JP2000013760A - Device and method for transmitting information, device and method for receiving information, providing medium and broadcasting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire program information in short time. SOLUTION: A video signal and an audio signal are encoded by MPEG video encoders 11-1, 11-2 and MPEG audio encoders 12-1, 12-2. The program information is generated by an SI/EPG data generator 17. The program information is multiplexed on video data and audio data by a transport stream multiplexer 14. Data output rate and multiplexing ratio of encoding are controlled by a system controller 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmitting apparatus and method, an information receiving apparatus and method, a providing medium, and a broadcasting system, and more particularly, to a method of transmitting program information when the amount of video data and audio data transmitted can be reduced. The present invention relates to an information transmitting apparatus and method, an information receiving apparatus and method, a providing medium, and a broadcasting system capable of increasing a data transmission amount.

[0002]

2. Description of the Related Art In a digital broadcasting system, EPG (Electronic Program Guide) data for providing program information includes:
DVB / SI (Digital Video Broadcasting / Service Informat
ion: EN300468), EIT (Event Information T
), and other service information (SI: S
ervices Information) together with a transport stream.

FIG. 7 shows that the total transmission rate of EPG information is 150 kb.
FIG. 3 is a diagram illustrating a configuration example of an EIT, where ps is used. The EIT includes a network ID, a TS-ID, a service ID, a table ID, a program start time corresponding to the table ID, a program length, and the like. Furthermore, a program name, genre information, and the like can be described in a descriptor along with a program start time and a program length.

[0004] The EIT is roughly composed of EPG data of its own station and EPG data of another station. The EPG data of the own station and the EPG data of other stations further include the data of the current and next programs, the data of the programs within the current 6 hours,
From the data of the program within hours to 24 hours, the data of the program of days 2 to 3, and the data of the program of days 4 to 8,
Each is configured. These EPG data each have a unique Table_id (identification code) and each retransmission cycle. Further, the EPG data is transmitted at a retransmission cycle set for each data in each table, and has a predetermined transmission rate.

[0005] As shown in FIG. 8, transmission of EPG data corresponds to a predetermined EPG with respect to the transmission path bandwidth of the digital broadcasting system.
An occupied band for data (including predetermined service information) is set. Since transmission of video data and audio data is prioritized, the EPG data occupied bandwidth does not change even if an occupied bandwidth for transmitting video data and audio data becomes free.

[0006]

When the data volume of EPG data is large, even if an occupied band for transmitting video data and audio data becomes available, the EPG data is transmitted to the information receiving device at the same transmission speed. Thus, the viewer takes time to acquire the program information.

The present invention has been made in view of such a situation. When the transmission amount of video data and audio data can be reduced, the transmission amount of program information data is increased, and the program information can be reduced in a short time. The purpose is to obtain.

[0008]

According to the first aspect of the present invention, there is provided an information transmitting apparatus, comprising: a video encoding means for encoding a video signal; an audio encoding means for encoding an audio signal; Program information data generating means, and video data output by the video encoding means and audio data output by the audio encoding means,
Multiplexing means for multiplexing the data of the program information output by the program information data generating means, a data output speed of the video encoding means, a data output speed of the audio encoding means,
And a control means for controlling a data output speed of the program information data generating means and a multiplexing ratio of video data, audio data and program information data of the multiplexing means.

According to another aspect of the present invention, there is provided an information transmitting method comprising: a video encoding step of encoding a video signal; an audio encoding step of encoding an audio signal; and a program information data generating step of generating program information data. When,
A multiplexing step of multiplexing the program information data output by the program information data generation step with the video data output by the video encoding step and the audio data output by the audio encoding step, and a data output of the video encoding step. A control step for controlling a speed, a data output speed of the audio encoding step, and a data output speed of the program information data generating step, and a multiplexing ratio of video data, audio data, and program information data in the multiplexing step And characterized in that:

[0010] According to a third aspect of the present invention, there is provided the information transmitting apparatus, wherein a video encoding step of encoding a video signal, an audio encoding step of encoding an audio signal, and a program for generating program information data are provided to the information transmitting apparatus. An information data generating step; a multiplexing step of multiplexing the program information data output by the program information data generating step with the video data output by the video encoding step and the audio data output by the audio encoding step; Speed of data output of the multiplexing step, data output speed of the audio encoding step, and data output speed of the program information data generating step, and multiplexing of video data, audio data, and program information data in the multiplexing step. And a control step of controlling the ratio. Computer and providing a readable program.

According to a fourth aspect of the present invention, there is provided an information receiving apparatus, comprising: separating means for separating program information multiplexed into a video signal and an audio signal; storage means for storing the program information separated by the separating means; A control means for controlling the operation of the separating means and the storing means in accordance with the transmission speed is provided.

According to a fifth aspect of the present invention, in the receiving method, a separating step of separating program information multiplexed into a video signal and an audio signal, a storing step of storing the program information separated by the separating step, and a transmission of the program information And a control step of controlling operations of the separation step and the storage step in accordance with the speed.

According to a sixth aspect of the present invention, there is provided the providing medium, wherein the information receiving apparatus includes a separating step of separating the program information multiplexed into the video signal and the audio signal, and a storing step of storing the program information separated by the separating step. A computer-readable program for executing a process including a control step of controlling operations of a separating step and a storing step in accordance with a transmission speed of program information is provided.

According to a seventh aspect of the present invention, in the broadcast system, the information transmitting apparatus includes a video encoding unit that encodes a video signal, an audio encoding unit that encodes an audio signal, and a program that generates data of program information. Information data generating means, video data output by the video encoding means and audio data output by the audio encoding means,
Multiplexing means for multiplexing the data of the program information output by the program information data generating means, a data output speed of the video encoding means, a data output speed of the audio encoding means,
And control means for controlling the data output speed of the program information data generating means and the multiplexing ratio of the video data, audio data, and program information data of the multiplexing means. Separating means for separating the program information multiplexed into the audio signal, storing means for storing the program information separated by the separating means, and controlling the operation of the separating means and the storing means in accordance with the transmission speed of the program information Control means.

[0015] The information transmitting apparatus according to claim 1, and claim 2.
The information transmission method according to claim 1, and the providing medium according to claim 3, which encode a video signal and an audio signal, generate program information, and convert the video signal and the audio signal into:
The program information is multiplexed, and the output speed of encoding and the multiplexing ratio are controlled.

An information receiving device according to claim 4, wherein the information receiving device is
An information receiving method according to the present invention and a providing medium according to the present invention separate program information multiplexed into a video signal and an audio signal, and store the program information in accordance with the transmission speed of the program information.

According to a seventh aspect of the present invention, in the broadcasting system, the information transmitting apparatus encodes the video signal and the audio signal, generates program information, multiplexes the program information with the video signal and the audio signal, and outputs the encoded information. The information receiving apparatus controls the speed and the multiplexing ratio, separates the program information multiplexed into the video signal and the audio signal, and stores the program information in accordance with the transmission speed of the program information.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. In order to clarify the correspondence between each means of the invention described in the claims and the following embodiments, each means is described. When the features of the present invention are described by adding the corresponding embodiment (however, an example) in parentheses after the parentheses, the result is as follows. However, of course, this description does not mean that each means is limited to those described.

That is, the information transmitting apparatus according to the first aspect of the present invention provides a video encoding means for encoding a video signal (for example, the MPEG video encoder 11-1 or 11- in FIG. 1).
2) and audio encoding means for encoding the audio signal (for example, the MPEG audio encoder 12-
1 or 12-2), program information data generating means (for example, SI / EPG data generator 17 in FIG. 1) for generating program information data, and video data and audio encoding means output from the video encoding means. Multiplexing means (for example, the transport stream multiplexer 14 in FIG. 1) for multiplexing the program information data output by the program information data generating means with the output audio data; the data output speed of the video encoding means; Control means for controlling the data output speed of the encoding means, the data output speed of the program information data generation means, and the multiplexing ratio of the video data, audio data and program information data of the multiplexing means (for example, And a system controller 19) shown in FIG.

According to a fourth aspect of the present invention, there is provided an information receiving apparatus, comprising: separating means for separating program information multiplexed into a video signal and an audio signal;
2), storage means for storing the program information separated by the separation means (for example, the EPG memory 36 in FIG. 5), and control means for controlling the operation of the separation means and the storage means corresponding to the transmission speed of the program information. (For example, the system controller 38 in FIG. 5).

According to a seventh aspect of the present invention, in the broadcast system, the information transmitting apparatus includes a video encoding unit (for example, an MPEG video encoder 11-1 or 11-2 in FIG. 1) for encoding a video signal and an audio signal. Audio encoding means for encoding (for example, MPEG audio encoder 12-1 or 12-2 in FIG. 1) and program information data generating means for producing program information data (for example, SI / EPG data generator 17 in FIG. 1) ) And multiplexing means for multiplexing the data of the program information output by the program information data generating means to the video data output by the video encoding means and the audio data output by the audio encoding means (for example,
Transport stream multiplexer 14 in FIG. 1)
And the data output speed of the video encoding unit, the data output speed of the audio encoding unit, the data output speed of the program information data generation unit, and the video data, audio data, and program information data of the multiplexing unit. Control means (for example, the system controller 19 in FIG. 1) for controlling the multiplexing ratio of
A separating unit (for example, the demultiplexer 32 in FIG. 5) for separating the program information multiplexed into the video signal and the audio signal, and a storage unit (for example, the EPG memory 36 in FIG. 5) for storing the program information separated by the separating unit. ) And control means (for example, the system controller 38 in FIG. 5) for controlling the operation of the separating means and the storing means in accordance with the transmission speed of the program information.

FIG. 1 is a block diagram showing the configuration of an embodiment of the information transmitting apparatus of the present invention. Information transmission device 1
Outputs a TS based on a plurality of video and audio signals input from the outside. The MPEG video encoder 11-1 generates a video elementary stream based on a video signal input from the outside, and outputs the video elementary stream to the multiplexer (MUX) 13-1. M
The PEG video encoder 11-2 generates a video elementary stream based on a video signal input from the outside, and outputs the video elementary stream to the multiplexer 13-2.

The MPEG audio encoder 12-1 generates an audio elementary stream based on an audio signal input from the outside, and
X) 13-1. The MPEG audio encoder 12-2 generates an audio elementary stream based on an audio signal input from the outside, and outputs the generated audio elementary stream to the multiplexer 13-2.

The multiplexer 13-1 stores the video elementary stream supplied from the MPEG video encoder 11-1 and the audio elementary stream supplied from the MPEG audio encoder 12-1 in packets of a predetermined fixed length and multiplexes them. And outputs it to a transport stream multiplexer (TSMUX) 14. The multiplexer 13-2 is an MPEG video encoder 11-2.
Elementary stream and MP supplied by
The audio elementary stream supplied from the EG audio encoder 12-2 is stored in a predetermined fixed-length packet, multiplexed, and output to the transport stream multiplexer 14.

The SI database 15 supplies the stored data to the SI / EPG data generator 17. The EPG database 16 supplies the stored data to the SI / EPG data generator 17. The SI / EPG data generator 17 stores the data supplied from the SI database 15 and the EPG database 16 in a packet of a predetermined fixed length, and outputs the packet to the transport stream multiplexer 14.

The schedule database 18 stores video data, audio data, and EP data transmitted at each time.
Data such as the content of each G data, the transmission rate, and the retransmission cycle are supplied to the system controller 19. Based on the data supplied from the schedule database 18, the system controller 19 generates MPEG video encoders 11-1 and 11-2 and MPEG audio encoders 12-1 and 12-2
And controls the bit rates of the video elementary stream and the audio elementary stream output from the MPEG video encoders 11-1 and 11-2 and the MPEG audio encoders 12-1 and 12-2. Also, the system controller 19
The amount of packets output from the / EPG data generator 17 is controlled. Further, the system controller 19 includes multiplexers 13-1 and 13-2,
And transport stream multiplexer 14
And controls the video data occupied band, audio data occupied band, and EPG data occupied band with respect to the transmission path bandwidth.

The transport stream multiplexer 14 multiplexes packets supplied from the multiplexers 13-1 and 13-2 and the SI / EPG data generator 17, and outputs a transport stream.
The modulator 20 modulates the transport stream output from the transport stream multiplexer 14 by a predetermined modulation method. For example, when the transport stream is transmitted by radio waves, it is transmitted to an antenna (not shown), Output to a predetermined interface.

FIG. 2 shows that the total transmission rate of EPG information is 330 kb.
FIG. 4 is a diagram illustrating the configuration of an EIT, where ps is used. E shown in FIG.
In the IT configuration, the retransmission cycle of the program information of the other station within 6 to 24 hours is 1/2 of 10 seconds and 2 to 3 days of the program of the other station in the EIT configuration of FIG. The retransmission cycle of the information is 1/3 of 20 seconds with respect to the configuration of the EIT of FIG. 7, and the retransmission cycle of the program information of the other station from 4 to 8 days is as compared with the configuration of the EIT of FIG. It is set to 30 seconds, 1/6. For that reason,
In the configuration of the EIT shown in FIG. 2, the transmission rate of the program information of the other station within 6 hours to 24 hours is 64 kbps, and the program information of the The transmission rate is set to 60 kbps, and the transmission rate of the program information of other stations from 4 to 8 days is set to 120 kbps. Transmission of EPG data based on the configuration of the EIT in FIG. 2 requires more transmission path bandwidth than in the case of FIG.

FIG. 3 shows that transmission of EPG data is executed from time 0:00, 2:00, and 4:00 to a predetermined time based on the EIT configuration of FIG. FIG. 7 is a diagram showing a video data occupied band, an audio data occupied band, and an EPG data occupied band with respect to a transmission path bandwidth when EPG data is transmitted based on the EIT configuration of FIG.
From the time 0:00, 2:00, and 4:00 at the specified time,
The EPG data occupied bandwidth is wider than the EPG data occupied bandwidth at other times.

Conversely, the video data occupied band and audio data occupied band at predetermined times from times 0:00, 2:00, and 4:00 are the video data occupied band and audio data occupied band at other times. Compare and narrow. The bit rate of the video data and the bit rate of the audio data at a predetermined time from time 0:00, 2:00, and 4:00 are compared with the bit rate of the video data and the bit rate of the audio data at other times. , Need to lower.

FIG. 4 is a flowchart for explaining the band allocation changing process of the system controller 19. In step S11, the system controller 19
From the schedule database 18, data indicating the current band allocation of the video data occupied band, audio data occupied band, and EPG data occupied band is read.
In step S12, the system controller 19
Are the transmission rates of the video data of the channels corresponding to the MPEG video encoders 11-1 and 11-2, the transmission rates of the audio data of the channels corresponding to the MPEG audio encoders 12-1 and 12-2, and EP
Calculate the transmission rate of G data.

In step S13, the system controller 19 sets the MPEG video encoders 11-1 and 11-1.
1-2, MPEG audio encoders 12-1 and 12
-2 and the transmission rate of the packet output from each of the SI / EPG data generators 17 are set. In step S14, the system controller 1
9 provides the multiplexers 13-1 and 13-2 and the transport stream multiplexer 14 with a video data occupied band, an audio data occupied band,
Set the operation corresponding to the bandwidth allocation of the EPG data occupied bandwidth.

As described above, the information transmitting apparatus 1 can change the retransmission cycle of the EPG data at a predetermined time based on the data set in the schedule database 18.

FIG. 5 is a block diagram showing the configuration of an embodiment of the information receiving apparatus of the present invention. Information receiving device 2
Inputs a transport stream supplied from a predetermined transmission path, and outputs a predetermined video signal and a predetermined audio signal based on a signal corresponding to an operation on the remote controller 3.

The remote controller 3 transmits a predetermined infrared signal to an Ir (Infrared ray) of the information receiving apparatus 2 based on an operation of the user of the information receiving apparatus 2 such as selection of a channel.
s) Transmit to the receiver 39. The Ir receiver 39 outputs predetermined data corresponding to the infrared signal transmitted from the remote controller 3 to the system controller 38. The system controller 38 receives a packet identifier (PID: packet identification data) based on a user's channel selection operation.
Is supplied to the demultiplexer 32, and data instructing an operation based on the display operation of the user is supplied to the EPG controller 35.

The demodulator 31 demodulates a transport stream modulated in a predetermined format, and supplies the demodulated transport stream to a demultiplexer (DEMUX) 32. The demultiplexer 32 separates the transport stream and outputs a video elementary stream obtained from the packet having the predetermined packet identifier to the video decoder 33, and converts an audio elementary stream obtained from the packet having the predetermined packet identifier into an audio signal. The decoder 34 supplies the EPG data to the EPG controller 35 and the SI data to the system controller 38.

The video decoder 33 decodes the input video elementary stream and outputs a video signal of a predetermined format to the display controller 37. The audio decoder 34 decodes the input audio elementary stream,
An audio signal is output to the outside.

The EPG controller 35 stores the EPG data supplied from the demultiplexer 32 in the EPG memory 36. The EPG controller 35
Under the control of the system controller 38, data stored in the EPG memory 36 is read and output to the display controller 37 in a predetermined manner. The display controller 37 outputs a predetermined video signal to the outside based on the signal supplied from the video decoder 33 and the signal supplied from the EPG controller 35.

FIG. 6 is a flowchart for explaining the operation of the EPG data acquisition processing of the information receiving apparatus 2. In step S21, the system controller 38 determines whether or not there is a request to acquire EPG data. If it is determined that there is a request to acquire EPG data, the process proceeds to step S22, in which the user of the remote controller 3 operates. It is determined whether or not the setting of the system controller 38 acquires the EPG data only when the rate is increased (the total transmission rate of the EPG information is increased). If it is determined in step S22 that EPG data is to be acquired only at the time of rate-up, the procedure proceeds to step S23, and in step S23, the system controller 38 sets data of the rate-up time zone in the EPG controller 35. Determine whether or not.

If it is determined in step S23 that the data of the rate-up time zone has not been set in the EPG controller 35, the process proceeds to step S24, where the system controller 38 includes the data included in the SI data supplied from the demultiplexer 32. Search for data during the rate-up period of the EPG data to be updated. In step S25, the system controller 38 determines whether or not the data in the rate-up time zone has been retrieved. If it is determined that the data in the rate-up time zone has been retrieved, the system controller 38 proceeds to step S27.
The system controller 38 sets the data in the rate-up time zone as the data acquisition time in the EPG controller 35, and proceeds to step S28.

If it is determined in step 25 that data in the rate-up time zone has not been retrieved, the system controller 38 sets a default data acquisition time in the EPG controller 35, and proceeds to step S28.

In step S28, the EPG controller 35 determines whether or not the current time is the set data acquisition time. If it is determined that the current time is the set data acquisition time, Proceed to S29,
The EPG data is acquired and stored in the EPG memory 36.

If it is determined in step S28 that the current time is not the set data acquisition time, the process ends.

If it is determined in step S23 that the data for the rate-up time zone has been set in the EPG controller 35, the procedure proceeds to step S28.

If it is determined in step S22 that the EPG data is to be obtained even when the rate is not increased, the procedure proceeds to step S29, where the EPG data is obtained and stored in the EPG memory 36.

If it is determined in step S21 that there is no EPG data acquisition request, the process ends.

As described above, the information receiving device 2 can acquire the EPG data only during the time period when the rate is increased. The time zone for raising the total transmission rate of the EPG information may be determined by operation, and the information receiving apparatus 2 may be operated according to the operation.

In this specification, the system is
It is assumed that the device as a whole is constituted by a plurality of devices.

Further, as a providing medium for providing a user with a computer program for performing the above processing,
In addition to recording media such as magnetic disks, CD-ROMs, and solid-state memories, communication media such as networks and satellites can be used.

[0050]

According to the information transmitting apparatus according to the first aspect, the information transmitting method according to the second aspect, and the providing medium according to the third aspect, the video signal and the audio signal are encoded, and the program information is encoded. Since the program information is generated and multiplexed with the video signal and the audio signal to control the output speed of the encoding and the ratio of the multiplexing, when the transmission amount of the video signal and the audio signal can be reduced, the program information is reduced. Can be increased.

[0051] The information receiving apparatus according to claim 4, and claim 5
According to the information receiving method described in (1) and the providing medium described in (6), the program information multiplexed into the video signal and the audio signal is separated, and the program information is stored in accordance with the transmission speed of the program information. Therefore, the program information can be stored in a short time when the transmission amount of the program information is large.

According to the broadcast system of the seventh aspect,
An information transmitting apparatus for encoding a video signal and an audio signal, generating program information, multiplexing the program information with the video signal and the audio signal, controlling an encoding output speed and a multiplexing ratio, However, the receiver divides the program information multiplexed into the video signal and the audio signal and stores the program information in accordance with the transmission speed of the program information. It is possible to acquire program information in a short time.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an information transmitting apparatus according to the present invention.

FIG. 2 shows an EI in which the total transmission rate of EPG information is 330 kbps.
FIG. 3 is a diagram illustrating the configuration of T.

FIG. 3 is a diagram illustrating a video data occupied band, an audio data occupied band, and an EPG data occupied band with respect to a transmission path bandwidth when a transmission rate of EPG data is increased at a predetermined time.

FIG. 4 is a flowchart illustrating a band allocation change process of a system controller 19;

FIG. 5 is a block diagram showing a configuration of an embodiment of the information receiving apparatus of the present invention.

FIG. 6 is a flowchart illustrating an operation of an EPG data acquisition process of the information receiving device 2.

FIG. 7 is a diagram illustrating a configuration example of an EIT.

FIG. 8 is a diagram illustrating changes in the occupied band of video data, the occupied band of audio data, and the occupied band of EPG data with time with respect to the transmission path bandwidth.

[Description of Signs] 1 information transmitting device, 2 information receiving device, 11-1,
11-2 MPEG video encoder, 12-1, 12-
2 MPEG audio encoder, 14 transport stream multiplexer, 17 SI / EPG data generator, 19 system controller, 32 demultiplexer, 36 EPG memory, 38 system controller

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masahiko Sato 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo F-term in Sony Corporation (reference) 5C059 KK34 MA00 PP04 PP14 RA01 RA04 RB04 RB06 RB16 RC00 RC32 RC34 SS02 TA75 TB01 TC18 TD14 UA02 UA05 UA39 5C063 AA01 AB05 AB07 AB09 AC01 AC05 AC10 CA31 CA34 DA13 5K022 AA09 AA12 AA22

Claims (7)

[Claims] 1. An information transmitting apparatus for multiplexing program information into a video signal and an audio signal and transmitting the multiplexed video signal, a video encoding unit encoding the video signal, and an audio encoding unit encoding the audio signal. A program information data generating unit for generating data of the program information; and the program output by the program information data generating unit to video data output by the video encoding unit and audio data output by the audio encoding unit. A multiplexing unit for multiplexing the data of information; a data output speed of the video encoding unit, a data output speed of the audio encoding unit, and a data output speed of the program information data generating unit; Multiplexing means for multiplexing video data, audio data, and program information data; Information transmitting apparatus characterized by a control means for controlling the rate. 2. An information transmission method for multiplexing and transmitting program information to a video signal and an audio signal, wherein: a video encoding step of encoding the video signal; and an audio encoding step of encoding the audio signal. A program information data generating step of generating data of the program information; and the program output by the program information data generating step to video data output by the video encoding step and audio data output by the audio encoding step. A multiplexing step of multiplexing the data of information; a data output speed of the video encoding step, a data output speed of the audio encoding step, and a data output speed of the program information data generating step; Multiplex step video data, audio Odeta, and information transmission method characterized in that the data of the program information and a control step of controlling the ratio of the multiplexing. 3. An information transmitting apparatus for multiplexing program information into a video signal and an audio signal and transmitting the multiplexed information, a video encoding step of encoding the video signal, and an audio encoding step of encoding the audio signal. A program information data generating step of generating data of the program information; and the program output by the program information data generating step to video data output by the video encoding step and audio data output by the audio encoding step. A multiplexing step of multiplexing the data of information; a data output speed of the video encoding step, a data output speed of the audio encoding step, and a data output speed of the program information data generating step; Video data and audio data of the multiplexing step Data, and program information providing medium characterized by providing a control step and readable computer to execute processing including a program for controlling the ratio of the multiplexed data. 4. An information receiving apparatus for receiving program information multiplexed on a video signal and an audio signal and displaying the program information simultaneously with the video signal, wherein the program multiplexed on the video signal and the audio signal is provided. Separating means for separating information; storing means for storing the program information separated by the separating means; control means for controlling operations of the separating means and the storing means in accordance with the transmission speed of the program information. An information receiving device comprising: 5. A receiving method for receiving program information multiplexed on a video signal and an audio signal and displaying the program information simultaneously with the video signal, wherein the program information multiplexed on the video signal and the audio signal is provided. A separating step of separating the program information, a storing step of storing the program information separated by the separating step, and a control step of controlling operations of the separating step and the storing step in accordance with a transmission speed of the program information. An information receiving apparatus characterized by including: 6. An information receiving apparatus for receiving program information multiplexed on a video signal and an audio signal and displaying the program information simultaneously with the video signal, wherein the program multiplexed on the video signal and the audio signal is provided. A separating step of separating information; a storing step of storing the program information separated by the separating step; a control step of controlling operations of the separating step and the storing step in accordance with a transmission speed of the program information. A computer-readable storage medium for providing a computer-readable program for executing a process including: 7. An information transmitting apparatus for multiplexing and transmitting program information to a video signal and an audio signal, receiving the program information multiplexed to the video signal and the audio signal, and transmitting the program information simultaneously with the video signal. In a broadcast system including an information receiving apparatus for displaying, the information transmitting apparatus includes: a video encoding unit that encodes the video signal; an audio encoding unit that encodes the audio signal; and data of the program information. Multiplexing the data of the program information output by the program information data generating means on video data output by the video encoding means and audio data output by the audio encoding means. Multiplexing means, data output speed of the video encoding means, audio encoding means Control means for controlling the data output speed of the program information data generating means, the data output speed, and the multiplexing means for controlling the multiplexing ratio of video data, audio data, and program information data. A separating unit that separates the program information multiplexed into the video signal and the audio signal; a storage unit that stores the program information separated by the separating unit; a transmission speed of the program information Control means for controlling the operation of the separation means and the storage means.