TW561784B - Data transfer using television video signal - Google Patents

Abstract

Data transfer system of the present invention examines TV video signal for unused bandwidth. Data signals are inserted into TV video signal when unused bandwidth is found. The resulting video signal is still used for TV display without sacrificing video quality. These data transfer methods provide an alternative high-bandwidth data path to Internet. It will satisfy the bandwidth requirement for many applications without any changes to existing system. The system requires little resource to implement. It is the most cost efficient method to solve the bandwidth problem, and the system can be established in a short time.

Description

561784 V. Description of the invention (1) The present invention relates to a method and apparatus for information transmission related to the present invention, especially a transmission method using a television video signal. We can clearly see the revolutionary changes that the Internet has brought to human life. The internet makes it easy for us to access information around the world. It brings us huge business opportunities, revolutionary changes in education, and it will definitely change every aspect of our lifestyle. As the Internet becomes more popular, data transmission bandwidth becomes a major issue. Today, the main medium for personal Internet connections is still the telephone line. 2. The 4KHz bandwidth is sufficient for end-user voice transmission, but it is not designed for large-scale data transmission. The computer mode in device has been upgraded to 5 6 K b ps (kilobits per second), but it is still too slow. At present, many solutions to the bandwidth problem have been proposed. Among them, Integrated Services Digital Network (I S D N), fiber-optic home, and cable home have been implemented in some specific areas. However, those proposed new methods require significant resources and take many years to reach individual user services. Due to the sudden nature of Internet access, these new methods also cause a lot of waste of resources. An individual user wants to get a large bandwidth when accessing the data, but this line is idle most of the time, so fiber-to-the-home is a waste of bandwidth most of the time. Another major fact is that users' bandwidth requirements from bandwidth providers are often very low. A person can only issue a few instructions in one second, and the user only needs the South Bandwidth after requesting a large amount of information from the supplier. So it is a waste to provide the same bandwidth in both directions. Moreover, these new methods do not really solve the bandwidth problems of popular data providers. When thousands of users request a popular web page, even if the vendor has

Page 5 561784 V. Description of the invention (2) After being equipped with optical fibers, they still do not have enough bandwidth to send so much information. The solution provided by the present invention can solve most of the current bandwidth problems. The mechanism is to use the existing television network to transmit data. If all TV channels are added up, the total bandwidth of the TV signal is about one million times higher than that of a telephone line. The television network has covered almost every corner of the world, and it does not require new investment to implement it. Given that television is a one-way broadcast system, we also need a telephone system to transmit low-bandwidth tasks, and a television system to transmit most of the data from the supplier to the user. This combination of television and telephone is capable enough to solve most of the existing problems. The biggest challenge in this scenario is that the bandwidth of almost all television channels has been used to transmit television images. Watching TV is already a major part of modern life, and any change to the existing TV system will face great resistance. Therefore, it is necessary to provide a method and a device for transmitting data at a high bandwidth without affecting the TV viewers. A first look at existing TV signal transmission methods can help us understand this problem. The TV signal contains timing and color information to control the scanning electron beam to hit the TV screen. Figures 1A to 1G show the relationship between the television signal and the television daytime. Each day surface is divided into many horizontal lines. ◦ This screen consists of scanning electron beams line by line. Each line is made up of many pixels (pixe1). The size of each pixel is determined by the resolution of the image. For a color TV, a pixel actually consists of three dots of the three primary colors (red, green, and blue). The intensity and color of the light on each pixel is determined by the intensity and position of the scanning electron beam in the television picture tube.

561784 V. Description of the invention (3) The electron beam is controlled by a television signal. Adjacent lines belong to two different frames (f r ame). First half of the lines are scanned on the screen, then the electron beam returns to the upper left corner and scans the other half of the interlaced lines to produce a moving image at 30 frames per second or 60 frames. Figure 1B shows a schematic of a typical TV signal waveform after demodulation. Within every 1/60, when the scanning electron beam needs to return to the upper left corner of the screen, a vertical synchronization (V s n c) signal 1 1 1 marks the time. The duration of this vertical synchronization signal is called the π vertical blanking period "

between. There is also a 15.75K syncζ horizontal sync Usync signal 113 which is used to decide when the scanning electron beam starts a new scan line. The duration of this horizontal synchronizing signal is called " horizontal blanking period, " (hórizontal bUnk interval) 1 14, which is the time required for the scanning electron beam to move from the far right to the far left of the glory screen to start a new scan line. . In the daytime—video I of one scanning line: Say 疋 is transmitted between horizontal synchronization u. The voltage range of the video signal does not count from 0 · 3 volts to 1 volt. The voltage of 1 #, a ΛΑ ^, m small temple (white level) represents the brightest white, and 0 · 3 volts ($ water half, a: master m & η + π π μ fr · represents full black. The voltage of k number for vertical synchronization and horizontal synchronization is 伕, and u 芈 β η Μ n ^ 丨 疋 volt is called empty level. "Black level and empty water

m ^ η ^ ^ ^ ^ '" Difference is used to avoid misinterpreting the image between the vertical blanking period and the horizontal blanking period. Along: Article :; Second? As a matter of fact, the voltage range 115 of the video signal represents the signal. The light intensity of the color electric 7 drawing. It also contains frequency-modulated (FM) steps. The video presenting at the end of the heart is absent. 4. ^ ^ ^ £ ^ ^ ^ T ^ ^ ^ The number 逖 includes the following three groups of signals:

561784 V. Description of Invention (4)

0. 1 IB 1)

Y = 0. 3R + 0.59G U = 0. 493 (BY) p (2) V = 0. 877 (RY) q (3) where R is the intensity of red light, G is the intensity of green light, and B is the intensity of blue light , Y is called π brightness signal π, which is equivalent to the light intensity adjustment of the color sensitivity of the human eye, U represents the blue difference signal, ρ is a phase factor representing the phase offset and the 4.43MHz carrier frequency offset, and V is the red difference Signal, q is equal to ρ plus 90 degrees of phase shift. These signals were combined in the same bandwidth and were originally designed for black and white television signals. The Y signal defines the contrast of the image, so it occupies a larger bandwidth, while the signals U and V occupy a smaller bandwidth. Figure 1 C shows the spectrum of a television signal channel. The audio signal carrier is on a narrow sideband 6 MHz above the basic carrier frequency (CF). The luminance signal C Y) occupies part of the spectrum between CF and audio sidebands. The color difference signal (U, V) occupies a sideband centered on 4.4 3 MHz above CF. To minimize interference, the peaks of the spectrum of the color difference signal are carefully inserted between the luminance signals. This is possible because the voltage range of the color difference signal (U, V) is usually behind the range of the luminance signal. Color television also uses another time signal 1 1 7 called π color burst π. As shown in Figure 1B, the color burst is located at the trailing edge effect portion between the horizontal sync pulse and the beginning of the video signal. Color TVs are designed for compatibility with black and white TVs. In addition to sound and images, other types of signals take advantage of their off-screen display and are transmitted with TV signals. For example: a special binary code signal is inserted in the time period of the blank vertical blanking period,

561784 Fifth, the invention description (5) to transmit text information displayed. So it is possible. For example, there is only a special solution: the decoding circuit transmits all these preset standard bands automatically by giving gray levels. Hundreds of defined carrier frequency bandwidths can be used to avoid television signals from the above description. It is very useful to use TV signal programs. This invention also includes: Bandwidth to transmit information. Video images near the edge of the TV screen usually do not allow data to be transmitted through those π unused π scan lines. • The TV signal scanning circuit can recognize special signals to replace the compensation. Video, audio, wide (about 8MHz) TV channels to transmit; every interference. The description can clearly be taken up. People for more information. Can cause interference and transmit with high bandwidth. Traces 7-1 8 and 3 2 0-3 2 1 are used to carry other text signals. Another example is the scanning lines 2 2-2 4 and 3 3 4-3 3 6 and the time and special signals are all used in one. The signal is modulated by a high-frequency carrier signal in a parallel manner using carefully defined channels. Occupying a clear definition, the bandwidth of all TV systems has tried all kinds of methods. In the limited electricity, traditional methods are used to insert TV signals in the morning. Therefore, a novel method is urgently needed without affecting the TV viewers The basic purpose is to provide a practical method and device for using television signals without disturbing television viewing. Other objectives In the present invention, an effective method is provided to find available materials; a method is provided to compensate for image distortion caused by the transmission of these materials; and a method is provided to improve the tolerance of noise. Another main object of the present invention is to provide an efficient method to interact with other transmission methods. We use a novel method to overlap the data signal with the TV signal

Page 9 561784 V. Description of the invention (6), without causing perceptible image interference, to achieve the above purpose. Although the novel features of the present invention are specifically set forth in the subsequent applications, the structure and content of the present invention will be better understood with the following detailed description and illustration of other objects and features. The relationship between the television signal and the television image will be described in further detail in order to facilitate understanding of the present invention. Figure 1 D shows the video signal waveform 1 2 1 of a scan line in the TV image (shown in Figure 1 A). At the end of each line, a horizontal sync signal 1 2 5 indicates the end of a line and the electron beam returns to the left side of the screen during the horizontal blanking period. The voltage value of the television signal between this interval is at a blank level (0 volts). When the signal returns from the blank level to the black level (0.3 volts), each line starts to scan. For a color television signal, a color burst consists of several pulses between the blank and black levels. This burst can indicate the time relationship between the color signal (U, V) and the brightness signal (Y). The signal first stops at the black level, and then begins to transmit the video signal on this line between 0.3 and 1 volts. A video signal at 0.3 volts means full black and no light is emitted from the pixel. A video signal at 1 volt means the brightest white on the TV screen. Signals between 0.3 and 1 volt represent different colors and brightness. The area where the video signal changes slowly in the horizontal direction is called the π-horizontal low contrast " area. The area where the video signal changes sharply along the horizontal direction is called 1 horizontal high-contrast π area 1 2 9, as shown by the dashed line in FIG. 1D. After the electron beam scans to the lower right corner, the electron beam returns to the upper left corner of the screen during the vertical blanking period. This action is synchronized by the vertical synchronization signal 1 1 1. Figure 1B is shown in the figure. Vertical sync signal 1 1 1 contains several

561784 V. Description of the invention (7) Different pulses between flat and black levels. Sometimes, these pulses are also used to carry special information such as binary codes to display text. After the vertical synchronization interval, the electron beam starts scanning new lines on a new frame, and these lines are interlaced with the lines in the same frame as the previous frame. Figure 1E shows one of the lines 1 2 2 right next to the line in Figure 1D. These two lines belong to the same image but belong to different towels. In general, the video signals of adjacent lines are very similar; the signals change only where the vertical image changes. The area where the video signal changes slowly along the vertical direction is called the π vertical low contrast area. The area where the video signal changes along the vertical direction is called the " vertical high contrast π area 1 3 9 as shown by the dotted line in Figure 1D. Note that the horizontal high contrast area is not necessarily the vertical high contrast area. Similarly, the horizontal low contrast area may be a vertical high contrast area. After the second frame is scanned, the electron beam starts scanning the next image after the vertical synchronization interval. Figure 1 F shows the same line 1 2 1 as in Figure 1 D, but it is already the scan line of the next image. Generally speaking, the adjacent image signals will not change much; The signal changes only at the position where the picture changes with time. Taking Figure 1A as an example, the signal starts to change only when the baseball player's bat starts to move. The video signal changes slowly with time. The area is called n low-moving contrast π area. The area where the video signal changes drastically over time is called " high-moving contrast π area 1 4 9 as shown by the dashed line in Figure 1 F. Human Eye high contrast region (horizontal, vertical, and mobile) are sensitive in the details of low contrast areas often overlooked. We

561784 V. Description of the invention (8) Use text display as an example to illustrate the importance of high contrast areas. Figure 1 G shows a line 1 2 3 in the video signal of text box 1 0 7 on Figure 1 A. In this example, text characters are displayed in two monochromatic colors: the foreground color and the background color. In the text box 1 0 7, the amplitude of the video signal in Fig. 1 F remains constant until it reaches the edge of the character frame. So the only high contrast areas are the edges of those character frames. For text, once the frame edge of a character is marked as a high contrast area, the character can be correctly identified. Changes to the foreground and background areas will not affect the information we receive. Another major fact is that only two signals are needed to describe a two-color image, which means that we don't need a lot of bandwidth to display simple objects such as text. The text is just an easy-to-understand example. Basically, small changes in low contrast areas will not affect the audience's acceptance of information. From a signal processing perspective, although low-contrast areas do not require the same bandwidth, the bandwidth reserved for each TV channel is always sufficient to describe high-contrast objects. This means that whenever there is a low contrast area in the image, there will be some bandwidth available to transfer other data. The present invention provides a method for replacing video signals with data signals, and the broadcast signals generated by them can be used for television broadcasting and data transmission. A data transmission method of the present invention uses this available bandwidth in the low contrast area to transmit data. This method is called π low contrast area data transmission n (LCDT). Low Contrast Area Data Transmission (LCDT) Low contrast areas are areas where the video signal does not change rapidly. Figure 2A shows an example of a video signal with three contrast zones (201, marked with a dashed line). When a video signal has a high contrast area,

561784 V. Description of the invention (9) The entire spectrum reserved for the channel will be full of video signals, as shown in Figure 1C. When the video signal is in the low contrast area, a small bandwidth is sufficient for video information, because all pixels in that area are almost the same. Figure 2B shows an example of the spectrum of a video signal in a low contrast area. For color signals, there are two narrow peaks in the spectrum, one corresponding to the brightness signal 21 1-one to the color difference signal 2 1 2; most of the bandwidth reserved for this channel is not used. The data transmission method of the present invention retains the original video information. This means that the data signal (1) must remain within the bandwidth of the TV channel, and (2) minimize changes in the video information. Data transmission methods that meet these requirements are described below. The color of a pixel is determined by the light intensities of the three primary colors red, green, and blue (ie, R, G, and B). These three sets of light intensity are converted into a set of amplitude-modulated (AM) video signals C Y, U, V). Once the television receiver detects that the amplitude of the resulting signal is correct, it can use different frequency bands to represent the same video signal (Y, U, V). In other words, the FM signal can be embedded in the video signal without affecting the video signal. Because the frequency modulation results will expand the bandwidth occupied by the video signal, which will cause image distortion, this method is usually not very useful. In a low contrast area, we can use the available bandwidth to carry the FM data signal without problems. Figure 2C shows the spectrum when the video signal in Figure 2B carries an FM signal. The effect of signal frequency modulation is to widen the peaks 2 2 1 and 2 2 2 in the spectrum. As long as the peaks in the spectrum are not wide enough to affect each other, the data signal will not change the video signal in any way. Note that the brightness peak 2 2 1 and the color peak can be carried separately.

561784 V. Description of the Invention (ίο) Different groups of FM signals. This method of using FM to carry data signals will not affect FM audio signals, because audio signals are carried in the CF + 6MHZ band. A variant of the FM format is the multiple frequency modulation (MF) format. Figure 2D shows an example of the spectrum of the MF data. There are four brightness peaks centered on the four frequencies (F0, FI, F2, F3). The data is represented in the television channel by different frequency carriers. For example, the carrier frequency F 0 represents the binary data π 0 0 ", F 1 represents the binary data π 0 1n, F 2 represents the binary data π 1 0 n, and F 3 represents the binary data π 1 1 ". The amplitude of the MF signal can still follow the original video signal. Based on the same principle, color signals can also carry a different set of MF format data. For example, the color signal in the middle of F4 carries the binary code π 0 π, and the color signal in the middle of F 5 carries the binary code π 1 π. Similar to the concept of FM signals, data can also be transmitted by modulating the phase of the data carrier. This method is called phase modulation (PM) data transmission. The data is represented by a phase change in the carrier signal. The multiphase (MP) data format is a variant of the PM data. The data is expressed by the video signal and discrete phase. 〇 The data transmission in the low contrast area (LCDT) has the advantage of maintaining the original video signal amplitude when transmitting in FM, MF, PF, MP and other FM formats. This makes it possible to transmit data in low contrast areas without affecting video information. On the other hand, the human eye is not sensitive to small changes in low contrast areas. So we can insert the AM signal into the low contrast area. Figure 2E shows the video when an AM signal 2 5 3 is inserted into Figure 2A

Page 14 561784 V. Description of the invention (11) An example of a low contrast area 2 51 in the signal. One problem with inserting data into a video signal is that this can cause random background color fluctuations on the TV screen. Although TV viewers can still fully recognize the original image, this background color fluctuation is still annoying. The present invention provides a solution to this problem. One method is to transmit data in a compensated format (CF). Since the data on each pixel is modulated, we perform the opposite modulation on its neighboring pixels to compensate. Because the human eye automatically takes an average image of fine objects, the resulting image will be very close to the original image. There are three ways to transfer data in CF format. The first is to place AM data in opposite amplitudes on an adjacent scan line. When CF data appears on an adjacent line, it is called π vertical compensation " (VC). The prerequisite for VC is that both lines must have a vertical low contrast area. The same method can also be implemented on adjacent images. When the compensation data is carried by the same scanning line on different day and day, this method is called π time compensation (TC). The premise of TC is that both lines must have low moving contrast areas. Figure 2F shows that one scan line in the video signal carries the VC or TC data signal 2 5 4 to compensate the AM data 2 5 3 in Figure 2E. The third CF method is to use the adjacent pixels to carry compensation data in the same scan line. This format is called "Horizontal Compensation" (HC). Figure 2G shows an example of HC data. Of course, we can also use these three methods (VC, TC, HC) to represent data. Remember that every point on the screen is actually three colors (red, green, blue). The compensation format data 2 5 3 to 2 5 in Figs. 2A to 2G are only simplified data for easy analysis. In fact, there are three degrees of freedom in representing and compensating the modulation data. Data compensation can be implemented on one or more color sections. video

561784 V. Description of the invention (12) The amplitude of the signal does not necessarily have a linear proportional relationship with the amplitude of the optical signal. Therefore, a correct compensation must also take into account a 1 p h a correction. These compensation techniques (V C, T C, H C) can not only improve the picture quality, but also improve the noise tolerance. When the data is carried in a compensation format, the data is determined by changes in neighboring points. Since most of the noise has the same effect on neighboring points, the resulting data signal has a much better signal-to-noise ratio. The improvement of the signal-to-noise ratio allows us to carry more data at each point. Therefore, for data carrying capacity, the format of compensation data is not necessarily worse than that of non-compensation data. With the compensation format, at least two pixels are required to carry each data point. If you do not want to use multiple pixels when carrying a data point, you can use the differential format (DF) to solve this problem. Figure 2H shows an example of a data signal in the differential (DA) format. Binary data π Γ is represented by moving up or down in amplitude, while data π Ο π is represented by unchanged. If there is a parity bit in every '8 data bits, then the average amplitude per 9 bits can be made 0. So the fluctuations in the original signal can be greatly smoothed and ignored. Similarly, the difference format can also be used to carry data signals with FM, MF, PM or MP format. Of course, if higher data transmission speed is required, it is naturally possible to use multiple data formats such as F M, MF, PM, MP, AM, CA, DA and so on. Figure 3A shows a schematic diagram of a hardware system performing a low contrast area data transfer (LCDT) process. A video signal analyzer (VSA) detects the output video signal (OVS) to find available bandwidth. This video signal analyzer can detect the rate of change in the output video signal. Once probed

561784 V. Description of the invention (13) When the low contrast area is detected, the VSA passes the signal to the signal processor. At the same time, the signal source also transmits data to the signal processor. This signal processor inserts the output data signal (ODS) into the output video signal (OVS) and forms a broadcast video signal (BVS). BVS is broadcast through a television system. TV users and tribute users are both receiving and processing broadcast video signals. The data transmission method of the invention ensures the quality of the video signal. The TV receiver processes broadcast video signals together, and the accompanying data signals do not affect the high-quality picture broadcast. The data receiver has a data signal analyzer (DSA) and a data decoder. The data signal analyzer sends a signal to the data decoder once the data signal is found in the broadcast video signal detection process. The data decoder filters out the data signals in it, and then releases them into the correct data to pass to the data users. For example, after processing the video signal shown in Figure 3B, the output produced by a low contrast area data transfer (LCDT) video signal analyzer will look like that in Figure 3C. Once the signal in Figure 3B undergoes a change below the preset value, the output of the horizontal detector is a binary '1', otherwise it is '0', as shown in Figure 3C. In the example shown in FIG. 3B, the video signal therein has three low-contrast areas 3 1 1 to 3 1 3. At the same time, these areas allow time-controlled signals, such as vertical synchronization, horizontal synchronization, and color bursts, to automatically meet the requirements for a low contrast area. Therefore, the signal shown in Fig. 3C also becomes high during the horizontal blanking period. When the output video signal is in the low contrast area for a long enough time to carry the data signal, the data signal is inserted to form a broadcast video signal, as shown in Figure 3D. The data can be in a variety of formats in the present invention (FM, PM, MF, MP,

Page 17 561784

5. Description of the invention (14) DA. A, CP), or the vertical area data signal analyzer s a is used together for transmission. Low right. Once the low slope is found, the ability to detect low contrast areas

In the low-contrast area, be careful about the material signal, v. Jiangxi #%, the Beiji angle noon code device will look for coincident information. Erya will release the angle noon tone. The data transmission rate of k is. The use of special types of TV = ί ΐ largely depends on the video signal, when low ff Γ + + TV 彳 5 唬 can reach a higher rate. For example. Ben # In ..., thousands of inches of water, the transmission rate can reach a particularly high level 2 dagger A black horizontal data transfer wheel (BLDT), which uses black, the P light ratio area to achieve a special data transmission rate. This is similar,

Low ^ white level data transmission; it takes advantage of higher data transmission rates in the white level τ zone. Moreover, the present invention also includes a method of space-level data transmission (LDT) carrying a data signal in a two-level low-contrast area. Fig. 3D shows an example of the state when BLDT 331, Wlin 32 & LCDT 3 3 3, KLDT 3 34 are used for video signals as in Fig. 3β. These data transmission methods M L D T ′ W L D T ′ K L D T) will be described in more detail below. Black Level Data Transfer (BLDT)

Video signals with levels representing black are most frequently transmitted to television receivers. Black is often displayed on TV screens. Moreover, the voltage of the signal is applied to the time-controlled (vertical synchronization, horizontal synchronization, and color burst) signals with an upper limit. Optically speaking, black means no light. When the video number is black, the corresponding picture element (pixel) on the TV screen should be all black. Optically, no color is darker than black. For TV signals, the black level is determined by a

Page 18 561784 V. Description of the invention (15) It is expressed by amplitude modulation (AM) signal. The black level is set at 30% of the full amplitude, because we need to have a sufficient margin space to define the π space level π for the time-controlled signal. Ideally, a video signal should never have a value between black and empty levels, because no color is darker than black, although it is not a time-controlled signal. In reality, immediately after the receiver circuit detects a video signal that is lower than the black level, the signal is processed into black. In reality, a point on the TV screen cannot be completely black; even when the screen itself does not emit light at all, the TV screen reflects light due to nearby light sources. Therefore, in a practical situation, a video signal slightly higher than the black level is also processed as black. Therefore, the concept of π black π is not strictly defined as representing only one signal level. For the quality of the TV's day and night, a TV signal between the lower and upper black levels will represent the same signal. So it is very convenient to carry it with the TV signal and data signal representing the black dot. The only limitation is the coincident signal of memory in the black level range. The other thing to note is that the black level range is not fixed. In an area next to a time-controlled signal, the black level must be accurate; in other areas, the range of black levels can be very wide. The exact value of the black level range also depends on the circuit design of the television receiver. Another major factor is that black is not treated as a color signal. From a mathematical point of view, a black signal means R = G = Β = Y = U = V = 0. Therefore, as long as the amplitude of the resulting signal falls between the high and low limits of the black level, it is completely free to represent black with different carrier signals.

561784 V. Description of the invention (16) _ k ΐ I supports BLDT, VSA and dsa need a level detector. This device = frequency signal, once the video signal is found in the black water _ ^: = 2 free a control signal. Take the video in Figure 4A. ^ = i Μ ^ #The analyzer output will be as shown in Figure 4B

It. .T ,, Μ: / Λι \, t f ^ ^ " J 11 ^ Time is sufficient to carry the data signal Risi, and the data signal out. This amplitude modulation; ㈣ ^ shown in the figure requires a signal-to-noise ratio for Shirei and eyepieces. The perimeter is only a part of the range of the king. The method θ 1 ^ 7 5 is much smaller. The one who solves this noise problem can change the phase and frequency and trt has color tribute, and the frequency of the video i, but not the video quality of the broadcast. Use ^ to keep the black level signal at 0.3 volts

, Or ΪρΪ: as described in the chapter of ί… W, M, MF, PM 0 m. Carrying and bandwidth data signals. Because the amplitude of the data signal: on paper, you can achieve a very good signal-to-bee ratio. Let ’s change to the use of narrow-end bands in the TV channel to carry amplitude-modulated signals with a black signal transmission (Dm noise tolerance of the ship. One: consider most of the noise at other frequencies, a compensation? ^ 1 ^ ^^ can also be due to / ^ 811) D. Of course, in the present invention, 1 ^ can be used in combination with two or more data transmission formats up to :: fCP! To achieve a more southern data transmission rate. Rule-level lean material transmission (WLDT) 561784 V. Description of the invention (17) The concept of π white π in television displays is different from white in nature. In optical terms, white means a color with a balanced color component (R = G = B). White light in nature does not have Limits on optical density. For TV displays, there is a physical limit on the optical density emitted from the screen. Therefore, the TV signal has its upper limit in amplitude. The concept of white in TV displays is a bright spot reaching the screen Maximum brightness and balanced color components (Y = R = G = B = 1). Note that just R = G = B is not enough to define the M white π in the TV display, because if the Y value does not reach the maximum When the light is π gray ". From the point of view of electronic signals, "π white" is a signal with a white level, that is, it has a full amplitude of 100%. In reality, the white level also has an upper and lower limit. It lies between the upper and lower limits of the white level. (White level range) TV signal will not appear on the TV as " white π. As long as the signal is within the white level range, the audience cannot distinguish these white differences. Because π white level " We can use it to transmit data similarly to black level data transmission. However, there is one major difference between WLDT and BLDT. For WLDT, if we change the threshold value without changing the color difference signals U and V, Then the color will change. The color difference signals U and V occupy a sideband centered at 4.4 3 MHz above CF. Due to the need for balanced color, the degree of freedom in selecting a frequency sideband for WLDT is reduced On the other hand, the WLDT signal is in full amplitude, so its noise tolerance is better than BLDT. To support WLDT, VSA and DSA need a level sensor. This A horizontal sensor detects the video signal. Once the video signal falls within the white level range, the sensor sends out a control signal. Using the video signal in Figure 5A

Page 21 561784 V. Invention description No. U8) As an example, the output of the WLDT signal analyzer will be as shown in Figure 5B. Where the signal in Figure 5 A is within the white level range, the output of the sensor will be binary " 1 π, otherwise it is π Ο π, as shown in Figure 5 B. When the video signal is at the white level for a sufficient time to carry the data signal, the data signal is inserted into the video signal to form a video output signal as shown in Figure 5C. As we described in the previous chapters, the data can be transmitted in any format or any combination of FM, PM, MF, DA, CA, or CP. Unlike BLDT, for WLDT, the choice of phase and frequency of the carrier signal needs to take color into consideration. Blank horizontal data transmission (KLDT) Blank horizontal is used for time-controlled signals such as horizontal synchronization, vertical synchronization, and color burst. The magnitude of the null level should be 0. In practice, timing circuits are most sensitive to rising and falling edges of time-controlled signals. Beyond that, timing circuits can tolerate signals with amplitudes less than the empty level limit. Therefore, we can insert data signals to replace those empty-level signals, as long as we ensure that the inserted signals are below the empty-level limit. To support KLDT, VSA and DSA need a level sensor. This level sensor detects the video signal, and once the video signal falls below the empty horizontal limit, the sensor sends out a control signal. Taking the video signal in Figure 6A as an example, the output of the KLDT signal analyzer will be as shown in Figure 6B. Where the signal in Figure 6 A is below the empty level limit, the output of the sensor will be binary π 1π, otherwise π Ο π, as shown in Figure 6 B. When the video signal is at the level of the space level for a sufficient time to carry the data signal, the data signal is inserted into the original video signal, constituting a picture as shown in Figure 6C.

561784 Fifth, the video output signal shown in invention description (19). As we have described in the previous chapters, the data can be transmitted in any of FM, PM, MF, DA, CA or CP formats or any combination. Similar to BLDT, because the empty level has no color, we have all the degrees of freedom to choose the phase and frequency of the carrier signal. The above chapters include methods for transmitting data using low contrast areas (LCDT, BLDT, WLDT, KLDT). These methods provide bandwidth for data transmission when the video signal is in a low contrast area. So the average transmission rate depends on the situation of the TV image. In many applications, people need a stable data transmission rate. Therefore, the present invention provides a data transmission method that is not related to television images, as described below. Color Table Data Transfer (CTDT) The color table is generally used as a method in computer displays to reduce the size of image files. A color table defines a limited number of colors (16, 6, 4, or 2 5 6). The color of each pixel in the image is represented by the closest color in the color table to the original color. In most cases, a 256-color color table can fully display high-quality images, especially when the content of the color table can be changed for different images. The definition of colors in the color table is not fixed. We can replace each item in the color table with their similar values to construct another color table. This new color table can still be used to display high-quality images. The present invention utilizes this feature for color table data transmission. To support CTDT, both the data provider and the data receiver need to have at least two preset color tables that are accepted in common. For example, T 0 and T 1, T 0 represents the first color table and T 1 represents the second color table. These color tables can change, but they must be consistent on both sides. Figure 7A shows a CTDT flowchart

Page 23 561784 V. Description of Invention (20). A video signal analyzer (VS A) determines the color for each pixel in the original video signal (OVS). To transmit a binary number " 0, the color in the pixel is replaced by the closest color in the table T 0; to transmit a binary number π 1 π, the color in the pixel is the closest to the table T 1 The result image (BVS) is broadcasted through the television network. Since the tables T0 and T1 can be used to produce high-quality images, the resulting image after mixing is still very day-to-day for TV viewers High. A data receiver uses a data signal analyzer (DSA) to detect and change the video signal. When the color of the pixel is in the table T0, it receives a binary number π 0 π. When the color of the pixel is in the table T 1 When you receive the binary number "1π. An advantage of CTDT is that binary data can exist in every pixel in the video signal. It is also unnecessary to consider the interference of the video signal on the image quality and color due to the insertion of the data signal. So it is not necessary to determine the low contrast area first. CTDT can be flexibly applied to different parts of the display signal without necessarily acting on the entire screen. In general, to simplify the support circuit, using a part of the screen and a small color table (such as 16 or 64 colors) to transfer data can achieve good results. Preset Object Data Transfer (P0DT) Preset Object (P0) is an object known to both the sender and receiver of the data. Examples of preset objects are: logo, score board, and subtitles, as shown in Figure 1A. The preset objects are usually simple patterns with simple color matching, so the multiple methods (LCDT, BLDT, WLDT, CTDT) in the present invention can be used to achieve high-speed transmission. Since we know the exact color of each pixel, further transmission methods are also available. For example, presets

561784 V. Description of the Invention (21) An area in the file can be designated to be filled with any video signal. Thus, there will be no restrictions on the format of the signal in this area. The highest bandwidth can be achieved in such areas. Both the sender and receiver of the data should have a library of default objects. For each object in the library, the original color and data transmission method on each pixel have been determined. To start a PODT, the data sender first informs the data user when, where, and which preset object will be used. Figure 7B shows a flow chart for inserting data into pixels of a preset object using PODT. Small Object Data Transmission (SODT) The human eye is insensitive to small objects in a large picture. If we select a few pixels on the screen to transmit data, as long as the selected area is small enough, the data will not have any noticeable effect on the screen. These small objects can be placed in fixed positions on the screen, and these small objects can also be moved. As long as the sender and receiver know which pixels are used to carry the data, even these objects can be placed in random locations. We have full freedom to use any combination of data formats in the present invention. Any combination of data formats can be applied to SODT. As shown in Figure 7B, the data transmission process of SODT is the same as that of PODT. Invisible frame data transmission (IFDT) Not all video signals are displayed on the TV screen. The first and last lines of each frame are not displayed. These scan lines and pixels outside the TV screen are called "invisible frames π 108. As long as 1) the spectrum of the data signal is within the bandwidth of the TV channel, and 2) the amplitude of the data signal is within the range of the traditional video signal Within, and 3) timing signals (horizontal synchronization, vertical synchronization

561784 V. Description of the invention (22), color burst) is correctly retained, and we can replace the video signal with the data signal in the invisible frame. A method for transmitting data using invisible frames in the present invention is called π invisible frame data transmission π (IFDT). Since the video signal in the invisible frame is not used for TV display at all, the data transmission format of the I FDT has the highest degree of freedom. It is important to remember that there were previously methods for carrying text using partially invisible frames. In these previous methods, text signals always used empty and black levels. One way to maintain compatibility is to use B L D T and K L D T when the signal is found at a black or empty level in an invisible frame. For other levels, we have full freedom to use any combination of data formats in the present invention. To support IFDT, the video signal analyzer (VSA) and digital signal analyzer (DS A) need a timing circuit. This timing circuit uses video timing signals (horizontal sync and vertical sync) and a built-in timer to determine if the signal is within an invisible frame. When the video signal is found in an invisible frame, the data signal is inserted into the original video signal. As we have described in the previous sections, the data can be transmitted in any format or any combination of the invention. Figure 7C shows a flowchart of an example IFDT process. Proprietary Object Data Transmission (DODT) Although the data transmission method of the present invention can transmit data through a television signal without degrading the picture quality, it is unethical to change the video signal without notifying the television user. Honesty is the best service policy. Once we use the video signal to transmit materials, we must inform the TV viewers. One method is to display a special mark 1 0 1 on the corner of the screen, as shown in Figure 1A. At this

561784 V. Description of the invention (23) In the example, we used the letter "DTn" to tell the TV viewers to perform the data transmission. In case the data transmission really caused the nasty effect, the viewer can provide feedback to the data supplier so that they can improve the data. Transmission method. Of course, this DT mark 1 01 can also be used to transmit data. The simplest method of data transmission is to open a small area on the screen for data transmission. This method is called DODT ). The DODT data transmission process is consistent with the PODT, as shown in the flowchart in Figure 7B. The present invention provides an effective method to use the television network as a parallel channel for Internet communication. The data transmission method of the present invention is used in combination BLDT, WLDT, KLDT, VSDT, CTDT, PODT, SODT, IFDT, DODT), more than 90% of the TV bandwidth can be used for data transmission. The bandwidth of each pixel on the TV screen is approximately equivalent to 6 telephone lines .If all available TV channels are fully utilized, each user in the world can reach more than one gigabit per second (G bps ). Although the data transmission methods in this invention have been illustrated and described here, method modifications and changes may occur to those skilled in technology and skills. It should be understood that the above examples are only for the purpose of The purpose of the demonstration is not to limit the present invention to this. The data transmission system of the present invention does not replace the existing communication system, but rather, it provides another data transmission path outside the existing system. Figure 8A An overview diagram of the communication system of the present invention is shown. Information users 801 and information providers 803 are connected by the Internet. Currently, the backbone of the Internet is built on the telephone system and computer network system. At the same time 'The TV hall broadcasts video signals to TV viewers. Currently, between the Internet and TV networks

561784 Fifth, invention description (24) ~ ---- The choice should be related. Information users 801 send requests, instructions, options, and simple emails via the Internet. Usually these activities do not need more than 9 bandwidth & telephone lines to be able to deal with them more than enough. Currently, Shang also uses the Internet for data transmission. The bottleneck occurs when one / one of the popular websites sends a large amount of data to users, and the demand for bandwidth is X. § One provides another source of information on this. The information provider can send data with the decoder of the invention x =. This information can be found in the video signal analyzer (VSA) and a video signal processor 7-a signal analyzer in the output video signal (ovs). Video bandwidth. The output of the VSA is transmitted to the state to determine if it is available ^^ times. The signal processor (VSP) uses the output data as a transmission method to generate video signals (0VS), which forms the broadcast video (0DS), and inserts them into the TV system for broadcasting, and then passes the TV receiver (BVS). BVS through 801 processing. The data transmission method and the data user of the present invention are both so that the television viewer can still pass the quality j picture of the current frequency signal. The data receiver has a second letter, and the signal received high quality = material decoder 8 0 7. DSA detection changes depending on the "Detecter (DSA)" and a ":", and sends it to the data decoder; as soon as it finds control information such as the type and decoder key found in it. As part of ^, σ ^, there are 807 information rounds provided by information providers. The data decoder =: scheme provides much higher than the telephone network; the data transmission instead of k upgrades the entire system, The performance of the system. 帛 8B graph display =. Thus in the system layer of Fig. 8 A greatly

561784 V. Description of the invention (25) times structure. Most of them have the same hierarchical structure and communication protocols as existing communication systems. Because there is no change in the application layer, presentation layer, session layer, and transport layer. Therefore, the communication system based on the present invention can use most of existing software and hardware. The present invention provides a parallel path approach on lower layers. The system in Figure 8 A can have a wide range of applications. We will use the video game rental system as an example to illustrate the operation principle of the communication system of the present invention. Figure 9A shows a block diagram of a video game controller of the present invention. This video game controller is equipped with a TV signal interface 901 for receiving TV signals. Typical examples of such TV signal interfaces are connected to a TV antenna or a cable box. The data signal received from the interface 9 0 1 is sent to the data decoder 9 0 3. The data decoder is used to extract the data signal from the TV signal. This video game controller is also connected to an internet interface. A typical example of an Internet interface is a computer with a modem. This Internet interface can also be placed inside the game controller. Both the Internet interface 905 and the data decoder 903 are connected to a storage unit 907 and a video game control unit 909. The storage unit 907 is a storage device for storing data. Typical examples are hard drives and tapes. The video game controller 9 0 9 has a programmable firmware (f i r m w a r e) to reconfigure different games, except that it is the same as the video game controller currently in use. The player can program the controller firmware to play different games. For a system without a TV interface 9 0 1, the player must find a video game provider on the Internet and download the entire game

Page 29 561784 V. Description of the invention (26) This game can only be played in the game controller 9 0 9. If one million players want this game, the same download process will be repeated one million times. It is likely that this website is blocked by a large number of download requests. Even if the website has enough bandwidth to handle these requests, it is a huge waste of resources. When the system is equipped with a TV interface 901, the process of obtaining a new game becomes extremely efficient. The player uses the Internet interface 9 0 5 to select a new game. The game provider passes a "decoding key π" to the player, and this "decoding key" instructs the data decoder 9 0 3 when and how to download the data from the TV interface 9 0 1. A large amount of data such as videos and images in web pages and game programs are transmitted from the television interface using the data transmission and distribution in the present invention. The Internet interface 905 only handles slow actions such as selecting games and transmitting decoding keys. The same decoding key can be used by multiple users, so when many users request the same data at the same time, the supplier only needs to send a copy through the TV interface. The data transmission immediately after receiving the request is called π real-time data transmission π. One problem with real-time data transfer is that players do not usually make requests for data at the same time. If the supplier receives the request and sends the information from scratch, the same information needs to be sent many times. One way to solve this problem is to delay the sending of data, accumulate many requests first, and then send a copy that satisfies all requests. This method is called delayed data transmission. Another solution is to divide a large file into several smaller packages. The player does not need to receive a large file from the beginning, small packets can be received out of order. When all packets have been received, the final file can be created. Use packet transmission

Page 30 561784 V. Description of the invention It is useful for the information to be input as long as it is passed to the collaborator and sent to the satisfaction arrangement in advance. data. In the new case, the user of the supplier should pay 907 yuan. It will first check that the vendor only needs to send the transmission. Thousands of people share the same process, and each person can watch thousands of games based on traditional TV data. (27) Game providers simply simply continue to send requests for this game. All requests request the same key. Once all packets receive a signal, the end of the request is notified. After that, the supplier stops the sending process. Data transfer. For this method, all users who want a new game will receive the game data, and the merchant only needs to transmit a copy at a predetermined time. In addition, the game user sends data to those who have requested it beforehand. The data sent in advance guarantees the storage unit when the game user really sends the request. If the data is already stored, send a key to start the game. Only when the requested game is not in the storage unit, the game data is given to the user. Figure 9B shows the graph. The data transmission method of the present invention often plays the same game. To support such a high-frequency game system, it is necessary to save the game's Internet sending instructions, and the central system transmits a method to update the game result. All the new players participating in the TV can play a game without knowing it. Another practical application is the stock market. The package of this game. Once the game user has received it, he will ask one for all users to request one. The solution is to introduce a key when accessing the new game and pass it to the user. This method is: the supply may issue a request to store the data in the game control software unit, and supply, without having to make a resource, the game supply. The above communication is too efficient and can accommodate a game map of scale. The player broadcasts the map at a time through the signal in the present invention. In this way, it becomes a blocking system. Real-time data update

Page 31 561784 V. Description of the Invention (28) System. Fig. 10 shows an example of the present invention in the stock market real-time data updating system. This system is completely the same as the existing real-time stock market data system except that it has a TV signal interface 9 9 1 to obtain data from the TV signal. This system is still connected to the Internet. The user still sends the request over the Internet. The software used to display stock market information is also the same as existing software. The only difference is that with the television signal data transmission method of the present invention, there is a parallel data channel between the stock information provider and the user. In the previous system, the latest stock quotes were transmitted to millions of shareholders via the Internet. This means that millions of identical materials are sent to different users. Using the television data transmission method of the present invention, the stock market information provider only needs to send a copy of the latest stock information. Updates to the latest stock price require only a few thousand bits per second. Any of the data transmission methods in the present invention can easily meet this bandwidth requirement, and all users can obtain real-time stock market information with minimal delay. Note that this system does not necessarily require a computer. A video game controller as shown in Figure 9A can be programmed to handle stock update information. The data transmission method of the present invention utilizes a television broadcasting system to transmit data. It can meet the bandwidth requirements of many applications without any modification to existing systems. This system also has very low resource requirements for implementation. It is the most economical solution to the bandwidth problem and can be established in a short time. The biggest limitation of these data transmission methods is that they are all one-way broadcast systems. The transmission channel may be disturbed by noise. Therefore, it is necessary to perform data quality control, such as parity check, checksum, error correction code,

561784 V. Description of the invention (29) H e m m i n g code, etc. These methods are known for ensuring the quality of data transmission in noisy environments. There is no need to elaborate on them here. Another major issue is security. For materials with high security requirements, security measures should be taken for broadcast materials. Although the present invention has been described in terms of its best application, it should be understood that the methods included in the invention are not limited to this application. Those skilled in the art will undoubtedly change and modify it after reading the above description. With that in mind, the appended claims are intended to cover all changes and modifications which make use of the spirit of the invention and are within the scope of the invention. Brief description of drawing number: 1 0 1 special mark 1 0 8 invisible frame 1 1 3 horizontal synchronization signal 1 1 4 horizontal blanking period 1 1 5 voltage range 1 1 7 time signal 2 2 scan line 23 scan line 2 4 scan line 3 3 4 Scan line 3 3 5 Scan line 3 3 6 Know * Trace 1 2 1 Video signal waveform 1 2 5 Horizontal sync signal

561784 V. Description of the invention (30) 1 2 9 Horizontal South Contrast Area 1 11 Vertical Sync Signal 121 Line 122 Line 139 Vertical Still Contrast Area 1 4 9 High Mobile Contrast Area 1 0 7 Text Box 123 Line 2 0 1 Contrast Area 2 1 1 Brightness signal 2 1 2 Color difference signal 2 2 1 Peak 2 2 2 Peak 2 5 1 Low contrast area 2 5 3 AM signal 2 5 4 TC data signal 2 5 5 Compensation format data 3 1 1 Low contrast area 3 1 2 Low Contrast area 3 1 3 Low contrast area

331 BLDT

332 WLDT

333 LCDT

334 KLDT

561784 V. Description of the invention (31) 8 0 1 Information user 8 0 3 Information provider 8 0 7 Data decoder 90 1 Interface 9 0 3 Data decoder 9 0 5 Internet interface 9 0 7 Storage unit 9 0 9 Video game control Unit 9 9 1 TV signal interface

561784 Schematic illustrations 1A to 1G: shows the relationship between the current TV signal and TV display Figure 2A: shows an example of a TV video signal in a low contrast area; Figure 2B: display An example of the spectrum in the low-contrast area is shown in Figure 2C. Figure 2C shows the spectrum after a frequency-modulated data signal has been inserted into Figure 2B in the low-contrast area. Figure 2D: When multiple Spectrum after FM data signal has been inserted into Figure 2B of the low contrast area; Figure 2E: shows an example when the amplitude modulated data signal is inserted into a low contrast area Figure 2A; Figure 2F: Display Shows an example when the compensated AM data signal is inserted into the adjacent line in Figure 2E; Figure 2G: shows an example when the compensated AM data signal is inserted into a low contrast area, Figure 2A ; Figure 2 (a) is a differential signal data; Figure 3 (A) is a block diagram of a low contrast area data transmission system in the present invention, Figures 3B to 3D: the video signal in Figure 3A Example; Figure 4A Figure 4C: Examples of video signals in the black level data transmission method of the present invention; Figures 5 A to 5C: Examples of video signals in the white level data transmission method of the present invention; Figures 6 A to 1 Figure 6C: an example of a video signal in the hollow horizontal data transmission method of the present invention;

561784 Schematic illustrations Figures 7A to 7C are flowcharts of the color table data transmission μ μ, respectively. Pre-ri-n. The process of standard data transmission and invisible frame data transmission. Figure 8A • is a communication in the invention Level diagram of the system 9 Figure 8B • is a hierarchical block diagram of the communication system of the present invention Figure 9A • is a block diagram of a video game controller in the present invention Figure 9B: Flow chart of the communication process of the controller and FIG. 10 depicts an instant stock price update system utilizing the present invention.

Page 37

Claims (1)

561784 92. 8. 22 _ Case No. 91101222 _ year and month amended _ 6, the scope of patent application 1 · A method for transmitting data using television video signals, including steps: (a) detecting that television video signals are composed of electromagnetic waves transmitted one after another TV video signal 'to find a time period with a suitable electromagnetic wave transmission rate; (b) In the TV signal, a time signal suitable for the electromagnetic wave transient rate is inserted into a data signal invisible to the viewer to generate a bearing data And (c) transmitting the data-bearing television signal to a television and data receiver. 2 · The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes: A step of inserting a frequency-modulated (FM) data signal into a time period of an electromagnetic wave transient rate. 3. The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes The step of inserting a multi-frequency (MF) data signal into the time period of the electromagnetic wave transient rate. 4 · The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes The step of inserting a phase modulation (PM) data signal into the time period of the electromagnetic wave transient rate. Page 38 561784 _Case No. 91101222_Year Month Date _ «_ VI. Application for Patent Scope 5 · The method for transmitting data as described in Item 1 of the Patent Application Scope, where in step (b), a viewer is not allowed to insert a television signal The process of generating a television signal from an existing data signal includes the step of inserting a polyphase modulation (MP) data signal into a time period suitable for the transient rate of electromagnetic waves. 6 · The method of transmitting data as described in item 1 of the scope of patent application, wherein In step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes inserting a CF with a compensation format (CF) in a time period suitable for the transient rate of electromagnetic waves. Steps of modulating a data signal. 7 · The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes A step of inserting a compensation amplitude (CA) modulated data signal into the time period of the electromagnetic wave transient rate. 8 · The data transmission method described in item 1 of the scope of patent application, wherein In step (b), the process of generating a television signal by inserting an invisible data signal into the television signal includes inserting a differential (DA) modulated data signal in a time period suitable for the transient rate of electromagnetic waves. A step of. 9 · The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes a time period A step of inserting this data for black level data transfer (BLDT) Page 39 92. 8. Amended 561784 _ case number 91101222 on the 22nd of June 6. Scope of patent application. I 0 · The method for transmitting data as described in item 9 of the scope of patent application, wherein the step of inserting _ the data into a black level data transmission (BLDT) in one of the time periods includes an insertion in the time period using the BLDT ^ A step of frequency modulation (FM) data signal. II. The method for transmitting data as described in item 9 of the scope of the patent application, wherein the step of inserting one of the data for a black level data transmission (BLDT) in one of the time periods includes inserting a multiple in the utilization of the BLD1 ^ time period. Steps for frequency modulation (MF) data signals. 1 2 · The method for transmitting data as described in item 9 of the scope of patent application, wherein the step of inserting one of the data for black level data transmission (BLDT) in one of the time periods includes inserting / A phase modulation (PF) data signal step. 1 3 · The method for transmitting data as described in item 9 of the scope of the patent application, wherein the step of inserting one of the data for a black level data transmission (BLDT) in one of the time periods includes inserting one in the time period of using BLDT Steps for polyphase modulation (MP) data signals. 1 4 · The method for transmitting data as described in item 9 of the scope of the patent application, wherein the step of inserting one of the data into a black period data transmission (BLDT) in one of the time periods includes inserting one in the time period using the BLDT The step of modulating the negative data signal with a compensation format (CF). 1 5 · The method for transmitting data as described in item 9 of the scope of the patent application, wherein the step of inserting one of the data in the time period for the black level data transfer wheel (BLDT) includes a time period in which the BLDT is used insert 561784 92. 8. 22 _ Case No. 91101222 _ month and month Amendment _ 6. Application for patent scope A compensation amplitude (C A) modulation data signal step. 16 · The method for transmitting data as described in item 9 of the scope of the patent application, wherein the step of inserting the data in a black time data transmission (BLDT) in one of the time periods includes inserting one in the time period using the BLDT The step of DA modulation of a data signal. 17 • The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal is included in a suitable application. A step of inserting a differential amplitude (DA) modulation data signal in the time period of the electromagnetic wave transient rate. 18 · The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used Steps for inserting an FM data signal. 19 · The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used Steps to insert a multi-frequency (MF) data signal. 2 0. The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used The step of inserting a phase-modulated (PF) data signal. 2 1 · The data transmission method described in item 17 of the scope of patent application, wherein the data signal is inserted during the time period using white level data transmission ( Page 41 92. 8. ?? 561784 _ case number 91101222_ year month day __ VI. Patent application step (WLDT) step, including inserting a multi-phase modulation (MP) data in a time period where WLDT is used Signal steps. 2 2 · The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used The step of inserting a data signal with a compensation format (CF). 2 3 · The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used A step of inserting a data signal with a compensation amplitude (CA). 2 4 · The method for transmitting data as described in item 17 of the scope of patent application, wherein the step of using white level data transmission (WLDT) for inserting the data signal in the time period is included in a time period in which WLDT is used The step of inserting a differential (DA) modulated data signal. 2 5 · The method for transmitting data as described in item 1 of the scope of patent application, wherein in step (b), the process of generating a television signal by inserting a data signal invisible to the viewer into the television signal includes the use of a The step of inserting a modulated data signal into the time period of the KLDT. 2 6 · The method of transmitting data as described in item 25 of the scope of the patent application, wherein the step of inserting the data signal during the time period using the empty level data transmission (KLDT) includes a time when the KLDT is used here A step is inserted in the segment to transmit an FM data signal. 2 7 · The data transmission method described in item 25 of the scope of patent application, wherein Page 42 561784 9m 2 Case No. 91101222 _ year month day __ VI. Scope of patent application The step of inserting the data signal during this time period using the empty level data transmission (KLDT) includes a time when the KLDT is used here A step is inserted in the segment to transmit a multi-frequency (MF) data signal. 2 8 · The method for transmitting data as described in item 25 of the scope of patent application, wherein the step of inserting the data signal during the time period using the empty level data transmission (KLDT) includes a time when the KLDT is used here The step of inserting a phase-modulated (PF) data signal into a segment. 2 9 · The method for transmitting data as described in item 25 of the scope of patent application, wherein the step of inserting the data signal during the time period using the empty level data transmission (KLDT) includes a time when the KLDT is used here The step of inserting a polyphase modulated (MP) data signal into a segment. 30. The method for transmitting data as described in item 25 of the scope of the patent application, wherein the step of inserting the data signal during the time period using the null level data transmission (KLDT) includes a time when the KLDT is used here Step of inserting a modulated data signal with a compensation format (CF) in the segment 〇3 1 · The data transmission method as described in item 25 of the patent application scope, wherein the utilization level of the data signal is inserted during the time period The step of data transmission (KLDT) includes the step of inserting a compensation amplitude (CA) modulated data signal in a time period in which KLDT is used. 3 2 · The method for transmitting data as described in item 25 of the scope of the patent application, wherein the step of inserting the data signal during the time period using the empty level data transmission (KLDT) includes a time when the KLDT is used here A step of inserting a differential (DA) modulated data signal into the segment. Page 43 561784 ^^ 91101222 ^ VI. Scope of patent application ______ 33. As described in step 34 (c) of the scope of patent application, step 34 (c) is about to carry the data of the data ^:% material / method, where this and the data The process of the receiver also includes the steps of transmitting a data stored in the equipment to a user of the television receiver stored in the data receiver. The accessible data store uses a TV video signal to transfer the data: 忐, including the following steps (a) :: TV ^ number is reprocessed into a non-dry TV signal; and the carrying capacity of the viewer is disturbed (b) the 35 signal televisions carrying information. 〇 TV and data reception as described in the scope of the application for the scope of the patent application of the transmission data = ^), is to re-process the TV signal a method 'where the public bears the data of the TV signal does not interfere with the viewing data transmission (CTDT ) Method, that is, an electric two; two data color table ... two are used to represent binary data: =; = most: ground 36 & the step of representing the data in the mega pixel. (2) In the second step (a) of the data transmission method described in item 34 of the patent scope, the step of reprocessing the television signal, or the television signal carrying the data of the viewer, includes the following steps: interference, object data transmission ( PODT) method 'is about a TV II, pre-process.丨 α uses Fan 豕 I for data transmission. The data transmission method as described in item 34 of the scope of patent application, in which a pixel is used to display a specified object ': 37 vi 91101222 92, 38 39 40 41 Scope of patent application ----- 'In the step (a), the viewer's data bearing electric data Λ is reprocessed into a step that does not interfere with the visual signal and the small object data is No. 2, including-a The electricity 'and this pixel are used to display with a signal: a process as small as the patent application. : Step U), that is, the data transmission method described by the television, in which the electricity carrying data of the two people is re-processed into a unit: the signal is provided by a proprietary object, including the unit: Reprocessing with a TV image: Lost: Tτ) method: Use this pixel for data transmission to display a proprietary object, such as the process of applying to Kui and Bedding to find W. In step (a), the method of transmitting data described in item 1 of item 1 in Step 1, 1 φ viewer AV: reprocess the TV signal to -ΛΛ 此 ~, to invisible data: :: ：, including- Electricity, and two: to determine a process of transferring information in the invisible building, where it is used. The method of transmitting data described in item 39 of the J range in step (a), wherein the step PΛ of the data signal is used to transmit TV pixel data of two invisible buildings. Steps for transmitting FM data signals: The data transmission method described in item 39 of the above range, where the information is transmitted ^ step 7 and Λ is transmitted in the TV pixels of the invisible building. , Including a page 45 that transmits a multi-frequency (MF) data signal, 561784 92 8. 22 _Case No. 91101222_ Year Month Day Amendment_ Sixth, the steps of applying for patent scope. 4 2 · The method for transmitting data as described in item 39 of the scope of patent application, wherein in step (a), the step of transmitting a data signal by using television pixels in the invisible frame includes a transmission phase modulation (PM ) Data signal steps. 43. The method for transmitting data as described in item 39 of the scope of patent application, wherein in step (a), the step of transmitting a data signal by using television pixels in the invisible frame includes a transmission polyphase modulation ( MP) data signal step. 4 4 · The method for transmitting data as described in item 39 of the scope of patent application, wherein in step (a), the step of transmitting a data signal by using the television pixels in the invisible frame, including a transmission with a compensation format (CF) a step of modulating a data signal. 4 5 · The method for transmitting data as described in item 39 of the scope of patent application, wherein in step (a), the step of transmitting a data signal using the television pixels in the invisible frame includes a transmission compensation amplitude (CA ) The step of modulating the data signal. 46. The method for transmitting data as described in item 39 of the scope of patent application, wherein in step (a), the step of transmitting a data signal by using television pixels in the invisible frame includes a transmission difference (DA ) The step of modulating the data signal. 4 7 · A device for transmitting data by using a television video signal, which is a video game system including: a television signal interface / decoding method for receiving video game data Page 46 561784 _Case No. 91101222_Year Month__ VI. Scope of patent application The TV signal encoded with the material signal is then decoded to use the information signal. 48. The data transmission device as described in claim 47, wherein the television signal interface / decoding method includes a television interface for receiving a television signal encoded with a video game data signal. 4 9 · The data transmission device described in item 47 of the scope of patent application, further includes a game controller that a player can use to play games on the video game system. 5 0 · —A device for transmitting data using television video signals, which is a The stock price update system includes: A TV signal interface / decoding method for receiving TV signals encoded with stock price information signals. Page 47