Terrestrial transmitting station for transmitting a terrestrial broadcast signal, satellite-aided broadcast system and receiver for a satellite-aided broadcast system
First Claim
1. A broadcast system, comprising:
- a first terrestrial transmitting station arranged to send out a first terrestrial transmit signal, including an associated first receiver arranged to receive a first transmit signal to obtain a first receive signal, an associated second receiver arranged to receive a first local signal to obtain a local receive signal, a signal combiner arranged to combine the first receive signal with the local receive signal to provide a first combination signal, wherein the signal combiner is implemented to generate the first combination signal so that the first combination signal is configured according to a hierarchical modulation, wherein the first receive signal is included in a base layer of the hierarchical modulation, and wherein the local receive signal is included in an overlay layer of the hierarchical modulation, and a transmitter arranged to send out the first combination signal as the first terrestrial transmit signal; and
a second terrestrial transmitting station arranged to send out a second terrestrial transmit signal, including an associated first receiver arranged to receive the first transmit signal to obtain a second receive signal, an associated second receiver arranged to receive a second local signal, to obtain an associated local receive signal, an associated signal combiner arranged to combine the second receive signal with the associated local receive signal to provide a second combination signal, wherein the associated signal combiner is implemented to generate the second combination signal so that the second combination signal is configured according to a hierarchical modulation, wherein the second receive signal is included in a base layer of the hierarchical modulation, and wherein the associated local receive signal is included in an overlay layer of the hierarchical modulation, and an associated transmitter arranged to send out the second combination signal as the second terrestrial transmit signal;
wherein the first terrestrial transmitting station and the second terrestrial transmitting station are implemented to receive different local signals, and wherein the first local signal is different from the second local signal;
wherein the first terrestrial transmitting station and the second terrestrial transmitting station are implemented so that the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station include an equal carrier frequency and an equal modulation type;
wherein the first terrestrial transmitting station and the second terrestrial transmitting station are further arranged so that an overlapping area exists in which the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station constructively overlap regarding the base layer of the hierarchical modulation;
wherein a carrier frequency of each of the first and second combination signals emitted from the first and second terrestrial transmitting stations is equal to a carrier frequency of a second transmit signal which is a satellite signal and which is receivable in the overlapping area;
wherein the first transmit signal includes a payload data content including a payload data content of the second transmit signal;
wherein information included in the base layer of the first terrestrial transmit signal emitted from the first terrestrial transmitting station is equal to information included in a base layer of the second transmit signal; and
wherein the base layer of the hierarchical modulation of the second terrestrial transmit signal is equal to the base layer of the hierarchical modulation of the second combination signal emitted from the second terrestrial transmitting station.
1 Assignment
0 Petitions
Accused Products
Abstract
A terrestrial transmitting station for sending out a terrestrial broadcast signal includes a first receiver for receiving a signal to obtain a satellite receive signal, a second receiver for receiving a local signal to obtain a local receive signal and a signal combiner for combining the first receive signal with the local receive signal to form a combination signal. The signal combiner is implemented to generate the combination signal so that the combination signal is formed according to a hierarchical modulation, wherein the first receive signal is contained in a base layer of the hierarchical modulation and wherein the local receive signal is contained in an overlay layer of the hierarchical modulation. A terrestrial transmitting station further includes a transmitter for sending out the combination signal. A broadcast system includes a first transmitter and at least one terrestrial transmitting station. The information emitted from the satellite-based broadcast system may be received using an associated receiver. An inventive broadcast system allows adding a local information to a supraregionally emitted transmit signal in a frequency-efficient way.
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Citations
21 Claims
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1. A broadcast system, comprising:
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a first terrestrial transmitting station arranged to send out a first terrestrial transmit signal, including an associated first receiver arranged to receive a first transmit signal to obtain a first receive signal, an associated second receiver arranged to receive a first local signal to obtain a local receive signal, a signal combiner arranged to combine the first receive signal with the local receive signal to provide a first combination signal, wherein the signal combiner is implemented to generate the first combination signal so that the first combination signal is configured according to a hierarchical modulation, wherein the first receive signal is included in a base layer of the hierarchical modulation, and wherein the local receive signal is included in an overlay layer of the hierarchical modulation, and a transmitter arranged to send out the first combination signal as the first terrestrial transmit signal; and a second terrestrial transmitting station arranged to send out a second terrestrial transmit signal, including an associated first receiver arranged to receive the first transmit signal to obtain a second receive signal, an associated second receiver arranged to receive a second local signal, to obtain an associated local receive signal, an associated signal combiner arranged to combine the second receive signal with the associated local receive signal to provide a second combination signal, wherein the associated signal combiner is implemented to generate the second combination signal so that the second combination signal is configured according to a hierarchical modulation, wherein the second receive signal is included in a base layer of the hierarchical modulation, and wherein the associated local receive signal is included in an overlay layer of the hierarchical modulation, and an associated transmitter arranged to send out the second combination signal as the second terrestrial transmit signal; wherein the first terrestrial transmitting station and the second terrestrial transmitting station are implemented to receive different local signals, and wherein the first local signal is different from the second local signal; wherein the first terrestrial transmitting station and the second terrestrial transmitting station are implemented so that the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station include an equal carrier frequency and an equal modulation type; wherein the first terrestrial transmitting station and the second terrestrial transmitting station are further arranged so that an overlapping area exists in which the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station constructively overlap regarding the base layer of the hierarchical modulation; wherein a carrier frequency of each of the first and second combination signals emitted from the first and second terrestrial transmitting stations is equal to a carrier frequency of a second transmit signal which is a satellite signal and which is receivable in the overlapping area; wherein the first transmit signal includes a payload data content including a payload data content of the second transmit signal; wherein information included in the base layer of the first terrestrial transmit signal emitted from the first terrestrial transmitting station is equal to information included in a base layer of the second transmit signal; and wherein the base layer of the hierarchical modulation of the second terrestrial transmit signal is equal to the base layer of the hierarchical modulation of the second combination signal emitted from the second terrestrial transmitting station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A broadcast system, comprising:
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a first transmitter which is implemented to emit a first transmit signal; a first terrestrial transmitting station arranged to send out a first terrestrial transmit signal, including a first receiver arranged to receive the first transmit signal to obtain a first receive signal, a second receiver arranged to receive a first local signal to obtain a local receive signal, a signal combiner arranged to combine the first receive signal with the local receive signal to provide a first combination signal, wherein the signal combiner is implemented to generate the first combination signal so that the first combination signal is configured according to a hierarchical modulation, wherein the first receive signal is included in a base layer of the hierarchical modulation, and wherein the local receive signal is included in an overlay layer of the hierarchical modulation, and a transmitter arranged to send out the first combination signal as the first terrestrial transmit signal; and a second terrestrial transmitting station arranged to send out a second terrestrial transmit signal including an associated first receiver arranged to receive a satellite signal to obtain an associated satellite receive signal, an associated second receiver arranged to receive a second local signal to obtain an associated local receive signal, an associated signal combiner arranged to combine the associated satellite receive signal with the associated local receive signal to provide a second combination signal, wherein the signal combiner is implemented to generate the second combination signal so that the second combination signal is configured according to a hierarchical modulation, wherein the associated satellite receive signal is included in a base layer of the hierarchical modulation and wherein the associated local receive signal is included in an overlay layer of the hierarchical modulation, and an associated transmitter arranged to send out the second combination signal as the second terrestrial transmit signal; wherein the first terrestrial transmitting station and the second terrestrial transmitting station are implemented to receive different local signals; wherein a base layer of a hierarchical modulation of a second satellite signal is equal to the base layer of the hierarchical modulation of the second combination signal emitted from the second terrestrial transmitting station; wherein carrier frequencies of the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station are equal; wherein the first local signal is different from the second local signal; and wherein the first terrestrial transmitting station and the second terrestrial transmitting station are further arranged so that an overlapping area exists in which the first combination signal emitted from the first terrestrial transmitting station and the second combination signal emitted from the second terrestrial transmitting station overlap. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification