TV Control Research Articles

Comparison between three different delivery technologies of virtual nature on psychological state related to general stress recovery: An experimental study

Visiting nature has been shown to have several benefits for psychological state related to general stress recovery. However, for many people, access to nature is limited. Technological development has made it possible to deliver nature environments virtually. The present study examines the benefits of a same virtual nature (forest) environment delivered through different technologies on psychological state related to general stress recovery, more precisely, on restoration, current stress, subjective vitality, and affective response. The main focus is on comparing three different delivery technologies of virtual nature: TV (75″), VR headset (Meta Quest 2), and virtual nature room (30m2). The study applies a three-condition randomized trial with pre-post assessments and a crossover design, where 62 participants visited once in each condition for a 15-minute exposure of virtual nature (360-degree video with congruent soundscape). The participants responded to psychological measures before and after each condition. Overall, participants’ restoration increased, while current stress and negative affect decreased during the exposure. In comparison to the TV (control) condition, both the VR headset condition and the virtual nature room condition had a better impact on psychological state related to general stress recovery, as restoration and subjective vitality increased more. There were no statistically significant differences between the VR headset and virtual nature room conditions in any of the measures.

Distortion-tolerant on–off keying preemphasis signal transmission for a 10 Gbps indoor visible light communications

Abstract The design and simulation of indoor visible light communication (VLC) system with preemphasis is proposed for 5 m transmission of signal at the data rate of 10 Gbps for receiving only applications like smart TV, smart speaker, and smart home appliance control. The preemphasis driver circuit is designed to reduce the intersymbol interference by pulse shaping the signal and transimpedance amplifier is used to amplify the signal for longer distance transmission. Intensity modulation at the sender side and direct detection at the receiver-side are adopted in this work for the improvement of the system’s overall performance and to decrease its implementation cost. The system performance is analyzed in terms of BER, data-rate, Q-factor, and eye diagrams. The setup is developed, which includes a nonreturn-to-zero (NRZ) generator, preemphasis driver, light-emitting-diode, VLC channel, and receiver with an avalanche photodiode and Gaussian LPF. At 10 Gbps data rate, the maximum transmission distance that can be obtained is 5 m with a BER of less than 10−31.

The sequential and reflexive achievement of coach participation in the live TV broadcasting of football

ABSTRACT This article draws on ethnomethodology and conversation analysis to explore the accountability of coach participation in-game – i.e. its observability, tellability, reportability – by scrutinising the interactional practices by which the coach, on the sideline, is perceived, filmed, and described by TV technicians and commentators. The contribution offers an empirical investigation of the local procedures, sequentially ordered, by which coach participation in the game is reflexively achieved. It adopts the perspective of TV control room members while broadcasting football matches to show how they produce real-time audiovisual and verbal accounts tailored to the emergence of the coaches’ embodied and verbal actions.

Raspberry Pi-Based IP Public Address, CCTV, and Access Control System for Educational Purposes

This paper presents a cooperative project developed by two technical vocational schools. The project consists of the design and implementation of a prototype of an IP Public Address, closed circuit TV (CCTV) and access control system that uses the "Raspberry Pi" single-board computer as control system and non-electronic parts made with a 3D printer. The aim of the project is training students in maintenance of Voice over IP, audio and video. The project has been funded by the regional government <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Xunta de Galicia</i> .

Research on secure storage data access control of smart TV based on blockchain

Research on secure storage data access control of smart TV based on blockchain

Research on secure storage data access control of smart TV based on blockchain

Research on secure storage data access control of smart TV based on blockchain

Functionality of TV Control Applications

Functionality of TV Control Applications

Effect of Static Posture on Online Performance of P300-Based BCIs for TV Control.

To implement a practical brain–computer interface (BCI) for daily use, continuing changes in postures while performing daily tasks must be considered in the design of BCIs. To examine whether the performance of a BCI could depend on postures, we compared the online performance of P300-based BCIs built to select TV channels when subjects took sitting, recline, supine, and right lateral recumbent postures during BCI use. Subjects self-reported the degrees of interference, comfort, and familiarity after BCI control in each posture. We found no significant difference in the BCI performance as well as the amplitude and latency of P300 and N200 among the four postures. However, when we compared BCI accuracy outcomes normalized within individuals between two cases where subjects reported relatively more positively or more negatively about using the BCI in a particular posture, we found higher BCI accuracy in those postures for which individual subjects reported more positively. As a result, although the change of postures did not affect the overall performance of P300-based BCIs, the BCI performance varied depending on the degree of postural comfort felt by individual subjects. Our results suggest considering the postural comfort felt by individual BCI users when using a P300-based BCI at home.

Influence of Slow-Paced Breathing on Inhibition After Physical Exertion.

This research aims to investigate whether slow-paced breathing (SPB) improves adaptation to psychological stress, and specifically inhibition, when it is performed before or after physical exertion (PE). According to the resonance model, SPB is expected to increase cardiac vagal activity (CVA). Further, according to the neurovisceral integration model, CVA is positively linked to executive cognitive performance, and would thus play a role in the adaptation to psychological stress. We hypothesized that SPB, in comparison to a control condition, will induce a better adaptation to psychological stress, measured via better inhibitory performance. Two within-subject experiments were conducted with athletes: in the first experiment (N = 60) SPB (or control – neutral TV documentary) was realized before PE (“relax before PE”), and in the second experiment (N = 60) SPB (or the watching TV control) was realized after PE (“relax after PE”). PE consisted of 5 min Burpees, a physical exercise involving the whole body. In both experiments the adaptation to psychological stress was investigated with a Stroop task, a measure of inhibition, which followed PE. Perceived stress increased during PE (partial η2 = 0.63) and during the Stroop task (partial η2 = 0.08), and decreased during relaxation (partial η2 = 0.15), however, no effect of condition was found. At the physiological level PE significantly increased HR, RF, and decreased CVA [operationalized in this research via the root mean square of successive differences (RMSSD)] in both experiments. Further, the number of errors in the incongruent category (Stroop interference accuracy) was found to be lower in the SPB condition in comparison to the control condition, however, these results were not mediated by RMSSD. Additionally, the Stroop interference [reaction times (RTs)] was found to be lower overall in “relax before PE,” however, no effect was found regarding SPB and Stroop interference (RTs). Overall, our results suggest that SPB realized before or after PE has a positive effect regarding adaptation to psychological stress and specifically inhibition, however, the underlying mechanisms require further investigation.

Beyond remote control: Exploring natural gesture inputs for smart TV systems

This paper reports on work that explores natural gesture inputs from end-users for television use in a typical living room setting. First, we derive a set of 19 user-defined freehand gestures for regular TV control tasks. This study helps us to determine the gestures preferred by TV viewers and red uce the risk of developing an unusable, ineffective system. Then, based on this user-defined gesture set, we propose a unified framework to address specific problems in a complex real-world TV viewing environment, including 1) the automatic exclusion of many meaningless daily actions by TV viewers, 2) the capability to recognize both static and dynamic gestures simultaneously, as well as one- and two-handed gestures simultaneously, and 3) the continuous recognition of multiple dynamic gestures in the air (e.g., a channel switching gesture for channel 127). Experimental results show that our approach allows users to interact with TV-based applications more flexibly and effectively, with improved user experience and user satisfaction. Finally, we highlight the implications of our work for the design and development of related freehand gesture applications.

Dual Channel TV and Fans Controllers Based on Android Smartphones

Abstract - This research will focus on the design of dual channel television control systems and fan speed control. The design of a dual channel TV controller system and fan speed control uses wireless media as a link between an Android smart phone, Raspberry Pi B +, TV, and fan. To design a dual channel TV controller system and control wind kipsa, it includes an Android smartphone, wi-fi module type TL-WN832N TP-Link and Raspberry pi B +. Android smartphones function as TV controllers and fans with applications installed on Android smartphones. The TP-Link TL-WN832N wi-fi module functions as a wireless multimedia link between the Raspberry Pi B + and Android smartphones. Raspberry pi B + functions like processing data sent by an Android smartphone to control the TV or fan. Thus, the system design tool can replace 2 controllers and TV fans in one device that can control the TV and fan using an Android smartphone&#x0D; Keyword : Android smartphone, TP-Link TL-WN832N Wi-Fi module, Raspberry Pi B +

Hover: Exploring cognitive maps and mid-air pointing for television control

We introduce “Hover,” a new concept and interface for remote TV control based on air pointing in the users’ personal, peripersonal, and extrapersonal space and implemented with mid-air spatial shortcuts to viewers’ preferred TV channels distributed in the room with no representation other than that created in users’ own imagination. Hover exploits memory and spatial orientation skills to enable fast access to TV channels with a mere pointing of the hand in mid-air. A controlled experiment with 17 participants and 9 mid-air loci corresponding to shortcuts to television channels revealed an average user recall rate of 80% and individual rates up to 100% for mid-air loci, pointing accuracy offsets of 10 cm, and 99% recognition rate for air pointing actions. We hope that Hover will inspire researchers and practitioners of user interfaces for smart TVs to consider spatial locations and mid-air as active elements to design new interactive experiences for home entertainment environments centered on the smart TV.

Rancang Bangun Digital Home Assistant Dengan Perintah Suara Menggunakan Raspberry Pi Dan Smart Phone

Digital home assistant merupakan salah satu bagian dari teknologi smart home. Smart home merupakan salah satu riset teknologi yang berfokus untuk home automation, sehingga interaksi antara manusia dengan rumah menjadi lebih mudah dan peraktis. Salah satu interaksi yang dapat dilakukan yaitu menggunakan perintah suara. Saat ini teknologi digital home assistant dapat diimplementasikan dengan berbagai macam konsep dan berbagai macam alat. Salah satu alat yang dapat digunakan adalah smart phone. Smart phone merupakan alat komunikasi yang memiliki berbagai macam tools untuk memenuhi kebutuhan pengguna, salah satunya adalah tool yang ditawarkan oleh sistem operasi Android yaitu google speech API. Dengan google speech API kita dapat membuat aplikasi yang dapat memahami perkataan manusia. Agar peralatan elektronika di rumah dapat berkomunikasi dengan smart phone, digunakanlah micro controller yang dipasangkan pada elektronika di rumah. Beberapa micro controller yang dapat digunakan yaitu Raspberry Pi dan Arduino.&#x0D; Pada penelitian ini dibangun suatu digital home assistant dengan perintah suara menggunakan Raspberry Pi dan smart phone. Digital home assistant yang dibangun digunakan untuk pengendalian lampu, TV, dan AC. Google speech API digunakan pada smart phone untuk proses penerjemahan perintah suara yang diberikan oleh pengguna sistem.&#x0D; Hasil yang didapatkan untuk pengendalian lampu, TV dan AC dengan perintah suara menggunakan smart phone dan Raspberry Pi adalah sistem dapat berjalan dengan keberhasilan 90% dan waktu rata-rata eksekusi perintah mencapai 5.32 detik.

可視光および赤外線による連続ビデオ観察による「発火」と「物体移動」の研究－モスクワおよびその周辺地域におけるポルターガイスト救急サービスー(海外研究紹介)

可視光および赤外線による連続ビデオ観察による「発火」と「物体移動」の研究－モスクワおよびその周辺地域におけるポルターガイスト救急サービスー(海外研究紹介)

Design of Real-Time Hardware-in-the-Loop TV Guidance System Simulation Platform

This paper presents a novel design of a real-time hardware-in-the-loop (HIL) missile TV guidance system simulation platform, which consists of a development computer, a target computer, a turntable, a control cabin, and a joystick. The guidance system simulation model is created on the development computer by Simulink® and then downloaded to the target computer. Afterwards, Simulink Real-Time™ runs the model in real-time. Meanwhile, the target computer uploads the real-time simulation data back to the development computer. The hardware in the simulation loop is TV camera, encoders, control cabin, servomotors, and target simulator. In terms of hardware and software, the system has been simplified compared with the existing works. The volume of the turntable integrating the target simulator and the seeker simulator is about 0.036 cubic meters compared to the original 8 cubic meters, so it has a compact structure. The platform can perform the closed-loop control, so the simulation has high precision. Taking the TV guidance simulation as an example, in the case of target maneuvering, the final miss distance of the TV guidance missile is 0.11812 m, while the miss distance of the original system is 13 m. The trajectories obtained from the HIL and mathematical simulations substantially coincide. So the simulation results show that the proposed HIL simulation platform is effective.

Parental Expectations and Sedentary Behaviors among Chinese Children: A National Study of 15,736 students from 112 Middle Schools

AimsTo examine the dual impacts of parental achievement expectation on nonacademic and academic‐related sedentary behavior among junior high students in China.MethodsBased on the first nationally representative sample of 7th and 9th graders in China (N=15,736), we fitted multilevel structural equation models linking multiple indicators of parental expectation, parental control practices regarding recreational screen use and homework, and child academic/nonacademic‐related sedentary behaviors.Results76% of all students were expected by parents to achieve upper middle to top levels in academic performance. 85% were expected to obtain a college degree or above. 48% were expected to live in big cities or overseas. 82% were expected to be professionals or artists. Parental expected academic performance (ranging from “no expectation”, “medium in the class”, “upper middle in the class”, “top 5 in the class”) was significantly positively associated with strictness of parental control over student TV watching (b= 0.040, p&lt;.01), internet use (b= 0.053, p&lt;.01), and parental monitor over student homework (b= 0.072, p&lt;.01). Parental expected terminal degree (ranging from “middle school”, “high school”, “college”, and “graduate”) was significantly positively associated with strictness of parental control over student TV watching (b= 0.040, p&lt;.000), internet use (b= 0.045, p&lt;.000), and homework (b=0.046, p&lt;.000). Compared to students whose parents do not place specific expectations on their future occupations, students who are expected to be administrative/business professional, performing artist, or others reported stricter parental control over TV watching (for professionals, b=0.145, p&lt;.000; for artists, b=0.126, p&lt;.001; for other occupations, b=0.116, p&lt;.000), internet use (for professionals, b=0.189, p&lt;.000; for artists, b=0.164, p&lt;.000; for other occupations, b=0.173, p&lt;.000), and student homework (for professionals, b=0.138, p&lt;.000; for artists, b=0.159, p&lt;.000; for other occupations, b=0.089, p&lt;.000). Compared to students whose parents do not place specific expectations on their future place of living, students who are expected to live in big cities and overseas reported stricter parental control over student homework (for big cities, b=0.090, p&lt;.000; for overseas, b=0.083, p&lt;.000). Parental TV control and internet control were negatively associated with TV (b= −0.126, p&lt;.000) and internet use (b= −0.357, p&lt;.000), respectively. Stricter parental monitor over homework is associated with more time spent on homework (b= 0.069, p&lt;.000).ConclusionsChinese students are carrying high parental expectations. Parental expectation may simultaneously increase and decrease different types of student sedentary behaviors. Future sedentary behavioral interventions in China requires addressing the competitive academic culture and heavy burden of parental expectations, as well as offering parents trainings/education on how to practice health‐promoting controlling/monitoring.Support or Funding InformationFunding: NIH U54 center grant, HD070725.

Corona discharge initiation for TV control of defects in crystalline silicon

The article presents the results of experimental studies to control of defects of monocrystalline silicon wafers. Monocrystalline silicon is one of the major solar energy materials. Therefore, control of its defects is an important task that leads to saving of production resources and reduce the cost of photovoltaic solar cells put into operation. Defects in the wafer of monocrystalline silicon are observed under the excitation of negative pulsed corona discharge in the air gap over them. This method of corona discharge excitation in the planar electrode system with a dielectric insulating wafer allows adjusting the voltage and current of the discharge. A feature of the proposed method is to produce a corona discharge at a relatively low voltage of 1-1,5 kV. Using a transparent electrode makes it possible to observe defects and measure their brightness and geometrical parameters of the corona via TV information and measuring system. In particular, the authors have observed the luminescence of the defects in the crystalline silicon wafer under the excitation of negative pulsed corona discharge in the air. The results can be used to control the silicon wafers in the manufacture of photovoltaic solar cells.

On free-hand TV control: experimental results on user-elicited gestures with Leap Motion

We present insights from a gesture elicitation study conducted for TV control, during which 18 participants contributed gesture commands and rated the execution difficulty and recall likeliness of free-hand gestures for 21 television control tasks. Our study complements previous work on gesture interaction design for the TV set with the first exploration of fine-grained resolution 3-D finger movements and hand gestures. We report lower agreement rates than previous gesture studies ( $${\mathcal {AR}}=.158$$ ) with 72.8 % recall rate and 15.8 % false positives, results that are explained by the complexity and variability of unconstrained finger and hand gestures. However, our observations also confirm previous findings, such as people preferring related gestures for dichotomous tasks and more disagreement occurring for abstract tasks, such as “open browser” or “show the list of channels” for our specific TV scenario. To reach a better understanding of our participants’ preferences for articulating finger and hand gestures, we defined five measures for Leap Motion gestures, such as gesture volume and finger-to-palm distance, which we employed to evaluate gestures performed by our participants. We also contribute a set of guidelines for practitioners interested in designing free-hand gestures for interactive TV scenarios involving similar gesture acquisition technology. We release our dataset consisting in 378 Leap Motion gestures described by fingertips position, direction, and velocity coordinates to foster further studies in the community. This first exploration of viewers’ preferences for fine-grained resolution free-hand gestures for TV control represents one more step toward designing low-effort gesture interfaces for lean-back interaction with the TV set.

On robustness in the gap metric and coprime factor uncertainty for LTV systems

In this paper, we study the problem of robust stabilization for discrete linear time-varying (LTV) systems subject to time-varying normalized coprime factor uncertainty. Operator theoretic results which generalize similar results known to hold for linear time-invariant (infinite-dimensional) systems are developed. In particular, we compute an upper bound for the maximal achievable stability margin under TV normalized coprime factor uncertainty in terms of the norm of an operator with a time-varying Hankel structure. We point to a necessary and sufficient condition which guarantees compactness of the TV Hankel operator, and in which case singular values and vectors can be used to compute the time-varying stability margin and TV controller.

The Software Design and Development of Wireless Terminal for Intelligent Home Control System Based on Android4.0

This paper takes the enterprise actual demands as the starting point, designing a intelligent home control system which is based on Android4.0 and Wi-Fi home server. For the wireless terminal software design framework of home control system of the client, combining some examples to achieve an organic unity of four home wireless control modules which are lighting control modules, air-conditioning control modules, appliance control modules and curtain control modules. The Android application programming, graphical interface designing, the background data processing and database designing are discussed in detail, as well as the development process of UDP communication between intelligent terminal and the home gateway, which is tested effectively on the TV, DVD, lighting, air conditioning, acoustics, curtains and other wireless control equipment based on Android4.0 intelligent terminal, the results of tests show that it gets some good effects on the practical applications of enterprises.