(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2005/0114899 A1
`(43) Pub. Date:
`May 26, 2005
`Shih et al.
`
`US 20050114899A1
`
`(54) DIGITAL SET-TOP BOX
`
`Publication Classi?cation
`
`(76) Inventors: Victor Shih, Chung Ho City I-Te Chou, Chung Ho City (TW);
`
`Lieng-Min Fang, Chung Ho City
`(TW); Yan-Hua Liao, Chung Ho City
`(TW); Yang-Long Lin, Chung Ho City
`(TW)
`Correspondence Address:
`THOMAS, KAYDEN, HORSTEMEYER &
`RISLEY, LLP
`100 GALLERIA PARKWAY, NW
`STE 1750
`ATLANTA, GA 30339-5948 (US)
`
`(21) Appl. No.:
`
`10/714,798
`
`(22) Filed:
`
`Nov. 17, 2003
`
`(30)
`
`Foreign Application Priority Data
`
`Oct. 27, 2003
`
`........................................ .. 92129811
`
`(51) Int. c1.7 ......................... .. H04N 7/173; H04N 7/16;
`H04N 5/44; H04N 7/20; H04N 5/50
`(52) US. Cl. ....................... .. 725/100;725/131;725/151;
`725/139; 725/73; 348/725;
`348/731
`
`(57)
`
`ABSTRACT
`
`A digital set-top box is disclosed. The digital set-top box
`comprises a tuner, a demultiplexer, a MPEG-2 decoder, a
`deinterlace video processor and a microprocessor. The digi
`tal set-top box further comprises a digital to analog con
`verter. The digital set-top box can transfer the received
`digital broadcasting signal to a display signal compatible
`With the format to be received by a display, such as VGA or
`DVI signals, and a user can Watch the display signal on the
`display.
`
`digital broadcasting signal
`
`100
`/_
`
`110
`f4
`
`130
`120 f
`f-
`MPEG2
`timer — demultiplexer —
`decoder
`
`140
`/_
`deinterlace video
`processor
`
`150 [
`
`microprocessor
`
`170 [
`
`display
`
`160
`/_
`digital to analog
`
`converter
`
`Microsoft v. Biscotti
`IPR2014-01457, IPR2014-01458, and IPR2014-01459
`Petitioner Microsoft Corporation - Ex. 1053, p. 1
`
`

`
`Patent Application Publication May 26, 2005
`
`US 2005/0114899 A1
`
`digital broadcasting signal
`
`100
`/_
`
`110
`F
`
`120
`f-
`
`.
`—> tuner — demultiplexer
`
`130
`f-
`MPEG-2
`decoder
`
`140
`F
`deinterlace video
`—
`processor
`
`150
`
`microprocessor
`
`l f-
`
`170
`
`display
`
`F
`
`160
`
`digltal to analog
`converter
`
`Fig. 1
`
`Microsoft v. Biscotti
`IPR2014-01457, IPR2014-01458, and IPR2014-01459
`Petitioner Microsoft Corporation - Ex. 1053, p. 2
`
`

`
`US 2005/0114899 A1
`
`May 26, 2005
`
`DIGITAL SET-TOP BOX
`
`BACKGROUND
`
`[0001] 1. Field of Invention
`[0002] The present invention relates to a digital set-top
`box. More particularly, the present invention relates to a
`digital set-top box that can output a display signal compat
`ible With the format to be received by a display.
`
`[0003] 2. Description of Related Art
`[0004] Recently, oWing to the rapid prevalence of liquid
`crystal displays and liquid crystal televisions, the technology
`for converting a television signal into a liquid crystal display
`signal is also developing quickly. Up to noW, there are three
`main digital television standards in the World, include Digi
`tal Video Broadcasting (DVB) created by European Broad
`cast Union (EBU), Advanced Television Systems Commit
`tee (ATSC) created by America and Integrated Services
`Digital Broadcasting (ISDB) created by Japan.
`[0005] NoW, there are tWo kinds of set-top boxes in the
`market, one is an analog set-top box and the other is a digital
`set-top box. It is important that only the analog set-top box
`(or referred to as a TV BOX) can output a VGA signal While
`the digital set-top box cannot output the VGA signal. That is,
`the digital set-top box is provided With CVBS and SCART
`outputs Without a VGA output; therefore, the digital set-top
`box knoWn in the art only can be used on a liquid crystal
`display television (LCD TV). Therefore, according to the
`digital set-top box in the present market, Which cannot
`display a video signal on a personal computer monitor.
`
`SUMMARY
`
`[0006] It is therefore an objective of the present invention
`to provide a digital set-top box that can transfer the received
`digital broadcasting signal to a display signal compatible
`With the format to be received by the display.
`[0007] In accordance With the foregoing and other objec
`tives of the present invention, a digital set-top box is
`provided. The digital set-top box comprises a tuner, a
`demultiplexer, a MPEG-2 decoder, a deinterlace video pro
`cessor and a microprocessor. The tuner receives a digital
`broadcasting signal to generate a digital data stream. The
`demultiplexer receives the digital data stream to generate a
`digital video signal. The MPEG-2 decoder receives the
`digital video signal to generate an interlaced digital video
`signal. The deinterlace video processor receives the inter
`laced digital video signal to generate a digital RGB signal,
`Wherein the digital video signal can be transmitted to a
`display via a DVI interface for a user to be Watched on the
`display. And, the microprocessor is connected to the tuner,
`the demultiplexer, the MPEG-2 decoder and the deinterlace
`video processor, for transmitting related data signal to each
`unit and controlling an operation of each unit.
`[0008] The digital set-top box of the invention further
`comprises a digital to analog converter for receiving the
`digital RGB signal and converting the digital RGB signal
`into an analog RGB signal, Wherein the analog RGB signal
`can be transmitted to a display via a VGA interface for a user
`to be Watched on the display.
`
`[0009] It is to be understood that both the foregoing
`general description and the folloWing detailed description
`
`are by examples, and are intended to provide further expla
`nation of the invention as claimed.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`[0010] The accompanying draWings are included to pro
`vide a further understanding of the invention, and are
`incorporated in and constitute a part of this speci?cation.
`The draWings illustrate embodiments of the invention and,
`together With the description, serve to explain the principles
`of the invention. In the draWings,
`[0011] FIG. 1 is a block diagram illustrating the digital
`set-top box of the invention.
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`
`[0012] Reference Will noW be made in detail to the present
`preferred embodiments of the invention, examples of Which
`are illustrated in the accompanying draWings.
`[0013] The operation of the digital set-top box 100 of the
`invention is given in the folloWing description. The digital
`set-top box 100 is used for receiving a digital broadcasting
`signal and converting the digital broadcasting signal into a
`display signal compatible With the format to be received by
`a personal computer display. Disclosed herein is the opera
`tion of a video signal of the digital broadcasting signal, and
`the operation of an audio signal of the digital broadcasting
`signal is performed in a conventional manner, thus the
`operation of the audio signal of the digital broadcasting
`signal Will not be described in beloW.
`
`[0014] Referring to FIG. 1, FIG. 1 is a block diagram
`illustrating the digital set-top box of the invention. The
`digital set-top box 100 includes a tuner 110, a demultiplexer
`120, a MPEG-2 decoder 130, a deinterlace video processor
`140 and a microprocessor 150. The microprocessor 150 is
`connected to the tuner 110, the demultiplexer 120, the
`MPEG-2 decoder 130 and the deinterlace video processor
`140. The microprocessor 150 is used to transmit related data
`signals to each unit and control operation of each unit.
`[0015] The operation of the digital set-top box 100 of the
`invention is described as folloWs.
`
`[0016] The tuner 110 receives a digital broadcasting signal
`to generate a digital data stream and transmits the digital
`data stream to the demultiplexer 120. The digital broadcast
`ing signal described above includes a digital cable broad
`casting signal or a digital Wireless broadcasting signal. The
`digital cable broadcasting signal includes, for example,
`DVB-C or ISDB-C. The digital Wireless broadcasting signal
`includes, for example, a digital Wireless terrestrial broad
`casting signal such as DVB-T or ISDB-T, a digital Wire
`satellite broadcasting signal such as DVB-S or ISDB-S, and
`ATSC.
`[0017] Then, the demultiplexer 120 generates a digital
`video signal according to the received digital data stream.
`Next, the MPEG-2 decoder 130 generates an interlaced
`digital video signal according to the digital video signal.
`Next, the deinterlace video processor 140 receives the
`interlaced digital video signal from the MPEG-2 decoder
`130 to generate a digital RGB signal.
`[0018] If the display 170 is provided With a Digital Visual
`Interface (DVI) port, the deinterlace video processor 140 can
`
`Microsoft v. Biscotti
`IPR2014-01457, IPR2014-01458, and IPR2014-01459
`Petitioner Microsoft Corporation - Ex. 1053, p. 3
`
`

`
`US 2005/0114899 A1
`
`May 26, 2005
`
`directly transmit the digital RGB signal via the DVI port to
`the display 170 for a user to be Watched on the display 170.
`On the other hand, if the display 170 is provided Without a
`DVI port, the deinterlace video processor 140 transmits the
`digital RGB signal to a digital to analog converter 160, and
`the digital to analog converter 160 converts the digital RGB
`signal into an analog RGB signal and transmits the analog
`RGB signal via a VGA interface to the display 170 for the
`user to be Watched on the display 170. The display 170
`includes a CRT monitor or a LCD.
`
`[0019] As described above, the digital set-top boX of the
`invention can transfer the received digital cable broadcasting
`signal or the received digital Wireless broadcasting signal to
`a display signal compatible With the format to be received by
`a display, such as VGA or DVI signals, and a user can Watch
`the display signal on the display.
`[0020] Although the present invention has been described
`in considerable detail With reference to certain preferred
`embodiments thereof, other embodiments are possible.
`Therefore, their spirit and scope of the appended claims
`should no be limited to the description of the preferred
`embodiments contained herein.
`
`[0021] It Will be apparent to those skilled in the art that
`various modi?cations and variations can be made to the
`structure of the present invention Without departing from the
`scope or spirit of the invention. In vieW of the foregoing, it
`is intended that the present invention cover modi?cations
`and variations of this invention provided they fall Within the
`scope of the folloWing claims and their equivalents.
`
`What is claimed is:
`1. A digital set-top boX, comprising:
`a tuner for receiving a digital broadcasting signal and
`generating a digital data stream;
`a demultipleXer for receiving said digital data stream and
`generating a digital video signal;
`a MPEG-2 decoder for receiving said digital video signal
`and generating an interlaced digital video signal;
`
`a deinterlace video processor for receiving said interlaced
`digital video signal and generating a digital RGB
`signal, Wherein said digital video signal can be trans
`mitted to a display via a DVI interface for a user to be
`Watched on said display; and
`
`a microprocessor connected to said tuner, said demulti
`pleXer, said MPEG-2 decoder and said deinterlace
`video processor, for transmitting related data signal to
`each unit and controlling an operation of each unit.
`2. The digital set-top boX of claim 1, further comprising
`a digital to analog converter for receiving said digital RGB
`signal and converting said digital RGB signal into an analog
`RGB signal, Wherein said analog RGB signal can be trans
`mitted to said display via a VGA interface for a user to be
`Watched on said display.
`3. The digital set-top boX of claim 1, Wherein said digital
`broadcasting signal comprises a digital cable broadcasting
`signal.
`4. The digital set-top boX of claim 1, Wherein said digital
`broadcasting signal comprises a digital Wireless broadcast
`ing signal.
`5. The digital set-top boX of claim 4, Wherein said digital
`Wireless broadcasting signal comprises a digital Wireless
`terrestrial broadcasting signal.
`6. The digital set-top boX of claim 5, Wherein said digital
`Wireless terrestrial broadcasting signal comprises a DVB-T
`terrestrial broadcasting signal.
`7. The digital set-top boX of claim 4, Wherein said digital
`Wireless broadcasting signal comprises a digital Wireless
`satellite broadcasting signal.
`8. The digital set-top boX of claim 7, Wherein said digital
`Wireless satellite broadcasting signal comprises a DVB-S
`satellite broadcasting signal.
`9. The digital set-top boX of claim 4, Wherein said digital
`Wireless broadcasting signal comprises an AT SC digital
`broadcasting signal.
`
`Microsoft v. Biscotti
`IPR2014-01457, IPR2014-01458, and IPR2014-01459
`Petitioner Microsoft Corporation - Ex. 1053, p. 4