JP2769535B2 - Television and radio broadcasting and receiving systems and devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to television broadcasting, AM, F
The present invention relates to a new method for transmitting a radio broadcast including M and short waves, and a system and apparatus for receiving, storing, editing, and reproducing the same. More specifically, the system corresponds to a code number when transmitting a broadcast wave. The receiving side is provided with a means capable of rationally storing, editing and reproducing based on the code number.

[0002]

2. Description of the Related Art In today's television and radio broadcasting programs, as the number of channels increases and satellite broadcasting is added, the program contents are diversifying. -Includes valuable programs such as music, sports, science, etc. that meet your hobbies,
These are valuable information provisions where a great deal of human effort has been put in the information society today. However, on the other hand, in a cobblestone mix including programs with low value,
It is difficult to proactively select what programs are necessary for me, because the huge amount is provided in a disorderly manner. Therefore, the contents of television and radio broadcasts are:
In order to spend the time at that time interestingly, it is only heard and the value of diversified modern people is not very consistent with their hobbies and requirements, and the value of use is reduced. Tend to be.

2. Description of the Related Art On the other hand, there is a conventional means of reservation recording. If a time and a channel are designated in a video apparatus, a broadcast program can be recorded automatically. In the means, the transmitting side modulates information such as music and conversation on a carrier wave and transmits it. The receiving side receives the information by an antenna and a receiver, extracts information from the modulated wave, and outputs the information to a magnetic tape of a video device. In this method, the data is stored in a storage medium such as a lamp, amplified when necessary, and reproduced on a cathode ray tube, a speaker, or the like.

[0003] However, the video apparatus has the following disadvantages. (A) In order to make a scheduled recording, a program to be watched by the user must be selected in advance from a program column of a newspaper or a weekly schedule, and must be written for each program in accordance with the operation procedure of the recorder. It is very troublesome for a busy person to perform this frequently, and therefore, the utilization rate of the scheduled recording by the video apparatus is low unless it is particularly necessary. (B) In normal recording, recording is performed on a magnetic tape in the order in which it was broadcast. Therefore, when the program is taken out, it can only be taken out in the recording order. It is troublesome to search for a recording place while sending by fast forward etc. because it cannot be picked up.

[0004]

SUMMARY OF THE INVENTION Based on the above situation,
The present invention departs from the conventional concept and provides a means of coding to the transmitting side so that the receiving side can automatically classify and organize the necessary programs so that the necessary programs are troublesome. The aim is to make it easy to play back.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a television and radio broadcasting and receiving system comprising: (a) information relating to broadcasting;
Classify reports and set code numbers corresponding to the classification
The code number is converted to a binary data signal,
B, normal broadcasting within the occupied frequency band of radio broadcast transmission waves
Influenced corner area or FM broadcast pilot signal
Gap, or between the sub-channel and the SCA channel
, The broadcast modulates the binary data signal relates to a broadcast while interpreting (b) receiving the broadcast, the binary data
Adding a code number to the information and storing it in a storage device; (c)
At the time of reproduction, it is configured to search and edit based on a code number to select a desired program and to make it a video or audio, and the binary data signal is included in the occupied frequency bandwidth of the broadcast wave. It is preferable that a shift signal having a constant amplitude is inserted at two different frequencies, and one is defined as "0" and the other is defined as "1".

[0006]

The transmitting side classifies the information related to the broadcast, and
Set the code number corresponding to the type, and set the code number
Is converted to a binary data signal, and transmission of television and radio broadcasts is performed.
A corner that does not affect normal broadcasting within the frequency band occupied by the signal wave
Area, or the gap between pilot signals of FM broadcasting, or
Between the channel and the SCA channel.
When the broadcast is modulated , the receiving side can interpret the binary data from the broadcast and store the code number and the program content in the storage device in association with each other, and at the time of storage or reproduction, based on the code number. A desired program can be selected by searching and editing, and can be automatically imaged or voiced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below . Numerical values for television broadcasting, radio AM broadcasting, FM broadcasting, short-wave broadcasting, etc.
For analog broadcast programs that do not include digitalization. In transmission of these broadcasts, first, a wave of a fixed width called a carrier wave is modulated on information such as music and conversation, and this is incorporated in a transmission circuit and amplified for broadcasting. However, in the transmission according to the present invention, information relating to broadcasting is classified, a code number corresponding to the classification type is set, the code number is converted into a binary data signal, and an occupied frequency band of a transmission wave of television and radio broadcasting is transmitted. In this method, the binary data signal is modulated and broadcast in a corner area that does not affect normal broadcasting, in a gap between pilot signals of FM broadcasting, or between a sub-channel and an SCA channel. The binary data signal is
The binary signal code of “0” or “1” is inserted and transmitted from the transmitter. The specific method of transmitting the binary signal of “0” or “1” is based on the occupation of the broadcast wave. Shift signals f ₁ and f ₂ having constant amplitudes are transmitted at two different frequencies within the frequency bandwidth, and f ₁ is defined as “0” and f ₂ is defined as “1”. At this time, the amplitudes of f ₁ and f ₂ are at least large enough to be distinguished by a receiving system described later, but f ₁ and f ₂ may be confused with the frequency components of the information contained in the sidebands. Yes, the following measures are taken to solve it. That is,
The amplitudes of the frequencies f ₁ and f ₂ are set to the amplitudes and transmission times equal to or greater than the frequency components indicated by the normal information, and the frequencies f ₁ and f ₂ are used by the frequency components of the normal information in the occupied frequency bandwidth. FIG. 1 shows a spectrum set at a corner area where the frequency is not set and the spectrum of the frequency is displayed. It is desirable that the shift frequencies of f ₁ and f ₂ are separated from each other, but there is no problem if an interval of 100 Hz or more is maintained. Although the shift signal becomes noise as it is, a trap circuit may be incorporated in a demodulator on the receiving side to be described later and removed. As a specific example of the shift signal, for example, in the first broadcast of NHK, the carrier is 594 kHz and the occupied frequency bandwidth is about 15 k.
Hz, 601 kHz is set to "0" and 600.9 kHz is set to "1" from the surrounding sideband.

Alternatively, the occupied frequency band of a normal AM broadcast has information on the left and right sides of a carrier, but in the present invention, only one of the left and right is used for information, and the shift signals f ₁ and f ₂ are used for the other.
, A data signal can be sent together with the information.

In setting the binary data signal, FM
In the case of broadcasting, as shown in FIG. 2, since there is a non-audible range between the upper and lower gaps of the pilot signal for stereo broadcasting or the sub-channel and the SCA channel, the shift signals f ₁ and f are located in the non-audible range. Insert ₂ . Then, on the one hand, the monaural broadcast is played, and on the other hand, the shift signals f ₁ , f ₂
Can be transmitted, and there is no possibility that the data signal becomes noise even if the data signal is reproduced as it is.

[0010] Then, how to transmit the said binary data signal, inserts a start signal for causing foreseen to the receiver that the future binary data signal is transmitted before the data signal while the data signal After, a stop signal is inserted. The start signal causes a receiver described later to start preparation for binary data signal decoding, and the stop signal
Conversely, the end of the transmission of the binary data signal is notified to the receiver. Among them, the stop signal is usually inserted for the purpose of confirmation, although the end can be sensed without this.
As the start signal and the stop signal, for example, as shown in FIG. 3, before and after the data signal, a shift signal corresponding to the above “0” is sent for a predetermined time.

In the transmission of this binary data signal, it is a rule to add the information when the broadcasting station transmits information such as music. Alternatively, a transmitting station dedicated to the data signal is provided separately from the broadcasting station. And you can send it from there.

Next, the relation between the binary data signal and the broadcast contents is described.
The person in charge classifies information about broadcasting, such as broadcasting stations and program contents.
Then, a code number corresponding to the classification type is set, and the code
The code number is converted into a binary data signal. code
The setting of the number is performed, for example, for (a) the broadcast station channel
Category, (b) Classification of program content by genre, (c) Genre
Separate the classification into three more subdivided concepts,
A code number is assigned to each. Information about the broadcast here
Is a broadcast that includes program content such as the name of the broadcast station and the genre of the program.
Refers to all information related to transmission. First, four digits are assigned to the channel classification, and individual numbers are set for 16 sets of broadcast channels, and are associated as follows. 0000-NHK 0001-NHK Education 0010-Nippon Television 0011-TBS Television ... Next, the genre is divided into 32 genres by assigning 5 digits, and a code number is set for each of them, associating as follows. . 00000-Music 00001-News 000010-Science 00011-Cooking ... The segmentation classification is too broad in the concept of a music program, and when a favorite program cannot be selected, the content is further segmented and coded. Four digits are assigned and number setting is performed. 0000-Classic 0001-Popular 0010-Jazz 0011-Folk Song ... The above-mentioned classification method and the setting of the number of digits are just an example, and are not limited to these. And the number of digits can be freely changed. Soshi
To convert this code number into a binary data signal,
Broadcast by the above means.

Next, a method and an apparatus for receiving, editing and reproducing a radio wave including the binary data signal will be described with reference to FIGS. First, the same radio wave is received by a receiver through an antenna, a carrier is separated from a modulated wave, and information is extracted and demodulated. This is the same as in the related art. However, in the present invention, a plurality of channels are used for this reception. Since simultaneous reception is required, a receiver capable of simultaneously receiving a plurality of channels is used, or a plurality of receivers corresponding to the number of channels are provided. Then, a plurality of demodulators are set in accordance with the number, and after each demodulation, a binary data signal as a digital signal and a signal of the program content as an analog signal are separated. The binary signal of the digital signal is
The data is sent to the decoder as it is, and the code number is decoded from the binary signal in conjunction with the computer, and the contents of the channel, genre, and subdivision are read.

On the other hand, the analog signal of the program content is sent to a storage device after being converted from an analog signal to a digital signal by an A / D converter and converted into an analog signal.
A plurality of demodulators may be provided in accordance with the number of the demodulators. However, in order to reduce the size of the device, one storage device corresponds to the plurality. Therefore, when converting an analog signal from a demodulator to a digital signal, a multiplexing process of sequentially converting a plurality of channels at a speed faster than the analog signal is performed. For example, the digital signal from the demodulator is time-divided. Once into one signal, and then
The signal is returned to the original signal again based on the signal from the decoder in conjunction with the data, and is sequentially stored in the storage device. As a result, the code number of the binary signal and the program content changed to the digital signal are stored in the storage device in association with each other, and the storage location is determined by the decoder based on the data signal. Classified and managed by computer. This storage medium is desirably a medium that can be randomly accessed, such as an optical disk or a magnetic disk, in the sense that the storage medium can be designated and taken out by a computer during reproduction, which will be described later.

In this storage process, two methods have been proposed. One is to set the capacity of the storage medium as large as possible, and to store the contents of a broadcast program for one day or one day. This is a method of storing the entire range as a week. As described above, this full-range method demodulates all radio waves received from a plurality of channels, separates the signals into digital signals and analog signals, and sends them to a storage device for storage. Since all programs are stored when a genre of a desired program, its subdivision, etc. are designated and taken out, it is excellent in that any search and editing can be performed during reproduction. However, in reality, the storage capacity of a storage device is limited, and the full-range method has a drawback that leads to an increase in the size of the device and a rise in price.Moreover, programs to be stored are limited in advance by genre and sub-classification. Because there are many cases,
As another method, a specification method is adopted in which the contents to be stored are limited by specifying a code number. In this method, the contents of a program to be stored in advance are specified by a computer process before storage, and the specified contents are stored in a storage medium based on the interpretation contents of a decoder. If you want to store only news programs,
A genre code number -00001 is designated, and only the designated news program is stored. According to this,
Although there is a drawback that editing and reproduction cannot be performed later when there is a designation omission, practical advantages such as downsizing of a storage device and provision at a low price are great.

In order to increase the capacity of the storage device,
Compression processing can be performed. That is, if there is the same data among the transmitted signals, it is not stored as it is, but the number of data is counted and the number and order are stored. Let
Undo based on their number and order during playback. As a result, since the same data is present in a large amount in television images or the like, the storage capacity can be greatly increased by the compression processing.

In addition, in order to supplement the storage capacity of the storage device, a method in which a plurality of storage media are stacked or a sub storage device is provided in parallel is also effective. FIG. 5 shows a sub-storage device. When a program of a genre specified in advance is broadcast, one of the two separated signals after demodulation is separated.
The value data signal is sent to a decoder, and the information of the other analog signal is sent to a secondary storage device having a relatively large storage capacity, such as a magnetic tape, and stored therein. Thus, even if the capacity of the storage device is limited, it can be handled by increasing the magnetic tape of the secondary storage device. However, the playback in this case is
Since random access is not possible, it is used only as an auxiliary means.

When the storage in the storage device is completed, the stored contents are searched and edited as necessary from the stored contents, or are searched from previously specified and edited storage, and are imaged or voiced. Reproduce. First, data is transmitted from the storage device to the D / A converter, the digitized and stored information is converted into an analog signal, which is amplified and transmitted to a cathode ray tube or a speaker. Video or audio. At this time, what is important is that by specifying a code number for the content of the program to be reproduced, the program desired by the user can be classified by genre and subdivision, and only the program can be extracted. That is, the computer
The information stored in the storage device can be copied
It can be called by identifying it by its code number, and can be transmitted to the reproducing device instantly by random access. At this time, it is possible to freely select and sort by a command given to the computer irrespective of the storage order in the storage device. Editing is possible.

As a specific example of search and editing of the reproduced program, the following designation is possible. (A) Multi-channel comparison type When a certain incident occurs, the content of news and commentary may differ for each broadcasting station for the same incident, so compare the news content based on the difference in handling. . (B) Same content collection type A program that matches one's hobby, such as music, sports, and movies, is designated, collected and stored, pulled out and played at any time. In this case, a movie with a long storage time
In this case, there is a possibility that the capacity of the storage device will be insufficient.
As described above, shortage of capacity can be compensated for by connecting to a secondary storage device such as a magnetic tape and storing it in the secondary storage device. (C) Series program collection type Increasing the value of information by increasing the number of health laws and cooking programs, etc., or continuously storing educational programs such as chemistry and physics that have been serialized Then, take a look at this, and get to know each other and deepen their understanding. (D) Program designation type If there is a special program or the like, its code number is set in advance, the viewer is notified in advance, and the special program is stored by that code number. To entice you. (E) Editing function by computer It is also possible to edit and play back the stored contents, to connect baseball and sumo by alternately interrupting them, and to connect music with jazz-pop songs-classical music. The genre is changed to be played at regular intervals, news-music-science-sports, etc. are combined at different time intervals, and edits to enjoy the unique combination of the person.

Then, when the reproduction is completed, the storage device erases the stored contents and prepares for the next storage, or when the storage capacity becomes full, regardless of whether or not the storage has been reproduced. The information may be automatically deleted and new information may always be stored. Of course, in conjunction with the secondary storage device, the searched and edited storage can be transferred to another storage medium and permanently stored.

[0021]

The present invention has the following effects based on the above configuration. (A) Codes for information on broadcasting such as broadcasting stations and program contents
Numbers are assigned, modulated to binary data signals and broadcasted, and the receiving side
Organizes and categorizes program content based on the code signal.
Viewers can open the way
The required information can be automatically extracted simply by specifying the issue number.
You can specify the conventional time and channel each time
Eliminates the hassle of making scheduled video recordings
And discover new ways to use TV and radio
It has an epoch-making effect that it can be done. (B) Since the search is automatically performed over the entire range of the broadcast, the information required by the user is collected without omission, and the information is automatically classified and arranged, so that news,
The information value of broadcasting can be dramatically improved in various fields such as hobbies and learning. (C) A device embodying this also transmits a binary data signal using the occupied frequency region of the carrier, and on the receiving side,
Codes information related to broadcasting in conjunction with a computer
It has a number of excellent functions, such as a device that stores numbers and stores it, and a combination of a computer and a playback device that enables automatic search.

[Brief description of the drawings]

FIG. 1 is a graph showing an example of a transmission wave of the present invention in which a data signal is added to a carrier wave.

FIG. 2 is a graph showing an example of a transmission wave of the present invention to which a data signal is added in the case of FM broadcasting.

FIG. 3 is a graph showing an example of transmitting a binary data signal.

FIG. 4 is a block diagram showing an example of the device of the present invention.

FIG. 5 is a block diagram showing another embodiment of the device of the present invention.

Claims (5)

(57) [Claims] (A) classifying information relating to broadcasting, setting a code number corresponding to the classification type, converting the code number into a binary data signal, and occupying a frequency band occupied by transmission waves of television and radio broadcasts; Means for modulating and broadcasting the binary signal in a corner area which does not affect the normal broadcasting, in a gap between pilot signals of FM broadcasting, or between a sub-channel and an SCA channel, and (b) the broadcasting , And interprets the binary data, attaches a code number to information related to broadcasting, and stores the information in a storage device.
Bei means for, (c) at the time of reproduction, the search based on the code numbers, and selecting a program wants to edit, and means for imaging or vocalized
TV which is characterized in that there were example, radio broadcasting and receiving system. 2. (a) Classifying information related to broadcasting, setting a code number corresponding to the classification type, converting the code number into a binary data signal, and occupying a frequency band occupied by transmission waves of television and radio broadcasting. Means for modulating and broadcasting the binary signal in a corner area which does not affect the normal broadcasting, in a gap between pilot signals of FM broadcasting, or between a sub-channel and an SCA channel, and (b) the broadcasting Means for interpreting the binary data and retrieving and editing broadcast-related information based on the code number, storing the retrieved and edited information in a storage device with a code number, (c) At the time of playback, means to search and edit based on the code number to select the desired program, and make it into a video or audio
TV which is characterized in that there were example, radio broadcasting and receiving system. 3. Classification of broadcast-related information, setting of a code number corresponding to the classification type, conversion of the code number into a binary data signal, and normal conversion within a frequency band occupied by television and radio broadcast transmission waves. A transmitting device that modulates and broadcasts the binary data signal between a corner area that does not affect broadcasting, a gap between pilot signals of FM broadcasting, or a sub channel and an SCA channel, and a reception device that can receive a plurality of channels. A receiver or a plurality of receivers, a demodulator corresponding thereto and capable of separating a binary data signal and information, a decoder for receiving the binary data signal from the demodulator and interpreting it in conjunction with a computer A, which converts an analog signal from a demodulator into a digital signal
A / D converter, a storage device for storing a signal from the A / D converter in association with a binary data signal, and a D / A converter for converting a digital signal of storage data designated by a code number into an analog signal And a computer that cooperates with the decoder, the A / D converter, the storage device, and the D / A converter to instruct and control each device, and amplifies the signal from the D / A converter. A television and radio broadcasting and receiving device comprising a reproducing device for reproducing on a CRT or a speaker. 4. A shift signal having a constant amplitude at two different frequencies is inserted into an occupied frequency bandwidth of a broadcast wave, and one is defined as “0” and the other is defined as “1” to convert a binary data signal. The television and radio broadcasting and receiving system according to claim 1 or 2 , wherein the system comprises: Between 5. A / D converter and the storage device, according to claim 3 obtained by connecting the device for multiplexing a plurality of digital signals
TV and radio broadcast and receiving device as described.