JPH05316079A - Information processing unit - Google Patents

Abstract

PURPOSE:To generate a significant picture after two information signals fed via different transmission lines are synthesized. CONSTITUTION:A 1st information signal SA received by an antenna 12 is fed to an adder 38. A 2nd information signal SB fed to an optical fiber terminal 14 is fed to the adder 38. The timing of both information signals is adjusted so that the invalid part of the 1st information signal SA is the valid part of the 2nd information signal SB and both are synthesized in the state and the result is fed to a display device 18. Let the 2nd information signal SB be a main pattern signal, a complete picture cannot be reproduced without the 2nd information signal SB.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for use in a transmission system that provides a single set of information by combining signals using satellites and terrestrial waves using optical fibers as a transmission medium. Regarding a processing device.

[0002]

2. Description of the Related Art At present, in an information transmission system using a terrestrial wave or a satellite broadcast wave, a method of scrambling the terrestrial wave or the satellite broadcast wave itself for transmitting the information is a means for concealing the information. Has been taken. In this case, the terrestrial wave itself transmitted from one system can be descrambled to recover the collected information. The same applies when using satellite broadcast waves.

[0003]

Therefore, unless descramble processing is performed on the transmitted information, the user cannot know what kind of information is being transmitted, even if the contents are brief.

The state before descrambling does not serve as an appropriate stimulant for the user, and information cannot be selected. In such a case, by displaying a part of the information so that the user can understand the information as it is, it becomes possible for the user to select whether or not the information is desired by only the content of the part. Is very convenient.

Since this part of the information is not scrambled, this part of the information can be used for the self-promotion effect. The partial information may be a part of one piece of information, or may be meaningful information only after combining two pieces of information.

Therefore, the present invention has solved such a conventional problem as described above, and the meaningful information is reproduced only after transmitting the information by dividing it into two or more and combining the information. An information processing device is proposed.

[0007]

In order to solve the above problems, according to the present invention, a first information processing means for processing a first information signal and a second information processing for processing a second information signal. The processing means, the combining means for combining the first and second information signals, and the combining control means for controlling the combined state of the first and second information signals are provided, and the first and second In the information signal, a predetermined portion of the desired information signal is formed as an invalid portion, and the combination control means is controlled so that the first and second effective portions do not overlap. It is characterized by that.

[0008]

As the first and second information signals, any one of analog image signal, analog audio signal, digital image signal, digital audio signal, digital data, computer program data and computer data is used. As the signal, terrestrial waves or package media is used.

As the second information signal, a signal transmitted from an optical fiber or a satellite broadcast wave is used.

FIG. 2 shows the antenna 12 as the first information signal.
The ground wave supplied from the optical fiber cable terminal 14 is used, and the signal (for example, INS64) supplied from the optical fiber cable terminal 14 is used as the second information signal. The first and second information signals are processed as shown in FIG. 4 in the signal processing means 16 which constitutes the synthesis control means.

As shown in FIG. 4, for the first and second information signals, the effective portions VA and VB and the ineffective portion IA of the signal, respectively.
The IB is present and one piece of information is displayed by combining the valid parts of the first and second information signals.

If the second information signal constitutes the main screen and the first information signal constitutes the auxiliary screen, the information of the entire screen cannot be known only by the auxiliary screen. When the user looks at the screen and finds the information valuable, obtaining the main screen information will provide complete information.

This transmission system is particularly effective when satellite broadcasting wave receiving means and optical fiber terminals are provided as terminal devices in the home.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a case where an example of an information processing apparatus according to the present invention is applied to the above-mentioned transmission system will be described in detail with reference to the drawings.

First, the basic concept of the information processing apparatus 10 according to the present invention shown in FIG. 2 will be described. In the present invention, meaningful aggregated image information is displayed on a display device such as a CRT for the first time by combining the first and second information signals. Further, in this example, the image information PA based on the second information signal is used as the main screen information, and the image information PB based on the second information signal is used as the auxiliary screen signal.

As the first and second information signals, any one of analog image signals, analog audio signals, digital image signals, digital audio signals, digital data, computer program data, and computer data is used, and the first information is used. As the signal, terrestrial waves or package media is used.

In the following example, an analog image signal using terrestrial waves is used as the first information signal, and a second information signal is transmitted by a signal transmitted through a transmission line different from the terrestrial wave, for example, by an optical fiber. The case where a digital image signal is used.

In FIG. 2, reference numeral 12 is an antenna for receiving terrestrial waves, terminal 14 is a receiving terminal for digital image signals transmitted by an optical fiber cable, and is a terminal portion of an optical fiber terminal device.

The first information signal SA received by the antenna 12 (a signal in the same form as a television signal)
Then, the second information signal SB supplied to the terminal 14 is supplied to the signal processing means 16 functioning as a combining control means, respectively, and both signals are combined.

In this case, the display area of the image information PA by the first information signal SA is a hatched area in FIG. 3A (this area can be set arbitrarily), and the display of the image information PB by the second information signal SB is performed. When the area is a hatched area in FIG. 9B (the remaining display area of the image information PA), both image information are combined to display the display device 18 such as a CRT (FIG. 2).
To obtain a composite image as shown in FIG. 3C.

Since the second image information PB constitutes the main screen information, meaningful and organized information is displayed only by the composite image. However, the auxiliary screen information of the first image information PA alone does not mean that the screen content cannot be understood at all, and the first image information PA is displayed so that the entire screen can be predicted to some extent only by this auxiliary screen information. The area (size, display position, etc.) shall be defined.

As shown in FIG. 4, the first and second information signals SA and SB are respectively composed of valid portions VA and VB and invalid portions IA and IB, and the valid portions VA and VB.
As a result, the image information PA and PB as shown in FIG. 3 is formed.

On the other hand, the invalid portions IA and IB are portions that do not contribute as image information. Therefore, here, the information level for encryption at the time of scrambling, etc., and the signal level such as white and black are displayed. Can be used as an insertion area for control information for maintaining a constant value of, or a signal for inserting information that has nothing to do with the information signal (such as commercial information or information information for descrambling). ..

First information signal SA and second information signal SB
Are not supplied at the same time. For example, the first information signal SA is free of charge, and only the second information signal SB is supplied to the user as a fee. When scrambling, it is possible to scramble either or both of the first and second information signals SA and SB, but in practice, not scrambling is necessary to obtain the second information signal. It seems to result in accelerating the enrollment procedure.

In FIG. 2, reference numeral 20 denotes a keyboard,
As a result, the processing content of the composite image is controlled based on the command. The first and second information signals SA and SB are previously shown in FIG.
4A or 4B based on a command from the keyboard 20 as long as the data is transmitted in a state where valid portions VA, VB and invalid portions IA, IB exist like A and B, respectively. It may be generated again in such a signal form.

For example, when using a dedicated terrestrial wave or using a package medium, it is convenient to use the first information signal SA already processed as shown in FIG. 4A. In that case, A first information signal SA as shown in FIG.
The second information signal SB dedicated to the terminal will be provided for a fee, and the terminal on the user side will be simplified accordingly.

FIG. 1 shows a specific example of such an information processing apparatus 10. It is assumed that the first and second information signals SA and SB have already been processed as shown in FIG.

The first information signal SA received by the antenna 12 is demodulated by the demodulation circuit 22 and its demodulated output (referred to as the first information signal for convenience of explanation) SA is supplied to the adder 38 which performs signal combining processing. It The PLL circuit 24 is driven based on the synchronizing signal separated from the first information signal SA to generate a synchronizing signal synchronized with the input synchronizing signal, which is supplied to the timing signal generating circuit 26 to function as a timing signal. Various clock signals (write clock signal etc.) are generated.

The keyboard 20 is connected to the timing signal generation circuit 26, and the generation timing of the timing signal when necessary and the write and read timing for the video memory 34, which will be described later, are controlled.

As the optical fiber cable terminal 14, a digital input terminal 14a and an analog input terminal 14 are used in this example.
b and are provided. A terminal device (not shown) in which a transmission line such as an optical fiber is terminated is connected to each of them. The second information signal SB, which is a digital signal, is decoded by the decoder 30, and the second information signal SB supplied as an analog signal is processed by the A / D converter 3
It is once converted into a digital signal by 2 and is supplied to the video memory 34.

One of the signals is written in the video memory 34 based on the write clock signal output from the generation circuit 26. Similarly, data is read by the read clock signal output from the generation circuit 26, and this is returned to an analog signal by the D / A converter 36.

The analogized second information signal SB is supplied to the adder 38 together with the first information signal SA to be a combined information signal SC (FIG. 4C), and then to the video processor 40 for γ correction or the like. Signal processing is performed and then supplied to the display device 18 via the video driver 42.

When signals already processed as shown in FIG. 4 are used as the first and second information signals SA and SB, the first and second information signals SA and SB are simply synchronized with each other. Can be synthesized correctly. Otherwise, the invalid portion IA of the first information signal SA and the valid portion VB of the second information signal SB are controlled so as to be correctly matched.

When a digital signal is used as the second information signal SB, the existing optical fiber (INS64
Net) transmission rate is 1B (= 64K bytes) and 2B (=
128 Kbytes). If the image information of the NTSC signal level is 720 pixels in the horizontal direction and 420 lines are used and the image information is 30 frames per second, a level of 352 pixels × 240 lines can be ensured even when the data compression is performed. , 30 frames / sec ... (1)

Assuming that this is compressed to about 1 Mbps, the image frame through which the above-mentioned optical fiber can be passed at this compression rate is 1B.
When using the optical fiber of 64 Kbytes / 1 Mbps = 1/16 (2), each of them is compressed to 1/4 and (352/4) × (240/4) = 88 pixels × It becomes 60 lines (3), and it is possible to transmit up to almost 1/8 of the image frame.

When a 2B optical fiber is used, 64 Kbytes / 1 Mbps = 1/8 (4), so each of them is compressed to a square root of 8 to obtain 124 pixels × 84 lines. .. (5), which enables transmission up to almost 1/6 of the image frame.
Therefore, depending on the transmission path used, the second information signal SB
The image frame of is set.

From the above, the demodulation circuit 22 and the like are the first
Of the decoder 30, A /
The D converter 32, the video memory 34, the D / A converter 36, and the like function as second information signal processing means. Further, the timing signal generation circuit 26 and the like function as a synthesis control means for controlling the synthesis state of the first and second information signals SA2, SB.

FIG. 5 shows another example of the present invention. In this example, an analog image signal reproduced by a video cassette recorder (VCR) is used as the first information signal SA.

When the VCR 50 is used, the identification signal (ID) inserted in the reproduction signal is detected, and this is compared with the ID inserted in the second information signal SB. Is combined. Therefore, the sync signal SYNC is separated from the reproduction signal, and the sync signal SYNC is supplied to the decoder 52 and the sync signal SYNC and the ID included in the sync signal SYNC are decoded and supplied to the microcomputer 54.

On the other hand, the image synthesizing process is performed only when the ID extracted from the digitized second information signal SB supplied to the terminal 14a is supplied to the microcomputer 54 and both IDs match. Reference numeral 56 is a servo control circuit for the VCR 50.

The video output output from the decoder 30, that is, the second information signal SB is supplied to the video memory 34 to write data. The write clock signal and the like are generated by the timing signal generation circuit 58.

The data read from the video memory 34 is converted into an analog signal by the D / A converter 36,
The synthesis with the first information signal SA is the same as in the case of FIG. 1, and the subsequent processing is also the same. The keyboard 20 is connected to the microcomputer 54.

Although the first information signal SA is a terrestrial signal in the above embodiment, it may be a package medium and the second information signal SB is a signal transmitted by an optical fiber. You may use waves.

[0044]

As described above, in the information processing apparatus according to the present invention, the meaningful image content is obtained only after the first and second information signals are combined.

According to this, if the second information signal constitutes the main screen and the first information signal constitutes the auxiliary screen, the information of the entire screen cannot be known only by the auxiliary screen. When the user looks at the auxiliary screen and finds the information valuable, obtaining the main screen information will provide complete information.

Further, for example, instead of providing the first information free of charge, the second information supplied via a transmission line different from the first information can be provided for a fee, so This transmission system becomes particularly effective when satellite broadcasting wave receiving means and optical fiber terminals are installed as terminal devices.

[Brief description of drawings]

FIG. 1 is a system diagram showing an example of an information processing apparatus according to the present invention.

FIG. 2 is a conceptual diagram thereof.

FIG. 3 is a diagram showing an example of an image configuration used for explaining an operation.

FIG. 4 is an operation waveform diagram.

FIG. 5 is a system diagram showing another example of the present invention.

[Explanation of symbols]

 10 information processing device 12 antenna 14 optical fiber terminal 16 signal processing means 18 display device 20 keyboard 38 adder 34 video memory 50 VCR

Claims (4)

[Claims] 1. A first information processing means for processing a first information signal, a second information processing means for processing a second information signal, and a combination for combining the first and second information signals. Means and a synthesis control means for controlling a synthesis state of the first and second information signals, wherein the first and second information signals are respectively predetermined portions of a desired information signal. An information processing apparatus, wherein the information processing apparatus is formed as an invalid portion, and the combination control means is controlled so that the first and second effective portions do not overlap with each other. 2. An analog image signal, an analog audio signal, a digital image signal, a digital audio signal, digital data, computer program data, or computer data is used as the first and second information signals. The information processing apparatus according to claim 1, wherein the information processing apparatus is performed. 3. The information processing apparatus according to claim 1, wherein a terrestrial wave or a package medium is used for the first information signal. 4. The information processing apparatus according to claim 1, wherein a signal transmitted through an optical fiber or a satellite broadcast wave is used as the second information signal.