Claims:We claim:
1. A Smartwatch locking system includes the locking device (102), which comprises the components of:
a) PPG Signal recorder (301);
b) Biometric intelligent device (302); and
c) Controller (303).
2. The Smartwatch locking system as claimed in claim 1, wherein said PPG signal recorder (301) is embedded within the smartwatch for its protection, which comprises the steps of:
sensing the user’s wrist-pulse by means of the sensor (402) and then it forwards the sensed pulse to the signal detection unit (403);
detecting the sensed pulse based on the signal condition with high and low order derivatives using the signal detection unit (403);
processing the detected signal by converting the pulse signal of the user from analog to digital conversion, then this processed signal start filtering and amplifying by means of the processing unit (404); and
storing the processed data in the template database (405) for accessing the device and securing it from unauthorized person.
3. The Smartwatch locking system as claimed in claim 1, wherein said Biometric intelligent device (302) comprising the two phases:
storing the PPG signal of the user or authorized person in the template storage system (501); and
identifying the input data of the user with the stored data by means of identification (502).
4. The Smartwatch locking system as claimed in claim 1, wherein said Controller (303) manages or directs the flow of data communications in the device.
5. The Smartwatch locking system as claimed in claim 1, wherein said Biometric intelligent device (302) process comprising the steps of:
pre-processing the sensed PPG signal (301), in which it depends not only on physiological characteristics but also on the external states like power line interferences in the pre-processing unit (601);
extracting the predefined number of processed PPG pulse signals by feature extraction (602) to generate a template (603); and
matching the input PPG pulse signal of the user with the stored data in the template database (604) using a matcher (605) to verify whether the PPG signal is matched (606) or not (607). , Description:TITLE OF THE INVENTION: PPG SIGNAL-BASED BIOMETRIC RECOGNITION FOR SMARTWATCH LOCKING SYSTEM
FIELD OF THE INVENTION
[0001] The present invention generally relates to the field of biometric recognition. More particularly, the invention relates to the systems for locking the smartwatch based on the user’s own PPG (photoplethysmograph) signal for identification.
BACKGROUND OF THE INVENTION
[0002] In a modern security system, biometric data of the user are utilized for securing the entire device. Due to this, users are not required to memorize any password or pin for protecting their devices, and these biometric data are very essential to lock the device from an unauthorized person for data accessing.
[0003] Generally, based on the characteristics of a person, biometric recognition automatically identifies and confirms the individuality of an authenticated person to unlock the entire device. Commonly, the biometric recognition is done based on the user’s face, fingerprint, iris scan, and voice. But sometimes, these biometric data have trouble with the size and quality of images. So, the PPG pulse signal of the user is used here to recognize the authenticated person for securing the smartwatch.
[0004] The photoplethysmograph (PPG) is a biomedical signal which can be utilized for estimating the volumetric flow of blood changes in the peripheral circulation. This is considered as a simple technique, which can also measure the rate of the heart.
Prior Arts:
[0005] Indian patent application 958/KOLNP/2003 describes the system of biometric identification or authentication, which relates to the large-scale systems, in which several records of fingerprint or other biometric data are stored in databases. These systems process the requests of matching accompanied by coded data signifies a fingerprint, and determine among the various records of stored fingerprint, the one or those which present the closest match. Thus, this system must be able to process the update requests for inserting or removing the fingerprint which is stored in the databases.
[0006] Indian patent application 822/MUM/2004 describes the method of identifying an individual using their biometrics such as palm print, iris, and fingerprint. Here, it identifies the anchor features as well as other identifiable significant features. The relativity of significant features in relation to other features is computed and combined to attain a classification code. Thus, the attained classification code and biometric data get encrypted and stores for later verification.
[0007] Indian patent application 4061/DELNP/2004 describes the systems and method for securing the biometric authentication, which comprises a client security system configured to create a request for accessing an application module that is configured to receive a request and respond through sending an instruction to the authentication module to begin an authentication session. The client security system is further arranged to create an authorization packet that is returned to the authentication module after being encrypted utilizing information held in the session packet.
[0008] State of the art suffers from the following limitations:
[0009] State of the art does not consider the designed smartwatch architecture with a locking device, and intelligent biometric device for protecting the smartwatch with the user’s own PPG pulse signal. The intelligent biometric device processes the user’s PPG signal based on two phases such as template storage system and identification system, in which the system of template storage stores the PPG signal of the user, and identifies the user’s input data by comparing it with the stored data through identification system for unlocking the smartwatch.
OBJECTIVES OF THE INVENTION
[0010] The primary objective of the present invention is to provide a system with the locking device which is embedded within the smartwatch for accessing the device.
[0011] Yet another objective of the present invention is to provide a system with a locking device, which comprises the PPG signal recorder, intelligent biometric device, and controller.
[0012] Further objective of the present invention is to sense the own PPG pulse signal of the user for data accessing and data protection.
[0013] Further objective of the present invention is to provide a system with an intelligent biometric device, which comprises two phases, such as template storage system and identification.
[0014] Further objective of the present invention is to provide a system with the controller, which controls the entire device during the flow of data in a smartwatch.
SUMMARY OF THE INVENTION
[0015] Before describing the present smartwatch locking system, it is to be understood that this described present invention is not limited to the particular systems and methodologies.
[0016] A main aspect of the present invention is to secure the smartwatch with a locking device and biometric intelligent device.
[0017] Accordingly, in one aspect of the present invention relates to a system for locking smartwatch. The main propose of our invention is to secure the data in a smartwatch from an unauthorized person.
[0018] Another aspect of this present invention is to lock the entire system by means of a locking device which comprises PPG signal recorder of the user, intelligent biometric device, and controller. Intelligent biometric device processes the PPG signal of the user, which is captured with a suitable sensor to sense the PPG signal that is processed to extract the signal representation after pre-processing (601) and finally stores the data in the template database.
[0019] Finally, when the user turns on the smartwatch, it automatically verifies the pulse signal of the user with the stored data in the template database. If the signal is matched once, then it releases the lock for the user to access the device. Otherwise, it does not release the lock for the user, and thus the stored data in smartwatch is kept secure.
BRIEF DESCRIPTION OF DRAWINGS
[0020] The accompanying drawings, which are incorporated in, constitute a part of the specification, illustrate an embodiment of the invention, and together with the description serve to explain the principles of the invention.
[0021] Figure 1 illustrates the perspective view of the smartwatch locking system device as provided in the present invention.
[0022] Figure 2 illustrates the architecture of the smartwatch locking system as provided in the present invention.
[0023] Figure 3 illustrates the components of the locking device as provided in the present invention.
[0024] Figure 4 illustrates the block diagram of recording the PPG signal as provided in the present invention.
[0025] Figure 5 illustrates the phases of the intelligent biometric device as provided in the present invention.
[0026] Figure 6 illustrates the process of the intelligent biometric device as provided in the present invention.
DETAILED DESCRIPTION OF THE INVENTION
[0027] Some embodiments of this invention, illustrating its features, will now be discussed, and the scope of the invention is not restricted to the listed embodiments and is limited only by the appended claims.
[0028] In one embodiment of the present invention, figure 1 shows the perspective view of the smartwatch (100), which comprises the locking device (102) that is embedded within the watch (101) for locking or unlocking the entire device based on the PPG pulse signal of the user.
[0029] The present invention shows the architecture of Smartwatch Locking system (200), with an intelligent biometric device (302), further detailed descriptions of the present invention are stated here, a reference to the attached drawings. Thus, the detailed embodiments of the present invention are disclosed here to describe the present invention.
[0030] Figure 2 shows the architecture of smartwatch locking system (200), The present invention comprises the locking device (102) which is mainly used for data access and data protection with their own PPG pulse signal, such that any unauthorized person cannot access the device. When the smartwatch (101) is turned on by the user who is tying in their hand, then immediately locking device (102) verifies the PPG signal of the user with the stored database and releases the lock for data accessing (201). If the stored database is not matched with the corresponding PPG signal, then the locking system does not release the lock (202); thus, the user cannot access the device, and data in the smartwatch locking system is kept secure from an unauthorized person.
[0031] In another embodiment of the present invention, as shown in figure 3, the components of the Locking device (102) in the smartwatch comprise a PPG signal recorder (301), intelligent biometric device (302), and controller (303). A PPG pulse signal recorder (301) is to detect the blood volume through the sensor and deliberated with a custom-made setup. An intelligent biometric device (302) in the locking system includes a template storage system (501) and identification (502). Here, the input PPG signal recorder (301) is compared with the stored database for accessing the data from the device, and finally, the controller (303) in this locking system manages or directs the flow of data communications.
[0032] In another embodiment of the present invention, figure 4 shows the block diagram of recording the PPG signal (400). Initially, the user’s wrist-pulse (401) is monitored by the sensors (402) and passes to the signal detection unit (403), in which the sensed pulse is detected based on the signal condition with high order and low order derivatives. Signal processing (404) in this device uses the analog to digital converter for signal conversion, and then it gets filtered and amplified by the processing unit. Finally, every data and PPG signal is stored in the template database (405) for accessing the device. So, due to this PPG signal, an unauthorized person cannot access the device without getting permission from an authorized person.
[0033] In another embodiment of the present invention, figure 5 shows the two phases of the intelligent biometric device (500). This intelligent biometric device (302) processes the PPG signal based on two phases such as template storage system (501) and identification (502), in which the system of template storage (501) stores the PPG signal of the user (authentication person) and identifies the input data with the stored data by means of identification (502).
[0034] In another embodiment of the present invention, the process of the intelligent biometric device (600) is shown in figure 6. The PPG pulse signal (301) of the user is captured with a suitable sensor to sense the PPG signal, which is processed to extract the signal representation, referred as a template which is stored in the database (604) after the process of pre-processing (601). This template protection is one of the main challenges in the processes of intelligent biometric devices.
[0035] Matcher (605) in this device computes the resemblance of both the input template and template stored in the database. If the resemblance of both input and stored template of the user is identical then it produces the output as “Match” (606), which means the user is said to be recognized, and if the output of the matcher unit (605) produces the result as “Not Match” (607), then the user cannot access the device, and it automatically locks the device (202) for severe protection.