TH20446B - A device that provides a digital TV tuner clock signal is the answer to changing channels. - Google Patents

Abstract

High profile TV receiver It consists of a digital signal processing circuit that receives high resolution TV signals. These include high-priority, narrow-band data from the received system clock and wide-band low-priority data. After changing the TV channel, clock signal It is developed from the narrow band information corresponding to the previously used TV tuner, which uses the received clock signal. Until the clock signal with the desired phase property has been developed from the new TV receiver narrowband data.

Claims (3)

1.In a system for processing high-profile TV signals, the equipment consists of A method for providing a TV tuner control signal that indicates the system is tuning from the first TV channel to the second TV tuner. A digital signal processing path that includes signal inputs for high-detail TV reception. And clock signal inputs A path that responds to high-detail TV signals And connect the TV tuner control signal for clock development at the clock output. The path of development included a pathway for the output of such a clock signal (a) the first clock signal developed from television data. information) corresponding to the first TV tuner during the first period after changing the TV tuner. And (b) the second clock signal developed from the TV data corresponds to the second receiver when the second clock signal shows the desired phase properties and path for connecting the clock output of the path of such development. 2. The device, according to claim 1, produces a high profile TV signal that is exactly the same frequency band. With pre-existing standard TV channels It consists of a narrow-band modulated section with high-priority information and a wide-band modulated part with low-priority information and a path of clock development based on such high-priority data.3. Equipment according to claim 2, the pathway of the development of clock signals will include High-profile TV signal response path for selective restoration of such high-priority data. Frequency synthesizer path with control inputs And the output of the signal Phase control paths that include phase control inputs that respond to high-priority information and to the output signal from the frequency synthesizer for the development of phase-fault signals and pathways for the linkage used. Represent the phase error. To the phase control inputs of the phase-controlled trajectory during that initial And to the control inputs of the frequency synthesizer at any other time 4. Equipment in accordance with claim 3 which means of connection such as A switch path with an input for receiving a signal that represents a phase fault, the first output connected to the control input of the frequency synthesizer, and the second output connected to the phase control input of the The phase control pathway and the way it responds to the switching control signal. And connect a signal that represents a phase fault for controlling the switching of the aforementioned switching path between the first and second outputs 5. Equipment according to claim 4, whose control path is For controlling the switching path of the switch, it adds a response to the high-priority data that has been restored to control the switch-path. 6. Device according to claim 3, which Such a method for the selective restoration of high-priority data to a non-linear network, 7.Devices according to claim 6, in which high-priority data shows less than 30% of the saturation frequency band width. 8. Equipment according to claim 1, the digital signal processing method, including the balancing modulator, responds to the said clock signal from such development path. 9. Device according to claim 8, which the The equalizer is a narrow 1 0. In a system for receiving a high profile TV signal whose frequency band width fits in with a pre-existing standard TV tuner. And consists of a narrow band modulated part with high-importance information. And the modulated portion of the wide frequency band with low-key data, the device consists of The path for providing a control signal for switching the TV tuner indicates that the TV tuner is being tuned from the first TV channel to the second TV tuner. One digital signal processing method that includes a balanced setting. And there is a signal input for receiving a TV signal And a clock signal input for processing such high-priority data. The second method of digital signal processing That includes a balance adjuster and has signal inputs for receiving TV signals. And the clock signal input for processing such important information. A way to respond to high-priority information And connect the said TV switching control signal to develop the clock signal at the clock output. The path of such development will include a pathway for the output of that signal (a) a first clock signal developed from the TV data corresponding to the first TV tuner during the first period after switching to a TV tuner. And (b) the second clock signal developed from the TV data corresponding to the second receiver when the second clock signal shows the desired phase properties and the path for connecting the clock output of such development in. With the clock input of the aforementioned first and second digital signal processing pathways. The path of such development will include (a) A non-linear response path for restoring such high-priority frequency band information from such TV signals. (b) Frequency synthesizer path with control input and signal output. (c) Phase control path, including phase control inputs, that respond to high-priority data restored from the non-linear path. And responds to the output signal from the frequency synthesizer To develop signals that represent phase faults. (d) Switching path with an input for a signal that represents such phase faults. The first output is connected to the frequency synthesizer control input and the second output is connected to the phase control input of that phase control path. (e) A control path that responds to the said switching control signal and to the signal representing such phase faults. To control the switching Of the path between the first and second outputs in such a way that the signals that represent such phase faults Will be connected to the phase control input of the said phase control path During the first period And to the control input of the aforementioned frequency synthesizer at other times 1 1. Device according to claim 10, where such narrow band information will show less than 30% of the saturation frequency band width 1. 2. A device according to the 10th qualification whose balancing modulator, including the first digital signal processing path, is a narrow-gap equalizer that responds to such a clock signal from its path. Development 1 3. Equipment in accordance with claim 10, which the above control path adds to the response to high-priority data restored from the non-linear path.