TH27260B - Invisible signal modulator for persistent sidebar signals. - Google Patents

Abstract

TV tuner that will be used with the signal in the HDTV system that will be output as Of a persistent sidebar signal (VSB) with a single-dimensional set of data. Which consists of a cycle First carrier equalizer (18), equalizer (20) and second carrier modulator (22, 30, 62). Multisector quantitative (50,66) circuit that serves. Set number With increased resolution Will be used in conjunction with the equalizer function In order to make the equalization invisibly Without the need for a "procession" signal, the second convolution circuit consists of a wave front detector (30), which the input signal at One symbol (312) and a quantified input signal (310) are combined into a multiply signal (316) and a non-quantified input signal. And that is quantified (310) and one slowed down input signal (314) is merged into a multiply signal (318). Multiply them together is subtracted (320) to produce an output signal that is The discrepancy in front of the wave of the leading signal

Claims (6)

1. In an output receiving system with a convection signal booster, the device contains a (20) equalizer for visual equalization. There is no visible signal of the received signal and the control circuit to control the function of the equalizer to cause Such invisible equalization The control circuit consists of (a) a multi-sector quantifier (50) to quantify the output data from the Equalize the condition The quantity determinant serves to divide the assignment level. Detailed quantities in a hierarchical, appropriate sector (b) detectors (60,66) responding to quantitative data from the quantifier. And (c) a means for linking the said control signal to the equalizer. 2. Equipment according to claim 1, where the signal received is a signal. With persistent lateral frequency band (VSB) formatted as a single-dimensional set of data symbols. (-7, -5, -3, -1,1,3,5,7) that represents the image data. The digital and presence of such carrier enhancement and volume determinants will be assigned to the VSB symbol group as a smaller group of symbols, respectively. 3. Equipment according to claim 2, where the signal at Received as an 8-VSB signal, and the determination of the volume is divided into steps. 2-level, 4- level and 8-level respectively 4. equipment according to claim 1, the control circuit is also equipped with a path (66) for generating control signals. For controlling the effect of the output data provided by such quantity determiners 5. Equipment according to Clause 1 and also contains One (18) convolution modulation circuit to provide near base band signal to body. Such equalization and where the control circuit also generates a tolerance signal (E) indicating the Discrepancies of the transport signal in order to access the control input of the volume indicator 6. Equipment according to claim 1 and also includes Convection circuit (22,30,62) to shift the output signal from the modulator to Equal to the base frequency band 7. Equipment according to claim 5 and also consists of ; Second convolution circuit (22,30,62) to shift the output signal from the modulator. 8. Equipment according to claim 1, and also includes a path (60) for generating a signal that will represent the difference between the inputs that are still No quantity is assigned to that quantity determinant. And the output that determines the quantity already from Such quantity determinant This results in an error in front of the transport signal and the path (62) for the transmission of such differential signals to the equalizer and to the aforementioned detector. 9. In the system for receiving video signals. That is exported that contains a group set of symbols. Information that is digital image data And there is an additional adjustment for that lead signal The methods used in conjunction with the body Signal equalization to achieve invisible equalization, the method of which consists of the following steps: (a) equalization of the received input signal. To cause (B) the number of repetitions of the aforementioned output signal from the step Equalization of the multiple quantification steps to higher resolution respectively, in which the quantification consists of the steps: (1) grouping such a set of symbols into a series of symbols. Set (2) quantity determines each set of symbols at a level of resolution. Step one, with areas that define the common state To create output symbols for each set. (3) Evaluation of the given output symbol. With relative value Starts its transformation and (4) iterates in steps (1) to (3) depending on the start value of the change. (C) Discrepancy signaling. It depends on the specified output symbol and (d) the transmission of the error signal to the control input of the modulator. 1 0. Method for Clause 9, where each level of the said volume adjustment will Consists of the steps of The grouping of such a group of symbols As a set of symbols Evaluation of each symbol set in relation to the state and impregnation region, the output of the given symbol quantity depends on the Evaluate the results of the area designated for such status 1 1. Method of claim 9 where in the grouping process The symbols are grouped in a The series were smaller, respectively, and in the evaluation process thereof. The area that defines the status will have a range that Narrow down by No. 1 2. Method according to Clause 9, where the signal was received. It is a persistent side-band signal (VSB) formed as a group of single-dimensional information symbols (-7, -5, -3, -1,1,3,5,7). 3. Method according to Clause 12 where the received signal is an 8-VSB signal, and the quantification procedure consists of three quantifying steps. It is a 2-level, 4- level and 8-level quantity, respectively 1. 4. Procedures according to Clause 9, where the aforementioned steps (1) to (3) will be repeated. Until each symbol set has The symbol is only one. 5. Procedures in Clause 9 also includes a procedure for Customizing the status area By using a supplementary adjustment greater than one 1 6. Procedures in Clause 9 also consist of a procedure. The combination of the symbol output that defines such a state to cause As the stream is up