Apparatus for transmitting/receiving video signal

• US 20030093512A1
• Filed: 04/18/2002
• Published: 05/15/2003
• Est. Priority Date: 11/13/2001
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Seo, Young-Joo, Park, In-Sik
• Granted Patent: US 7,110,043 B2
• Time in Patent Office: Days
• US Class Current: 709/223
• CPC Class Codes: H04N 21/2368 Multiplexing of audio and video streams
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 21/4341 Demultiplexing of audio and video streams
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114

Abstract

An apparatus for transmitting a video signal to a remotely installed display apparatus, and a corresponding apparatus for receiving a video signal are provided. The apparatus for transmitting a video signal includes a PCI bridge, a transmitter, and a transceiver-PCI interface. The PCI bridge receives a high-definition (HD) TS or a standard definition (SD) TS, and converts the received HD TS or SD TS to a PCI bus format. The transmitter transmits the HD TS or SD TS, which was converted to the PCI bus format, as a radio signal. The transceiver-PCI interface performs an interface between the transmitter and the PCI bridge. The apparatus for transmitting/receiving a video signal is capable of transmitting/receiving video and audio signals without a wire, thereby allowing easy and convenient installation and management of display devices.

Claims

1. An apparatus for transmitting a video signal, comprising:

a PCI bridge for receiving a high-definition (HD) transmit stream (TS) or a standard-definition (SD) TS, and converting the received HD TS or SD TS to a format of a peripheral communication interface (PCI) bus;

a transmitter for transmitting the HD TS or the SD TS, which was converted to the format of a PCI bus, as a radio signal; and

a PCI transceiver interface for interfacing the PCI bridge and the transmitter.

2. The apparatus of claim 1 further comprising a MPEG-2 encoder for receiving an SD-grade video signal and encoding the SD grade video signal in accordance with an MPEG standard, and outputting the encoded signal as an SD TS.

3. The apparatus of claim 2, wherein the MPEG-2 encoder is an MP@ML encoder.

4. The apparatus of claim 2 further comprising an A/V switch for receiving a plurality of composite video signals, and for selectively transmitting one of the composite video signals to the MPEG-2 encoder.

5. The apparatus of claim 4 further comprising:

a tuner for receiving broadcasting signals, selecting a general TV signal from the broadcasting signals, and outputting the general TV signal as an intermediate frequency signal; and

an analog IF decoder for recovering a broadcast composite video signal from the intermediate video signal output from the tuner, and supplying the broadcast composite video signal as one of the plurality of composite video signals to the A/V switch.

6. The apparatus of claim 5, wherein the tuner is adapted to select an HDTV signal from the broadcasting signals, and to output the HDTV signal, and

the apparatus further comprises a channel decoder for demodulating the HD TS from the HDTV signal, and supplying the demodulated HD TS to the PCI bridge.

7. An apparatus for receiving a video signal, comprising:

a receiver for receiving an HD TS or a SD TS that is transmitted as a radio signal and converted to the format of a PCI bus;

a PCI bridge for converting the HD or SD-grade video signal, which is received from the receiver and converted to the format of a PCI bus, into the HD TS or the SD TS;

a transceiver-PCI interface for interfacing the receiver and the PCI bridge; and

an MPEG-2 decoder for recovering video and audio signals from the HD TS or the SD TS output from the PCI bridge, and for outputting the recovered video and audio signals.

8. A system for transmitting/receiving a video signal including an apparatus for transmitting a video signal, and an apparatus for receiving a video signal, wherein the apparatus for transmitting a video signal comprises:

a first PCI bridge installed in a set top box (STB), the PCI bridge for receiving an HD TS or an SD TS, and for converting the received HD TS or SD TS to the PCI bus format;

a transmitter for transmitting the HD TS or the SD TS, which was converted to the PCI bus format, as a radio signal; and

a transceiver-PCI interface for interfacing the transmitter and the first PCI bridge, and

wherein the apparatus for receiving a video signal comprises;

a receiver installed in a video signal display, the receiver for receiving the HD TS or the SD TS, which is converted to the PCI bus format;

a second PCI bridge for converting an HD or an SD-grade video signal, which is received from the receiver and converted to the PCI bus format, into the HD TS or the SD TS;

a transceiver-PCI interface for interfacing the receiver and the second PCI bridge; and

an MPEG-2 decoder for recovering video and audio signals from the HD TS or SD TS output from the second PCI bridge, and for outputting the recovered video and audio signals.

9. The system of claim 8, wherein the apparatus for transmitting a video signal further comprises an MPEG-2 encoder for receiving an SD-grade video signal, encoding this signal in accordance with the MPEG-2 standard, and outputting the encoded signal as the SD TS.

10. The system of claim 9, wherein the MPEG-2 encoder is an MP@ML encoder.

11. The system of claim 9, wherein the apparatus for transmitting a video signal further comprises an A/V switch for receiving a plurality of composite video signals, and for selectively supplying one of the composite video signals to the MPEG-2 encoder.

12. The system of claim 11, wherein the apparatus for transmitting a video signal further comprises:

a tuner for receiving broadcasting signals, selecting a general TV signal from the broadcasting signals, and outputting the general TV signal as an intermediate frequency signal; and

an analog IF decoder for recovering a broadcast composite video signal from the intermediate frequency signal output from the tuner, and for outputting the recovered broadcast composite video signal, as one of the plurality of composite video signals, to the A/V switch.

13. The system of claim 12, wherein the tuner is adapted to select an HDTV signal from the broadcasting signals, and output the HDTV signal, and

the apparatus for transmitting a video signal further comprises a channel decoder for demodulating the HD TS from the HDTV signal, and for outputting the demodulated HD TS to the first PCI bridge.