JP2007104324A - Record processing device, signal processing system, signal processing method, signal processing program, and recording medium recording the program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a signal processing device which reduces setting work. <P>SOLUTION: The signal processing device 20 comprising a signal processing unit 22 which processes input signals from an external device 10 connected with a bus, is provided with a memory unit 30 which memorizes information, a discrimination unit 26 which discriminates the external device 10, a setting unit 24 which sets signal processing of the signal processing unit 22, a writing unit 34 which correspondingly writes in discrimination information discriminated by the discrimination unit 26 and setting information which is set by the setting unit 24 in the memory unit 30, and a reading unit 32 which reads out the setting information corresponding to the discrimination information from a memory unit 30. The setting unit 24 sets signal processing based on the setting information read out by the reading unit 32. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a signal processing device that performs signal processing on an input signal, a signal processing system, a signal processing method, a signal processing program, and a recording medium on which the program is recorded. In particular, the present invention relates to a signal processing apparatus that processes and outputs an audio / video signal and / or a data signal input from an external apparatus connected by a bus using the IEEE (The Institute of Electrical and Electrical Engineers) 1394 system. is there.

  2. Description of the Related Art Conventionally, audio equipment and video equipment (hereinafter referred to as AV equipment) that are connected using an IEEE 1394 serial data bus and transmit signals to each other are widely used.

  In the AV equipment as described above, a plurality of playback equipment such as CD (Compact Disk), MD (Mini Disk), VTR (Video Tape Recorder), DVD (Digital Video Disk), HDR (Hard Disk Recorder), amplifier, A relay device such as an AV (Audio Visual) receiver and an output device such as a speaker or a display / projector are connected using an IEEE 1394 cable to form a series of data buses.

  A communication state in which devices connected to the bus control each other and transmit and receive data is referred to as a mutual communication connection state. Hereinafter, a system that is bus-connected in a mutual communication connection state will be described.

  In the above system, as shown in FIG. 2, one or more external devices 10 are connected to an IEEE 1394 bus 60 using an IEEE 1394 cable. Similarly, the signal processing device 200 is bus-connected to the IEEE 1394 bus 60 using an IEEE 1394 cable, and an image and / or sound is output via the output device 50 including the display 52 and the speaker 54.

  When establishing a connection between a plurality of devices connected using the IEEE 1394 bus 60, a candidate for a connectable device existing on the network is determined, and when only one connectable device candidate exists, A method of automatically establishing a predetermined connection between a corresponding candidate device and a control device is known (see, for example, Patent Document 1).

Also, in the digital broadcasting compatible television receiver, the viewing status of each user is grasped and viewing restriction is performed as necessary. Also, the image quality and sound quality settings at the time of reception are automated and reception when there are multiple reservations in the same time zone A method for facilitating program selection is known (see, for example, Patent Document 2).
JP 2004-254245 A (published September 9, 2004) JP 2001-203951 (published July 27, 2001)

  However, in the above-described conventional configuration, when a certain AV device is connected, and signal processing such as an image signal and an audio signal is set and reproduced, and then another AV device is connected and reproduced, each AV device Due to the difference in characteristics, there is a problem that settings for image quality, sound quality, and the like are different.

  The settings for signal processing such as image signals and audio signals as described above are combinations of various AV equipment such as playback equipment, amplification / relay equipment, and output equipment, personal preferences, and other environments and conditions. Determined by.

  However, when the external device to be connected is changed, it is necessary to manually reset the signal processing each time, and much labor is required.

  The present invention has been made in view of the above problems, and an object of the present invention is to perform signal processing for signal processing and output of image signals and audio signals in a signal processing system configured using a plurality of external devices. It is to realize a signal processing apparatus and the like that reduce the setting labor.

  In order to solve the above problems, the signal processing device of the present invention is a signal processing device including a signal processing unit that processes a signal input from an external device connected by a bus, and a storage unit that stores information; Identification means for identifying the external device that is the transmission source of the signal, setting means for setting signal processing of the signal processing means, identification information of the external device identified by the identification means, and setting by the setting means Writing means for associating setting information to the storage means, and reading means for reading the setting information corresponding to the identification information from the storage means, the setting means being read by the reading means The signal processing is set based on the setting information.

  According to the above configuration, since the external device that has output the signal and the corresponding signal processing setting are stored, when a signal is input from the previously set external device, the external device is identified and the corresponding setting is made. Since the same signal processing as the previous setting can be applied to the processing means, the signal processing apparatus with reduced setting labor can be realized.

  In the signal processing device of the present invention, the signal input from the external device may be at least one of an audio signal, a video signal, and a data signal.

  The data signal may be an identification signal for identifying an external device, a control signal on the bus, or the like, or an operation signal for transmitting an input from the operation panel.

  The signal processing device according to the present invention is characterized by further comprising a communication unit that establishes a connection with the external device based on the identification information identified by the identification unit.

  According to the above configuration, since the connection can be performed based on the information identified by the identifying means, the setting information corresponding to the external device can be applied simultaneously with the establishment of the connection.

  In the signal processing device according to the present invention, the communication means transmits a connection request to the external device to establish a connection.

  According to the above configuration, since the signal processing device requests a connection from the external device, the user selects an arbitrary one of the desired external devices already connected at an arbitrary timing and corresponds to the selected external device. There is an effect that signal processing can be added using the setting.

  In the signal processing device according to the present invention, the communication means establishes a connection in response to a connection request from the external device.

  According to the above configuration, since a connection is requested from the external device to the signal processing device, the external device that is the output source can be determined from the external device side at any timing, and signal processing can be added using the corresponding settings. There is an effect.

  In the signal processing apparatus of the present invention, it is preferable that the external apparatus is bus-connected using the IEEE1394 system.

  In the signal processing device of the present invention, the writing unit associates the identification information and the setting information with each other when the bus connection is reset or when the communication unit releases the connection. It is characterized by writing in.

  According to the above configuration, the latest setting information can be used at the next connection by writing the identification information and the setting information at the time of bus reset or at the time of releasing the connection. As a result, the latest settings can be applied even when signal processing is performed by switching a plurality of external devices.

  In addition, as a case where the above connection is released, specifically, a case where a connection release request is transmitted / received, a connection cannot be maintained due to an error, a case where a power-off request is made, or the like can be considered.

  The signal processing apparatus according to the present invention preferably further includes an operation unit that transmits an operation signal for changing the setting of the signal processing to the setting unit.

  According to the above configuration, since the signal processing device includes the operation means for setting, there is an additional effect that an operation to be set or a control operation can be input on the signal processing device.

  In addition, even a signal processing system including the signal processing device having the above-described configuration and an external device that outputs a signal to the signal processing device can achieve the same effects as described above.

  In the signal processing system, it is preferable that the external device further includes an operation unit that transmits an operation signal for changing the setting of the signal processing to the setting unit.

  According to the above configuration, there is an effect that operations and controls such as reproduction and setting can be performed on the external device.

  The various control inputs described above may use AV / C commands (AV / C Digital Interface Command Set) or command sets for remotely controlling AV devices connected via other networks. Also good.

  The signal processing method of the present invention is a signal processing method in a signal processing device including signal processing means for processing a signal input from an external device connected by a bus, and the signal processing device is configured to transmit the external signal from the transmission source. Identify the device, set the signal processing for the input signal, store the identified external device identification information and the set signal processing setting information in association with each other, and the external device outputs the signal again When performing, the external device of the transmission source is identified, the setting information stored in association with the external device is read from the storage means, and signal processing is performed based on the read setting information.

  According to the above method, since the external device that output the signal and the corresponding signal processing setting are stored, when a signal is input from the previously set external device, the external device is identified and the corresponding setting is made. Since the same signal processing as the previous setting can be applied to the signal processing means from the storage unit, it is possible to realize a signal processing device with reduced resetting effort.

  The signal processing method of the present invention is a signal processing method in a signal processing device for processing a signal input from an external device connected by a bus, wherein the signal processing device identifies the external device connected by a bus. Establishing a connection with the external device and setting signal processing for the input signal; identifying the external device identified when resetting the bus connection or releasing the connection Storing the information and the set signal processing setting information in the storage means in association with each other, and reestablishing a connection with the external device, identifying the external device that established the connection, and associating with the external device Reading the stored setting information from the storage means and performing signal processing based on the read setting information. It is characterized in that.

  According to the above method, since the connection can be performed based on the information identified by the identifying means, the setting information corresponding to the external device can be applied simultaneously with the establishment of the connection.

  The signal processing in the signal processing device can be executed on the computer by inputting the signal as data to the computer and processing the data. Furthermore, the signal processing program can be executed on an arbitrary computer by storing the signal processing program in a computer-readable recording medium.

  As described above, the signal processing device of the present invention identifies an external device, stores identification information of the identified external device in association with signal processing settings, and sets signal processing based on the stored setting information. Therefore, when the same external device is used, the resetting effort can be reduced.

Embodiment 1
One embodiment of the present invention is described below with reference to FIGS.

  First, the signal processing system of this embodiment will be described with reference to FIG. FIG. 2 is a schematic diagram showing the configuration of the signal processing system 1 of the present embodiment.

  The signal processing system 1 according to this embodiment includes a plurality of external devices 10, a signal processing device 20, an output device 50, and an IEEE 1394 bus 60.

  The external device 10 and the signal processing device 20 are bus-connected to the IEEE 1394 bus 60 using an IEEE 1394 cable or the like. The signal processing device 20 receives an output signal output from the external device 10 via the IEEE 1394 bus 60, extracts an audio / video signal from the output signal, performs signal processing, and transmits the signal to the output device 50.

  The output device 50 is connected to the signal processing device 20. The output device 50 includes, for example, a display 52 for displaying moving images, a speaker 54 for outputting sound, and the like. The output device 50 receives the audio / video signal subjected to signal processing by the signal processing device 20 and outputs video and / or audio from the display 52 and / or the speaker 54.

  In the present embodiment, the output device 50 is connected to the signal processing device 20 and the output device 50 receives and outputs the video / audio signal from the signal processing device 20. However, the present invention is not limited to this. The configuration may be such that the output device 50 is directly connected to the IEEE 1394 bus 60.

  In that case, the signal output from the external device 10 is transmitted to the signal processing device 20 through the IEEE 1394 bus 60, processed by the signal processing device 20, and again through the IEEE 1394 bus 60, the output device 50, the display 52, and / or the speaker 54. Is sent to and output.

  Since the external device 10 and the signal processing device 20 are connected by a bus using the IEEE 1394 method, it is possible to realize an intercommunication connection state in which devices connected to the bus control each other and transmit and receive data. .

  Next, the main configuration of the external device and the signal processing device used in the present embodiment will be described. FIG. 1 is a block diagram showing a schematic configuration of an external device 10 and a signal processing device 20 connected by a bus in the present embodiment.

  In the present embodiment, the external device 10 is bus-connected to the signal processing device 20 using the IEEE 1394 method, and outputs an image, video, data, and other signals. The external device 10 includes an operation unit 12, a reproduction unit 14, a processing unit 16, and a communication unit 18.

  The signal processing device 20 is connected to the IEEE 1394 bus 60 and is used to process and output a signal input from the external device 10, and includes a communication unit 21, a processing unit 22, a control unit 23, a setting unit 24, An operation unit 25, an identification unit 26, a storage unit 30, a reading unit 32, a writing unit 34, and an output unit 40 are included.

  First, the configuration of each part of the external device 10 will be described.

  The operation unit 12 is, for example, an operation panel or a remote control terminal, and is used for inputting signal processing settings to the processing unit 22 on the signal processing device 20. The operation unit 12 outputs an operation signal to the setting unit 24 on the signal processing device 20. The operation signal may include a signal for controlling each unit of the signal processing device 20. In the present embodiment, the operation unit 12 is installed on the external device 10, but may be installed on the signal processing device 20.

  If the operation unit 12 is configured to be installed on the external device 10, operation / control such as reproduction and setting on the external device 10 using the operation panel of the external device 10 connected to the signal processing device 20. It can be performed.

  The playback unit 14 is an AV device such as an optical disk external device such as a CD / MD / VTR / DVD / HDR, a player such as a record or cassette tape / DAT, or a receiving device such as an AM / FM / BS / CS tuner. And for outputting an output signal including an audio / video signal. In the present embodiment, it is assumed that the output signal includes an identification signal and an operation signal.

  The processing unit 16 processes the reproduced signal and changes the format to be transmitted to the processing device 20, for example, a format suitable for asynchronous communication or synchronous communication, or a format with less communication failure or data loss.

  The communication unit 18 establishes communication with the communication unit 21 in the signal processing device 20 and transmits the signal processed by the processing unit 16 as an output signal.

  Next, the configuration of each unit of the signal processing device 20 will be described.

  The communication unit 21 is for receiving an output signal transmitted from the external device 10. In addition, the communication unit 21 transmits and receives information such as commands so that the external device 10 and the processing device 20 communicate with each other. The communication unit 21 receives an output signal from the external device 10. The control unit 23 separates the received output signal, and transmits an audio / video signal to the processing unit 22, an operation signal to the setting unit 24, and an identification signal to the identification unit 22. The control unit 23 also receives an operation by the operation unit 25 and transmits the operation content to the setting unit 24 as an operation signal.

  The communication unit 21 establishes a connection with the external device 10 to start receiving an output signal including the output signal, the audio / video signal, and the operation signal. The communication unit 21 receives the identification information of the external device 10 when the external device 10 is connected to the IEEE 1394 bus or when a bus reset is performed.

  The received identification signal is transmitted to the identification unit 26 and used to identify the external device 10 that is the transmission source. The identification information may be a model ID, a manufacturer number, a model name, a reproduction signal, or other identifiers.

  After the connection with the external device 10 is established, the communication unit 21 receives the audio / video signal and the operation signal synchronously or asynchronously. For audio / video signals for real-time transmission, it is preferable to use isochronous communication that is synchronous communication. Asynchronous communication, which is asynchronous communication, is preferably used for asynchronous data such as still images and control commands. Communication may be performed by mixing isochronous communication and asynchronous communication.

  The output signal received by the communication unit 21 is separated into an audio / video signal, an operation signal, and an identification signal by the communication unit 21, and transmitted to the processing unit 22, the setting unit 24, and the identification unit 26. In addition, the structure which isolate | separates a required signal may be sufficient as the process part 22, the setting part 24, and the identification part 26 each receive an output signal, without isolate | separating the output signal received by the communication part 21.

  For the connection, an AV signal connection management rule defined in IEC61883 may be used. For the operation signal, IEC 61883-1 protocol, AV / C command, or the like may be used. A connection request for establishing a connection between the external device 10 and the signal processing device 20 may be transmitted from the external device 10 or may be transmitted from the signal processing device 20.

  The processing unit 22 performs signal processing on the input audio / video signal and outputs it. The signal processing described above is, for example, processing of an audio signal, such as changing the volume setting for each frequency such as bass, treble, and spectrum, and changing parameters such as phase, delay, matrix, and surround in a plurality of channels. In the processing for the image signal, for example, the image quality such as contrast, image quality, color density, hue, and color is changed.

  The processing unit 22 performs signal processing on the input audio / video signal based on an instruction from the setting unit 24 and outputs the signal to the output unit 40. Further, the signal processing setting information added to the audio / video signal is notified to the writing unit 34 and stored in the storage unit 30 in association with the identification information.

  The setting unit 24 is for instructing setting of a processing method performed by the processing unit 22 based on an operation signal input by the operation unit 12 on the external device 10. The operation signal is transmitted from the external device 10 to the signal processing device 20. The setting unit 24 sets signal processing to be added to the audio / video signal by the processing unit 22 based on the setting information read from the storage unit 30 by the reading unit 32.

  The identification unit 26 is for identifying the external device 10 connected to the signal processing device 20. The identification unit 26 extracts an identification signal from the signal output from the external device 10 and identifies the external device 10. The identified identification information is transmitted to the reading unit 32 and the writing unit 34.

  The storage unit 30 stores the identification information identified by the identification unit 26 and the setting information of the processing method used for processing the audio / video signal by the processing unit 22 in association with each other. The reading unit 32 reads corresponding setting information from the storage unit 30 based on the identification information from the identification unit 26. The writing unit 34 writes the identification information from the identification unit 26 and the setting information from the processing unit 22 in association with each other in the storage unit 30.

  The output unit 40 is for outputting a signal subjected to signal processing, and is an output terminal for connecting to an external output device such as a speaker or a display. Alternatively, the output unit 40 may be an output device such as a speaker or a display, for example.

  As described above, when a signal is input from the previously set external device 10, the signal processing device 20 according to the present embodiment identifies the external device 10 and calls the corresponding setting from the storage unit 30. Since the same signal processing as the setting can be applied to the processing unit 22, the signal processing device 20 with reduced setting labor can be realized.

  Next, the setting method and the reproducing method of this embodiment will be described with reference to FIG. FIG. 3 is a flowchart showing the processing flow of the signal processing system in the present embodiment.

  In S101, the external device 10 is first connected to the IEEE 1394 bus 60 by bus. At this time, the identification information of the external device 10 is transmitted to the entire bus. The communication unit 21 of the signal processing device 20 receives the identification information of the connected external device 10 and transmits it to the identification unit 26.

  In S102, the identification information of the connected external device 10 is acquired by the bus manager that manages the address and node on the bus. The bus manager is responsible for any external device 10 or signal processing device 20 that is a node connected to the bus.

  In IEEE 1394, a bus reset occurs when a node is inserted or removed, and the bus configuration is dynamically changed. When a bus reset occurs, assignment of addresses and node functions on the bus is automatically determined, enabling plug and play.

  In S103, the signal processing device 20 and the external device 10 start a connection, and the signal processing device 20 identifies the output source external device 10 that outputs a signal as a signal output device by establishing the connection.

  In S <b> 104, the setting unit 24 checks whether the setting information corresponding to the specified external device 10 is recorded in the storage unit 30. If it is recorded (YES in S104), the process proceeds to S105. If not recorded (NO in S104), the process proceeds to S106.

  In S105, when the setting information corresponding to the identified external device 10 is stored in the storage unit 30 (YES in S104), the setting information is applied to the processing unit 22, and the process proceeds to S107.

  In S106, when there is no identification information and setting information corresponding to the external device 10 specified as the output source (NO in S104), the setting unit 24 applies a predetermined default setting to the processing unit 22, and performs processing. Advances to S107.

  In S <b> 107, the processing unit 22 performs signal processing using the applied setting and outputs a signal to the output unit 40.

  In S108, the signal output from the external device 10 is stopped, and the signal processing device 20 performs a process of releasing and terminating the connection between the output source external device 10 and the signal processing device 20.

  In S109, when the connection is terminated, it is confirmed whether the signal processing setting of the processing unit 22 has been changed between the start and the end of the connection. If the setting has been changed (YES in S109), the process proceeds to S110. If the setting has not been changed (NO in S109), the process proceeds to S11.

  In S110, the writing unit 34 stores the identification information of the external device 10 and the setting information of the processing unit 22 in association with each other in the storage unit 30, and the process proceeds to S111.

  In S <b> 111, it is determined whether to continue the same external device 10 connection or to connect to another external device 10. If the connection is made again (YES in S111), the process proceeds to S103 and the above process is repeated.

  If the connection is not continued (NO in S111), the setting process is terminated.

  As described above, when an output signal is input from any one of the external devices 10 to the signal processing device 20, the external device 10 that is the transmission source of the output signal can be identified and switched using the establishment of a connection.

  Next, setting of signal processing performed by the processing unit 22 will be described with reference to FIG. FIG. 5 is a diagram showing a correspondence relationship of setting examples of signal processing used in the processing unit 22 on the signal processing device 20 in a table format.

  The first column represents the model of the external device 10 and shows the devices A, B, C, D, and E. Each row represents setting information corresponding to each external device 10, and the upper row represents audio setting setting information corresponding to each external device, and the lower row represents video setting setting information for each model.

  The audio settings illustrate settings for bass, treble, spectrum analyzer, phase, delay, matrix, and surround. The video settings exemplify settings for contrast, image quality, color depth, hue, and color. In the table, each setting parameter is displayed as an integer, but it is not limited to this as long as it defines the effect setting.

  In FIG. 5, the setting for the audio signal and the setting for the video signal are shown as being stored independently.

  In the present embodiment, an example in which the operation unit 12 mounted on the external device 10 is used as a user interface for setting effect parameters to be added by the processing unit 22 is not limited to this. The signal processing device 20 may be provided with the operation unit 12.

  In the present embodiment, the signal processing system 1 includes the external device 10 and the signal processing device 20, but is not limited thereto. The output device 50 such as a liquid crystal television may include the signal processing device 20 that performs signal processing.

  Alternatively, the external device 10 including the reproducing unit 14 such as a DVD player includes a processing unit 22 that performs signal processing, a setting unit 24, a storage unit 30, and the like, and receives an output signal from the external device 10 and performs signal processing. In addition, it may be configured to transmit to the output device 50.

[Embodiment 2]
Next, still another embodiment of the present invention will be described with reference to FIG. Compared with the signal processing apparatus 10 shown in FIGS. 1 to 3, the signal processing apparatus 10 of the present embodiment includes the content and timing of the output signal received from the external apparatus 10 and the communication unit of the signal processing apparatus 20 that receives the output signal. 21 functions are partially different.

  Specifically, the external device 10 and the signal processing device 20 are connected without using a connection. The external device 10 outputs an output signal including an identification signal, and the communication unit 21 separates an identification signal for identifying the external device 10 from the input signal and transmits the identification signal to the identification unit. Other configurations are the same. In addition, the same code | symbol is attached | subjected to the structure which has the function similar to the structure demonstrated in the said embodiment, and the description is abbreviate | omitted. FIG. 4 is a flowchart showing a processing flow of the signal processing system in the present embodiment.

  In step S <b> 201, first, the external device 10 is bus-connected to the IEEE 1394 bus 60. In S202, the signal processing device 20 acquires identification information of the external device.

  In S <b> 203, an output signal including the identification signal is output from the reproduction unit 14 of the external device 10. In S204, the transmission source external device is specified from the identification signal.

  In S <b> 205, the setting unit 24 checks whether the setting information corresponding to the external device 10 specified as the transmission source is recorded in the storage unit 30. If it is recorded (YES in S205), the process proceeds to S206. If not recorded (NO in S205), the process proceeds to S207.

  In S206, when the setting information corresponding to the identified external device 10 is stored in the storage unit 30 (YES in S205), the setting information is applied to the processing unit 22, and the process proceeds to S208.

  In S207, when there is no identification information and setting information corresponding to the specified external device 10 (NO in S205), the setting unit 24 applies a predetermined default setting to the processing unit 22, and the processing proceeds to S208. move on.

  In S <b> 208, the processing unit 22 performs signal processing using the applied settings and outputs a signal to the output unit 40.

  In S209, the reproduction of the external device 10 is stopped, and the transmission of the signal output is ended.

  In S210, it is confirmed whether the signal processing setting of the processing unit 22 has been changed between the start of playback and the end of playback. If the setting has been changed (YES in S210), the process proceeds to S211. If the setting has not been changed (NO in S210), the process proceeds to S212.

  In S211, the writing unit 34 stores the identification information of the external device 10 and the setting information of the processing unit 22 in association with each other in the storage unit 30, and the process proceeds to S212.

  In S212, it is determined whether or not an output signal including another identification signal is output from the reproduction unit 14 of the external device 10, and if it is output (YES in S212), the process proceeds to S203, and the above process is performed. repeat.

  When an output signal including another identification signal is not output from the reproduction unit 14 of the external device 10 (NO in S212), the signal processing is terminated.

  As described above, by using the identification signal included in the output signal, it is possible to identify the transmission source external device and switch the setting even when the connection is not used.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. That is, embodiments obtained by combining technical means appropriately changed within the scope of the claims are also included in the technical scope of the present invention.

  Finally, each block of the signal processing device 20, particularly the processing unit 22, the setting unit 24, the identification unit 26, the reading unit 32, and the writing unit 34 may be configured by hardware logic, as follows: Alternatively, it may be realized by software using a CPU.

  That is, the signal processing device 20 includes a CPU (central processing unit) that executes instructions of a control program that realizes each function, a ROM (read only memory) that stores the program, and a RAM (random access memory) that expands the program. And a storage device (recording medium) such as a memory for storing the program and various data. An object of the present invention is a recording medium on which a program code (execution format program, intermediate code program, source program) of a control program of the signal processing device 20 which is software for realizing the functions described above is recorded so as to be readable by a computer. This can also be achieved by supplying the signal processing apparatus 20 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. Card system such as IC card, IC card (including memory card) / optical card, or semiconductor memory system such as mask ROM / EPROM / EEPROM / flash ROM.

  The signal processing device 20 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Also, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  As described above, it is possible to identify an external device, store identification information of the identified external device and signal processing setting information in association with each other, and apply settings to the external device based on the stored setting information. It can be suitably used as an amplifier or receiver of an AV system.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, showing an embodiment of the present invention, is a block diagram showing a main configuration of a signal processing device. It is the schematic which shows the structural example of the signal processing system using the said signal processing apparatus. It is a flowchart which shows the flow of the setting method of the signal processing used with the said signal processing apparatus, and shows the process sequence in the case of establishing a connection between an external device and a signal processing apparatus. It is a flowchart which shows the flow of the setting method of the signal processing used with the said signal processing apparatus, and shows the process sequence when not using the connection between an external device and a signal processing apparatus. It is a figure which shows the correspondence of the example of a setting of the signal processing used with the said signal processing apparatus in a table format.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Signal processing system 10 External apparatus 12 Operation part (operation means)
14 playback unit 20 signal processing device 21 communication unit (communication means)
22 Processing unit (signal processing means)
23 control part 24 setting part (setting means)
25 Operation part (operation means)
26 Identification part (identification means)
30 storage unit (storage means)
32 Reading section (reading means)
34 Writing section (writing means)
40 Output Unit 50 Output Device 52 Display 54 Speaker 60 IEEE1394 Bus

Claims (14)

A signal processing device comprising signal processing means for processing a signal input from an external device connected by a bus,
Storage means for storing information;
Identifying means for identifying the external device from which the signal is transmitted;
Setting means for setting signal processing of the signal processing means;
Writing means for associating the identification information of the external device identified by the identification means and the setting information set by the setting means to the storage means;
Reading means for reading the setting information corresponding to the identification information from the storage means,
The signal processing apparatus, wherein the setting means sets the signal processing based on setting information read by the reading means.   The signal processing apparatus according to claim 1, wherein the signal input from the external apparatus is at least one of an audio signal, a video signal, and a data signal.   The signal processing apparatus according to claim 1, further comprising a communication unit that establishes a connection with the external device based on the identification information identified by the identification unit.   The signal processing apparatus according to claim 3, wherein the communication unit establishes a connection by transmitting a connection request to the external apparatus.   The signal processing apparatus according to claim 3, wherein the communication unit establishes a connection in response to a connection request from the external apparatus.   The signal processing apparatus according to claim 3, wherein the communication unit is connected to the external apparatus by a bus according to IEEE 1394.   The writing unit writes the identification information and the setting information in association with each other when the bus connection is reset or when the communication unit releases the connection. Item 4. The signal processing device according to Item 3.   The signal processing apparatus according to claim 1, further comprising operation means for changing the setting of the signal processing.   A signal processing system comprising: the signal processing device according to claim 1; and an external device that outputs a signal to the signal processing device.   The signal processing system according to claim 6, wherein the external device further includes an operation unit that transmits an operation signal for changing the setting of the signal processing to the setting unit. A signal processing method in a signal processing device for processing a signal input from an external device connected by a bus,
The signal processing device identifies the external device that is the transmission source of the signal, sets signal processing for the signal, and stores identification information of the identified external device and setting information of the set signal processing in association with each other. When the external device outputs the signal again, the external device of the transmission source is identified, the setting information stored in association with the external device is read from the storage device, and the setting information is read based on the read setting information. And a signal processing method. A signal processing method in a signal processing device for processing a signal input from an external device connected by a bus,
The signal processing device identifying the external device connected to the bus;
Establishing a connection with the external device and setting signal processing for the input signal;
When resetting the bus connection or releasing the connection, the identification information of the identified external device and the setting information of the set signal processing are associated with each other and stored in a storage unit;
When establishing a connection again with the external device, the external device that established the connection is identified, the setting information stored in association with the external device is read from the storage means, and signal processing is performed based on the read setting information A signal processing method comprising: steps.   A signal processing program for operating the signal processing apparatus according to claim 1, wherein the signal processing program causes a computer to function as each of the units.   A computer-readable recording medium on which the signal processing program according to claim 10 is recorded.

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