JP2903571B2 - Multiplex signal receiver - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to reception signal selection of a character multiplexed signal receiving apparatus.

[Related Art] Teletext multiplex broadcasting is a broadcast with great potential when viewed as means for transmitting textual information to ordinary households, and its broadcasting area is expanding. Eventually, it will be introduced to CATV, etc., and will occupy an important position as a means of transmitting local and public information to households. The minimum required functions of such a teletext receiver include a function of selectively receiving a broadcast from a plurality of broadcast radio waves in which text information is multiplexed in conjunction with time information: A, a received text. There is a function B for selecting information required by the receiver from the multiplex broadcasts, and a function C for recording the selected information as a character code. Special function: C is an essential function for processing that information with a word processor or the like.
It must be recorded on a 3.5 or 5 inch floppy disk. The conventional character multiplex signal receiving device is an integrated TV signal receiving device (integrated type), and a video signal is input from the TV signal receiving device, the multiplexed signal is processed, and the video signal is converted to a TV signal receiving device. There was a thing (separate body type) to output to. Although the integrated type has a function A and a function B incompletely, the function C is not considered at all.
In the separate type, a product with information exchange means with an external information device and a product built in a personal computer to supplement function: B and function: C were also commercialized, but function: A was completely considered. Not. On the other hand, in current text multiplex broadcasting, character information having a characteristic is multiplexed from a plurality of stations into a TV signal and broadcast. Therefore, in order to selectively obtain the information required by the user, the functions of A, B, and C are indispensable, but the spread of teletext broadcasting itself has been delayed because there is no teletext signal receiver that satisfies this function. I have.

[Problems to be Solved by the Invention] As described above, the conventional character multiplexed signal receiving apparatus has a problem that it does not satisfy essential functions that the character multiplexed signal receiving apparatus should originally have. Therefore, in the present invention, the function: A
The object of the present invention is to provide a character multiplexed information signal receiving device which is inexpensive and has the required functions by providing a separate type character multiplexed signal receiving device having a receiving frequency means of a TV signal receiving device capable of supporting the It is.

[Means for Solving the Problems] A multiplex signal receiving apparatus according to the present invention comprises an external information device and an external TV.
A multiplex signal receiving device configured to be connectable to a signal receiving device, a decoding unit that receives a video signal transmitted from the external TV signal receiving device, and decodes multiplexed information multiplexed into the video signal. Pattern conversion means for converting coded pattern information other than the coded character information decoded by the decoding means into coded character information based on a previously registered pattern conversion table; and temporarily storing the decoded multiplexed information. Storage means, information exchange means for exchanging information with the external information device, reception frequency control means for controlling a reception frequency of the external TV receiver based on a command of the external information device, and the external information Selection control means for acquiring information that satisfies a selection condition for the multiplexed information in response to an information selection request of a device, wherein the external information device provides the selection condition. It is configured so that information that satisfies is satisfied.

 Hereinafter, the present invention will be described in detail with reference to examples.

Embodiment FIG. 1 is a block diagram showing a configuration of a character multiplexed signal receiving board according to an embodiment of the present invention. 10 is a character multiplexed signal decoding circuit, 11 is a CPU interface circuit, and 12 is a remote control signal creation circuit. The board of the present embodiment is a board that can be inserted into an expansion board slot of a general-purpose personal computer, uses a CPU of the personal computer main body to process a character multiplexed signal, and records a received information by using a personal computer main body and Various floppy disks, hard disks,
Printer can be used. The operation of this board will be described with an example in which the user automatically records a program in which an actor H appears. First, the CPU of the personal computer receives a command to record the program of actor H using an input device. Then, the remote control signal generation circuit 12 is controlled to instruct the TV signal receiver to select the frequency of the broadcast station L. At this time, the TV signal receiver only has to have a TV signal receiving function such as a VTR. The TV signal converted into a video signal from the TV signal receiving device is input to the decoding circuit 10. The decoding circuit 10 samples this signal, extracts multiplexed character information, performs error correction and error detection, and buffers the obtained data.
Record in RAM. At the same time, the CPU informs the CPU via the CPU interface circuit 11 that the data has been prepared in the buffer RAM. The CPU of the personal computer receives this information and processes the information in the buffer RAM. In this example, program schedule information is selected, and the program information of the actor H is selected from the information. That is, when there is no information to be found in the information of the buffer RAM, the next reception is instructed to the decoding circuit 10. When the desired information is obtained, the CPU outputs a recording instruction such as a broadcast channel, a recording start time, and an end time of the selected program to the VTR from the remote control signal generation circuit 12. At this time, the user is prompted to change the tape as necessary. This remote control signal generation circuit 12 is disclosed in
It has the configuration disclosed in 95 and controls all the infrared remote controls, so you can freely control the AV equipment owned by the user. The feature of the board with this configuration is CP
The board is very inexpensive because the U and data recording devices depend on a personal computer.

FIG. 2 is a block diagram showing a configuration of a character multiplexed signal receiving apparatus according to one embodiment of the present invention. In addition to the embodiment shown in FIG. 1, a control circuit 20, a recording circuit 21, a power supply 22,
An interface device 23 is provided. The interface device 23 with the external information device is SCSI (small computer sys
tems interface), so you can exchange data with any personal computer. In this embodiment, when an information selection request is input from an external information device via an interface device 23, the control circuit 20 stores the selection conditions in a storage circuit 21, and the control circuit 20 differs from the embodiment shown in FIG. Similarly, selective reception of information is performed. The selected information is stored in the storage circuit 21 and, if necessary, the interface device 23
Is output to an external information device. Since all the information selection processing is performed by the control circuit 20, the external information device can execute selection reception of information, automatic recording, and the like only by giving selection conditions.

Further, in the signal processing in the embodiment of the present invention, conversion of pattern information into character information is also performed. In the current text multiplex broadcasting, pattern information is coded together with coded character information and transmitted, as is called a hybrid transmission system. This pattern information is information that is greatly affected by the type (color, number of dots) of the display device. The present embodiment has a function of converting such pattern information into character information in order to enable the information to be processed by more information devices and to effectively utilize the information. For example, in the character multiplexed signal of the weather forecast, an umbrella pattern representing "rain" and a sun pattern representing "sunny" are converted into character codes of "rain" and "sunny", respectively. This is realized by displaying a character multiplexed signal in a pattern, allowing the user to select a corresponding character, and registering the character code. With this method, a conversion table is created, and a pattern registered for each broadcast program is converted.

Although the embodiments have been described above, the present invention can be applied not only to the above embodiments but also to a broadcast reception processing apparatus in which text information is multiplexed widely.

[Effects of the Invention] As described above, according to the present invention, a function of selectively receiving a broadcast from a plurality of broadcast waves in which information is multiplexed and a receiver being required from among the received multiplexed information are required. It is possible to provide an inexpensive and practical multiplex signal receiving apparatus having a function of selecting information to be obtained and capable of acquiring and recording information selected by an external information device. In particular, by providing the pattern conversion means, the received information can be processed by more information devices, and the information can be effectively used.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a character multiplexed signal receiving board according to one embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a character multiplexed signal receiving device according to one embodiment of the present invention. . Reference numeral 10 denotes a decoding circuit, 11 denotes an interface circuit, 12 denotes a remote control signal generation circuit, 20 denotes a control circuit, 21 denotes a storage circuit, 22 denotes a power supply device, and 23 denotes an interface device.

Claims (1)

(57) [Claims] 1. A multiplex signal receiving device configured to be connectable to an external information device and an external TV signal receiving device, wherein the multiplex signal receiving device receives a video signal sent from the external TV signal receiving device and multiplexes the received video signal. Decoding means for decoding the decoded multiplexed information, and pattern conversion means for converting coded pattern information other than the coded character information decoded by the decoding means into coded character information based on a previously registered pattern conversion table. A storage unit for temporarily storing the decoded multiplexed information, an information exchange unit for exchanging information with the external information device, and a reception frequency of the external TV receiving device based on a command from the external information device. Receiving frequency control means for controlling, and selection control means for acquiring information satisfying a selection condition for the multiplexed information in response to an information selection request of the external information device, External information multiplexed signal receiving apparatus configured to be able to retrieve the selection condition is satisfied information by the device.