JP2001352232A - Receiver and method for regulating search sensitivity - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiver capable of easily regulating a search sensitivity by eliminating a necessity of forming an opening for inserting a regulating jig in a tuner module or a housing by obviating a necessity of mounting a variable resistor or the like for regulating the sensitivity in the module. SOLUTION: The receiver comprises a capturing means for detecting a reference S level output from the tuner module 3 by applying a radio wave of a reference field strength as a reference of the search sensitivity and capturing the reference S level, a display unit 7 for displaying the S level, an EEPROM 5 for storing the correction value input by calculating with the displayed level as a base, an S level correction means for correcting the S level output from the module 3 based on the called correction value, and a search processing means for search processing based on the corrected S level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving apparatus such as a radio having a so-called search function for automatically detecting a radio wave whose electric field intensity has reached a predetermined electric field intensity level, and a search sensitivity. The adjustment method.

[0002]

2. Description of the Related Art Some conventional receivers include radio waves whose electric field intensity reaches a predetermined electric field intensity level from radio waves received from an antenna (the electric field intensity reaches a level that is easy for a listener to hear without being buried in noise). There is known a device having a so-called search function for automatically detecting a broadcast station's radio wave). Such a search function is often provided in an in-vehicle receiving device, which is particularly difficult to perform a tuning operation during driving. These receiving devices are often integrated with a CD player or the like to be commercialized, and are modularized tuners (hereinafter referred to as tuner modules) and C
A microcomputer shared with a D player or the like is built in a housing, and is usually commercialized with an operation switch and a display panel provided on a front panel of the housing for a user to select a broadcasting station.

[0003] In the tuner module, in the manufacturing process, the detection sensitivity when detecting radio waves differs for each product due to the dispersion of the performance of the components.
In other words, the electric field intensity level (search sensitivity) for detecting the radio wave when implementing the search function varies from product to product. Therefore, conventionally, a reference test radio wave having a predetermined electric field intensity is actually applied to each manufactured tuner module from the connection terminal of the antenna, and the S level output from the tuner module is measured.
An operation of adjusting a variable resistor and the like for adjusting the search sensitivity provided in the tuner module is performed so that the search sensitivity falls within an appropriate range. Further, when a finished product of a receiving device is manufactured by incorporating the tuner module into a housing, the environment around the tuner module changes due to commercialization. In order to adjust the search sensitivity, it is customary to adjust the variable resistor and the like again.

[0004]

As described above, the prior art requires a complicated operation for adjusting the search sensitivity to an optimum value for each tuner module. Moreover, as a prerequisite for performing this adjustment work, it is necessary to provide a variable resistor for adjusting the search sensitivity for each tuner module, and the variable resistor and the like are mounted on a mounting board constituting the tuner module. It is necessary to secure the space to be used. This is
This is an obstacle to reducing the size of the tuner module.

Further, since the search sensitivity is adjusted by operating the variable resistor or the like with a driver or the like after assembling the tuner module, the resistance value of the variable resistor can be adjusted from the outside. An opening for inserting the adjustment jig such as the driver has to be provided in the tuner module in advance. Further, even in the final stage where the tuner module or the like is incorporated in a housing and commercialized, it is necessary to adjust the search sensitivity of the tuner module for each product, so that an adjustment jig is inserted from outside the housing. It is also necessary to provide an opening in the housing in advance. Therefore, the design restrictions of the tuner module and the housing are increased, and the provision of the opening causes a reduction in the physical and electrical shielding effect of the receiving device.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and eliminates the need for mounting the variable resistor or the like on a tuner module for adjusting a search sensitivity, thereby making an adjustment jig for a tuner module or a housing. It is an object of the present invention to provide a receiving apparatus and a search sensitivity adjusting method which can eliminate the need for forming an insertion opening and can easily adjust the search sensitivity.

[0007]

Means for Solving the Problems and Their Effects To solve the above problems, a receiving apparatus (1) according to the present invention comprises a tuning means for performing a tuning process on a received radio wave, and an S level output from the tuning means. And a control means for controlling the tuning means by receiving the control signal, an operating means for transmitting an operation signal to the control means, and a display means connected to the control means. Capturing means for detecting a reference S level output from the tuning means by application of radio waves having a reference electric field strength of, and loading the reference S level; display means for displaying the reference S level; A storage means for storing the input correction value calculated based on the level, and the correction value stored in the storage means during search processing. S for correcting the S level output from said tuning means based on calling the correction value
A level correction means, and a level correction means based on the corrected S level.
And a search processing means for performing a search process.

According to the above receiver (1), in the search sensitivity adjustment step before the product is shipped, the operator can apply a radio wave of the reference electric field strength serving as a reference of the search sensitivity to the tuning means. For example, the reference S level is displayed on the display. The operator is expected to output from the tuning means by applying the reference radio wave, and usually recognizes the expected reference S level stored in advance in the ROM of the control means, and The correction value can be easily calculated by comparing with the expected reference S level. The operator completes the operation by operating the operation means and storing the correction value in the storage means. Thereafter, in the search process after the product is shipped, the correction value stored in the storage means is called, and the S level output from the tuning means is automatically set based on the called correction value. Is corrected by the S level correction means so as to conform to the expected reference S level,
The search process is performed based on the corrected S level.

Therefore, according to the receiving device (1), it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity, which is conventionally provided for each tuner module. , Can be reduced by the mounting space for the variable resistor and the like.
For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage where the tuning means and the like are incorporated in the housing and commercialized, there is no need to adjust the search sensitivity of the tuning means for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance. Therefore, it is possible to eliminate the restriction on the design of the tuning means and the housing, and it is not necessary to provide the opening, so that the physical and electrical shielding effect in the receiving device can be improved. it can.

[0010] Also, a receiving apparatus (2) according to the present invention includes a tuning means for performing a tuning process on a received radio wave, a control means for taking in the S level output from the tuning means and controlling the tuning means, In a receiving apparatus provided with an operation means for sending an operation signal to the means, and a display means connected to the control means, an output from the tuning means is obtained by applying a radio wave having a reference electric field strength serving as a reference for search sensitivity. Capturing means for detecting the reference S level to be received and capturing the reference S level; and outputting the captured reference S level and the reference electric field strength. Correction value calculation means for calculating a correction value by comparing with the expected reference S level, storage means for storing the calculated correction value, and a search. At the time of processing, the correction value stored in the storage means is called, the S level correction means for correcting the S level output from the tuning means based on the called correction value, and the corrected S level And a search processing means for performing a search process based on the search process.

According to the above receiver (2), in the search sensitivity adjustment step before the product is shipped, if the operator applies a radio wave of the reference electric field strength serving as the reference of the search sensitivity to the tuning means. Is expected to be output from the tuning means by application of the reference radio wave,
Normally, an expected reference S level stored in advance in the ROM of the control means is called, and the reference S level is compared with the expected reference S level to automatically calculate a correction value. Therefore, the operator can complete the operation of adjusting the search sensitivity only by applying the radio wave of the reference electric field strength serving as the reference of the search sensitivity to the tuning means. afterwards,
In a search process after product shipment, the correction value stored in the storage means is called, and the S level output from the tuning means is automatically set based on the called correction value. The S level is corrected by the S level correcting means so as to conform to the expected reference S level, and a search process is performed based on the corrected S level.

Therefore, according to the above-mentioned receiving apparatus (2), the operator can complete the search sensitivity adjusting operation with a simpler operation than in the above-mentioned receiving apparatus (1). Further, it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity which is conventionally provided for each tuner module, and the substrate area of the tuning means is reduced by the mounting space of the variable resistor or the like. Can be. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage where the tuning means and the like are incorporated in the housing and commercialized, there is no need to adjust the search sensitivity of the tuning means for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance.
Therefore, it is possible to eliminate the restriction on the design of the tuning means and the housing, and it is not necessary to provide the opening, so that the physical and electrical shielding effect in the receiving device can be improved. it can.

[0013] Also, a receiving device (3) according to the present invention comprises a tuning means for performing a tuning process on a received radio wave, a control means for taking in the S level output from the tuning means and controlling the tuning means, In a receiving apparatus provided with an operation means for sending an operation signal to the means, and a display means connected to the control means, by applying a radio wave having a reference electric field strength serving as a reference of a search sensitivity, the tuning means is used. Fetching means for detecting the output reference S level and fetching the reference S level; storage means for storing the fetched reference S level; and the reference S stored in the storage means during search processing. A search processing means for calling a level and performing a search process based on the called reference S level.

According to the above receiver (3), in the search sensitivity adjustment step before the product is shipped, if the operator applies a radio wave of the reference electric field intensity serving as a reference of the search sensitivity to the tuning means. The reference S level actually output from the tuning means by application of the reference radio wave is automatically stored in the storage means. Thereafter, in a search process after product shipment, the reference S level stored in the storage means is called, and the called reference S level is compared with the S level output from the tuning means. Then, the search process is performed. Therefore, the operator can complete the operation of adjusting the search sensitivity only by applying the radio wave of the reference electric field strength serving as the reference of the search sensitivity to the tuning means.

Therefore, according to the receiving device (3), the operator can complete the search sensitivity adjusting operation with a simpler operation than in the receiving device (1). Further, it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity which is conventionally provided for each tuner module, and the substrate area of the tuning means is reduced by the mounting space of the variable resistor or the like. Can be. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage where the tuning means and the like are incorporated in the housing and commercialized, there is no need to adjust the search sensitivity of the tuning means for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance.
Therefore, it is possible to eliminate the restriction on the design of the tuning means and the housing, and it is not necessary to provide the opening, so that the physical and electrical shielding effect in the receiving device can be improved. it can.

Further, a receiving apparatus (4) according to the present invention is characterized in that, in any of the above-mentioned receiving apparatuses (1) to (3), the storage means is a nonvolatile storage means. According to the above receiver (4), since the storage means is non-volatile, the power of the receiver is turned off, and when the power is turned on again, the correction value of the search sensitivity and In addition, it is not necessary to perform the input operation of the reference S level again. Therefore, the correction value and the reference S level can be surely reflected in the search processing regardless of whether the power of the receiving apparatus is turned on or off. Therefore, the user can always use the receiving apparatus that performs the search processing with the optimum search sensitivity. Can be provided.

Also, in the receiving apparatus (5) according to the present invention, in any one of the above-mentioned receiving apparatuses (1) to (4), the reference electric field strength, which is a reference of the search sensitivity, is a binary reference. It is characterized by. According to the receiving device (5), a broadcast station that cannot be detected based on the strong electric field standard may be detected based on the weak electric field standard, and the selection of the broadcast station that can be detected by the search process may be performed. It is possible to increase the width.

Further, in the search sensitivity adjusting method (1) according to the present invention, there is provided a reference radio wave applying step of applying a radio wave of a reference electric field strength serving as a reference of the search sensitivity, and tuning by applying the reference radio wave. A correction value calculating step of calculating a correction value based on a reference S level output from the means, a correction value storing step of storing the calculated correction value in a storage means, The stored correction value is called, an S level correction step of correcting the S level output from the tuning means based on the called correction value, and a search process is performed based on the corrected S level. And a search processing step.

According to the search sensitivity adjusting method (1) described above, in the search sensitivity adjusting step before the product is shipped, the operator transmits the radio wave of the reference electric field intensity serving as the reference of the search sensitivity. The search value is applied to the tuning means, and a correction value of the search sensitivity is calculated based on the reference S level outputted from the tuning means by this application, and the correction value is stored in the storage means by operating the operation means. It should be done. Thereafter, in the search process after the product is shipped, the correction value stored in the storage means is called, and the S level output from the tuning means is automatically set based on the called correction value. Then, based on the corrected S level, an optimum search process specific to the receiving apparatus is automatically performed.

Therefore, according to the search sensitivity adjusting method (1), it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity which is conventionally provided for each tuner module. The substrate area of the means can be reduced by the mounting space for the variable resistor or the like. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, so that the resistance value of the variable resistor can be adjusted from the outside,
It is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance, and furthermore, in the final stage when the tuning means and the like are incorporated into a housing and commercialized, the tuning is performed for each product. There is no need to adjust the search sensitivity of the means, and it is unnecessary to provide an opening in the housing in advance for inserting an adjustment jig from outside the housing. Therefore,
Restrictions on the design of the tuning means and the housing can be eliminated, and the physical and electrical shielding effect in the receiving device can be improved by eliminating the need to provide the opening.

The search sensitivity adjusting method (2) according to the present invention includes a reference radio wave applying step of applying a radio wave of a reference electric field intensity serving as a reference of the search sensitivity, and tuning by applying the reference radio wave. A reference S level output from the means;
A correction value calculating step of calculating a correction value by comparing with the expected reference S level stored in advance, which is expected to be output from the tuning means by application of the reference radio wave, and the calculated correction value And a correction value storing step of storing the correction value stored in the storage means at the time of search processing, and an S level output from the tuning means based on the called correction value. It is characterized by including an S level correction step for correcting and a search processing step for performing a search process based on the corrected S level.

According to the search sensitivity adjusting method (2) described above, in the search sensitivity adjusting step before the product is shipped, the operator tunes the radio wave of the reference electric field intensity which is the reference of the search sensitivity. It is only necessary to apply the voltage to the control means, and after that, it is expected that the signal will be output from the tuning means by the application of the reference radio wave.
The expected reference S level stored in advance is called,
The reference S level is compared with the expected reference S level, and the correction value is automatically calculated. Thereafter, in the search process after the product is shipped, the correction value stored in the storage means is called, and the S level output from the tuning means is automatically set based on the called correction value. The optimum search processing specific to the receiving apparatus is performed based on the corrected S level.

Therefore, according to the above search sensitivity adjusting method (2), the above search sensitivity adjusting method (1) is adopted.
The operator can complete the search sensitivity adjustment operation with a simpler operation than in the case of (1), and a variable resistor for adjusting the search sensitivity which is conventionally provided for each tuner module. It is not necessary to equip the tuning means, and the substrate area of the tuning means can be reduced by the mounting space of the variable resistor or the like. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage where the tuning means and the like are incorporated in the housing and commercialized, there is no need to adjust the search sensitivity of the tuning means for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance. Therefore, it is possible to eliminate the restriction on the design of the tuning means and the housing, and to improve the physical and electrical shielding effect in the receiving device by eliminating the need to provide the opening. .

Further, in the search sensitivity adjusting method (3) according to the present invention, a reference radio wave applying step of applying a radio wave of a reference electric field intensity serving as a reference of the search sensitivity, and tuning by applying the reference radio wave. A reference S level storage step of storing the reference S level output from the means in the storage means; and in the search process, the reference S level stored in the storage means is called and based on the called reference S level. T
And a search process for performing a search process.

According to the search sensitivity adjusting method (3) described above, in the search sensitivity adjusting step before the product is shipped, the operator transmits the radio wave of the reference electric field intensity serving as the reference of the search sensitivity. When the reference S level is applied to the tuning means, the reference S level actually output from the tuning means by the application of the reference radio wave is automatically stored in the storage means. Thereafter, in a search process after product shipment, the reference S level stored in the storage means is called, and the called reference S level is compared with the S level output from the tuning means. Then, an optimum search process unique to the receiving apparatus is performed. Therefore, the operator can complete the operation of adjusting the search sensitivity only by applying the radio wave of the reference electric field strength serving as the reference of the search sensitivity to the tuning means.

Therefore, according to the search sensitivity adjusting method (3), the search sensitivity adjusting method (1) is used.
The operator can complete the search sensitivity adjustment operation with a simpler operation than in the case of (1), and a variable resistor for adjusting the search sensitivity which is conventionally provided for each tuner module. It is not necessary to equip the tuning means, and the substrate area of the tuning means can be reduced by the mounting space of the variable resistor or the like. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the downsizing of the tuning means, the downsizing of the receiving apparatus can be achieved. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuning means in advance so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage where the tuning means and the like are incorporated in the housing and commercialized, there is no need to adjust the search sensitivity of the tuning means for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance. Therefore, it is possible to eliminate the restriction on the design of the tuning means and the housing, and to improve the physical and electrical shielding effect in the receiving device by eliminating the need to provide the opening. .

The search sensitivity adjusting method (4) according to the present invention comprises the search sensitivity adjusting methods (1) to (4) described above.
(3) In any one of (3), the reference electric field intensity as a reference of the search sensitivity is a binary reference. According to the search sensitivity adjustment method (4), a broadcast station that cannot be detected by the strong electric field standard can be detected by the weak electric field standard, and a broadcast station that can be detected by the search processing can be detected. It is possible to expand the range of station selection.

Also, the receiving apparatus (6) according to the present invention comprises: tuning means for performing a tuning process on a received radio wave; control means for taking in the S level output from the tuning means to control the tuning means; In a receiving apparatus provided with an operation means for sending an operation signal to the means, and a display means connected to the control means, an output from the tuning means is obtained by applying a radio wave having a reference electric field strength serving as a reference for search sensitivity. A reference S level to be detected to take in the reference S level; and a malfunction judging means for judging a circuit malfunction of the tuning means based on the reference S level output from the tuning means. It is characterized by:

According to the above receiving device (6), at the stage of inspection before shipping the product, the malfunction determining means
Circuit malfunction of the tuning means can be easily determined based on the reference S level, and defective products can be quickly collected and sent for repair.

Further, in the receiving apparatus (7) according to the present invention, in any one of the above-mentioned receiving apparatuses (1) to (5), the tuning is performed by applying a radio wave of a reference electric field intensity serving as a reference of a search sensitivity. Capturing means for detecting the reference S level output from the means and capturing the reference S level; and malfunction determining means for determining a circuit malfunction of the tuning means based on the reference S level output from the tuning means. It is characterized by having. According to the above-mentioned receiving device (7), the above-mentioned receiving devices (1) to
(5) In addition to the effect in any one of (5), in the inspection stage before the product is shipped, the malfunction determining means determines the reference S
A circuit malfunction of the tuning means can be easily determined based on the level, and a defective product can be quickly collected and sent for repair.

Further, the receiving apparatus (8) according to the present invention, in the above-mentioned receiving apparatus (6) or (7), further comprises a display output means for displaying the judgment result by the malfunction judging means on the display means. It is characterized by: According to the receiving device (8) described above, in addition to the effects of the receiving device (6) or (7), the worker of the production line can use the judgment result by the malfunction judging means displayed on the display means. In addition, it is possible to easily and quickly determine a circuit malfunction of the tuning means, so that subsequent measures can be taken quickly.

Further, a receiving device (9) according to the present invention comprises a tuning means for performing a tuning process on a received radio wave, a control means for taking in the S level output from the tuning means and controlling the tuning means, In a receiving apparatus provided with an operation means for transmitting an operation signal to the means and a display means connected to the control means, an electric field corresponding to a radio wave of a reference electric field strength is applied to the tuning means with power-on. And a malfunction determining means for determining a circuit malfunction of the tuning means based on the reference S level output from the tuning means. According to the receiving device (9) described above, in the use stage of the receiving device after the product is shipped, the consumer can easily know the circuit malfunction of the tuning unit by the malfunction determining unit, and determines whether the product is a faulty product. It is possible to quickly judge whether or not to perform the repair quickly.

[0033] The receiving apparatus (10) according to the present invention comprises:
In any of the above receiving devices (1) to (8),
When the power is turned on, a circuit malfunction of the tuning unit is determined based on an electric field application unit that applies an electric field corresponding to a radio wave of a reference electric field strength to the tuning unit, and the reference S level output from the tuning unit. And a malfunction determining means. According to the above-described receiving device (10), the above-described receiving devices (1) to (1)
In addition to the effect of any one of the above (8), in the use stage of the receiving device after the product is shipped, the consumer can easily know the circuit malfunction of the tuning means by the malfunction determining means and determine whether the product is a faulty product. It is possible to quickly judge whether or not to perform the repair quickly.

Further, the receiving apparatus (11) according to the present invention comprises:
The above-mentioned receiving device (9) or (10) is characterized in that it comprises a display output means for displaying the judgment result by the malfunction judgment means on the display means. According to the above-described receiving device (11), in addition to the effects of the above-described receiving device (9) or (10), a consumer can use the above-described receiving device based on the determination result by the malfunction determining unit displayed on the display unit. The circuit malfunction of the tuning means can be easily and quickly determined, and the subsequent measures can be performed quickly.

[0035]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a receiving apparatus and a search sensitivity adjusting method according to the present invention. FIG. 1 is a block diagram showing an example of a schematic configuration of a receiving apparatus according to Embodiment (1). A tuner module (T / M) 3 as a tuning means from a signal generator (SG) 2 via an antenna jack 3a.
2 shows a state in which the reference test radio wave is applied. This signal generator 2 provides a reference electric field strength to the tuner module 3 (a binary level when a search operation is performed based on a binary reference of a strong electric field and a weak electric field).
Is applied to the tuner module 3.

The tuner module 3 normally receives radio waves received by an antenna (not shown) into the tuner module 3 via the antenna jack 3a (other than when the search sensitivity is adjusted). Receives a control signal from the microcomputer 4 based on the operation state of the operation unit 6, tunes to a radio wave of a predetermined frequency, and outputs the tuned radio signal to an amplifier (not shown); A sound is output from a speaker (not shown), and the electric field intensity level of the radio wave is converted into a voltage value (S level) and output to the microcomputer 4. The microcomputer 4 as the control means controls the tuner module 3 in order to receive various S levels from the tuner module 3 and perform various processes (for example, a search process and a scan process) based on an operation from the operation unit 6.

The microcomputer 4 is connected to an operation unit 6, a display unit 7 including a liquid crystal display screen and the like, and an EEPROM 5 as a non-volatile storage unit, and detects an electric field intensity level of a receiving broadcast station (radio wave). In a search process of searching for a broadcast station having a field strength of a predetermined level or more,
The microcomputer 4 detects the electric field strength level of the radio wave transmitted from each broadcasting station by the control operation described later, and searches until the radio wave of the broadcasting station higher than a predetermined electric field strength level is detected. It is performed on a binary basis of the electric field level and the weak electric field level (may be performed on a single basis).

That is, when performing a binary-based search, the tuner module 3 first searches for a radio wave transmitted from each broadcasting station at a strong electric field level, and performs a search at this strong electric field level. If the broadcast station (radio wave) can be detected, the search is stopped at the time when the broadcast station can be detected, and in the search at the strong electric field level, if the broadcast station cannot be detected, the search sensitivity is increased and the search electric field level is increased. Lower),
The search is performed at a weak electric field level. As in the case of the search at the weak electric field level, if the search at the weak electric field level can detect the broadcast station (radio wave), the search is stopped at the time when the search is possible, and if not, the search is not performed. Perform a search for all frequencies. In both the search at the strong electric field level and the search at the weak electric field level, if the detected broadcasting station is not the desired broadcasting station of the listener, the listener presses the search button of the operation unit 6 again. Search operation is performed to search.

The microcomputer 4 includes a CPU, a ROM, a RAM and the like (all not shown). The microcomputer 4 controls the EEPROM 5 to store a search sensitivity correction value, and performs an operation for correcting the S level output from the tuner module 3 using the search sensitivity correction value. Have been.

The operation unit 6 is provided with buttons, switches, and keys (none of which are shown) for the user to select a desired broadcasting station. Also, the manufacturer
Is equipped with buttons, switches, and keys (all not shown) for switching to the search sensitivity adjustment setting mode in the search sensitivity adjustment process. For example, when a switch on the operation unit 6 is pressed multiple times, the mode is switched from the normal operation mode to the search sensitivity adjustment setting mode. The display unit 7
The frequency of the broadcasting station selected by the user operating the operation unit 6, the frequency of the broadcasting station detected by the search processing, and the like are displayed. The display unit 7 and the operation unit 6 are provided on a front panel (not shown) of, for example, a box-shaped housing (not shown) of the receiving device 1. The tuner module 3, the microcomputer 4, and the EEPROM 5
Are housed in the housing of the receiving device 1.

Next, the operation performed by the microcomputer 4 in the receiving device 1 will be described with reference to the drawings. FIG. 2 is a flowchart showing the operation performed by the microcomputer 4 in the search sensitivity adjustment step performed in the manufacturing process of the receiver 1 according to the embodiment (1).

When the power of the receiving apparatus 1 is turned on, the microcomputer 4 first determines in step S1 whether or not the operation mode is a correction value input mode by, for example, pressing multiple switches of the operation unit 6. If it is determined in step S1 that the mode is not the correction value input mode, the process ends without executing the correction process. On the other hand, if it is determined in step S1 that the mode is the correction value input mode, the process proceeds to step S2, and the process proceeds to step S2. The display unit 7 instructs the operator of the car 7 to use the signal generator 2 to apply a reference test radio wave of a predetermined strong electric field level to the tuner module 3. Next, in step S3, it is determined whether or not a reference test radio wave of a predetermined strong electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a by the operator, and it is determined that the reference test radio wave is applied. Then, the process proceeds to step S4, where the tuner module 3 acquires the voltage value of the electric field intensity actually output as the S level and displays the voltage value on the display unit 7.

Next, at step S5, the display unit 7 is displayed to the operator.
Is displayed on the display unit 7 instructing the operator to input a search sensitivity correction value. For example, if a reference test radio wave at the predetermined strong electric field level is applied, the display unit 7
Is expected reference S level voltage value, for example, 2.7 V, and the reference S level actually displayed on the display unit 7.
When the level voltage value is, for example, 2.3 V, the operator uses the up / down button and the rotation button of the operation unit 6 as a correction value of 0.4 V of 2.7 V-2.3 V = 0.4 V. (Neither is shown), and input to the microcomputer 4. Next, in step S6, it is determined whether or not a search sensitivity correction value has been input by the operator. If it is determined that a correction value has been input, the process proceeds to step S7, where the input correction value is input. It is stored in the EEPROM 5.

Next, proceeding to step S8, the display unit 7 is instructed by the operator to apply a reference test radio wave of a predetermined weak electric field level to the tuner module 3 using the signal generator 2. Next, in step S9, it is determined whether or not a reference test radio wave of a predetermined weak electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a by the operator, and it is determined that the reference test radio wave has been applied. Then, the process proceeds to step S10, in which the voltage value of the electric field strength which is actually output as the S level by the tuner module 3 is fetched and displayed on the display unit 7.

Next, in step S11, the display unit 7 is instructed to input a search sensitivity correction value based on the display on the display unit 7. For example, when the reference test radio wave of the predetermined weak electric field level is applied, the expected reference S level voltage value that will be displayed on the display unit 7 is, for example, 1.2 V, and is actually displayed on the display unit 7. If the S-level voltage value is, for example, 0.9 V, the operator inputs 0.3 V of 1.2 V-0.9 V = 0.3 V as a correction value to the microcomputer 4 from the operation unit 6. Becomes
Next, in step S12, it is determined whether or not a search sensitivity correction value has been input by the operator. If it is determined that a correction value has been input, the process proceeds to step S13, where the input correction value is entered. Is stored in the EEPROM 5 and the input setting process of the search sensitivity correction value before product shipment is completed.

FIG. 3 is a flow chart showing the operation of the microcomputer when the receiving apparatus 1 in which the input setting of the search sensitivity correction value has been made is shipped and the search processing is actually performed under the user. This will be described with reference to FIG. The microcomputer 4 first accesses the EEPROM 5 in step S31 to
The correction value stored in the correction value input setting step before the product shipment described above is called from the OM 5 and stored in the RAM in the microcomputer 4. Next, the process proceeds to step S32, where it is determined whether or not a search operation has been performed by the listener via the operation unit 6. If it is determined that the search operation has not been performed, the process is performed without performing the search process. To end.

On the other hand, if it is determined in step S32 that the search operation has been performed, the process proceeds to step S33, where the S level sent from the tuner module 3 is detected. Is added to the detected S level (step S34), and the expected reference S level voltage as the search sensitivity reference value of the strong electric field level originally stored in the ROM of the microcomputer 4 is obtained. The value is compared with 2.7V (step S35). If it is determined that the S level sent from the tuner module 3 is higher than the expected reference S level voltage value of 2.7 V of the strong electric field level, the search process is stopped there, and the broadcast station of the detected S level frequency is stopped. After performing the process of outputting the audio signal, the search process is terminated.

On the other hand, if it is determined in step S35 that the S level sent from the tuner module 3 is not more than the expected reference S level voltage value 2.7V as the search sensitivity reference value of the strong electric field level, then Step S37
Then, it is determined whether or not the search over the entire frequency range has been performed. If it is determined that the search over the entire frequency range has not been performed, the process returns to step S33, and the tuner module for the broadcasting station of another frequency is determined. 3, the above steps are repeated.

On the other hand, if it is determined in step S37 that the search over the entire frequency range has been performed, the process proceeds to step S38, in which 0.3 V as the correction value of the weak electric field level is detected. Is corrected (step S38), and compared with the expected reference S level voltage value 1.2V as the search sensitivity reference value of the weak electric field level originally stored in the ROM of the microcomputer 4 (step S39). ). When it is determined that the S level sent from the tuner module 3 is higher than the expected reference S level voltage value of the weak electric field level of 1.2 V, the search process is stopped there, and the broadcast station of the detected S level frequency is stopped. After performing the process of outputting the audio signal (step S40), the search process is terminated.

On the other hand, if it is determined in step S39 that the S level sent from the tuner module 3 is less than the expected reference S level voltage value 1.2V as the search sensitivity reference value of the weak electric field level, then Step S41
Then, it is determined whether or not the search over the entire frequency range has been performed. If it is determined that the search over the entire frequency range has not been performed, the process returns to step S38, and the tuner module for the broadcast station of another frequency is determined. 3, the above steps are repeated. Also,
If it is determined in step S41 that the search over the entire frequency range has been performed, the search process is terminated there.

According to the receiving apparatus 1 of the above embodiment (1), in the search sensitivity adjustment step before the product is shipped,
When the operator applies a radio wave of the reference electric field strength serving as a reference of the search sensitivity to the tuner module 3, the reference S level is displayed on the display unit 7. The worker is expected to output from the tuner module 3 by application of the reference radio wave, and usually recognizes the expected reference S level stored in advance in the ROM of the microcomputer 4. The correction value can be easily calculated by comparing with the reference S level. The operator operates the operation unit 6 to store the correction value in the EEPROM 5, thereby completing the operation. Thereafter, in the search process after the product is shipped, the correction value stored in the EEPROM 5 is called, and the S level output from the tuner module 3 is automatically set to S based on the called correction value. In steps S34 and S38 as the level correcting means, correction is made so as to conform to the expected reference S level, and a search process is performed based on the corrected S level.

Therefore, according to the receiving apparatus 1 of the embodiment (1), it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity, which is conventionally provided for each tuner module. 3 can be reduced by the mounting space for the variable resistor and the like. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Further, with the miniaturization of the tuner module 3, the miniaturization of the receiving device 1 can be achieved. Furthermore, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuner module 3 in advance so that the resistance value of the variable resistor can be adjusted from the outside,
Furthermore, in the final stage of commercialization by incorporating the tuner module 3 and the like into the housing, it is not necessary to adjust the search sensitivity of the tuner module 3 for each product, and an opening for inserting an adjustment jig from outside the housing is eliminated. It is unnecessary to provide the housing in advance. Therefore, it is possible to eliminate the restriction on the design of the tuner module 3 and the housing, and to improve the physical and electrical shielding effect in the receiving device 1 by eliminating the need to provide the opening. Can be.

Further, according to the receiving apparatus 1 according to the embodiment (1), since the EEPROM 5 is nonvolatile, the power of the receiving apparatus 1 is turned off and then turned on again. It is possible to eliminate the necessity of re-inputting the correction value of the search sensitivity and the reference S level. Therefore, the correction value and the reference S level can be surely reflected in the search processing regardless of whether the power of the reception apparatus 1 is turned on or off. Therefore, the reception apparatus 1 that always performs the search processing with the optimum search sensitivity can be used. Can be provided to the user. Further, receiving apparatus 1 according to Embodiment (1) above.
Since the reference electric field intensity, which is the reference of the search sensitivity, is based on a binary value, a broadcast station that cannot be detected using the strong electric field standard may be detected using the weak electric field standard.
Thus, the range of selection of a broadcasting station that can be detected by the switch processing can be expanded.

Next, the receiving apparatus 1 according to the embodiment (2)
The operation performed by the microcomputer in the search sensitivity adjustment process performed in the first manufacturing process is shown in FIG.
Explanation will be made based on the When the power of the receiving device 11 is turned on, the microcomputer 14 first determines in step S21 whether or not the operation mode is a correction value input mode by, for example, multiple pressing of a switch of the operation unit 6. Step S
If it is determined at 21 that the mode is not the correction value input mode, the process is terminated without executing the correction process.
If it is determined in step S21 that the mode is the correction value input mode, then the process proceeds to step S22, where the operator is notified of the tuner module 3 by using the signal generator 2.
Is displayed on the display unit 7 to instruct the display unit 7 to apply a reference test radio wave having a predetermined strong electric field level.

Next, in step S23, it is determined whether or not a reference test radio wave having a predetermined strong electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a by the operator, and the reference test radio wave is applied. If it is determined that the tuner module 3 has received the electric field intensity voltage value actually output as the S level by the tuner module 3 and the reference test radio wave of the predetermined strong electric field level is applied, the tuner module 3 Is compared with the expected reference S-level voltage value that will be output from the controller, and a correction value is calculated based on the comparison.

For example, if the reference test radio wave of the predetermined strong electric field level is applied, the expected reference S level voltage value output from the tuner module 3 is, for example, 2.7 V, and the actual predetermined strong electric field level When the reference S level voltage value output from the tuner module 3 is, for example, 2.3 V by applying the reference test radio wave of (2), 2.7 V−2.3 V = 0.4 V of 0.4 V = 0.4 V Is calculated as the correction value. Next, in step S25, the calculated correction value is stored in the EEPROM 5.

Next, the process proceeds to step S26, at which the display unit 7 displays an instruction to instruct the operator to apply a reference test radio wave of a predetermined weak electric field level to the tuner module 3 using the signal generator 2. Next, step S27
Then, the operator determines whether or not a reference test radio wave of a predetermined weak electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a. Proceeding to step S28, the tuner module 3
When the voltage value of the electric field strength to be output as the level is taken in, and the reference test radio wave of the predetermined weak electric field level is applied, a comparison is made with an expected reference S level voltage value that will be output from the tuner module 3. A correction value is calculated based on this comparison.

For example, if the reference test radio wave of the predetermined weak electric field level is applied, the expected reference S level voltage value output from the tuner module 3 is, for example, 1.2 V, and When the reference S level voltage value output from the tuner module 3 is 0.9 V, for example, by applying the reference test radio wave of Is calculated as the correction value. Next, the process proceeds to step S29, in which the calculated correction value is stored in the EEPROM 5, and the process of inputting the search sensitivity correction value before the product is shipped ends.

As shown in FIG. 4, the receiver 1 according to the embodiment (2) in which the search sensitivity correction value is input and set.
Also in the case of 1, since the correction value is stored in the EEPROM 5, the operation of the microcomputer 14 when performing the search process may be the same as the operation based on the flowchart shown in FIG.

Receiving apparatus 11 according to the above embodiment (2)
According to the method, in the search sensitivity adjustment process before product shipment,
If an operator applies a radio wave of a reference electric field strength serving as a reference for the search sensitivity to the tuner module 3, it is expected that the tuner module 3 will output the radio wave by the application of the reference radio wave. A previously stored expected reference S level is called up and said reference S
The level is compared with the expected reference S level, and the correction value is automatically calculated. Therefore, the operator can terminate the search sensitivity adjustment work only by applying the radio wave of the reference electric field strength serving as the search sensitivity reference to the tuner module 3.

Thereafter, at the time of the search process after the product is shipped, the correction value stored in the EEPROM 5 is called, and the S level output from the tuner module 3 is automatically set based on the called correction value. In steps S34 and S38 as the S level correcting means, correction is made so as to conform to the expected reference S level, and a search process is performed based on the corrected S level.

Therefore, according to the receiving apparatus 11 according to the above-described embodiment (2), the worker can perform a simpler operation than the receiving apparatus 1 according to the above-described embodiment (1). The adjustment work of the touch sensitivity can be completed.
Further, it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity, which is conventionally provided for each tuner module, and the board area of the tuner module 3 can be reduced by the mounting space of the variable resistor or the like. it can. For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced. Also, with the miniaturization of the tuner module 3, the receiving device 1
1 can be reduced in size. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuner module 3 so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage of commercializing the module 3 and the like into a housing, the tuner module 3
It is no longer necessary to adjust the search sensitivity, and it is not necessary to provide an opening in the housing in advance for inserting an adjustment jig from outside the housing. Therefore, it is possible to eliminate restrictions on the design of the tuner module 3 and the housing, and to improve the physical and electrical shielding effects in the receiving device 11 by eliminating the need to provide the opening. Can be.

Next, receiving apparatus 2 according to Embodiment (3)
The operation performed by the microcomputer in the search sensitivity adjustment process performed in the first manufacturing process is shown in FIG.
Explanation will be made based on the When the power of the receiving device 21 is turned on, the microcomputer 24 first determines in step S51 whether or not the operation mode is a correction value input mode by, for example, multiple pressing of a switch of the operation unit 6. Step S
If it is determined in 51 that the mode is not the correction value input mode, the process is terminated without executing the correction process.
If it is determined in step S51 that the mode is the correction value input mode, the process proceeds to step S52, where the operator is notified of the tuner module 3 by using the signal generator 2.
Is displayed on the display unit 7 to instruct the display unit 7 to apply a reference test radio wave of a predetermined electric field level.

Next, at step S53, it is determined whether or not a reference test radio wave of a predetermined electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a by the operator, and the reference test radio wave is applied. If it is determined that the voltage has been reached, the process proceeds to step S54 to fetch the voltage value of the electric field strength (for example, 2.3 V) actually output as the S level by the tuner module 3, and perform the search at the time of the search process after the product is shipped. The reference S level voltage value 2.3V as the sensitivity reference value is stored in the EEPROM 5, and the input setting process of the search sensitivity reference value before product shipment is completed.

Next, the operation performed by the microcomputer 24 when the receiving apparatus 21 in which the input setting of the search sensitivity reference value has been performed in the above-described steps performs the search processing will be described with reference to the flowchart shown in FIG. The microcomputer 24 first accesses the EEPROM 5 in step S61 to
The search sensitivity reference value (2.3 V) stored in the search sensitivity reference value input setting step before the product shipment described above is called from the OM 5 and the RAM in the microcomputer 24 is called.
To memorize.

Next, in step S62, it is determined whether or not a search operation has been performed by the listener via the operation unit 6. If it is determined that the search operation has not been performed, a search process is performed. The process ends without any processing. On the other hand, step S
If it is determined in step 62 that the search operation has been performed by the listener via the operation unit 6, the process proceeds to step S63, where the S level sent from the tuner module 3 is detected, and thereafter, the process proceeds to step S64. Then, the search sensitivity reference value (2.3 V) is compared with the S level sent from the tuner module 3 (step S64). If it is determined that the S level sent from the tuner module 3 is higher than the search sensitivity reference value of 2.3 V, the search process is stopped there and the detected S level is detected.
After performing the process of outputting the audio signal of the broadcasting station having the frequency of the level (step S65), the search process ends.

On the other hand, if it is determined in step S64 that the S level sent from the tuner module 3 is equal to or less than 2.3 V as the search sensitivity reference value, the process proceeds to step S66, where the control over the entire frequency range is performed. It is determined whether or not the search has been performed. If it is determined that the search over the entire frequency range has not been performed, the process returns to step S63, and the process from the tuner module 3 for the broadcast station of another frequency is performed.
The level is detected, and the above steps are repeated. On the other hand, if it is determined in step S66 that the search over the entire frequency range has been performed, the search process is terminated there.

Receiving apparatus 21 according to Embodiment (3)
According to the method, in the search sensitivity adjustment process before product shipment,
When an operator applies a radio wave of a reference electric field strength serving as a reference for the search sensitivity to the tuner module 3, the reference S level actually output from the tuner module 3 by the application of the reference radio wave is automatically stored in the EEPROM 5. It is memorized. After that, in the search process after product shipment, EE
The reference S level stored in the PROM 5 is called, the called reference S level is compared with the S level output from the tuner module 3, and a search process is performed. Therefore, the operator can terminate the search sensitivity adjustment work only by applying the radio wave of the reference electric field strength serving as the search sensitivity reference to the tuner module 3.

Therefore, according to the receiving apparatus 21 according to the above-described embodiment (3), the work can be performed more easily than in the case of the receiving apparatus 1 according to the above-described embodiment (1), and the operator can perform the service. The adjustment work of the touch sensitivity can be completed, and it is not necessary to provide a variable resistor or the like for adjusting the search sensitivity conventionally provided for each tuner module. The size can be reduced by the mounting space for the resistors and the like.
For this reason, the trouble of mounting the variable resistor and the like can be omitted, and the manufacturing cost can be reduced.

Further, with the miniaturization of the tuner module 3, the size of the receiving device can be reduced. Further, it is not necessary to provide an opening for inserting an adjustment jig such as a driver in the tuner module 3 so that the resistance value of the variable resistor can be adjusted from the outside. In the final stage of commercializing the module 3 or the like by incorporating it into the housing, it is not necessary to adjust the search sensitivity of the tuner module 3 for each product, and an opening for inserting an adjustment jig from outside the housing is provided in the housing. May be unnecessary in advance. Therefore, it is possible to eliminate restrictions on the design of the tuner module 3 and the housing, and to improve the physical and electrical shielding effects in the receiving device 21 by eliminating the need to provide the opening. Can be.

FIG. 7 shows the operation performed by the microcomputer in the defective item checking step based on the search sensitivity detection performed in the inspection stage before the product is shipped out of the receiving apparatus according to the embodiment (4). The description will be made based on the flowchart. When the power of the receiving device 31 is turned on, first, the microcomputer 34, for example, in step S 71,
It is determined whether or not the tuner module 3 is in the malfunction determination mode due to multiple pressing of the switch. If it is determined in step S71 that the mode is not the malfunction determination mode, the process ends without executing the malfunction determination process.

On the other hand, if it is determined in step S71 that the mode is the malfunction determination mode, then in step S72
To display on the display unit 7 an instruction to instruct the tuner module 3 to apply the reference test radio wave of a predetermined electric field level to the tuner module 3 using the signal generator 2. Next, in step S73, a reference test radio wave of a predetermined electric field level is applied to the tuner module 3 from the signal generator 2 via the antenna jack 3a by the operator, and the tuner module 3
It is determined whether or not the S level output from is captured. In step S73, a reference test radio wave is applied,
If it is determined that the S level has actually been acquired, the process proceeds to step S74, and the malfunction reference S level voltage value (for example, 2.x) stored in the ROM in advance for malfunction determination.
0V).

Next, in step S75, the voltage value (for example, 2.3 V) of the electric field intensity actually output as the S level by the tuner module 3 and the malfunction reference S level voltage stored in advance for malfunction determination. The value is compared with the value to determine whether or not the tuner module 3 is malfunctioning. In step S75, the tuner module 3
If it is determined that the tuner module 3 is malfunctioning, the process proceeds to step S76 to perform a process of displaying that the tuner module 3 is malfunctioning on the display unit 7, and the process ends, and in step S75, the tuner module 3 malfunctions. If not, the process is terminated without displaying that the tuner module 3 is malfunctioning on the display unit 7.

Receiving apparatus 31 according to the above embodiment (4)
According to the above, in the inspection stage before product shipment, the malfunction reference S level voltage value stored in advance for malfunction determination and the S level output from the tuner module 3 upon application of the reference test radio wave are compared. By making the comparison, the operator of the production line can easily determine the circuit failure of the tuner module 3 based on the result of the failure determination displayed on the display unit 7, and quickly recover the defective product for repair. It can be turned.

Further, the above-mentioned embodiments (1) to (3)
Receiving apparatus according to Embodiment 4 and receiving apparatus 31 according to Embodiment (4)
Can also be implemented in combination, in which case,
Before the search sensitivity adjustment step before product shipment in the receiving apparatus according to the above-described embodiments (1) to (3), the above-described malfunction determination step in the receiving apparatus 31 according to the embodiment (4) should be performed. I just need. In this case, in addition to the effects of any of the receiving apparatuses according to the above-described embodiments (1) to (3), it is possible to easily determine a circuit malfunction of the tuner module 3 in an inspection stage before product shipment. Can quickly collect defective products for repair.
The repair can be quickly performed without performing a wasteful adjustment process thereafter.

FIG. 8 is a flow chart showing the operation performed by the microcomputer in the malfunction determining step performed at the stage of using the receiving apparatus according to the embodiment (5) after the product is shipped.
Explanation will be made based on the When the power of the receiving device 41 is turned on, the microcomputer 44 first gives an instruction to an electric field applying means (not shown) connected to the antenna jack 3a of the tuner module 3 and provided for malfunction determination in step S81. Then, an electric field corresponding to the radio wave of the reference electric field strength is applied to the tuner module 3. Next, the process proceeds to step S82, where the malfunction reference S level voltage value (for example, 2.0
Call V). Next, in step S83, the tuner module 3 actually stores the voltage value (for example, 2.3 V) of the electric field intensity output as the S level upon application of the electric field corresponding to the radio wave of the reference electric field intensity for malfunction determination in advance. It is determined whether the tuner module 3 is malfunctioning by comparing the malfunction reference S level voltage value.

If it is determined in step S83 that the tuner module 3 is malfunctioning, step S84
If the process proceeds to step S83 to display that the tuner module 3 is malfunctioning on the display unit 7 and that repair is necessary, the process ends, and on the other hand, it is determined in step S83 that the tuner module 3 is not malfunctioning. , The process is terminated without displaying on the display unit 7 that the tuner module 3 is malfunctioning.

Receiver 41 According to Embodiment (5)
According to the above, in the use stage of the receiver 41 after the product is shipped, the malfunction reference S level voltage value stored in advance for malfunction determination and the output from the tuner module 3 upon application of the reference test radio wave. The malfunction is determined by comparing the S level with the S level, and the result is displayed on the display unit 7, so that the consumer can easily know the circuit malfunction of the tuner module 3 and quickly determine whether or not the product is defective. Judgment can be sent to repair.

Further, the above-mentioned embodiments (1) to (4)
Receiving device according to the present invention and receiving device 41 according to the embodiment (5).
Can also be implemented in combination, in which case,
Prior to the search sensitivity adjustment step after product shipment in the receiving apparatuses according to the above-described embodiments (1) to (4), the above-described malfunction determination step in the receiving apparatus 41 according to the embodiment (5) is performed. What is necessary is just to do as a structure. In this case, in addition to the effects of any of the receiving devices according to the above-described embodiments (1) to (4), in the use stage of the receiving device after shipping the product, the consumer can display the tuner from the display on the display unit 7. The circuit malfunction of the module 3 can be easily known, and it can be quickly determined whether or not the product is a faulty product and the product can be sent for repair.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a schematic configuration of a receiving device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation performed by a microcomputer in a search sensitivity adjustment process performed in a manufacturing process of the receiving device.

FIG. 3 is a flowchart showing the operation of the microcomputer when the receiving apparatus according to the embodiment in which the search sensitivity correction value is set to perform a search process;

FIG. 4 is a flowchart showing an operation of a microcomputer in a search sensitivity adjustment step performed in a manufacturing process of a receiver according to another embodiment.

FIG. 5 is a flowchart illustrating an operation of a microcomputer in a search sensitivity adjustment step performed in a manufacturing process of a receiver according to still another embodiment.

FIG. 6 is a flowchart showing an operation of a microcomputer when a receiving apparatus according to still another embodiment in which a search sensitivity correction value input setting is performed performs a search process.

FIG. 7 is a flowchart showing an operation of a microcomputer in a defective product check step based on detection of search sensitivity performed in a stage of inspection before shipping of a receiving device according to still another embodiment.

FIG. 8 is a flowchart showing an operation of a microcomputer in a defective product checking step performed in a use stage after product shipment of a receiving device according to still another embodiment.

[Explanation of symbols]

 1, 11, 21, 31, 41 Receiving device 2 Signal generator (SG) 3 Tuner module (T / M) 4, 14, 24, 34, 44 Microcomputer 5 EEPROM 6 Operation unit 7 Display unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5J103 AA09 DA22 GA11 MA02 NA01 5K061 AA08 CC21 DD05 FF17 JJ07 5K062 AA01 AB03 AB12 AC07 AG01 BA06 BE05 BE12

Claims (15)

[Claims] 1. A tuning means for performing a tuning process on a received radio wave, a control means for taking in an S level output from the tuning means to control the tuning means, and an operating means for sending an operation signal to the control means ,
And a receiver having display means connected to the control means, wherein a reference S level output from the tuning means is detected by the application of radio waves having a reference electric field strength serving as a search sensitivity reference, and the reference S is detected. Capturing means for capturing a level; display means for displaying the reference S level; storage means for storing an input correction value calculated based on the displayed reference S level; S level correction means for calling the correction value stored in the storage means and correcting the S level output from the tuning means based on the called correction value; and searching based on the corrected S level. A receiving apparatus comprising: a search processing means for performing processing. 2. A tuning means for performing tuning processing on a received radio wave, a control means for taking in the S level output from the tuning means to control the tuning means, and an operating means for sending an operation signal to the control means. ,
And a receiver provided with display means connected to the control means, wherein a reference S level output from the tuning means is detected by application of a radio wave having a reference electric field strength serving as a search sensitivity reference, and the reference S is detected. A capturing means for capturing a level; comparing the captured reference S level with an expected reference S level which is expected to be output when a radio wave of the reference electric field strength is applied, and which is stored in advance; Correction value calculation means for calculating a value; storage means for storing the calculated correction value; and in a search process, the correction value stored in the storage means is called, and based on the called correction value. S level correcting means for correcting the S level output from the tuning means, and search processing means for performing a search process based on the corrected S level. Receiving apparatus according to claim and. 3. Tuning means for performing tuning processing on a received radio wave, control means for taking in the S level output from the tuning means to control the tuning means, and operating means for sending an operation signal to the control means ,
And a receiver having display means connected to the control means, wherein a reference S level output from the tuning means is detected by the application of radio waves having a reference electric field strength serving as a search sensitivity reference, and the reference S is detected. Capturing means for capturing a level; storage means for storing the captured reference S level; and reference S stored in the storage means during search processing.
A receiving device comprising: a search processing means for calling a level and performing a search process based on the called reference S level. 4. The receiving apparatus according to claim 1, wherein said storage unit is a nonvolatile storage unit. 5. The receiving apparatus according to claim 1, wherein a reference electric field intensity serving as a reference for search sensitivity is a binary reference. 6. A reference radio wave applying step of applying a radio wave of a reference electric field intensity serving as a reference of a search sensitivity, and a correction value is calculated based on a reference S level output from a tuning means by applying the reference radio wave. A correction value calculating step; a correction value storing step of storing the calculated correction value in a storage means; and in a search process, the correction value stored in the storage means is called, and based on the called correction value. An S level correction step of correcting the S level output from the tuning means, and a search processing step of performing a search process based on the corrected S level. -Method of adjusting the sensitivity. 7. A reference radio wave applying step of applying a radio wave of a reference electric field intensity serving as a reference of a search sensitivity, a reference S level output from tuning means by applying the reference radio wave, and applying a reference radio wave. A correction value calculating step of calculating a correction value by comparing with an expected reference S level that is expected to be output from the tuning means and stored in advance; and storing the calculated correction value in the storage means. A correction value storage step, and an S level correction step of calling up the correction value stored in the storage means during the search process, and correcting the S level output from the tuning means based on the called up correction value. And a search processing step of performing a search process based on the corrected S level. 8. A reference radio wave applying step of applying a radio wave of a reference electric field intensity serving as a reference of a search sensitivity, and a reference S for storing a reference S level output from a tuning means by application of the reference radio wave in a storage means. A level storage step, and the reference S stored in the storage means during the search process.
A search processing step of calling a level and performing a search process based on the called reference S level. 9. The search sensitivity adjusting method according to claim 6, wherein the reference electric field intensity serving as the search sensitivity reference is a binary reference. 10. A tuning means for performing a tuning process on a received radio wave, a control means for taking in an S level output from the tuning means to control the tuning means, and an operating means for sending an operation signal to the control means. ,
And a receiver having display means connected to the control means, wherein a reference S level output from the tuning means is detected by the application of radio waves having a reference electric field strength serving as a search sensitivity reference, and the reference S is detected. A receiving apparatus comprising: a capturing unit for capturing a level; and a malfunction determining unit for determining a circuit malfunction of the tuning unit based on the reference S level output from the tuning unit. 11. A fetching means for detecting a reference S level output from said tuning means by applying a radio wave of a reference electric field intensity serving as a reference for search sensitivity and taking in said reference S level, and outputting from said tuning means. 6. A malfunction judging means for judging a circuit malfunction of the tuning means based on the reference S level to be performed.
The receiving device according to any one of the above items. 12. The receiving apparatus according to claim 10, further comprising a display output unit for displaying a result of the judgment by said malfunction judging unit on said display unit. 13. A tuning means for performing a tuning process on a received radio wave, a control means for taking in an S level output from the tuning means to control the tuning means, and an operating means for sending an operation signal to the control means. ,
And a receiving device provided with a display unit connected to the control unit, wherein, when power is turned on, an electric field application unit that applies an electric field corresponding to a radio wave of a reference electric field strength to the tuning unit, And a malfunction judging means for judging a circuit malfunction of the tuning means based on the reference S level. 14. An electric field applying means for applying an electric field corresponding to a radio wave of a reference electric field strength to said tuning means when a power is turned on, and said tuning means based on said reference S level output from said tuning means. And a malfunction judging means for judging a circuit malfunction.
5. The receiving device according to any one of items 10 to 12. 15. The receiving apparatus according to claim 13, further comprising a display output unit for displaying a result of the judgment made by said malfunction judging unit on said display unit.