Datacast bandwidth in wireless broadcast system

• US 20020106987A1
• Filed: 02/05/2001
• Published: 08/08/2002
• Est. Priority Date: 02/05/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Command Audio Corporation
• Inventors: Linden, Thomas M.
• Granted Patent: US 6,622,007 B2
• Time in Patent Office: Days
• US Class Current: 455/12.1
• CPC Class Codes: H04H 20/30 by a single channel
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 2201/183 FM digital or hybrid
• CPC Class Codes: H04H 60/06 Arrangements for scheduling broadcast services or broadcast-related services
• CPC Class Codes: H04N 21/2402 Monitoring of the downstream path of the transmission network, e.g. bandwidth available traffic monitoring in data switching networks H04L43/00; monitoring data switching networks utilization H04L43/0876
• CPC Class Codes: H04N 21/26216 involving the channel capacity, e.g. network bandwidth admission control, resource allocation in open networks H04L12/5692; flow control in packet networks H04L47/10; establishing a schedule or organising the servicing of application requests taking into account QoS H04L67/61
• CPC Class Codes: H04N 21/2665 Gathering content from different sources, e.g. Internet and satellite
• CPC Class Codes: H04N 21/6112 involving terrestrial transmission, e.g. DVB-T
• CPC Class Codes: H04N 21/8106 involving special audio data, e.g. different tracks for different languages
• CPC Class Codes: H04N 21/8126 involving additional data, e.g. news, sports, stocks, weather forecasts

Abstract

A network datacast system includes a plurality of transmission facilities. Each transmission facility receives primary programs from one or more media studios. Each transmission facility also receives ancillary data programs from a network datacast center. Each transmission facility broadcasts a wireless signal that includes a primary channel and at least one ancillary data channel. The transmission facilities contemporaneously transmit the ancillary programs on the ancillary data channels. A network datacast receiver contemporaneously receives the wireless signals and extracts the datacast programs from each datacast signal. The extracted datacast programs are stored in the receiver for subsequent output to the user.

Claims

1. A datacast transmission network comprising:

a network datacast center including a content database, a channel distribution server coupled to the content database, and first and second ancillary data channel servers coupled to the channel distribution server;

a first wireless transmission facility coupled to receive a first primary program from a first media studio and a second primary program from a second media studio, and to receive a first ancillary program from the first ancillary data channel server, wherein the first transmission facility transmits a first wireless signal including the first and second primary programs and the first ancillary program; and

a second wireless transmission facility coupled to receive a third primary program from a third media studio and a fourth primary program from a fourth media studio, and to receive a second ancillary program from the second ancillary data channel server, wherein the second transmission facility transmits, contemporaneously with the first wireless signal, a second wireless signal including the third and fourth primary programs and the second ancillary program.

2. The network of claim 1, wherein the first wireless signal is a first satellite broadcast signal and the second wireless signal is a second satellite broadcast signal.

3. The network of claim 1, wherein the first wireless signal is a first ensemble multiplex signal and the second wireless signal is a second ensemble multiplex signal.

4. A datacast transmission network comprising:

a network datacast center including a content database, a channel distribution server coupled to the content database, and first and second ancillary data channel servers coupled to the channel distribution server;

a first wireless transmission facility coupled to receive a first primary program from a first media studio and to receive a first ancillary program from the first ancillary data channel server, wherein the first transmission facility transmits a first wireless signal including the first primary program and the first ancillary program; and

a second wireless transmission facility coupled to receive a second primary program from a second media studio and to receive a second ancillary program from the second ancillary data channel server, wherein the second transmission facility transmits, contemporaneously with the first wireless signal, a second wireless signal including the second primary program and the second ancillary program.

5. The network of claim 4, wherein the first wireless signal is modulated using a first modulation method different from a second modulation method used to modulate the second wireless signal.

6. The network of claim 5, wherein the first modulation method is frequency modulation and the second modulation method is amplitude modulation.

7. The network of claim 4, wherein the first transmission facility transmits using a first broadcast format and the second transmission facility transmits using a second broadcast format different from the first broadcast format.

8. The network of claim 7, wherein the first broadcast format is a terrestrial broadcast system format and the second broadcast format is a satellite broadcast system format.

9. A datacast receiver comprising:

a wireless signal tuning unit, the tuning unit being adapted to contemporaneously receive a first wireless signal including a first ancillary data channel and a second wireless signal including a second ancillary data channel;

a digital signal processor coupled to receive from the tuning unit a first ancillary program extracted from the first ancillary data channel and a second ancillary program from the second ancillary data channel;

a microcontroller coupled to the digital signal processor;

a user control interface coupled to the microcontroller;

a content storage unit coupled to the microcontroller; and

an output unit coupled to the microcontroller.

10. The receiver of claim 9, wherein the first wireless signal is a first satellite broadcast signal and the second signal is a second satellite broadcast signal.

11. The receiver of claim 9, wherein the first wireless signal is a first ensemble multiplex signal and the second wireless signal is a second ensemble multiplex signal.

12. The receiver of claim 9, wherein the tuning unit includes a first tuner receiving the first wireless signal and a second tuner receiving the second wireless signal, the first wireless signal being modulated using a first modulation method and the second wireless signal being modulated using a second modulation method, the first and second modulation methods being different.

13. The receiver of claim 12, wherein the first modulation method is frequency modulation and the second modulation method is amplitude modulation.

15. The method of claim 14, further comprising:

providing first and second primary programs in the database;

accessing the first and second primary programs;

passing the accessed first primary program to the first transmission facility and the accessed second primary program to the second transmission facility; and

using the first transmission facility to transmit the first primary program in a first primary channel and contemporaneously using the second transmission facility to transmit the second primary program in a second primary channel, the transmitting of the first and second primary programs being contemporaneous with the transmitting of the first and second ancillary programs.

16. The method of claim 14, wherein the first wireless ancillary data channel is included in a first single multiplex of a first ensemble multiplex wireless signal and the second wireless ancillary data channel is included in a second single multiplex of a second ensemble multiplex wireless signal.

17. The method of claim 14, further comprising:

using a first modulation method to modulate a first wireless signal carrying the first ancillary program; and

using a second modulation method, different from the first modulation method, to modulate a second wireless signal carrying the second ancillary program.

18. The method of claim 14, wherein the first transmission facility is associated with a satellite wireless transmission system and the second transmission facility is associated with a terrestrial wireless transmission system.

20. The method of claim 19, further comprising:

receiving a first wireless signal carrying the first ancillary data channel, the first signal being modulated with a first modulation method; and

receiving a second wireless datacast signal carrying the second ancillary data channel, the second signal being modulated with second modulation method different from the first modulation method.

21. The method of claim 19, wherein the first wireless ancillary data channel is included in a first single multiplex of a first ensemble multiplex wireless signal and the second wireless ancillary data channel is included in a second single multiplex of a second ensemble multiplex wireless signal.

22. The method of claim 19, wherein the first ancillary data channel is in a first broadcast format and the second ancillary data channel is in a second broadcast format different from the first broadcast format.

23. The method of claim 22, wherein the first broadcast format is a terrestrial broadcast system format and the second broadcast format is a satellite broadcast system format.

14. A method of transmitting data, comprising the acts of:

providing first and second ancillary programs in a database;

accessing the first and second ancillary programs;

passing the accessed first ancillary program to a first transmission facility and the accessed second ancillary program to a second transmission facility; and

using the first transmission facility to transmit the first ancillary program in a first wireless ancillary data channel and contemporaneously using the second transmission facility to transmit the second ancillary program in a second wireless ancillary data channel.

19. A method of receiving data, comprising the acts of:

tuning to a first wireless ancillary data channel and contemporaneously tuning to a second wireless ancillary data channel;

extracting a first ancillary program from the first ancillary data channel and contemporaneously extracting a second ancillary data program from the second datacast channel; and

storing the first and second ancillary programs in a content storage positioned in a receiver.