display element 91 of the display device 10. The second control signal SC detects one of the scroll control codes H0, H1, H2 or H3, or is generated according to a user input scroll command. The control signal SC indicates whether the display element 91 is required for horizontal scrolling of the character corresponding to the subsequent code output by the shift register 80. The third control signal RS generated in accordance with the load signal VL indicates whether the display element 91 is empty. The control signal RS is also generated in accordance with the first detection of the start control code S of the encoded text line. Moreover, the generation of the control signal SC is stopped in accordance with the load signal VL, and the generation of the control signal LD is started in accordance with the load signal. The fourth control signal represents a predetermined scrolling speed.

The output 97 of the multiple circuits 82 is connected to the input of the decoder device 92. The decoder device 92 is provided with a shift register for storing a character code of a character to be displayed. Furthermore, the decoder device is provided with a decoder for converting the character code stored in the shift register into a control signal for each digit of the display element 91. The decoder is a conventional form of generating an indication of space for a serial control code that does not define a character, such as a stop code P. In order to achieve horizontal scrolling of characters on the display element 91, the shift register of the decoder device 92 is a conventional form of causing a shift of the received character code via a shift register in accordance with the signal SC. The shift of the code through the shift register 80 and the shift register of the decoder device are controlled by the clock circuit 94. In the absence of the signal SS, the output of the clock signal of the clock circuit becomes useless. When the signal SS is present, the output of the clock signal is made effective, and the clock signal having the frequency defined by the signal value of the signal SS is supplied directly to the clock input of the shift register of the decoder device 92, and the OR gate It is supplied to the shift register 80 via 95. In the absence of the signal SC, the shift register of the decoder device is in a static mode in which characters can be loaded into a memory location addressed by the address generating circuit 93. The address generating circuit is a normal form of indicating the next empty memory location in the shift register of the decoder device 92. In the case where all available memory locations are used as the storage of the code, the loading of the newly supplied code is no longer stored.

The operation of the display control device 9 and the display device 10 will be described later. When the load signal VL indicates that the code of the next encoded text line at the output 65 is useful, the multiple circuit 82 is in a state where the code on the output 65 is supplied to the input of the shift register 80. As a result, all codes of the encoded text line are shifted to the shift register 80. This code is also supplied to the detection circuit 87 and decoder device 92 inputs.

The detection circuit 87 supplies a signal to the gate circuit 89 indicating the form of the code supplied to the decoder circuit 92 input of the display device 10. As the gate circuit starts to generate the load control signal LD in response to the detection of the first character code rather than the space character, the decoder circuit 92 begins to load characters into the shift register from the first memory position forward, irrespective of the loading), the control code and the space code start to lead, not one of the control codes shown in FIG. To illustrate this loading process, reference is made to FIG. 8A. This figure shows a coded text line of 40 codes and is represented by the characters defined by the code. Space codes are represented by the symbol "-". The result of receiving this encoded text line in the 12 digit display element 91 is shown in window 100. Display element 91 represents the display of the character code on position 2-13 in the encoded text line. The space on the first position of the encoded text line is ignored.

8B shows another coded text line. This coded text line has a stop control code S on position 18 of the coded text line. When this coded text line is supplied to the display control device 9, first, the characters specified by the codes on the positions 3 to 14 are displayed. However, as soon as the start control code S is detected, the display is reset, and the character defined by the code in positions 19-30 is displayed in the window 100.

8C shows an encoded text line in which the start control code S at position 7 precedes the stop control code P on position 13 of the encoded text line. Moreover, the coded text line includes another start control code S at position 19. This will cause the string specified by the character code between the first start control code S and the stop control code P to be displayed. Moreover, the stop control code P causes an indication of space after this string.

As soon as the start control code S is detected on position 19, the loading of the character code in decoder circuit 92 continues until all 12 available memory locations of the decoder circuit are occupied.

8d shows an encoded text line including scroll control code H0 in the first position. As the scroll control code H0 is detected, the display device enters the horizontal scrolling mode. Moreover, after the received encoded text line is completely loaded into the shift register 80, the multiple circuit 82 is in a state where the output 86 of the shift register 80 is supplied to the output 97. The clock generator 94 is set to a frequency corresponding to the value specified by the control code H0. As a result, horizontal scrolling of the character string defined by the encoded text line is realized. The contents of the 12-digit display element with the following clock moments t1, ..., t14 are also shown in Figure 8d. After the scrolling of the complete string defined by the encoded text line is finished, the next horizontal scrolling sequence can be started again. This repeated scrolling sequence may continue until the next coded text line is received without the scrolling control code.

The horizontal scrolling sequence for representing the text defined by any one of the received encoded text lines may also be initiated by a scroll command of the user input, which includes information to be displayed on the 1-line display device 10. This is because each coded text line is completely stored in the shift register 80. The control signal SC is generated according to the scroll command of the user input. As a result, the code of the coded text line available to the shift register 80 is shifted to the decoder device 92 to achieve horizontal scrolling of the text corresponding to the twelve digit display element 91.

Other scrolling methods described above may be performed.

After that, without limitation, a suitable scrolling method will be described.

The decoder device may skip the leading and / or trailing space and continue scrolling until the last character is moved out of the display area.

Soft scroll (character-to-string mode), character scroll (by character) or word scroll (by word) mode may be used.

Two methods can be implemented to activate scrolling automatically or with a user command. Automatic scrolling is disabled if "non-scrolling" code is included in the text line. Scrolling can be controlled automatically. This means that the entire text scrolls without any user interaction. Depending on the design of the hardware, various scrolling methods can be performed as follows.

Text scrolls repeatedly

The text scrolls once until the last character is moved out of the display area.

This method is used exclusively for text lines where the packed index is "00 00h".

The text scrolls once, after which the beginning of the text reappears on the display.

The text is scrolled once, and the text marked by the start control code S and the stop control code P control then appears on the display.

After the text as marked by the control codes S and P first appears during the period (according to the device), the above mentioned scrolling method starts.

Scrolling can also be controlled manually. This means that the text marked by S and P will appear until the user's scroll command is received. Depending on the design of the hardware, various reactions of the user's scroll command can be executed as follows.

The text scrolls once, after which the end of the text remains on the display. This method is used for text lines where the packet index is "00 00h".

The text scrolls once, after which the beginning of the text reappears on the display.

The text is scrolled once, after which the text marked by the control codes S and P appears on the display.

Embodiments of the receiver as described above can be realized as a so-called hard-wired circuit. However, it will be appreciated by those skilled in the art that embodiments realized by so-called program control circuits are also possible. Moreover, it is clear that the present invention is not limited to the use of serial control codes as described. Other serial control codes for controlling the display of character strings on a one-line display with a limited number of digits are also possible.

Moreover, the response of the display device controller may be different for the serial control codes.

The display device can be coupled to the remote controller of the receiver 1.

Claims (28)

A unit including a receiver having a predetermined number of character display positions and having a character display device for displaying a character defined by a character code of an encoded text line, and an encoded text line having main data and a plurality of character codes. An information transmission system comprising a transmitter for transmitting an information signal containing data to a receiver via a transmission medium, wherein the predetermined number of character positions of the display device is smaller than the number of character codes of the encoded text line, and encoded. The text line includes a control code, and the receiver is provided with display control means for controlling display of a character corresponding to a character code included in an encoded text line according to the control code. 2. The apparatus of claim 1, wherein the receiver comprises means for storing the received encoded text lines in a memory, the control code comprising a horizontal scrolling control code, the display control means of the receiver Is configured to start horizontal scrolling on a character of an encoded text line stored in a memory in response to the horizontal control code. 3. The information delivery system according to claim 2, wherein the receiver is provided with entry means for manually inputting a scroll command, and the display control means is adapted to control scrolling according to the input scroll command. 4. The information delivery system according to claim 3, wherein said display control means is arranged to scroll characters at a speed according to a scrolling control code or an input scrolling command. The display apparatus of claim 1, wherein the control code includes a marking code for displaying a group of characters, and the display control means includes means for selecting a character code for displaying a corresponding character based on the marking code. Information delivery system characterized in that. 6. An information delivery system according to claim 5, wherein the marking code comprises a start code preceding the marked character group and a stop code following the marked character group. 7. The information delivery system according to claim 6, wherein the display control means displays a space type character in response to the stop code, and no corresponding character is displayed for the start code. 6. A method according to any of claims 1, 2 or 5, wherein the sub information comprises a text packet, each containing an encoded text line and an additional control code, wherein a portion of the text packet corresponds. And an indicating control code indicating whether a packet having an encoded text line having text information to be displayed on a display device having a limited display position, wherein the receiver precedes a text packet having an indication control code. Means for selecting and means for exclusively supplying the previously selected text packet to the display control means. A transmitter for use in the information transmission system of claim 1, the transmitter comprising: means for transmitting to a transmission medium an information signal having data and sub-data comprising encoded text lines having a plurality of character codes. The coded text line includes a control code for controlling the display of a character representing a coded text line on a display device in which the number of character positions is less than the number of characters in the coded text line. Transmitter. 10. The transmitter of claim 9, wherein the control code comprises a horizontal scrolling control code to control horizontal scrolling of a character representing an encoded text line. 11. The transmitter of claim 10, wherein said control code comprises a code for controlling a scrolling speed. 10. The transmitter as claimed in claim 9, wherein said control code comprises a marking code for marking a group of characters to be displayed on a display device having a limited number of display positions. 13. The transmitter of claim 12, wherein the marking code includes a start code preceding a group of marked characters and a stop code following a group of marked characters. 3. A method according to any one of claims 9, 10 or 2, wherein the sub information comprises text packets each containing an encoded text line and an additional control code, wherein a portion of the text packet is limited to a corresponding packet. And an indicator control code indicating whether a coded text line containing text information to be displayed on a display device having a number of display positions is included. A receiver for use in the information transfer system of claim 1, comprising: means for receiving from a transmission medium an information signal comprising main data and sub-data comprising encoded text lines having a plurality of character codes, and characters in the encoded text lines. In the receiver comprising a character display device for displaying a character corresponding to a code, the display device has a character position whose number is smaller than the number of character codes in the protected text line, and the receiver has an encoded text line. And a display control means for controlling the display of the corresponding character in accordance with the control code included therein. 16. The apparatus of claim 15, wherein the receiver is provided with means for storing the received encoded text lines in a memory, the control code comprising a horizontal scrolling control code, wherein the display control means of the receiver is stored in the memory according to the horizontal control code. And a horizontal scroll of characters of the stored coded text line is started. 17. The system of claim 16, wherein the receiver is provided with entry means for manually inputting a scroll command, and the display control means is adapted to control scrolling according to the input scroll command. receiving set. 18. The receiver of claim 17, wherein the display control means causes scrolling of characters at a speed according to a scrolling control code or an input scrolling command. 16. The receiver according to claim 15, wherein the display control means is provided with means for exclusively displaying a group of marked characters by marking a code included in an encoded text line. 20. The system according to claim 19, wherein said display control means displays a group of characters between the start code preceding the group of marked characters and the stop code following the group of marked characters. receiving set. 21. The receiver according to claim 20, wherein said display control means displays space type characters in response to said stop code, and corresponding characters are not displayed for the start code. 20. A display device according to any one of claims 15, 16 or 19, receiving sub information comprising a text packet including an additional control code and an encoded text line, and having a limited number of character positions on the display device. Means for previously selecting a text packet having an indication control code indicating whether or not a corresponding one is to be displayed and means for exclusively supplying the previously selected text packet to the display control means. Receiver used for. The record carrier used for the information delivery system of claim 1, wherein an information signal having sub data including main data and encoded text lines having a plurality of character codes is recorded. And a control code for controlling the display of a character representing an encoded text line on a display device in which the number of character positions is less than the number of characters in the encoded text line. 24. The record carrier of claim 23, wherein the control code comprises a horizontal scrolling control code for controlling horizontal scrolling of a character representing an encoded text line. 25. The record carrier of claim 24, wherein the control code comprises a code for controlling a scrolling speed. 24. The record carrier of claim 23, wherein the control code comprises a marking code for marking a group of characters to be displayed on a display device having a limited number of display positions. 27. The record carrier of claim 26, wherein the marking code includes a start code preceding the group of marked characters and a stop code following the group of marked characters. 27. The method of any one of claims 23, 24 or 26, wherein the negation comprises a text packet having an encoded text line and an additional control code, wherein a portion of the text packet has a limited number of corresponding packets. And an indicator control code indicating whether or not a coded text line having text information to be displayed on a display device having a display position is provided.