US20070133812A1 - Sound processing unit, sound processing system, audio output unit and display device - Google Patents
Sound processing unit, sound processing system, audio output unit and display device Download PDFInfo
- Publication number
- US20070133812A1 US20070133812A1 US11/703,300 US70330007A US2007133812A1 US 20070133812 A1 US20070133812 A1 US 20070133812A1 US 70330007 A US70330007 A US 70330007A US 2007133812 A1 US2007133812 A1 US 2007133812A1
- Authority
- US
- United States
- Prior art keywords
- sound
- speaker
- information
- signal
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
- H04N5/607—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals for more than one sound signal, e.g. stereo, multilanguages
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2205/00—Details of stereophonic arrangements covered by H04R5/00 but not provided for in any of its subgroups
- H04R2205/024—Positioning of loudspeaker enclosures for spatial sound reproduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Definitions
- the present invention relates to an art for clearly reproducing sound signals of multiple channels (for example, 5.1 channel and 7.1 channel) obtained from television broadcasting or a storage device, such as a VCR (Video Cassete Recorder), a DVD (Digital Versatile Disc), and a hard disc recorder.
- the present invention is especially applied to a broadcasting receiving unit (hereinafter referred to as an STB (set-top-box)) that receives the television broadcasting and outputs a sound signal and a video signal, a sound signal source (needless to say, the video signal can also be output), a sound processing unit, such as a switcher, for processing a signal from this sound signal source and distributing the signal to multiple speakers, or a display device, such as a television receiver.
- a broadcasting receiving unit hereinafter referred to as an STB (set-top-box)
- a sound signal source seedless to say, the video signal can also be output
- a sound processing unit such as a switcher, for processing
- a sound of the 5.1 channel in which five channels of the front left (FL), the front right (FR), the center (C), the rear left (RL), and the rear right (RR) and a sub woofer (S) for reproducing a low-pitched sound are combined can be reproduced.
- a sound of the 7.1 channel including the front left center (FLC) and the front right center (FRC) is also reproduced.
- a second prior art processing is performed automatically, and a manual instruction for sound processing is not required.
- sound signal allocation processing is performed only in the audio amplifier. Accordingly, for example, even when a sound signal source connected to an audio amplifier cannot identify a speaker number connected to the audio amplifier, and when multiple sound signals such as a stereophonic sound system and the 5.1 channel can be supplied, an appropriate sound signal cannot be supplied.
- the present invention is made in consideration of the aforementioned problems.
- An object of the present invention is to provide an art for transmitting a connected state of a speaker connected to a sound processing unit to a sound signal source and requesting sound data suitable for the connected state, and enabling the reproduction of a sound suitably. Further, the present invention provides an art that enables the reproduction of more excellent sound by utilizing even a speaker installed in a display device. Moreover, the present invention provides such an art that can easily check the connection of a complicated multi-channel speaker utilizing the display unit of the display device.
- the present invention is provided with a detection circuit that detects a connected state of a speaker for each output terminal of a sound signal that corresponds to multiple sound channels and a control circuit for sending information about the connected state of the speaker, for example, to a sound signal source, such as an STB, in a sound signal processing unit, such as a switcher unit.
- a sound signal source such as an STB
- a sound signal processing unit such as a switcher unit.
- the configuration of this sound processing unit can also be provided in a display device, such as a television receiver.
- the sound signal source receives the information about the connected state of the aforementioned speaker and controls a number of sound channel supplied to the sound processing unit based on the input information.
- the aforementioned sound processing unit if it is detected by the aforementioned detection circuit that the speakers of specific channels (for example, the front right (FR) channel and the front left (FL) channel, and/or the center (C) channel) are not connected ought also be configured so that the sound signals of these specific channels can multiplex with video signals and reproduced by the speaker that belongs to the display device.
- specific channels for example, the front right (FR) channel and the front left (FL) channel, and/or the center (C) channel
- an OSD On Screen Display
- a visual message regarding the connected state of the speaker should be supplied to the user through this OSD circuit using a detection result by the detection circuit.
- This message ought also to include the information that indicates the incorrect connection of a speaker and the presence of the speaker connection, for example.
- an indication for visually judging the speaker under test ought also to be performed.
- FIG. 1 is a device block diagram showing an embodiment of the present invention
- FIG. 2 is a device block diagram showing another embodiment of the present invention.
- FIG. 3 is a device block diagram showing another embodiment of the present invention.
- FIG. 4 is a block diagram of a signal source and a switcher used in the present invention.
- FIG. 5 is another block diagram of the signal source and the switcher used in the present invention.
- FIG. 6 is a block diagram of a display unit used in the present invention.
- FIG. 7 is a drawing showing a display example in the display unit used in the present invention.
- FIG. 8 is another drawing showing the display example in the display unit used in the present invention.
- FIG. 9 is a device block diagram showing another embodiment of the present invention.
- FIG. 10 is a block diagram of the signal source and a built-in signal source switcher used in the present invention.
- FIG. 11 is another block diagram of the signal source and the switcher used in the present invention.
- FIG. 12 is another block diagram of the display unit used in the present invention.
- FIG. 1 is a device block diagram showing an embodiment of the present invention.
- the device of this embodiment has a display device 1 , a sound reproducing apparatus 2 , and a signal source 3 .
- the display device 1 and the sound reproducing apparatus 2 are mutually connected through an audiovideo signal transmission line 231 including a plug and play function.
- This transmission line may also be an interface with sound transmission line and video transmission line like DVI 1.0 (Digital Visual Interface version 1.0) established by the DDWG (Digital Display Working Group) that is the connection specification between a PC (Personal Computer) itself and a display device.
- the transmission line may also be an interface for multiplexing a digital video signal and a digital sound signal.
- the “plug and play function” allows a signal sending unit to grasp characteristic data of a signal receiving unit without personal assistance and to automatically send the optimum signal to the signal receiving unit when the signal sensing unit and the signal receiving unit are connected with a cable.
- the embodiment of the present invention is devised so that a speaker in a state in which it can function practically can be posted to an audiovideo signal source. Further, when a state of speaker connection changes, the embodiment is devised so that the audiovideo signal source can identify this state and the audio output suitable for a new state can be obtained even in operation.
- a switcher 201 measures the impedance of a load in each terminal to which speaker cables 220 to 225 are connected and detects the presence of speaker connection. Such a strict measurement is not necessary only for the presence, but even a method of providing a signal source having output impedance and roughly measuring a voltage that appears in a terminal is acceptable. Further, for example, because a sub woofer 210 is a special speaker that reproduces a low-pitched sound, it is designed to be different in internal impedance from another speaker. Otherwise, if high frequency impedance is reduced by connecting between input terminals using a capacitor, the type of the speaker as well as the presence of the connection can be judged and incorrect connection can be detected.
- the system of the present invention is characterized by having a display unit 101 , the detected speaker connection is shown in the display unit, and a warning can be indicated if there is an incorrect connection. Further, for example, although the RL (rear left) speaker is connected in the speakers at the rear side, the RR (rear right) speaker is not connected. At this occasion, this indication warns that RR speaker is not connected. Moreover, a message indicating that a signal in which the RL and RR speakers are added is output from the RL speaker side can also be posted.
- the layout drawing of a typical speaker is displayed on the display unit 101 and a test signal is sent to every speaker.
- a function that displays the speaker on the display unit such as blinking, and lets the user to check whether there is a conflict with a direction where a sound comes practically.
- EDID Extended Display Identification Data
- VESA Video Electronics Standards Association
- This EDID shows the specifications (a supportable horizontal frequency range and a pixel number) of a display device. That information about the connected state of the speaker is added to this EDID signal and posted to the audiovideo signal sources 301 , 302 .
- a switcher sends an EDID according to a request of an audiovideo signal source. If the switcher have detected a speaker previously,it sends the EDID which have been rewritten from the initial speaker arrangement to the practically connected speaker. Further, if the EDID has already been sent before the speaker is detected, the connection between the switcher 201 and the audiovideo signal sources 301 , 302 are disconnected once using a hot plug function and a new EDID is resent after the speaker is detected. For this purpose, the information whether the EDID has already been sent or not, may be also stored in a RAM (Random Access Memory) or such. Besides, the hot plug function originally indicates whether a sound reproducing apparatus and an audiovideo signal source are connected with a cable.
- the disconnection time should be approximately 0.5 to 2 seconds if accurate operation is taken into consideration.
- a device function is interrupted in this disconnection time. IF a hot plug line is prepared independently, a virtual disconnection which only hot plug line is disconnected and an audiovideo transmission line keep to connect, is available. This virtual disconnection technique provides seamless transmission of video and sound signals can also continue.
- an audiovideo signal source should be provided with a function of cyclically reading EDID every predetermined time, for example, approximately 0.5 to 2 seconds.
- the audiovideo transmission line 231 with a plug and play function is described.
- the case where neither FR speaker 211 or FL speaker 212 is connected nor found is taken into consideration with reference to the device block diagram of FIG. 2 .
- the speaker marked by oblique lines in the diagram is connected by a speaker cable.
- the speaker cables 221 , 222 are drawn by a dashed line in the diagram, and not connected as marked by an X mark. These two speakers 211 , 212 are indispensable for obtaining a sound field with a correct ambience.
- the switcher 201 when the aforementioned switcher 201 with an audio amplifier detects that these speakers are not connected, the switcher 201 sends sound signals for the FR and FL channels to the display unit 101 , thereby to reproduce a sound by a front-right speaker 111 and a front-left speaker 112 of the display unit.
- the switcher 201 can identify whether a speaker is connected to the display unit 101 or not by reading an EDID transmitted via the audiovideo transmission line 231 .
- the display unit 101 should have a function of detecting whether the aforementioned speaker is connected practically or not.
- the switcher 201 should send mute data or the sound signal whose level lowers rather than usual ought to be sent, or stop to send a sound signal to the display unit 101 .
- an OSD On Screen Display circuit for displaying a drawing and a character ought to be provided in the switcher 201 .
- the sound of the 5.1 channel can be reproduced using the speakers 111 , 112 of the display unit. Accordingly, when it is detected that the speakers 211 , 212 are not connected, the guidance as shown typically in FIG. 7 , on the display unit 101 may be useful.
- the switcher 201 sends a sound signal of the C channel and ought also to be able to reproduce a sound by the front-right speaker 111 and the front-left speaker 112 of the display unit or either of them. Accordingly, a sound field with an ample ambience can be obtained using the speaker of the display unit 101 .
- the sound of the 5.1 channel that uses the FR, FL, C, RR, RL, and S channels can be reproduced using a DVD.
- the sound of the 7.1 channel to which the two channels of the front right center (FRC) channel and the front left center (FLC) channel are added are assumed to be used. If the speakers of the FR and FL channels are connected, the sound of the 7.1 channel ought to be reproduced by using the speaker of the display unit that is easily located nearer to the center than these speakers in the FRC and FLC channels.
- the switcher 201 detects using the aforementioned method that the speaker of the 5.1 channel is connected.
- the switcher 201 detects an EDID transmitted via the audiovideo transmission line 231 and identifies that the speaker is connected to the display unit 101 . Further, when the sound signal of the 7.1 channel is sent from the audiovideo signal source 301 or 302 , the sound signals of the FRC and FLC channels among them are sent to the display unit 101 via the audiovideo transmission line 231 . Besides, when the signal of the 7.1 channel can be reproduced in the aforementioned manner, if the sound signal from the audiovideo signal source 301 or 302 belongs to the 5.1 channel, for example, the switcher 201 ought also to perform matrix operation and artificially produce the signals of the FRC and FLC channels, then send them to the display unit 101 .
- the sound signals supplied to these speakers can be sent by the audiovideo transmission line 231 together with video signals through this single transmission line. Accordingly, a speaker cable need not be drawn around every speaker and wiring is simplified.
- the sound is reproduced through the 5.1 channel using the speakers 111 , 112 as the main speakers together with the speakers 210 , 213 , 214 , 215 without using the speakers 211 , 212 .
- the sound is reproduced through the 5.1 channel using the speakers 211 to 215 assuming that the user connects the speaker 211 .
- the sound is reproduced through the 7.1 channel using the speakers 111 , 112 , 211 to 215 assuming that the user connects the speaker 211 .
- the sound can be reproduced in accordance with the selection of the user.
- menu display and menu selection are convenient because they also work as countermeasures for incorrect operation of a speaker connection detection circuit when they can start at an optional timing according to a user instruction, for example, using a remote controller as well as when the speaker connection detection circuit detects a change of speaker arrangement. Further, they ought also to be performed according to only the user instruction without providing a speaker connection detection circuit in a switcher.
- a gain for a sound signal differs between the display unit 101 and the switcher 201 with an audio amplifier, a correct ambience cannot be reproduced.
- the gain value is standardized and adjusted. In the present circumstances, however, this standard is not available, and this standardization is not easy especially between the devices of different manufacturers.
- a remote controller is usually placed near by the user, a method of incorporating a microphone in this remote controller, generating a sound by every speaker, detecting this sound, and controlling a gain so that an optimum balance can be obtained is assumed.
- a method of requesting the user for the optimum adjustment by generating a sound such as by issuing an instruction that indicates speaker arrangement in the display unit 101 and making the relevant speaker blink.
- the switcher 201 As to whether the power of the display unit 101 turns on or not, there is a method of detecting the retransmission of an EDID signal indicating speaker non-connection via the audiovideo transmission line 231 using a hot plug function and of detecting an operating state of an audiovideo input circuit of the display unit 101 by the switcher 201 via the audiovideo transmission line 231 .
- the switcher 201 identifies that the power of the display unit is or was disconnected, the switcher 201 ought also to convert a sound to the 5.1 channel by matrix operation and send it to the respective speakers 210 to 215 .
- a new EDID ought also to be sent and received.
- the audiovideo signal source 301 or 302 sends a sounds which is converted to the 5.1 channel. As a result, a sound that is always suitable for a speaker state can be reproduced.
- the switching that uses a hot plug function should estimate the time of approximately 0.5 to 2 seconds if the compatibility when a device of a different manufacturer is used is taken into consideration, and the device cannot function in the meantime. If both of the devices are machine types of the same manufacturer, the switching in a shorter time can be performed when it is confirmed that the devices are of the machine types corresponding to the hot plug operation in a short time. Because a internal control signal is sometimes sent in the vertical blanking period of a video signal, the disconnection time by the hot plug operation can be set below the conventional three frames (approximately 200 ms) by interlace scan even if an operation margin is taken into consideration. Accordingly, an effect that the disconnected time can be reduced is gained.
- a newly connected speaker can also function by operating the hot plug function according to a user instruction, loading a result from which the aforementioned speaker connection was detected newly on an EDID, and sending and receiving it between devices.
- FIG. 4 and FIG. 5 show the switcher 201 with an audio amplifier and the audiovideo signal source 301 (or 302 ) respectively, and FIG. 6 shows the display unit 101 .
- the audiovideo signal source 301 is composed of a video signal source 30101 , a sound signal source 30102 , a sound multiplex circuit 30103 , a transmitter 30104 , and a channel number control circuit 30105 .
- an audiovideo transmission line 331 with a plug and play function for connection with the switcher 201 is practically a single bundle cable, but divided into 331 A and 331 B and shown for convenience' sake of explanation.
- the video signal source 30101 sends video signal obtained from television broadcasting or a device, such as a DVD, to the sound multiplex circuit 30103 .
- the sound signal source 30102 sends sound signal accompanied by this video signal to the sound multiplex circuit 30103 in the same manner.
- a number of sound channel from the sound signal source 30102 is determined according to the instruction of the channel number control circuit 30105 . This number of sound channel may also be controlled by extracting the necessary number of sound channel from sound data contained in the television broadcasting or a device such as a DVD. Further, conversion of decreasing a number of sound channel as the need arises or conversion of increasing the mumber of sound channel by producing a signal artificially may also be performed.
- the instruction of this number of sound channel is determined with an EDID sent from the switcher 201 as described later.
- the video signal and sound signal multiplexed through the sound multiplex circuit 30103 are sent to the switcher 201 via the transmitter 30104 .
- the switcher 201 with an audio amplifier is composed of a switch 20101 , a receiving circuit 20102 , a sound separator 20103 , an adding circuit 20104 , an audio output circuit 20105 , a speaker connection detector 20106 , a controller 20107 , an OSD circuit 20108 , a first EDID generation circuit 20109 , a second EDID generation circuit 20110 , a switch 20111 , and a sound multiplex circuit 20112 .
- the audiovideo transmission line 231 with a plug and play function for connection with the display device 1 is practically a single bundle cable, but divided into two lines and shown for convenience' sake of explanation.
- the speaker cables 220 to 225 are independent in the same manner as FIG. 1 respectively.
- the signal sent from the audiovideo transmission line 331 A with a plug and play function to the switcher 201 with an audio amplifier is first assigned to the switch 20101 .
- This switch is used for the aforementioned plug and play function. For example, when an EDID is sent to post its own state between the devices at device power startup or when speaker connection is detected in operation and it is detected that the connection was changed, then the EDID is sent, the switch 20101 is opened once (approximately up to 2 seconds). The opening and closing timing is assigned from the controller 20107 . The switch is closed at normal use and an audiovideo signal is assigned to the receiving circuit 20102 . Besides, the open circuit of the switch 20101 is shown typically. If at least there is an open circuit or a level change in a hot plug terminal, the sending and receiving operation of the audiovideo signal can continue.
- a hot plug function may be realized a hot plug line independent from an audiovideo transmission line.
- a video signal and a sound signal are separated through the sound separator 20103 .
- the former is assigned to the adding circuit 20104 and the latter is assigned to the audio output circuit 20105 .
- a number of sound channel of the sound signal received practically is posted to the controller 20107 .
- the audio output circuit 20105 ought also to correspond to the 7.1 channel, for example, but, here, corresponds to the 5.1 channel in the same manner as FIG. 1 .
- the speaker connection detector 20106 is provided in the output of each channel and detects the presence of connection by measuring the impedance of a speaker connection terminal. In accordance with the result, the controller 20107 judges the number of sound channel of a sound most suitable for being reproduced and gives an instruction to the switch 20111 .
- An EDID that can specify the optimum sound channel is selected from the first EDID generation circuit 20109 and the second EDID generation circuit 20110 and sent to the audiovideo signal source 301 . Needless to say, EDID are not limited to 2 types, but multiple EDID ought also be selected. Multiple whole EDID data need not be provided, but only multiple EDID data regarding a a number of sound channel ought also be prepared and switched.
- the controller 20107 sends an instruction to the OSD circuit 20108 and generates a necessary display signal, then assigns the signal to the addition circuit 20104 .
- the signal is here added to or substituted for a video signal from the sound separator 20103 .
- display is being performed through the OSD circuit 20108 , if information that is currently being broadcast is received, this information ought also be overlapped and displayed as a background image.
- a reproduction image such as an image obtained from a DVD is transmitted, however, this reproduction operation ought also to stop temporarily.
- the output of the addition circuit 20104 is assigned to the sound multiplex circuit 20112 .
- the aforementioned controller 20107 gives an instruction to the sound multiplex circuit 20112 and multiplex a necessary 1- or 2-channel sound signal with a video signal, then sends it to the display device 1 .
- a sound signal selects only the C channel or the FR and FL channels in accordance with the connected speaker number of the display device 1 . Further, in the case of the 7.1 channel, the FRC and FLC channels may also be selected or the FRC and FLC channels may artificially be produced and sent from the sound signal of the 5.1 channel.
- FIG. 4 shows an example in which a signal is fetched in parallel from a part of speaker connection terminals and input to the sound multiplex circuit 20112 , but the output of the sound separator 20103 ought also be input directly to the sound multiplex circuit 20112 .
- the speaker connection terminal is mostly an analog signal, and, therefore, this terminal is advantageous when the sound separator 20103 and the sound multiplex circuit 20112 handle digital data.
- the output of the sound separator 20103 ought also to be input to the sound multiplex circuit 20112 via the sound selector 20205 .
- the controller 20107 determines an instruction to the aforementioned soundmultiplex circuit 20112 based on these means.
- FIG. 5 shows a block diagram in which the practical speaker connection is detected in the present invention, but a function of positively utilizing the speaker of the display device 1 is omitted.
- the soundmultiplex circuit 20112 is omitted (from FIG. 5 ) in comparison with FIG. 4 .
- FIG. 6 is a block diagram showing an embodiment of the display unit 101 in the present invention. Because the configuration of FIG. 6 is the same as the switcher 201 of FIG. 4 and FIG. 5 except that a display portion 10112 is provided and a sound signal is assigned to two speakers 111 , 112 , a detailed explanation is omitted.
- FIG. 6 is characterized by having a speaker connection detection circuit 10106 for detecting whether the speaker having the display unit 101 is connected practically and being capable of receiving the optimum sound signal as described previously by sending the result to a control circuit and generating an EDID that posts a practically connected state to the switcher 201 .
- the configuration of FIG. 6 is the same as the aforementioned switcher 201 regarding that a switch 10101 for a plug and play function is provided and the EDID signal generation circuit is not limited to two.
- the EDID signal generation circuit consists of a RAM (random access memory) or a flash RAM and the contents are rewritten by a control circuit composed of a CPU and such, a single generation circuit can further generate many types of signals.
- FIG. 9 the switcher 201 with an audio amplifier of FIG. 1 is divided into another component, such as an audio amplifier 202 and a switcher 203 , in FIG. 9 .
- the audiovideo transmission line 231 with a plug and play that supplies a signal to the display unit 101 if this line is connected to the switcher 203 , the same operation as FIG. 1 is enabled.
- the speakers 210 to 215 are connected to the audio amplifier 202 via the speaker cables 220 to 225 in the same manner as FIG. 1 .
- the switcher 203 has a function of allocating a signal from the audiovideo signal sources 301 , 302 .
- the switcher not only sends a video signal to the display unit 101 , but also, as shown in the embodiment in which each channel of a sound signal is described previously, is divided into the audio amplifier 202 and the display unit 101 and sent in accordance with the practically connected state of the speaker.
- Operation varies with whether a sound transmission line 232 to which the audio amplifier 202 and the switcher 203 are connected has a plug and play function or not.
- this function is newly implemented between the audio amplifier 202 and the switcher 203 .
- Another function is the same as FIG. 1 .
- the user posts the speaker connected to the audio amplifier 202 practically to a device. For example, a method of inputting a channel that is connected using a remote controller or changing a display unit into a touch panel type one, issuing an indication as shown in FIG. 2 , and entering data by touching the mark of the connected speaker is assumed.
- FIG. 10 is a device block diagram of FIG. 10 .
- an audiovideo signal source such as a DVD, an STB and so on
- 20201 is a video signal source
- 20202 is a sound signal source
- 20203 is a video signal selector
- 20204 is a sound signal selector
- 20205 is a sound selector
- 20106 is an EDID-RAM.
- the same component as shown in FIG. 4 is shown assigning the same number to it.
- the EDID-RAM 20206 is used, but, as described in the explanation of FIG. 4 , the same operation as the case where the multiple EDIDs of FIG. 4 are switched is performed. Further, the sound selector 20205 is provided. A sound signal transmitted from the output of the sound separator 20103 to the display device 1 is extracted and sent to the sound multiplex circuit 20112 . Basically, however, the operation is the same operation as FIG. 4 . Because the same operation as FIG. 4 is performed to the external signal source 301 in particular, an explanation of operation is omitted.
- a controller 20107 directly controls (not shown) the sound signal source 20202 and sets the optimum a number of sound channel of a sound to be reproduced. Because another operation is the same operation as the external signal source 301 , it is omitted.
- FIG. 11 a headphone terminal is provided in the switcher 201 with an audio amplifier of FIG. 1 .
- 226 is a headphone cable that connects the headphone terminal (not shown) and the headphone of the switcher 201 and 20207 is a headphone detector.
- the same component as shown in FIG. 10 is shown assigning the same number to it. The basic operation is omitted because it is the same as FIG. 10 , and only the headphone connection operation is described below.
- the headphone detector 20207 detects the connection of the headphone by opening and closing a mechanical contact or detecting the impedance detection of the headphone.
- a headphone detection signal is input to the audio output circuit 20105 and the sound selector 20205 and stops (mutes) the audio output to the speaker cables 220 to 225 and the audio output to the sound multiplex circuit 20112 . Consequently, the audio output of the speaker connected to the switcher 201 and all the speakers connected to the display device 1 can be stopped.
- a number of sound channel of a sound to be reproduced such as the connected headphone is stereophonic or monaural, is decreased.
- the change of this number of sound channel rewrites the speaker arrangement information of the EDID-RAM 20206 via the controller 20107 and is posted to the signal source 301 using the hot plug function of the switch 20101 .
- the signal source 301 outputs sound data suitable for a headphone.
- a headphone terminal is provided in the display unit 101 of FIG. 1 .
- 123 is a headphone cable to which the headphone terminal (not shown) and the headphone of the display unit 101 are connected.
- Numeral 10113 is a headphone detection circuit and 10114 is an EDID-RAM.
- the part in which the EDID- 1 and EDID- 2 of FIG. 6 are switched by the switch 10111 is substituted for the EDID-RAM in the same manner as the example of FIG. 10 .
- even the same component as shown in FIG. 6 is shown assigning the same number to it. The basic operation is omitted because it is the same as FIG. 6 , and only the headphone connection operation is described below.
- the headphone detection circuit 10113 detects the connection of the headphone by opening and closing a mechanical contact or detecting the impedance of the headphone.
- a headphone detection signal is input to the audio output circuit 20105 and the sound selection circuit 10105 and stops (mutes) the audio output to the speaker cables 121 , 122 . Consequently, the audio output of the speaker connected to the display unit 101 can be stopped.
- a sound reproduction function is added by connecting the headphone.
- This change rewrites the speaker arrangement information of the EDID-RAM 10114 via control 10107 and is posted to a sound processing unit (not shown) , such as an audio output unit and a switcher, using the hot plug function of the switch 20101 .
- a display unit receives sound data suitable for a headphone and a sound is reproduced by the headphone.
- the sound processing unit connected to the audiovideo transmission line 231 with a plug and play function is an audio amplifier to which speakers are connected, the audio output of these speakers need to be stopped at the same time. Accordingly, the speaker arrangement information of the aforementioned EDID-RAM can be posted to the audio amplifier when it is rewritten.
- a speaker can be muted by directly controlling an audio amplifier.
- the method of jointly using the control line and the remote controller is effective when a stereophonic speaker cannot be distinguished from a stereophonic headphone.
- the speaker arrangement of the EDID-RAM is identical when the stereophonic speaker is connected to the display unit 101 .
- the switcher 201 is separated from the audiovideo signal source 301 or 302 or the display device 1 , but even the configuration in which the audiovideo signal source 301 or 302 or the display device 1 is incorporated in the switcher 201 ought to be acceptable.
- the configuration in which connection information is sent from the switcher 201 to the audiovideo signal source 301 or 302 is omitted, but the configuration of number of sound channel control that corresponds to the detected connected state is identical with that of the aforementioned embodiment.
- Program information is used to display an electronic program guide on a display. This program usually indicates a schedule of a program in the future of each channel. Further, program information includes a program title, a name (number of sound channel) of a broadcasting station, broadcasting start and end times of a program, types (movie, news, and drama) of the program, and data regarding the number of sound channel of a sound reproduced in the program.
- the broadcasting signal of news program usually has the sound signal of the 2 channel.
- the broadcasting signal of movie and music program often have the sound signal of the 5.1 channel or 7.1 channel. Accordingly, the data indicating that the number of sound channel is the 2 channel may be added to the broadcasting signal of news, and the data indicating that the number of sound channel is 5.1 channel or 7.1 channel may be added to the broadcasting signals of movie and music programs.
- the sound signal source 30102 ought also be controlled in a channel number control circuit by extracting program information from the broadcasting signal of the program selected by the user in accordance with the data of the number of sound channel contained in the extracted program information. Accordingly, when a news program is selected and the data indicating that the number of sound channel is the 2 channel is added to the broadcasting signal, a sound is reproduced through the 2 channel even if a device is provided with the speaker of the 5.1 channel. On the other hand, when a movie program is selected and the data indicating that the number of sound channel is the 2 channel is added to the broadcasting signal, and the device is provided with the speaker of the 5.1 channel, the sound is reproduced by utilizing all speakers. Such configuration can realize automatic control of the number of sound channel in accordance with the contents of the program.
- the program with 2 channel audio signal is indicated as a “movie” program information which the program contains, the program can be reproduced artificially through the 5.1 channel.
- the program with 7.1 channel audio signal is Indicated as “news” in a program information in which the program contains, the program can be reproduced artificially through the 2 channel. That is, this embodiment is characterized by using the data of the program type more preferentially than the number of sound channel data contained in program information as data for determining a number of sound channel of a sound to be reproduced.
- the audiovideo signal source 301 including a receiver of a television broadcasting signal reproduces a sound through the 5.1 channel or 7.1 channel when the program information indicates a “movie”.
- the source 301 reproduces a sound through the 2 channel when the program information indicates “news”.
- a table is constructed by presetting the data of the appropriate number of sound channel of a sound to be reproduced every program type.
- the data table is used to set the number of sound channel of a sound to be reproduced.
- the aforementioned table can be stored in a microcomputer memory or another memory that is not shown.
- the audiovideo signal source 301 (built-in microcomputer) extracts program information from the received television broadcasting signal and judges the contents of the data of a program type contained in the program information.
- the judgment result is referred to with the table stored in the aforementioned memory and the microcomputer reads the data of a number of sound channel of a sound to be reproduced that corresponds to the judged program type from the aforementioned memory.
- the program sound number of sound channel control circuit controls the sound signal source 30102 and controls the number of sound channel of the sound to be reproduced.
- Such configuration can reproduce a sound in appropriate number of sound channel in accordance with a program type.
- the user ought to be able to select permission/prohibition.
- a multiple-channel sound signal can suitably be reproduced in accordance with a connected state of a speaker. Further, besides the speaker connected to a switcher and such, the speaker of a display device can be used jointly and a higher sound effect can be obtained. Further, because the connected state of the speakers are displayed on the display device, an user would easily and accurately connects the speakers.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
- Television Receiver Circuits (AREA)
- Stereophonic Arrangements (AREA)
Abstract
The present invention identifies practical speaker connection using a device having a sound channel of a 5.1 channel or 7.1 channel, and provides the device that can easily reproduce the optimum multiple channels. The present invention can identify actual speaker arrangement by for example, measuring the impedance of a terminal at the side of an audio amplifier. If incorrect connection is found, a warning is issued. This information is transmitted to a signal source with an EDID and a signal with the optimum a number of sound channel is sent. The EDID is also used for the connection with a display unit and the speaker connection with which the display unit is provided uniquely. For example, a sound through the 7.1 channel is easily reproduced using the speaker of the display unit in the channel of the front speaker.
Description
- 1. Field of the Invention
- The present invention relates to an art for clearly reproducing sound signals of multiple channels (for example, 5.1 channel and 7.1 channel) obtained from television broadcasting or a storage device, such as a VCR (Video Cassete Recorder), a DVD (Digital Versatile Disc), and a hard disc recorder. The present invention is especially applied to a broadcasting receiving unit (hereinafter referred to as an STB (set-top-box)) that receives the television broadcasting and outputs a sound signal and a video signal, a sound signal source (needless to say, the video signal can also be output), a sound processing unit, such as a switcher, for processing a signal from this sound signal source and distributing the signal to multiple speakers, or a display device, such as a television receiver.
- In the television broadcasting and package media, such as movie software products, the digitalization of video and sound signals is advancing. The realization of multiple channels in a digital sound signal advances. For example, in some DVD sounds, what is called, a sound of the 5.1 channel in which five channels of the front left (FL), the front right (FR), the center (C), the rear left (RL), and the rear right (RR) and a sub woofer (S) for reproducing a low-pitched sound are combined can be reproduced. Further, a sound of the 7.1 channel including the front left center (FLC) and the front right center (FRC) is also reproduced.
- When the realization of multiple channels of a sound signal advances in this manner, the connection of a speaker cable becomes complicated and there is a possibility of incorrect connection. As a first prior art for simplifying the connection work of many speakers, for example, the art described in Japanese Patent Laid-Open No. 2001-25085 is generally known. It is disclosed in this literature that when a speaker of the 5.1 channel is connected, the arrangement of the speaker is judged with a test signal output from the speaker, and inappropriate arrangement and connection are posted if they are found, and at the same time the connection with the speaker is switched by an audio amplifier.
- As a second prior art, for example, the art described in Japanese Patent Laid-Open No. H10 (1998)-94086 is known. It is disclosed in this literature that a terminal not connected to a speaker is detected and a sound signal to be supplied to the speaker is allocated to another speaker.
- In the aforementioned first prior art, however, a method of automatically taking action only by a warning indication was not suggested when some speakers are not connected to a sound signal processing unit. For example, even if a switcher with an audio amplifier that is one of sound signal processing units corresponds to a 5.1 channel, there is a possibility of a sound effect becoming unsatisfactory when the user does not perform appropriate processing.
- In a second prior art, processing is performed automatically, and a manual instruction for sound processing is not required. In the second prior art, however, sound signal allocation processing is performed only in the audio amplifier. Accordingly, for example, even when a sound signal source connected to an audio amplifier cannot identify a speaker number connected to the audio amplifier, and when multiple sound signals such as a stereophonic sound system and the 5.1 channel can be supplied, an appropriate sound signal cannot be supplied.
- Further, it was not taken into consideration in the aforementioned first and second prior arts that even a speaker originally installed in a display device, such as a television receiver, is utilized, and a display unit of a display device is utilized when the speaker is connected.
- The present invention is made in consideration of the aforementioned problems. An object of the present invention is to provide an art for transmitting a connected state of a speaker connected to a sound processing unit to a sound signal source and requesting sound data suitable for the connected state, and enabling the reproduction of a sound suitably. Further, the present invention provides an art that enables the reproduction of more excellent sound by utilizing even a speaker installed in a display device. Moreover, the present invention provides such an art that can easily check the connection of a complicated multi-channel speaker utilizing the display unit of the display device.
- To achieve the aforementioned object, the present invention is provided with a detection circuit that detects a connected state of a speaker for each output terminal of a sound signal that corresponds to multiple sound channels and a control circuit for sending information about the connected state of the speaker, for example, to a sound signal source, such as an STB, in a sound signal processing unit, such as a switcher unit. The configuration of this sound processing unit can also be provided in a display device, such as a television receiver.
- The sound signal source receives the information about the connected state of the aforementioned speaker and controls a number of sound channel supplied to the sound processing unit based on the input information.
- Specifically, the aforementioned sound processing unit, if it is detected by the aforementioned detection circuit that the speakers of specific channels (for example, the front right (FR) channel and the front left (FL) channel, and/or the center (C) channel) are not connected ought also be configured so that the sound signals of these specific channels can multiplex with video signals and reproduced by the speaker that belongs to the display device.
- Further, to connect a speaker, it is desirable that an OSD (On Screen Display) circuit is provided, and a visual message regarding the connected state of the speaker should be supplied to the user through this OSD circuit using a detection result by the detection circuit. This message ought also to include the information that indicates the incorrect connection of a speaker and the presence of the speaker connection, for example. Further, to display the arrangement of the speaker by the aforementioned OSD circuit and issue a test sound signal to each speaker, an indication for visually judging the speaker under test ought also to be performed.
-
FIG. 1 is a device block diagram showing an embodiment of the present invention; -
FIG. 2 is a device block diagram showing another embodiment of the present invention; -
FIG. 3 is a device block diagram showing another embodiment of the present invention; -
FIG. 4 is a block diagram of a signal source and a switcher used in the present invention; -
FIG. 5 is another block diagram of the signal source and the switcher used in the present invention; -
FIG. 6 is a block diagram of a display unit used in the present invention; -
FIG. 7 is a drawing showing a display example in the display unit used in the present invention; -
FIG. 8 is another drawing showing the display example in the display unit used in the present invention; -
FIG. 9 is a device block diagram showing another embodiment of the present invention; -
FIG. 10 is a block diagram of the signal source and a built-in signal source switcher used in the present invention; -
FIG. 11 is another block diagram of the signal source and the switcher used in the present invention; and -
FIG. 12 is another block diagram of the display unit used in the present invention. - Embodiments of the present invention are described below with reference to the drawings.
FIG. 1 is a device block diagram showing an embodiment of the present invention. The device of this embodiment has adisplay device 1, asound reproducing apparatus 2, and asignal source 3. Thedisplay device 1 and thesound reproducing apparatus 2 are mutually connected through an audiovideosignal transmission line 231 including a plug and play function. This transmission line may also be an interface with sound transmission line and video transmission line like DVI 1.0 (Digital Visual Interface version 1.0) established by the DDWG (Digital Display Working Group) that is the connection specification between a PC (Personal Computer) itself and a display device. Further, the transmission line may also be an interface for multiplexing a digital video signal and a digital sound signal. - Besides, in the following explanation of this embodiment, the “plug and play function” allows a signal sending unit to grasp characteristic data of a signal receiving unit without personal assistance and to automatically send the optimum signal to the signal receiving unit when the signal sensing unit and the signal receiving unit are connected with a cable.
- The embodiment of the present invention is devised so that a speaker in a state in which it can function practically can be posted to an audiovideo signal source. Further, when a state of speaker connection changes, the embodiment is devised so that the audiovideo signal source can identify this state and the audio output suitable for a new state can be obtained even in operation.
- First, a
switcher 201 measures the impedance of a load in each terminal to whichspeaker cables 220 to 225 are connected and detects the presence of speaker connection. Such a strict measurement is not necessary only for the presence, but even a method of providing a signal source having output impedance and roughly measuring a voltage that appears in a terminal is acceptable. Further, for example, because asub woofer 210 is a special speaker that reproduces a low-pitched sound, it is designed to be different in internal impedance from another speaker. Otherwise, if high frequency impedance is reduced by connecting between input terminals using a capacitor, the type of the speaker as well as the presence of the connection can be judged and incorrect connection can be detected. - Besides, as described later, because the system of the present invention is characterized by having a
display unit 101, the detected speaker connection is shown in the display unit, and a warning can be indicated if there is an incorrect connection. Further, for example, although the RL (rear left) speaker is connected in the speakers at the rear side, the RR (rear right) speaker is not connected. At this occasion, this indication warns that RR speaker is not connected. Moreover, a message indicating that a signal in which the RL and RR speakers are added is output from the RL speaker side can also be posted. - Further, for example, when a speaker is connected to the 5.1 channel, the layout drawing of a typical speaker is displayed on the
display unit 101 and a test signal is sent to every speaker. Simultaneously, even the layout error of the speaker can simply be identified by having a function that displays the speaker on the display unit, such as blinking, and lets the user to check whether there is a conflict with a direction where a sound comes practically. - Subsequently, after a speaker to which the
switcher 201 is connected practically is detected, the configuration for posting this speaker toaudiovideo signal sources audiovideo signal sources - A switcher sends an EDID according to a request of an audiovideo signal source. If the switcher have detected a speaker previously,it sends the EDID which have been rewritten from the initial speaker arrangement to the practically connected speaker. Further, if the EDID has already been sent before the speaker is detected, the connection between the
switcher 201 and theaudiovideo signal sources - Against the case where there is no hot plug function, it is still more convenient that an audiovideo signal source should be provided with a function of cyclically reading EDID every predetermined time, for example, approximately 0.5 to 2 seconds.
- Subsequently, the
audiovideo transmission line 231 with a plug and play function is described. The case where neitherFR speaker 211 orFL speaker 212 is connected nor found is taken into consideration with reference to the device block diagram ofFIG. 2 . The speaker marked by oblique lines in the diagram is connected by a speaker cable. Thespeaker cables speakers aforementioned switcher 201 with an audio amplifier detects that these speakers are not connected, theswitcher 201 sends sound signals for the FR and FL channels to thedisplay unit 101, thereby to reproduce a sound by a front-right speaker 111 and a front-leftspeaker 112 of the display unit. - This can eliminate defects caused by missing the front main speakers. The
switcher 201 can identify whether a speaker is connected to thedisplay unit 101 or not by reading an EDID transmitted via theaudiovideo transmission line 231. For that purpose, Thedisplay unit 101 should have a function of detecting whether the aforementioned speaker is connected practically or not. Besides, when theFR speaker 211 and theFL speaker 212 are connected, the front-right speaker 111 and the front-leftspeaker 112 of the display unit need not be used. In this case, theswitcher 201 should send mute data or the sound signal whose level lowers rather than usual ought to be sent, or stop to send a sound signal to thedisplay unit 101. - Further, as described previously, it is easily understood for the user to display the layout drawing of the speaker shown in
FIG. 2 in thedisplay unit 101 at device startup and display the presence of each speaker connection. For this purpose, an OSD (On Screen Display) circuit for displaying a drawing and a character ought to be provided in theswitcher 201. - In the example of
FIG. 2 , if a sound of the 5.1 channel is generated from theaudiovideo signal source speakers speakers FIG. 7 , on thedisplay unit 101 may be useful. - Even if the
speakers central speaker 210 of the C channel is not connected, theswitcher 201 sends a sound signal of the C channel and ought also to be able to reproduce a sound by the front-right speaker 111 and the front-leftspeaker 112 of the display unit or either of them. Accordingly, a sound field with an ample ambience can be obtained using the speaker of thedisplay unit 101. - At present, the sound of the 5.1 channel that uses the FR, FL, C, RR, RL, and S channels can be reproduced using a DVD. In the future, however, to increase the ambience, the sound of the 7.1 channel to which the two channels of the front right center (FRC) channel and the front left center (FLC) channel are added are assumed to be used. If the speakers of the FR and FL channels are connected, the sound of the 7.1 channel ought to be reproduced by using the speaker of the display unit that is easily located nearer to the center than these speakers in the FRC and FLC channels. The
switcher 201 detects using the aforementioned method that the speaker of the 5.1 channel is connected. Further, theswitcher 201 detects an EDID transmitted via theaudiovideo transmission line 231 and identifies that the speaker is connected to thedisplay unit 101. Further, when the sound signal of the 7.1 channel is sent from theaudiovideo signal source display unit 101 via theaudiovideo transmission line 231. Besides, when the signal of the 7.1 channel can be reproduced in the aforementioned manner, if the sound signal from theaudiovideo signal source switcher 201 ought also to perform matrix operation and artificially produce the signals of the FRC and FLC channels, then send them to thedisplay unit 101. - Besides, when the
speakers aforementioned display unit 101 are utilized, the sound signals supplied to these speakers can be sent by theaudiovideo transmission line 231 together with video signals through this single transmission line. Accordingly, a speaker cable need not be drawn around every speaker and wiring is simplified. - Subsequently, the case where only the
speaker 211 of the FR channel is not connected is taken into consideration with reference to the device block diagram ofFIG. 3 . Needless to say, a sound field with a normal ambience is not obtained as it is. At this occasion, after theswitcher 201 detects that thespeaker 211 is not connected, the menu shown typically inFIG. 8 ought also to be displayed. The user selects a number in the drawing, using a remote controller, for example. InFIG. 8 , when 1 is selected, a sound is reproduced by a 2-channel stereophonic sound system using thespeakers speakers speakers speakers speakers 211 to 215 assuming that the user connects thespeaker 211. Further, when 4 is selected, the sound is reproduced through the 7.1 channel using thespeakers speaker 211. The sound can be reproduced in accordance with the selection of the user. - These menu display and menu selection are convenient because they also work as countermeasures for incorrect operation of a speaker connection detection circuit when they can start at an optional timing according to a user instruction, for example, using a remote controller as well as when the speaker connection detection circuit detects a change of speaker arrangement. Further, they ought also to be performed according to only the user instruction without providing a speaker connection detection circuit in a switcher.
- If a gain for a sound signal differs between the
display unit 101 and theswitcher 201 with an audio amplifier, a correct ambience cannot be reproduced. For this purpose, it is assumed that the gain value is standardized and adjusted. In the present circumstances, however, this standard is not available, and this standardization is not easy especially between the devices of different manufacturers. Because a remote controller is usually placed near by the user, a method of incorporating a microphone in this remote controller, generating a sound by every speaker, detecting this sound, and controlling a gain so that an optimum balance can be obtained is assumed. Further, there is also a method of requesting the user for the optimum adjustment by generating a sound, such as by issuing an instruction that indicates speaker arrangement in thedisplay unit 101 and making the relevant speaker blink. Further, there is also a method of estimating the speaker arrangement by operating the speaker other than a speaker to be tested as microphone. - For example, when the sound of the 7.1 channel is reproduced using the
speakers display unit 101 is disconnected halfway in a program consisted of only music. In this case, a a number of sound channel to be output ought to be switched so that the sound of the 7.1 channel can be reproduced when the power of thedisplay unit 101 turns on and the sound of the 5.1 channel can be reproduced when the power turns off. As to whether the power of thedisplay unit 101 turns on or not, there is a method of detecting the retransmission of an EDID signal indicating speaker non-connection via theaudiovideo transmission line 231 using a hot plug function and of detecting an operating state of an audiovideo input circuit of thedisplay unit 101 by theswitcher 201 via theaudiovideo transmission line 231. When theswitcher 201 identifies that the power of the display unit is or was disconnected, theswitcher 201 ought also to convert a sound to the 5.1 channel by matrix operation and send it to therespective speakers 210 to 215. Further, after the connection between theaudiovideo signal source switcher 201 is disconnected once using the aforementioned hot plug function, a new EDID ought also to be sent and received. Theaudiovideo signal source - Besides, desirably, the switching that uses a hot plug function should estimate the time of approximately 0.5 to 2 seconds if the compatibility when a device of a different manufacturer is used is taken into consideration, and the device cannot function in the meantime. If both of the devices are machine types of the same manufacturer, the switching in a shorter time can be performed when it is confirmed that the devices are of the machine types corresponding to the hot plug operation in a short time. Because a internal control signal is sometimes sent in the vertical blanking period of a video signal, the disconnection time by the hot plug operation can be set below the conventional three frames (approximately 200 ms) by interlace scan even if an operation margin is taken into consideration. Accordingly, an effect that the disconnected time can be reduced is gained.
- Further, when a speaker is connected after starting to reproduce sounds, a sound cannot be reproduced from the relevant speaker as is. A newly connected speaker can also function by operating the hot plug function according to a user instruction, loading a result from which the aforementioned speaker connection was detected newly on an EDID, and sending and receiving it between devices.
- The block diagram of each component for realizing the aforementioned item is described with reference to
FIG. 4 ,FIG. 5 , andFIG. 6 .FIG. 4 andFIG. 5 show theswitcher 201 with an audio amplifier and the audiovideo signal source 301 (or 302) respectively, andFIG. 6 shows thedisplay unit 101. - First, the details are described with reference to
FIG. 4 . Theaudiovideo signal source 301 is composed of avideo signal source 30101, asound signal source 30102, asound multiplex circuit 30103, atransmitter 30104, and a channelnumber control circuit 30105. Besides, anaudiovideo transmission line 331 with a plug and play function for connection with theswitcher 201 is practically a single bundle cable, but divided into 331A and 331B and shown for convenience' sake of explanation. - The
video signal source 30101 sends video signal obtained from television broadcasting or a device, such as a DVD, to thesound multiplex circuit 30103. Thesound signal source 30102 sends sound signal accompanied by this video signal to thesound multiplex circuit 30103 in the same manner. A number of sound channel from thesound signal source 30102 is determined according to the instruction of the channelnumber control circuit 30105. This number of sound channel may also be controlled by extracting the necessary number of sound channel from sound data contained in the television broadcasting or a device such as a DVD. Further, conversion of decreasing a number of sound channel as the need arises or conversion of increasing the mumber of sound channel by producing a signal artificially may also be performed. The instruction of this number of sound channel is determined with an EDID sent from theswitcher 201 as described later. The video signal and sound signal multiplexed through thesound multiplex circuit 30103 are sent to theswitcher 201 via thetransmitter 30104. - Subsequently, the
switcher 201 with an audio amplifier is composed of aswitch 20101, a receivingcircuit 20102, asound separator 20103, an addingcircuit 20104, anaudio output circuit 20105, aspeaker connection detector 20106, acontroller 20107, anOSD circuit 20108, a firstEDID generation circuit 20109, a secondEDID generation circuit 20110, aswitch 20111, and asound multiplex circuit 20112. Further, theaudiovideo transmission line 231 with a plug and play function for connection with thedisplay device 1 is practically a single bundle cable, but divided into two lines and shown for convenience' sake of explanation. Thespeaker cables 220 to 225 are independent in the same manner asFIG. 1 respectively. - The signal sent from the
audiovideo transmission line 331A with a plug and play function to theswitcher 201 with an audio amplifier is first assigned to theswitch 20101. This switch is used for the aforementioned plug and play function. For example, when an EDID is sent to post its own state between the devices at device power startup or when speaker connection is detected in operation and it is detected that the connection was changed, then the EDID is sent, theswitch 20101 is opened once (approximately up to 2 seconds). The opening and closing timing is assigned from thecontroller 20107. The switch is closed at normal use and an audiovideo signal is assigned to the receivingcircuit 20102. Besides, the open circuit of theswitch 20101 is shown typically. If at least there is an open circuit or a level change in a hot plug terminal, the sending and receiving operation of the audiovideo signal can continue. A hot plug function may be realized a hot plug line independent from an audiovideo transmission line. - Subsequently, a video signal and a sound signal are separated through the
sound separator 20103. The former is assigned to the addingcircuit 20104 and the latter is assigned to theaudio output circuit 20105. Further, a number of sound channel of the sound signal received practically is posted to thecontroller 20107. Theaudio output circuit 20105 ought also to correspond to the 7.1 channel, for example, but, here, corresponds to the 5.1 channel in the same manner asFIG. 1 . - The
speaker connection detector 20106 according to the present invention is provided in the output of each channel and detects the presence of connection by measuring the impedance of a speaker connection terminal. In accordance with the result, thecontroller 20107 judges the number of sound channel of a sound most suitable for being reproduced and gives an instruction to theswitch 20111. An EDID that can specify the optimum sound channel is selected from the firstEDID generation circuit 20109 and the secondEDID generation circuit 20110 and sent to theaudiovideo signal source 301. Needless to say, EDID are not limited to 2 types, but multiple EDID ought also be selected. Multiple whole EDID data need not be provided, but only multiple EDID data regarding a a number of sound channel ought also be prepared and switched. - Further, to display the characters as shown previously in
FIG. 7 andFIG. 8 and display the connection drawing as shown inFIG. 2 andFIG. 3 , thecontroller 20107 sends an instruction to theOSD circuit 20108 and generates a necessary display signal, then assigns the signal to theaddition circuit 20104. The signal is here added to or substituted for a video signal from thesound separator 20103. Besides, while display is being performed through theOSD circuit 20108, if information that is currently being broadcast is received, this information ought also be overlapped and displayed as a background image. When a reproduction image, such as an image obtained from a DVD is transmitted, however, this reproduction operation ought also to stop temporarily. The output of theaddition circuit 20104 is assigned to thesound multiplex circuit 20112. - To reproduce a sound using the
speakers display device 1 as shown in the embodiments ofFIG. 2 andFIG. 3 , theaforementioned controller 20107 gives an instruction to thesound multiplex circuit 20112 and multiplex a necessary 1- or 2-channel sound signal with a video signal, then sends it to thedisplay device 1. A sound signal selects only the C channel or the FR and FL channels in accordance with the connected speaker number of thedisplay device 1. Further, in the case of the 7.1 channel, the FRC and FLC channels may also be selected or the FRC and FLC channels may artificially be produced and sent from the sound signal of the 5.1 channel. -
FIG. 4 shows an example in which a signal is fetched in parallel from a part of speaker connection terminals and input to thesound multiplex circuit 20112, but the output of thesound separator 20103 ought also be input directly to thesound multiplex circuit 20112. The speaker connection terminal is mostly an analog signal, and, therefore, this terminal is advantageous when thesound separator 20103 and thesound multiplex circuit 20112 handle digital data. InFIG. 10 described later, the output of thesound separator 20103 ought also to be input to thesound multiplex circuit 20112 via thesound selector 20205. - Besides, whether the speaker of the
display device 1 is connected practically or not is transmitted to thecontroller 20107 as EDID by similar means on the side of thedisplay device 1 as described later. Thecontroller 20107 determines an instruction to theaforementioned soundmultiplex circuit 20112 based on these means. -
FIG. 5 shows a block diagram in which the practical speaker connection is detected in the present invention, but a function of positively utilizing the speaker of thedisplay device 1 is omitted. Thesoundmultiplex circuit 20112 is omitted (fromFIG. 5 ) in comparison withFIG. 4 . -
FIG. 6 is a block diagram showing an embodiment of thedisplay unit 101 in the present invention. Because the configuration ofFIG. 6 is the same as theswitcher 201 ofFIG. 4 andFIG. 5 except that adisplay portion 10112 is provided and a sound signal is assigned to twospeakers FIG. 6 is characterized by having a speakerconnection detection circuit 10106 for detecting whether the speaker having thedisplay unit 101 is connected practically and being capable of receiving the optimum sound signal as described previously by sending the result to a control circuit and generating an EDID that posts a practically connected state to theswitcher 201. The configuration ofFIG. 6 is the same as theaforementioned switcher 201 regarding that aswitch 10101 for a plug and play function is provided and the EDID signal generation circuit is not limited to two. - In the aforementioned explanation, as illustrated as an EDID-
RAM 20206 inFIG. 10 described later, if the EDID signal generation circuit consists of a RAM (random access memory) or a flash RAM and the contents are rewritten by a control circuit composed of a CPU and such, a single generation circuit can further generate many types of signals. - Subsequently, another embodiment of the present invention is described with reference to the device block diagram of
FIG. 9 . The point that differs fromFIG. 1 is that theswitcher 201 with an audio amplifier ofFIG. 1 is divided into another component, such as anaudio amplifier 202 and aswitcher 203, inFIG. 9 . In this case, regarding theaudiovideo transmission line 231 with a plug and play that supplies a signal to thedisplay unit 101, if this line is connected to theswitcher 203, the same operation asFIG. 1 is enabled. Further, thespeakers 210 to 215 are connected to theaudio amplifier 202 via thespeaker cables 220 to 225 in the same manner asFIG. 1 . Accordingly, theswitcher 203 has a function of allocating a signal from theaudiovideo signal sources display unit 101, but also, as shown in the embodiment in which each channel of a sound signal is described previously, is divided into theaudio amplifier 202 and thedisplay unit 101 and sent in accordance with the practically connected state of the speaker. - Operation varies with whether a
sound transmission line 232 to which theaudio amplifier 202 and theswitcher 203 are connected has a plug and play function or not. First, when a function is provided, this function is newly implemented between theaudio amplifier 202 and theswitcher 203. Another function is the same asFIG. 1 . On the other hand, if the function is not provided, the user posts the speaker connected to theaudio amplifier 202 practically to a device. For example, a method of inputting a channel that is connected using a remote controller or changing a display unit into a touch panel type one, issuing an indication as shown inFIG. 2 , and entering data by touching the mark of the connected speaker is assumed. - Besides, in each embodiment, the case where there are two speakers having the
display unit 101 is described as an example. Even if one or three speakers are provided, the present invention can apply to them, and multiple-channel sound reproduction can be realized using these speakers in the same concept as the description of the present invention. - Subsequently, another embodiment of the present invention is described with reference of the device block diagram of
FIG. 10 . The case where an audiovideo signal source, such as a DVD, an STB and so on, are incorporated in theswitcher 201 with an audio amplifier ofFIG. 1 is assumed. InFIG. 10, 20201 is a video signal source, 20202 is a sound signal source, 20203 is a video signal selector, 20204 is a sound signal selector, 20205 is a sound selector, and 20106 is an EDID-RAM. The same component as shown inFIG. 4 is shown assigning the same number to it. - In
FIG. 10 , the EDID-RAM 20206 is used, but, as described in the explanation ofFIG. 4 , the same operation as the case where the multiple EDIDs ofFIG. 4 are switched is performed. Further, thesound selector 20205 is provided. A sound signal transmitted from the output of thesound separator 20103 to thedisplay device 1 is extracted and sent to thesound multiplex circuit 20112. Basically, however, the operation is the same operation asFIG. 4 . Because the same operation asFIG. 4 is performed to theexternal signal source 301 in particular, an explanation of operation is omitted. - When the
switches video signal source 20201 and the audio output of the internalsound signal source 20202, EDID data need not be sent and received. Acontroller 20107 directly controls (not shown) thesound signal source 20202 and sets the optimum a number of sound channel of a sound to be reproduced. Because another operation is the same operation as theexternal signal source 301, it is omitted. - Subsequently, another embodiment of the present invention is described with reference to the device block diagram of
FIG. 11 . In the diagram, a headphone terminal is provided in theswitcher 201 with an audio amplifier ofFIG. 1 . InFIG. 11, 226 is a headphone cable that connects the headphone terminal (not shown) and the headphone of theswitcher 201 and 20207 is a headphone detector. The same component as shown inFIG. 10 is shown assigning the same number to it. The basic operation is omitted because it is the same asFIG. 10 , and only the headphone connection operation is described below. - When a headphone is connected to a headphone terminal, the headphone detector 20207 detects the connection of the headphone by opening and closing a mechanical contact or detecting the impedance detection of the headphone. A headphone detection signal is input to the
audio output circuit 20105 and thesound selector 20205 and stops (mutes) the audio output to thespeaker cables 220 to 225 and the audio output to thesound multiplex circuit 20112. Consequently, the audio output of the speaker connected to theswitcher 201 and all the speakers connected to thedisplay device 1 can be stopped. To stop the sound connected to a display device, there is also a method of sending a control signal to the display device so that the sound volume of thedisplay device 1 can be reduced except that the input of the aforementionedsound multiplex circuit 20112 is muted. - Hereupon, for example, if it is assumed that the speaker arrangement of the 5.1 channel is used before a headphone is connected, a number of sound channel of a sound to be reproduced, such as the connected headphone is stereophonic or monaural, is decreased. The change of this number of sound channel rewrites the speaker arrangement information of the EDID-
RAM 20206 via thecontroller 20107 and is posted to thesignal source 301 using the hot plug function of theswitch 20101. Simultaneously, thesignal source 301 outputs sound data suitable for a headphone. - Subsequently, another embodiment of the present invention is described with reference of the block diagram of the display unit of
FIG. 12 . In the drawing, a headphone terminal is provided in thedisplay unit 101 ofFIG. 1 . InFIG. 12, 123 is a headphone cable to which the headphone terminal (not shown) and the headphone of thedisplay unit 101 are connected.Numeral 10113 is a headphone detection circuit and 10114 is an EDID-RAM. The part in which the EDID-1 and EDID-2 ofFIG. 6 are switched by theswitch 10111 is substituted for the EDID-RAM in the same manner as the example ofFIG. 10 . In addition, even the same component as shown inFIG. 6 is shown assigning the same number to it. The basic operation is omitted because it is the same asFIG. 6 , and only the headphone connection operation is described below. - When a headphone is connected to a headphone terminal, the
headphone detection circuit 10113 detects the connection of the headphone by opening and closing a mechanical contact or detecting the impedance of the headphone. A headphone detection signal is input to theaudio output circuit 20105 and thesound selection circuit 10105 and stops (mutes) the audio output to thespeaker cables display unit 101 can be stopped. - Hereupon, for example, when it is assumed that a speaker is not connected before a headphone is connected, a sound reproduction function is added by connecting the headphone. This change rewrites the speaker arrangement information of the EDID-
RAM 10114 viacontrol 10107 and is posted to a sound processing unit (not shown) , such as an audio output unit and a switcher, using the hot plug function of theswitch 20101. A display unit receives sound data suitable for a headphone and a sound is reproduced by the headphone. Further, if the sound processing unit connected to theaudiovideo transmission line 231 with a plug and play function is an audio amplifier to which speakers are connected, the audio output of these speakers need to be stopped at the same time. Accordingly, the speaker arrangement information of the aforementioned EDID-RAM can be posted to the audio amplifier when it is rewritten. - Further, if the dedicated control line and remote controller are used jointly though they are not shown, a speaker can be muted by directly controlling an audio amplifier. The method of jointly using the control line and the remote controller is effective when a stereophonic speaker cannot be distinguished from a stereophonic headphone. In this case, if the stereophonic headphone is connected, the speaker arrangement of the EDID-RAM is identical when the stereophonic speaker is connected to the
display unit 101. - In the explanation of the aforementioned embodiment, the
switcher 201 is separated from theaudiovideo signal source display device 1, but even the configuration in which theaudiovideo signal source display device 1 is incorporated in theswitcher 201 ought to be acceptable. In this case, the configuration in which connection information is sent from theswitcher 201 to theaudiovideo signal source - Further, when a television broadcasting signal has program information, a number of sound channel ought also be controlled based on the program information. Program information is used to display an electronic program guide on a display. This program usually indicates a schedule of a program in the future of each channel. Further, program information includes a program title, a name (number of sound channel) of a broadcasting station, broadcasting start and end times of a program, types (movie, news, and drama) of the program, and data regarding the number of sound channel of a sound reproduced in the program.
- The broadcasting signal of news program usually has the sound signal of the 2 channel. The broadcasting signal of movie and music program often have the sound signal of the 5.1 channel or 7.1 channel. Accordingly, the data indicating that the number of sound channel is the 2 channel may be added to the broadcasting signal of news, and the data indicating that the number of sound channel is 5.1 channel or 7.1 channel may be added to the broadcasting signals of movie and music programs.
- Accordingly, as another embodiment of the present invention, the
sound signal source 30102 ought also be controlled in a channel number control circuit by extracting program information from the broadcasting signal of the program selected by the user in accordance with the data of the number of sound channel contained in the extracted program information. Accordingly, when a news program is selected and the data indicating that the number of sound channel is the 2 channel is added to the broadcasting signal, a sound is reproduced through the 2 channel even if a device is provided with the speaker of the 5.1 channel. On the other hand, when a movie program is selected and the data indicating that the number of sound channel is the 2 channel is added to the broadcasting signal, and the device is provided with the speaker of the 5.1 channel, the sound is reproduced by utilizing all speakers. Such configuration can realize automatic control of the number of sound channel in accordance with the contents of the program. - Moreover, in the present invention, if the program with 2 channel audio signal is indicated as a “movie” program information which the program contains, the program can be reproduced artificially through the 5.1 channel. Further, if the program with 7.1 channel audio signal is Indicated as “news” in a program information in which the program contains, the program can be reproduced artificially through the 2 channel. That is, this embodiment is characterized by using the data of the program type more preferentially than the number of sound channel data contained in program information as data for determining a number of sound channel of a sound to be reproduced.
- More specifically, the
audiovideo signal source 301 including a receiver of a television broadcasting signal reproduces a sound through the 5.1 channel or 7.1 channel when the program information indicates a “movie”. Thesource 301 reproduces a sound through the 2 channel when the program information indicates “news”. For these function, a table is constructed by presetting the data of the appropriate number of sound channel of a sound to be reproduced every program type. The data table is used to set the number of sound channel of a sound to be reproduced. The aforementioned table can be stored in a microcomputer memory or another memory that is not shown. The audiovideo signal source 301 (built-in microcomputer) extracts program information from the received television broadcasting signal and judges the contents of the data of a program type contained in the program information. The judgment result is referred to with the table stored in the aforementioned memory and the microcomputer reads the data of a number of sound channel of a sound to be reproduced that corresponds to the judged program type from the aforementioned memory. Using this data of the number of sound channel of the sound to be reproduced, the program sound number of sound channel control circuit controls thesound signal source 30102 and controls the number of sound channel of the sound to be reproduced. Such configuration can reproduce a sound in appropriate number of sound channel in accordance with a program type. Regarding the number of reproduced sound channel control that uses the aforementioned table, the user ought to be able to select permission/prohibition. At that time, desirably, using an OSD circuit, a message regarding the selection ought to be displayed on a display and processed interactively with the user. - According to the present invention, a multiple-channel sound signal can suitably be reproduced in accordance with a connected state of a speaker. Further, besides the speaker connected to a switcher and such, the speaker of a display device can be used jointly and a higher sound effect can be obtained. Further, because the connected state of the speakers are displayed on the display device, an user would easily and accurately connects the speakers.
Claims (13)
1-23. (canceled)
24. A sound processing unit for receiving a sound signal from a sound outputting unit, thereby outputting the sound signal to a speaker, comprising:
an obtaining unit operable to obtain first information relating to a condition of said speaker;
a memory operable to store a plurality of second information for specifying a sound output format; and
a control circuit,
wherein said control circuit is operable to control said sound outputting unit to output information therefrom, corresponding to the first information, which is obtained within said obtaining portion, among said plurality of second information stored within said memory.
25. The sound processing unit of claim 24 wherein said second information is stored in said memory together with third information relating to a specification of said sound processing unit.
26. The sound processing unit of claim 24 wherein said sound processing unit is connectable with the sound outputting apparatus through a signal transmission line, and said signal transmission line includes a first line on which the sound signal is transmitted from said sound outputting unit to said sound processing unit, and a second line on which said second information is transmitted from said sound processing unit to said sound outputting unit.
27. The sound processing unit of claim 24 wherein said controller portion controls said sound outputting unit to output said second information therefrom, corresponding to said first information, when said first information obtained within said obtaining portion is changed.
28. The sound processing unit of claim 26 wherein said control circuit initializes a connecting condition of said signal transmission line, and controls said sound outputting unit to output said second information therefrom, corresponding to said first information.
29. The sound processing unit of claim 28 wherein initialization of the connecting condition of said signal transmission line includes a process of cutting off said signal transmission line for a predetermined time period.
30. The sound processing unit of claim 24 wherein the second information from said memory is outputted to said sound outputting unit at a predetermined period.
31. The sound processing unit of claim 24 wherein said obtaining portion obtains information relating to the connection condition of said speaker with said sound outputting units, as the first information relating to the condition of said speaker.
32. A signal distributor apparatus for receiving a sound signal from a sound outputting unit and outputting the sound signal to a first speaker, as well as receiving a video signal from said sound outputting unit and outputting the video signal to a connected display unit, comprising:
an obtaining portion operable to obtain first information relating to a condition of said first speaker and a condition of a second speaker built within said display unit;
a memory operable to store a plurality of second information for specifying a sound output format; and
a control circuit operable to control said sound outputting unit to output information therefrom, corresponding to said first information, which is obtained within said obtaining unit, among said plurality of second information stored within said memory.
33. A display apparatus for receiving a sound signal from a sound outputting unit and outputting the sound signal to a speaker, as well as receiving a video signal from said sound outputting apparatus and displaying the video signal thereon, comprising:
a obtaining unit operable to obtain first information relating to a condition of said speaker;
a memory operable to store a plurality of second information for specifying a sound output format; and
a control circuit operable to control said sound outputting unit to output information therefrom, corresponding to the first information, which is obtained within said obtaining unit, among said plurality of second information stored within said memory.
34. The display apparatus of claim 33 wherein the condition of said speaker is that of an additional speaker built into the display apparatus or connectable therewith.
35. A display device for processing and displaying a video signal output from an external sound processing unit connected with a speaker, comprising:
a headphone connection terminal;
an obtaining unit operable to obtain headphone information relating to whether a headphone is connected to the headphone connection terminal;
a memory operable to store sound information for specifying a sound output format; and
a control circuit operable to send the sound information based on the headphone information to the external signal processing unit,
wherein the control circuit is further operable to perform a muting of sound output from the speaker connected to the external signal processing unit when the detection circuit detects that the headphone is connected to the headphone connection terminal.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/703,300 US20070133812A1 (en) | 2002-03-29 | 2007-02-06 | Sound processing unit, sound processing system, audio output unit and display device |
US12/251,345 US8213630B2 (en) | 2002-03-29 | 2008-10-14 | Sound processing unit, sound processing system, audio output unit and display device |
US12/983,034 US8903105B2 (en) | 2002-03-29 | 2010-12-31 | Sound processing unit, sound processing system, audio output unit and display device |
US14/465,836 US10136221B2 (en) | 2002-03-29 | 2014-08-22 | Sound processing unit, sound processing system, audio output unit and display device |
US16/165,026 US10397703B2 (en) | 2002-03-29 | 2018-10-19 | Sound processing unit, sound processing system, audio output unit and display device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002093545 | 2002-03-29 | ||
JP2002-093545 | 2002-03-29 | ||
US10/346,379 US20030185400A1 (en) | 2002-03-29 | 2003-01-15 | Sound processing unit, sound processing system, audio output unit and display device |
US11/703,300 US20070133812A1 (en) | 2002-03-29 | 2007-02-06 | Sound processing unit, sound processing system, audio output unit and display device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/346,379 Continuation US20030185400A1 (en) | 2002-03-29 | 2003-01-15 | Sound processing unit, sound processing system, audio output unit and display device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/251,345 Continuation US8213630B2 (en) | 2002-03-29 | 2008-10-14 | Sound processing unit, sound processing system, audio output unit and display device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070133812A1 true US20070133812A1 (en) | 2007-06-14 |
Family
ID=28449660
Family Applications (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/346,379 Abandoned US20030185400A1 (en) | 2002-03-29 | 2003-01-15 | Sound processing unit, sound processing system, audio output unit and display device |
US11/703,300 Abandoned US20070133812A1 (en) | 2002-03-29 | 2007-02-06 | Sound processing unit, sound processing system, audio output unit and display device |
US12/251,345 Active 2025-08-02 US8213630B2 (en) | 2002-03-29 | 2008-10-14 | Sound processing unit, sound processing system, audio output unit and display device |
US12/983,034 Active 2025-10-19 US8903105B2 (en) | 2002-03-29 | 2010-12-31 | Sound processing unit, sound processing system, audio output unit and display device |
US14/465,836 Expired - Lifetime US10136221B2 (en) | 2002-03-29 | 2014-08-22 | Sound processing unit, sound processing system, audio output unit and display device |
US16/165,026 Expired - Fee Related US10397703B2 (en) | 2002-03-29 | 2018-10-19 | Sound processing unit, sound processing system, audio output unit and display device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/346,379 Abandoned US20030185400A1 (en) | 2002-03-29 | 2003-01-15 | Sound processing unit, sound processing system, audio output unit and display device |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/251,345 Active 2025-08-02 US8213630B2 (en) | 2002-03-29 | 2008-10-14 | Sound processing unit, sound processing system, audio output unit and display device |
US12/983,034 Active 2025-10-19 US8903105B2 (en) | 2002-03-29 | 2010-12-31 | Sound processing unit, sound processing system, audio output unit and display device |
US14/465,836 Expired - Lifetime US10136221B2 (en) | 2002-03-29 | 2014-08-22 | Sound processing unit, sound processing system, audio output unit and display device |
US16/165,026 Expired - Fee Related US10397703B2 (en) | 2002-03-29 | 2018-10-19 | Sound processing unit, sound processing system, audio output unit and display device |
Country Status (2)
Country | Link |
---|---|
US (6) | US20030185400A1 (en) |
JP (3) | JP4530108B2 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050068346A1 (en) * | 2003-09-29 | 2005-03-31 | Pioneer Corporation | Image output apparatus, image output method, and image display system |
US20060171565A1 (en) * | 2005-02-02 | 2006-08-03 | Funai Electric Co., Ltd. | Television receiver |
US20070009119A1 (en) * | 2005-06-14 | 2007-01-11 | Young-Chan Kim | Display apparatus and control method thereof |
US20100053471A1 (en) * | 2008-08-29 | 2010-03-04 | Canon Kabushiki Kaisha | Television apparatus and method for controlling the same |
US20100183157A1 (en) * | 2007-06-15 | 2010-07-22 | Panasonic Corporation | Audio signal reproduction device and audio signal reproduction system |
US20100199298A1 (en) * | 2008-12-19 | 2010-08-05 | Nobuaki Kabuto | Data reading method, and a video transmitter and a video receiver using the same |
US20120307157A1 (en) * | 2011-05-31 | 2012-12-06 | Funai Electric Co., Ltd. | Audio/video device and audio/video system comprising same |
EP2953372A1 (en) * | 2014-06-03 | 2015-12-09 | Samsung Electronics Co., Ltd. | Broadcast receiving apparatus and audio output method thereof |
CN106256130A (en) * | 2014-06-03 | 2016-12-21 | 三星电子株式会社 | Apparatus for receiving broadcasting and audio-frequency inputting method thereof |
CN106658291A (en) * | 2016-12-21 | 2017-05-10 | 捷开通讯(深圳)有限公司 | Audio device and method for switching stereo and single track external play |
US10417105B2 (en) | 2014-05-26 | 2019-09-17 | Yamaha Corporation | Connection confirmation system, connection detection apparatus, and connection confirmation method |
Families Citing this family (89)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030185400A1 (en) * | 2002-03-29 | 2003-10-02 | Hitachi, Ltd. | Sound processing unit, sound processing system, audio output unit and display device |
US9207905B2 (en) | 2003-07-28 | 2015-12-08 | Sonos, Inc. | Method and apparatus for providing synchrony group status information |
US8290603B1 (en) | 2004-06-05 | 2012-10-16 | Sonos, Inc. | User interfaces for controlling and manipulating groupings in a multi-zone media system |
US11106424B2 (en) | 2003-07-28 | 2021-08-31 | Sonos, Inc. | Synchronizing operations among a plurality of independently clocked digital data processing devices |
US11650784B2 (en) | 2003-07-28 | 2023-05-16 | Sonos, Inc. | Adjusting volume levels |
US8086752B2 (en) | 2006-11-22 | 2011-12-27 | Sonos, Inc. | Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices that independently source digital data |
US11294618B2 (en) | 2003-07-28 | 2022-04-05 | Sonos, Inc. | Media player system |
US8234395B2 (en) | 2003-07-28 | 2012-07-31 | Sonos, Inc. | System and method for synchronizing operations among a plurality of independently clocked digital data processing devices |
US11106425B2 (en) | 2003-07-28 | 2021-08-31 | Sonos, Inc. | Synchronizing operations among a plurality of independently clocked digital data processing devices |
US7526093B2 (en) * | 2003-08-04 | 2009-04-28 | Harman International Industries, Incorporated | System for configuring audio system |
TWI279153B (en) * | 2004-02-27 | 2007-04-11 | Lg Electronics Inc | Apparatus and method for controlling operation of audio low sound output means |
US9977561B2 (en) | 2004-04-01 | 2018-05-22 | Sonos, Inc. | Systems, methods, apparatus, and articles of manufacture to provide guest access |
US8024055B1 (en) | 2004-05-15 | 2011-09-20 | Sonos, Inc. | Method and system for controlling amplifiers |
US8262478B2 (en) | 2004-05-28 | 2012-09-11 | Wms Gaming Inc. | Gaming device with attached audio-capable chair |
WO2005117648A1 (en) * | 2004-05-28 | 2005-12-15 | Wms Gaming Inc. | Chair interconnection for a gaming machine |
US8326951B1 (en) | 2004-06-05 | 2012-12-04 | Sonos, Inc. | Establishing a secure wireless network with minimum human intervention |
US8868698B2 (en) | 2004-06-05 | 2014-10-21 | Sonos, Inc. | Establishing a secure wireless network with minimum human intervention |
EP1617699A3 (en) * | 2004-07-12 | 2013-11-27 | Sony Corporation | Flat panel display apparatus, stand and speaker apparatus |
US20060089735A1 (en) * | 2004-10-21 | 2006-04-27 | Atkinson Lee W | Method and apparatus for configuring the audio outputs of an electronic device |
WO2006045617A2 (en) * | 2004-10-25 | 2006-05-04 | Nokia Corporation | Detection, identification and operation of pherpherals connected via an audio/video-plug to an electronic device |
WO2006057324A1 (en) * | 2004-11-25 | 2006-06-01 | Matsushita Electric Industrial Co., Ltd. | Repeater apparatus and method for controlling the same |
US20060199645A1 (en) * | 2005-02-28 | 2006-09-07 | Canterbury Stephen A | Wagering game with streaming usb audio |
KR20060109770A (en) * | 2005-04-18 | 2006-10-23 | 엘지전자 주식회사 | Sound output control method for audio device |
JP4092702B2 (en) * | 2005-04-20 | 2008-05-28 | 船井電機株式会社 | Optical disk playback device and plug adapter |
JP2007058930A (en) * | 2005-08-22 | 2007-03-08 | Funai Electric Co Ltd | Disk playback device |
JP4487316B2 (en) * | 2005-09-21 | 2010-06-23 | オンキヨー株式会社 | Video signal and multi-channel audio signal transmission signal processing apparatus and video / audio reproduction system including the same |
JP5179186B2 (en) * | 2005-09-29 | 2013-04-10 | パナソニック株式会社 | Video / audio output device, audio output form notification method, video / audio output system |
JP4299822B2 (en) * | 2005-09-30 | 2009-07-22 | パナソニック株式会社 | Video / audio output device and external speaker control device |
JP4674520B2 (en) * | 2005-10-11 | 2011-04-20 | ソニー株式会社 | Information processing apparatus and method, and program |
JP5145633B2 (en) | 2005-10-31 | 2013-02-20 | パナソニック株式会社 | Sound reproduction apparatus and video / audio viewing system |
EP1947843A4 (en) * | 2005-10-31 | 2010-07-07 | Panasonic Corp | Audiovisual system |
JP4794983B2 (en) * | 2005-10-31 | 2011-10-19 | パナソニック株式会社 | Audio output system control method and audio output system |
KR100888474B1 (en) | 2005-11-21 | 2009-03-12 | 삼성전자주식회사 | Apparatus and method for encoding/decoding multichannel audio signal |
US8607281B2 (en) * | 2006-09-07 | 2013-12-10 | Porto Vinci Ltd. Limited Liability Company | Control of data presentation in multiple zones using a wireless home entertainment hub |
US9319741B2 (en) | 2006-09-07 | 2016-04-19 | Rateze Remote Mgmt Llc | Finding devices in an entertainment system |
US9202509B2 (en) | 2006-09-12 | 2015-12-01 | Sonos, Inc. | Controlling and grouping in a multi-zone media system |
US8788080B1 (en) | 2006-09-12 | 2014-07-22 | Sonos, Inc. | Multi-channel pairing in a media system |
US8483853B1 (en) | 2006-09-12 | 2013-07-09 | Sonos, Inc. | Controlling and manipulating groupings in a multi-zone media system |
EP2104351B1 (en) * | 2006-12-14 | 2014-08-06 | Panasonic Corporation | Audio-video output device, audio output device, audio-video reproduction device, audio-video data reproduction system, and audio-video data reproduction method |
US8705748B2 (en) | 2007-05-04 | 2014-04-22 | Creative Technology Ltd | Method for spatially processing multichannel signals, processing module, and virtual surround-sound systems |
KR101445637B1 (en) | 2007-06-14 | 2014-10-01 | 삼성전자주식회사 | Method for checking Audio Interface in AV system and apparatus thereof |
US8351624B2 (en) * | 2007-06-18 | 2013-01-08 | Sony Corporation | Audio output apparatus, audio input apparatus, audio control apparatus, audio control system, and audio control method |
WO2009010056A1 (en) * | 2007-07-16 | 2009-01-22 | The Tc Group A/S | Method of determining a class of a load connected to an amplifier output |
JP4920522B2 (en) * | 2007-08-06 | 2012-04-18 | 株式会社東芝 | Information processing apparatus and output interlocking control method |
JP5040528B2 (en) * | 2007-08-28 | 2012-10-03 | ソニー株式会社 | Audio signal transmitting apparatus, audio signal receiving apparatus, and audio signal transmission method |
JP2009065391A (en) * | 2007-09-05 | 2009-03-26 | Toshiba Corp | Video processing apparatus and video processing method |
TWM333021U (en) * | 2007-12-18 | 2008-05-21 | Princeton Technology Corp | Audio playing apparatus |
JP2009278619A (en) * | 2008-04-17 | 2009-11-26 | Panasonic Corp | Multi-channel sound output device |
JP5645370B2 (en) | 2009-04-23 | 2014-12-24 | 日立マクセル株式会社 | Video equipment |
US8599235B2 (en) * | 2009-07-27 | 2013-12-03 | Cisco Technology, Inc. | Automatic display latency measurement system for video conferencing |
JP5531486B2 (en) * | 2009-07-29 | 2014-06-25 | ヤマハ株式会社 | Audio equipment |
JP5246111B2 (en) | 2009-09-04 | 2013-07-24 | ヤマハ株式会社 | Audio equipment |
US9165394B2 (en) * | 2009-10-13 | 2015-10-20 | Nvidia Corporation | Method and system for supporting GPU audio output on graphics processing unit |
JP2011124925A (en) * | 2009-12-14 | 2011-06-23 | Sony Corp | Output control apparatus, output control method, program, and output control system |
JP2012047842A (en) * | 2010-08-25 | 2012-03-08 | Seiko Epson Corp | Image display device, and image display method |
JP2012047843A (en) * | 2010-08-25 | 2012-03-08 | Seiko Epson Corp | Control device, image display device, and control method |
US20120105603A1 (en) * | 2010-11-02 | 2012-05-03 | Hsuan-Ching Liu | Display system with dynamic 3d sound reproduction and related method |
CN102595153A (en) * | 2011-01-13 | 2012-07-18 | 承景科技股份有限公司 | Display system for dynamically supplying three-dimensional sound effects and relevant method |
US11429343B2 (en) | 2011-01-25 | 2022-08-30 | Sonos, Inc. | Stereo playback configuration and control |
US11265652B2 (en) | 2011-01-25 | 2022-03-01 | Sonos, Inc. | Playback device pairing |
US8938312B2 (en) | 2011-04-18 | 2015-01-20 | Sonos, Inc. | Smart line-in processing |
US9042556B2 (en) | 2011-07-19 | 2015-05-26 | Sonos, Inc | Shaping sound responsive to speaker orientation |
US9729115B2 (en) | 2012-04-27 | 2017-08-08 | Sonos, Inc. | Intelligently increasing the sound level of player |
US8903526B2 (en) | 2012-06-06 | 2014-12-02 | Sonos, Inc. | Device playback failure recovery and redistribution |
KR101956161B1 (en) * | 2012-08-30 | 2019-03-08 | 삼성전자 주식회사 | Method and apparatus for controlling audio output |
US9008330B2 (en) | 2012-09-28 | 2015-04-14 | Sonos, Inc. | Crossover frequency adjustments for audio speakers |
CN103813240B (en) * | 2012-11-09 | 2016-08-24 | 技嘉科技股份有限公司 | Multichannel loudspeaker |
TWI507048B (en) * | 2012-11-09 | 2015-11-01 | Giga Byte Tech Co Ltd | Multiple sound channels speaker |
KR102052372B1 (en) * | 2013-01-11 | 2019-12-05 | 엘지전자 주식회사 | Apparatus and Method for transmitting and receiving data using earphone |
US9118998B2 (en) * | 2013-02-07 | 2015-08-25 | Giga-Byte Technology Co., Ltd. | Multiple sound channels speaker |
JP6228387B2 (en) * | 2013-05-14 | 2017-11-08 | 日本放送協会 | Acoustic signal reproduction device |
US9244516B2 (en) | 2013-09-30 | 2016-01-26 | Sonos, Inc. | Media playback system using standby mode in a mesh network |
US9226087B2 (en) | 2014-02-06 | 2015-12-29 | Sonos, Inc. | Audio output balancing during synchronized playback |
US9226073B2 (en) | 2014-02-06 | 2015-12-29 | Sonos, Inc. | Audio output balancing during synchronized playback |
US10248376B2 (en) | 2015-06-11 | 2019-04-02 | Sonos, Inc. | Multiple groupings in a playback system |
TW201721473A (en) * | 2015-12-11 | 2017-06-16 | 富奇想股份有限公司 | Intelligent system |
CN105632542B (en) * | 2015-12-23 | 2019-05-28 | 小米科技有限责任公司 | Audio frequency playing method and device |
US10303422B1 (en) | 2016-01-05 | 2019-05-28 | Sonos, Inc. | Multiple-device setup |
CN105847715A (en) * | 2016-01-20 | 2016-08-10 | 乐视致新电子科技(天津)有限公司 | Multimedia playing device |
US10713663B2 (en) * | 2016-03-29 | 2020-07-14 | Authentix, Inc. | Product authentication using barcode characteristics |
US10712997B2 (en) | 2016-10-17 | 2020-07-14 | Sonos, Inc. | Room association based on name |
KR102553250B1 (en) * | 2017-09-22 | 2023-07-10 | 삼성전자주식회사 | Electronic apparatus, method for controlling thereof and the computer readable recording medium |
CN108804071B (en) * | 2018-05-29 | 2021-12-14 | 维沃移动通信有限公司 | Receiver driving method and mobile terminal |
US11504626B2 (en) * | 2018-11-29 | 2022-11-22 | Ts Tech Co., Ltd. | Seat system and seat experience device |
KR102630446B1 (en) * | 2019-08-02 | 2024-01-31 | 삼성전자주식회사 | Display apparatus, audio apparatus and method for controlling thereof |
US20220295206A1 (en) * | 2019-08-09 | 2022-09-15 | Lg Electronics Inc. | Display device and operating method thereof |
JP6875484B2 (en) * | 2019-10-24 | 2021-05-26 | 株式会社Cygames | Content playback program, content playback device, content playback method and content playback system |
CN113810830A (en) * | 2020-06-17 | 2021-12-17 | 苏州佳世达电通有限公司 | Sound playing system |
CN116609706B (en) * | 2023-07-19 | 2023-09-19 | 北京同方艾威康科技有限公司 | VGA image quality nondestructive disconnection detection method |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042070A (en) * | 1990-10-01 | 1991-08-20 | Ford Motor Company | Automatically configured audio system |
US5633943A (en) * | 1994-09-09 | 1997-05-27 | Compaq Computer Corporation | Audio system for a personal computer |
US5939656A (en) * | 1997-11-25 | 1999-08-17 | Kabushiki Kaisha Kawai Gakki Seisakusho | Music sound correcting apparatus and music sound correcting method capable of achieving similar audibilities even by speaker/headphone |
US5995633A (en) * | 1996-12-27 | 1999-11-30 | Apple Computer, Inc. | System and method for multiplexing control signals over data signal conductors |
US6079046A (en) * | 1997-04-09 | 2000-06-20 | International Business Machines Corporation | Dynamic data transfer bandwidth control |
US6275537B1 (en) * | 1997-06-04 | 2001-08-14 | Samsung Electronics Co., Ltd. | Audio and video multiplexed transmission system |
US20010018661A1 (en) * | 2000-01-28 | 2001-08-30 | Katsushi Sato | Reservation registration apparatus method of reservation registration and program storage medium |
US6321278B1 (en) * | 1998-09-14 | 2001-11-20 | Compaq Computer Corporation | Automatically detecting a connection into a computer system standardized connector for disabling a front speaker |
US6359987B1 (en) * | 1997-05-16 | 2002-03-19 | Compaq Computer Corporation | Multimedia speaker detection circuit |
US20020075416A1 (en) * | 2000-12-14 | 2002-06-20 | Yuichi Matsumoto | Remote controll system |
US20030161479A1 (en) * | 2001-05-30 | 2003-08-28 | Sony Corporation | Audio post processing in DVD, DTV and other audio visual products |
US6867820B2 (en) * | 2000-03-08 | 2005-03-15 | Lg Electronics Inc. | Method for displaying audio settings menu of display apparatus |
US6934396B1 (en) * | 2001-09-28 | 2005-08-23 | Gateway Inc. | Speaker embedded with oral setup tutorial |
US7099481B2 (en) * | 2001-05-15 | 2006-08-29 | Lenovo (Singapore) Pte. Ltd. | Method and system for automatically detecting and powering PC speakers |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0358682A (en) | 1989-07-27 | 1991-03-13 | Sanyo Electric Co Ltd | Television receiver provided with display function for external speaker state |
JPH0348999U (en) | 1989-09-20 | 1991-05-13 | ||
JPH03258176A (en) | 1990-03-08 | 1991-11-18 | Sharp Corp | Television receiver |
JPH05153520A (en) | 1991-11-28 | 1993-06-18 | Sony Corp | Av amplifier |
JPH0662500A (en) * | 1992-08-05 | 1994-03-04 | Mitsubishi Electric Corp | Muse decoder |
JPH0668189A (en) | 1992-08-20 | 1994-03-11 | Meidensha Corp | Method for automatically applying line number and terminal code in cad |
JP2607471Y2 (en) | 1993-02-10 | 2001-09-04 | オンキヨー株式会社 | Audio visual amplifier |
JP3084176B2 (en) | 1993-06-24 | 2000-09-04 | シャープ株式会社 | TV door phone equipment |
JPH07296519A (en) * | 1994-04-28 | 1995-11-10 | Sony Corp | Device for transmitting digital audio signal |
JP3208256B2 (en) * | 1994-08-31 | 2001-09-10 | 三洋電機株式会社 | Audio processing output device |
JPH1079896A (en) * | 1996-09-02 | 1998-03-24 | Sony Corp | Television image receiver |
JPH1094086A (en) | 1996-09-12 | 1998-04-10 | Fujitsu Ltd | Sound reproducing device and sound reproducing method |
JPH10174029A (en) * | 1996-12-10 | 1998-06-26 | Matsushita Electric Ind Co Ltd | Data transfer output method and its medium |
JPH10191203A (en) * | 1996-12-27 | 1998-07-21 | Toshiba Corp | Sound reproduction circuit |
JPH10215500A (en) | 1997-01-30 | 1998-08-11 | Matsushita Electric Ind Co Ltd | Multi-channel audio output circuit for television receiver |
JP3491496B2 (en) | 1997-05-27 | 2004-01-26 | 株式会社ケンウッド | Digital audio system |
JP3454138B2 (en) | 1998-02-13 | 2003-10-06 | ヤマハ株式会社 | Sound field processing decision device |
JPH11355880A (en) | 1998-06-12 | 1999-12-24 | Sharp Corp | Acoustic reproducing device |
JP2000023300A (en) | 1998-07-06 | 2000-01-21 | Victor Co Of Japan Ltd | Automatic sound system setting device |
KR100360285B1 (en) * | 1999-05-20 | 2002-11-04 | 엘지전자 주식회사 | A METHOD AND APPARATUS FOR TRANSCEIVING AUDIO Data STREAM Through DIGITAL INTERFACE |
GB9911879D0 (en) * | 1999-05-22 | 1999-07-21 | Koninkl Philips Electronics Nv | Home entertainment system audio handling |
JP2001025085A (en) | 1999-07-08 | 2001-01-26 | Toshiba Corp | Channel arranging device |
JP2001077853A (en) * | 1999-09-03 | 2001-03-23 | Toshiba Corp | Multimedia transmission system |
JP2001145103A (en) * | 1999-11-18 | 2001-05-25 | Oki Electric Ind Co Ltd | Transmission device and communication system |
JP3408781B2 (en) | 2000-06-14 | 2003-05-19 | 株式会社ナナオ | Display device distribution device |
JP4401542B2 (en) | 2000-07-04 | 2010-01-20 | キヤノン株式会社 | Image processing apparatus, image processing apparatus control method, and recording medium |
JP2002084518A (en) * | 2000-09-07 | 2002-03-22 | Victor Co Of Japan Ltd | Method and device for communicating information based on object-selecting system |
JP2002084600A (en) * | 2000-09-08 | 2002-03-22 | Kenwood Corp | Amplifier |
US6981076B1 (en) * | 2000-09-27 | 2005-12-27 | Dell Products L.P. | Mechanism to disable dynamically a computer audio input/output connector |
US7295578B1 (en) * | 2001-09-12 | 2007-11-13 | Lyle James D | Method and apparatus for synchronizing auxiliary data and video data transmitted over a TMDS-like link |
US7019791B2 (en) * | 2001-11-09 | 2006-03-28 | Hitachi, Ltd. | Video processing device |
US20030185400A1 (en) * | 2002-03-29 | 2003-10-02 | Hitachi, Ltd. | Sound processing unit, sound processing system, audio output unit and display device |
US7277815B2 (en) * | 2005-07-08 | 2007-10-02 | Yu-Chiang Shih | Test interface card |
JP4299822B2 (en) * | 2005-09-30 | 2009-07-22 | パナソニック株式会社 | Video / audio output device and external speaker control device |
CN101729957A (en) * | 2008-10-24 | 2010-06-09 | 深圳富泰宏精密工业有限公司 | Electronic device and method for eliminating sound volume mutation |
JP2010191203A (en) | 2009-02-18 | 2010-09-02 | Sumitomo Chemical Co Ltd | Method for manufacturing polarizing plate |
US9118998B2 (en) * | 2013-02-07 | 2015-08-25 | Giga-Byte Technology Co., Ltd. | Multiple sound channels speaker |
-
2003
- 2003-01-15 US US10/346,379 patent/US20030185400A1/en not_active Abandoned
-
2007
- 2007-02-06 US US11/703,300 patent/US20070133812A1/en not_active Abandoned
-
2008
- 2008-10-14 US US12/251,345 patent/US8213630B2/en active Active
-
2009
- 2009-11-09 JP JP2009255676A patent/JP4530108B2/en not_active Expired - Lifetime
-
2010
- 2010-02-05 JP JP2010023713A patent/JP4935912B2/en not_active Expired - Lifetime
- 2010-04-19 JP JP2010095614A patent/JP2010200351A/en active Pending
- 2010-12-31 US US12/983,034 patent/US8903105B2/en active Active
-
2014
- 2014-08-22 US US14/465,836 patent/US10136221B2/en not_active Expired - Lifetime
-
2018
- 2018-10-19 US US16/165,026 patent/US10397703B2/en not_active Expired - Fee Related
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5042070A (en) * | 1990-10-01 | 1991-08-20 | Ford Motor Company | Automatically configured audio system |
US5633943A (en) * | 1994-09-09 | 1997-05-27 | Compaq Computer Corporation | Audio system for a personal computer |
US5995633A (en) * | 1996-12-27 | 1999-11-30 | Apple Computer, Inc. | System and method for multiplexing control signals over data signal conductors |
US6079046A (en) * | 1997-04-09 | 2000-06-20 | International Business Machines Corporation | Dynamic data transfer bandwidth control |
US6359987B1 (en) * | 1997-05-16 | 2002-03-19 | Compaq Computer Corporation | Multimedia speaker detection circuit |
US6275537B1 (en) * | 1997-06-04 | 2001-08-14 | Samsung Electronics Co., Ltd. | Audio and video multiplexed transmission system |
US5939656A (en) * | 1997-11-25 | 1999-08-17 | Kabushiki Kaisha Kawai Gakki Seisakusho | Music sound correcting apparatus and music sound correcting method capable of achieving similar audibilities even by speaker/headphone |
US6321278B1 (en) * | 1998-09-14 | 2001-11-20 | Compaq Computer Corporation | Automatically detecting a connection into a computer system standardized connector for disabling a front speaker |
US20010018661A1 (en) * | 2000-01-28 | 2001-08-30 | Katsushi Sato | Reservation registration apparatus method of reservation registration and program storage medium |
US6867820B2 (en) * | 2000-03-08 | 2005-03-15 | Lg Electronics Inc. | Method for displaying audio settings menu of display apparatus |
US20020075416A1 (en) * | 2000-12-14 | 2002-06-20 | Yuichi Matsumoto | Remote controll system |
US7099481B2 (en) * | 2001-05-15 | 2006-08-29 | Lenovo (Singapore) Pte. Ltd. | Method and system for automatically detecting and powering PC speakers |
US20030161479A1 (en) * | 2001-05-30 | 2003-08-28 | Sony Corporation | Audio post processing in DVD, DTV and other audio visual products |
US6934396B1 (en) * | 2001-09-28 | 2005-08-23 | Gateway Inc. | Speaker embedded with oral setup tutorial |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050068346A1 (en) * | 2003-09-29 | 2005-03-31 | Pioneer Corporation | Image output apparatus, image output method, and image display system |
US20060171565A1 (en) * | 2005-02-02 | 2006-08-03 | Funai Electric Co., Ltd. | Television receiver |
US7755705B2 (en) * | 2005-02-02 | 2010-07-13 | Funai Electric Co., Ltd. | Television receiver with multiple voice outputs |
US20070009119A1 (en) * | 2005-06-14 | 2007-01-11 | Young-Chan Kim | Display apparatus and control method thereof |
US8818008B2 (en) * | 2005-06-14 | 2014-08-26 | Samsung Electronics Co., Ltd | Display apparatus and control method thereof |
US20100183157A1 (en) * | 2007-06-15 | 2010-07-22 | Panasonic Corporation | Audio signal reproduction device and audio signal reproduction system |
US8135151B2 (en) | 2007-06-15 | 2012-03-13 | Panasonic Corporation | Audio signal reproduction device and audio signal reproduction system |
US20100053471A1 (en) * | 2008-08-29 | 2010-03-04 | Canon Kabushiki Kaisha | Television apparatus and method for controlling the same |
US8446533B2 (en) * | 2008-08-29 | 2013-05-21 | Canon Kabushiki Kaisha | Television apparatus and method for controlling the same |
US9258602B2 (en) | 2008-12-19 | 2016-02-09 | Hitachi Maxell, Ltd. | System and method for transmitting a video signal from a transmitter to a receiver and reading and writing EDID |
US20100199298A1 (en) * | 2008-12-19 | 2010-08-05 | Nobuaki Kabuto | Data reading method, and a video transmitter and a video receiver using the same |
US8341661B2 (en) * | 2008-12-19 | 2012-12-25 | Hitachi Consumer Electronics Co., Ltd. | System and method for transmitting a video signal from a transmitter to a receiver and reading and writing EDID |
US20120307157A1 (en) * | 2011-05-31 | 2012-12-06 | Funai Electric Co., Ltd. | Audio/video device and audio/video system comprising same |
US10417105B2 (en) | 2014-05-26 | 2019-09-17 | Yamaha Corporation | Connection confirmation system, connection detection apparatus, and connection confirmation method |
EP2953372A1 (en) * | 2014-06-03 | 2015-12-09 | Samsung Electronics Co., Ltd. | Broadcast receiving apparatus and audio output method thereof |
CN106256130A (en) * | 2014-06-03 | 2016-12-21 | 三星电子株式会社 | Apparatus for receiving broadcasting and audio-frequency inputting method thereof |
US9681224B2 (en) | 2014-06-03 | 2017-06-13 | Samsung Electronics Co., Ltd. | Broadcast receiving apparatus and audio output method thereof |
CN106658291A (en) * | 2016-12-21 | 2017-05-10 | 捷开通讯(深圳)有限公司 | Audio device and method for switching stereo and single track external play |
Also Published As
Publication number | Publication date |
---|---|
US20190052968A1 (en) | 2019-02-14 |
JP4530108B2 (en) | 2010-08-25 |
US10136221B2 (en) | 2018-11-20 |
JP2010200351A (en) | 2010-09-09 |
US8213630B2 (en) | 2012-07-03 |
US20110096935A1 (en) | 2011-04-28 |
US20140363018A1 (en) | 2014-12-11 |
US10397703B2 (en) | 2019-08-27 |
JP4935912B2 (en) | 2012-05-23 |
US20030185400A1 (en) | 2003-10-02 |
JP2010035216A (en) | 2010-02-12 |
US8903105B2 (en) | 2014-12-02 |
US20090041257A1 (en) | 2009-02-12 |
JP2010154544A (en) | 2010-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10397703B2 (en) | Sound processing unit, sound processing system, audio output unit and display device | |
JP4431308B2 (en) | Audio processing device, audio processing system, audio output device, and video display device | |
US7827588B2 (en) | Audiovisual (AV) device and control method thereof | |
EP2066113B1 (en) | Audio processing apparatus, video processing apparatus, and audiovisual system | |
US7583319B2 (en) | Data relay device, data relay method and data transmission system | |
US8395705B2 (en) | Auto install apparatus and method for AV device connection with digital TV | |
US20090281643A1 (en) | Audio processing device, audio processing method, and program | |
US8446533B2 (en) | Television apparatus and method for controlling the same | |
JP4501941B2 (en) | Audio processing apparatus and audio processing method | |
KR20060110631A (en) | Television receiver and method for displaying external device | |
CN113225621A (en) | Control method for automatically switching sound and picture and television | |
KR100640832B1 (en) | Digital television | |
KR20210114360A (en) | An Apparatus for Switching TV Image and a Method for Advertizing with a TV Using the Same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |